mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2024-12-29 17:23:36 +00:00
c0b82ab95b
79044 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
e864effa1f |
9p update for 6.13-rc1
- usbg: fix alloc failure handling & build-as-module - xen: couple of fixes - v9fs_cache_register/unregister code cleanup -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE/IPbcYBuWt0zoYhOq06b7GqY5nAFAmdJ8H4ACgkQq06b7GqY 5nCI2Q//YE1WEFLXIx8AGCZO8zspAErByLuEhsXGwc7P+O4JN3gAOBnLNqmZICpP T/GQE/diK64iDv+Q8JCSiSN/IfTigywQ3OpqPvUMK9S5uLtgs6D0bNB4jU4RuBrP 2qO4tqJQrKSUEUeJl+IefsIJjaSEv4m7pfZ9sGZPNHaoubPyNWF+Wm5cF0opFif8 ghLh5bz5I7X2E8yL6DNmjKG4fna7pIWGPUhlwE9yPMBipzeYsVzPEfeZL4NgmCcX QA6ICpgHiCmTdBXJAv0MTwaCw/oMwxIYkN85o+iQv9OKVdGltFrUdZkgmrYGoJyi eMofYBDX+kawwnuZVmzcSK+SrkzNPAWPXTPJjNdxa4uM4IK0zQyBBXasS5ogFlX+ urjMIzOyJ5CfoXiHhdJdYiBlHiYahYGBGuuqFSbrnC4JIwilNKNv607lgoF/deXh 5MNCF9PFP9xZPfr6sRVkSe5f9k9J93Z0YofQWtwOGQQphSa0jSduJbBIvF8YAVwQ QSlqm4oXmX9lAz/tKRFb9koYOfDtSnZ6MKK6GruYuNKZy9oN2av1zTzs53HUQvV0 kYNA00MC5eK3R4AYtJtWWy6GhsFsvRtDDrDpyQXI90ZA0FlFye70yCg6BWnlkzSU RyAbrOJ9fJniAlBhT2uBtTwjhoosJyTLj+eXdIvsaloIcHvpPac= =Ekpl -----END PGP SIGNATURE----- Merge tag '9p-for-6.13-rc1' of https://github.com/martinetd/linux Pull 9p updates from Dominique Martinet: - usbg: fix alloc failure handling & build-as-module - xen: couple of fixes - v9fs_cache_register/unregister code cleanup * tag '9p-for-6.13-rc1' of https://github.com/martinetd/linux: net/9p/usbg: allow building as standalone module 9p/xen: fix release of IRQ 9p/xen: fix init sequence net/9p/usbg: fix handling of the failed kzalloc() memory allocation fs/9p: replace functions v9fs_cache_{register|unregister} with direct calls |
||
|
Linus Torvalds
|
9d0ad04553 |
A fix for the mount "device" string parser from Patrick and two cred
reference counting fixups from Max, marked for stable. Also included a number of cleanups and a tweak to MAINTAINERS to avoid unnecessarily CCing netdev list. -----BEGIN PGP SIGNATURE----- iQFHBAABCAAxFiEEydHwtzie9C7TfviiSn/eOAIR84sFAmdJ/sMTHGlkcnlvbW92 QGdtYWlsLmNvbQAKCRBKf944AhHzi8EOB/9Jhq1nOe0dN7aAWN1owZH85TXmOLuX eSS79AJp63lmJgx+mF0CbLLN6Vwjvm1vqz10Uhe5VCmqtxKy1/F4QxEOwk+zEMwT iGkM+6nUtMMqnxqItJpFC19YQONwgidsNcbi7v8nDEHqH8FXEC4R0pi0990bUQSj E8zVzq44TNFQrhWjDJHPnXsxbH9SijRuwu1O4KEZ2HK0QQ8LfpPptozJawH0p2Hs Wc6V6ppt7o9F9MHW137I4BOG9xm18aAQa9Ztd5GHhip63SuLpdQNwoM9JhC8J/bt bcci5CoCa34P57g9/1kh9ov/NXf9XgjSCFlDzk9zZH0IxaX5CYgTqYL5 =xf5D -----END PGP SIGNATURE----- Merge tag 'ceph-for-6.13-rc1' of https://github.com/ceph/ceph-client Pull ceph updates from Ilya Dryomov: "A fix for the mount "device" string parser from Patrick and two cred reference counting fixups from Max, marked for stable. Also included a number of cleanups and a tweak to MAINTAINERS to avoid unnecessarily CCing netdev list" * tag 'ceph-for-6.13-rc1' of https://github.com/ceph/ceph-client: ceph: fix cred leak in ceph_mds_check_access() ceph: pass cred pointer to ceph_mds_auth_match() ceph: improve caps debugging output ceph: correct ceph_mds_cap_peer field name ceph: correct ceph_mds_cap_item field name ceph: miscellaneous spelling fixes ceph: Use strscpy() instead of strcpy() in __get_snap_name() ceph: Use str_true_false() helper in status_show() ceph: requalify some char pointers as const ceph: extract entity name from device id MAINTAINERS: exclude net/ceph from networking ceph: Remove fs/ceph deadcode libceph: Remove unused ceph_crypto_key_encode libceph: Remove unused ceph_osdc_watch_check libceph: Remove unused pagevec functions libceph: Remove unused ceph_pagelist functions |
||
|
Linus Torvalds
|
baf67f6aa9 |
NFS client updates for Linux 6.13
Highlights include:
Bugfixes:
- NFSv4.0: Fix a use-after-free problem in open()
- nfs/localio: fix for a memory corruption in nfs_local_read_done
- Revert "nfs: don't reuse partially completed requests in nfs_lock_and_join_requests"
- nfsv4: ignore SB_RDONLY when mounting nfs
- sunrpc: clear XPRT_SOCK_UPD_TIMEOUT when reseting the transport
- SUNRPC: timeout and cancel TLS handshake with -ETIMEDOUT
- sunrpc: fix one UAF issue caused by sunrpc kernel tcp socket
- pNFS/blocklayout: Fix device registration issues
- SUNRPC: Fix a hang in TLS sock_close if sk_write_pending
Features and cleanups:
- localio cleanups from Mike Snitzer
- Clean up refcounting on the nfs version modules
- __counted_by() annotations
- nfs: make processes that are waiting for an I/O lock killable
-----BEGIN PGP SIGNATURE-----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=Ih5w
-----END PGP SIGNATURE-----
Merge tag 'nfs-for-6.13-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust:
"Bugfixes:
- nfs/localio: fix for a memory corruption in nfs_local_read_done
- Revert "nfs: don't reuse partially completed requests in
nfs_lock_and_join_requests"
- nfsv4:
- ignore SB_RDONLY when mounting nfs
- Fix a use-after-free problem in open()
- sunrpc:
- clear XPRT_SOCK_UPD_TIMEOUT when reseting the transport
- timeout and cancel TLS handshake with -ETIMEDOUT
- fix one UAF issue caused by sunrpc kernel tcp socket
- Fix a hang in TLS sock_close if sk_write_pending
- pNFS/blocklayout: Fix device registration issues
Features and cleanups:
- localio cleanups from Mike Snitzer
- Clean up refcounting on the nfs version modules
- __counted_by() annotations
- nfs: make processes that are waiting for an I/O lock killable"
* tag 'nfs-for-6.13-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (24 commits)
fs/nfs/io: make nfs_start_io_*() killable
nfs/blocklayout: Limit repeat device registration on failure
nfs/blocklayout: Don't attempt unregister for invalid block device
sunrpc: fix one UAF issue caused by sunrpc kernel tcp socket
SUNRPC: timeout and cancel TLS handshake with -ETIMEDOUT
sunrpc: clear XPRT_SOCK_UPD_TIMEOUT when reset transport
nfs: ignore SB_RDONLY when mounting nfs
Revert "nfs: don't reuse partially completed requests in nfs_lock_and_join_requests"
Revert "fs: nfs: fix missing refcnt by replacing folio_set_private by folio_attach_private"
nfs/localio: must clear res.replen in nfs_local_read_done
NFSv4.0: Fix a use-after-free problem in the asynchronous open()
NFSv4.0: Fix the wake up of the next waiter in nfs_release_seqid()
SUNRPC: Fix a hang in TLS sock_close if sk_write_pending
sunrpc: remove newlines from tracepoints
nfs: Annotate struct pnfs_commit_array with __counted_by()
nfs/localio: eliminate need for nfs_local_fsync_work forward declaration
nfs/localio: remove extra indirect nfs_to call to check {read,write}_iter
nfs/localio: eliminate unnecessary kref in nfs_local_fsync_ctx
nfs/localio: remove redundant suid/sgid handling
NFS: Implement get_nfs_version()
...
|
||
|
Linus Torvalds
|
65ae975e97 |
Including fixes from bluetooth.
Current release - regressions:
- rtnetlink: fix rtnl_dump_ifinfo() error path
- bluetooth: remove the redundant sco_conn_put
Previous releases - regressions:
- netlink: fix false positive warning in extack during dumps
- sched: sch_fq: don't follow the fast path if Tx is behind now
- ipv6: delete temporary address if mngtmpaddr is removed or unmanaged
- tcp: fix use-after-free of nreq in reqsk_timer_handler().
- bluetooth: fix slab-use-after-free Read in set_powered_sync
- l2tp: fix warning in l2tp_exit_net found
- eth: bnxt_en: fix receive ring space parameters when XDP is active
- eth: lan78xx: fix double free issue with interrupt buffer allocation
- eth: tg3: set coherent DMA mask bits to 31 for BCM57766 chipsets
Previous releases - always broken:
- ipmr: fix tables suspicious RCU usage
- iucv: MSG_PEEK causes memory leak in iucv_sock_destruct()
- eth: octeontx2-af: fix low network performance
- eth: stmmac: dwmac-socfpga: set RX watchdog interrupt as broken
- eth: rtase: correct the speed for RTL907XD-V1
Misc:
- some documentation fixup
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
-----BEGIN PGP SIGNATURE-----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=7dW1
-----END PGP SIGNATURE-----
Merge tag 'net-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from bluetooth.
Current release - regressions:
- rtnetlink: fix rtnl_dump_ifinfo() error path
- bluetooth: remove the redundant sco_conn_put
Previous releases - regressions:
- netlink: fix false positive warning in extack during dumps
- sched: sch_fq: don't follow the fast path if Tx is behind now
- ipv6: delete temporary address if mngtmpaddr is removed or
unmanaged
- tcp: fix use-after-free of nreq in reqsk_timer_handler().
- bluetooth: fix slab-use-after-free Read in set_powered_sync
- l2tp: fix warning in l2tp_exit_net found
- eth:
- bnxt_en: fix receive ring space parameters when XDP is active
- lan78xx: fix double free issue with interrupt buffer allocation
- tg3: set coherent DMA mask bits to 31 for BCM57766 chipsets
Previous releases - always broken:
- ipmr: fix tables suspicious RCU usage
- iucv: MSG_PEEK causes memory leak in iucv_sock_destruct()
- eth:
- octeontx2-af: fix low network performance
- stmmac: dwmac-socfpga: set RX watchdog interrupt as broken
- rtase: correct the speed for RTL907XD-V1
Misc:
- some documentation fixup"
* tag 'net-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (49 commits)
ipmr: fix build with clang and DEBUG_NET disabled.
Documentation: tls_offload: fix typos and grammar
Fix spelling mistake
ipmr: fix tables suspicious RCU usage
ip6mr: fix tables suspicious RCU usage
ipmr: add debug check for mr table cleanup
selftests: rds: move test.py to TEST_FILES
net_sched: sch_fq: don't follow the fast path if Tx is behind now
tcp: Fix use-after-free of nreq in reqsk_timer_handler().
net: phy: fix phy_ethtool_set_eee() incorrectly enabling LPI
net: Comment copy_from_sockptr() explaining its behaviour
rxrpc: Improve setsockopt() handling of malformed user input
llc: Improve setsockopt() handling of malformed user input
Bluetooth: SCO: remove the redundant sco_conn_put
Bluetooth: MGMT: Fix possible deadlocks
Bluetooth: MGMT: Fix slab-use-after-free Read in set_powered_sync
bnxt_en: Unregister PTP during PCI shutdown and suspend
bnxt_en: Refactor bnxt_ptp_init()
bnxt_en: Fix receive ring space parameters when XDP is active
bnxt_en: Fix queue start to update vnic RSS table
...
|
||
|
Liu Jian
|
3f23f96528 |
sunrpc: fix one UAF issue caused by sunrpc kernel tcp socket
BUG: KASAN: slab-use-after-free in tcp_write_timer_handler+0x156/0x3e0
Read of size 1 at addr ffff888111f322cd by task swapper/0/0
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.12.0-rc4-dirty #7
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1
Call Trace:
<IRQ>
dump_stack_lvl+0x68/0xa0
print_address_description.constprop.0+0x2c/0x3d0
print_report+0xb4/0x270
kasan_report+0xbd/0xf0
tcp_write_timer_handler+0x156/0x3e0
tcp_write_timer+0x66/0x170
call_timer_fn+0xfb/0x1d0
__run_timers+0x3f8/0x480
run_timer_softirq+0x9b/0x100
handle_softirqs+0x153/0x390
__irq_exit_rcu+0x103/0x120
irq_exit_rcu+0xe/0x20
sysvec_apic_timer_interrupt+0x76/0x90
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:default_idle+0xf/0x20
Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90
90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 33 f8 25 00 fb f4 <fa> c3 cc cc cc
cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90
RSP: 0018:ffffffffa2007e28 EFLAGS: 00000242
RAX: 00000000000f3b31 RBX: 1ffffffff4400fc7 RCX: ffffffffa09c3196
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9f00590f
RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed102360835d
R10: ffff88811b041aeb R11: 0000000000000001 R12: 0000000000000000
R13: ffffffffa202d7c0 R14: 0000000000000000 R15: 00000000000147d0
default_idle_call+0x6b/0xa0
cpuidle_idle_call+0x1af/0x1f0
do_idle+0xbc/0x130
cpu_startup_entry+0x33/0x40
rest_init+0x11f/0x210
start_kernel+0x39a/0x420
x86_64_start_reservations+0x18/0x30
x86_64_start_kernel+0x97/0xa0
common_startup_64+0x13e/0x141
</TASK>
Allocated by task 595:
kasan_save_stack+0x24/0x50
kasan_save_track+0x14/0x30
__kasan_slab_alloc+0x87/0x90
kmem_cache_alloc_noprof+0x12b/0x3f0
copy_net_ns+0x94/0x380
create_new_namespaces+0x24c/0x500
unshare_nsproxy_namespaces+0x75/0xf0
ksys_unshare+0x24e/0x4f0
__x64_sys_unshare+0x1f/0x30
do_syscall_64+0x70/0x180
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Freed by task 100:
kasan_save_stack+0x24/0x50
kasan_save_track+0x14/0x30
kasan_save_free_info+0x3b/0x60
__kasan_slab_free+0x54/0x70
kmem_cache_free+0x156/0x5d0
cleanup_net+0x5d3/0x670
process_one_work+0x776/0xa90
worker_thread+0x2e2/0x560
kthread+0x1a8/0x1f0
ret_from_fork+0x34/0x60
ret_from_fork_asm+0x1a/0x30
Reproduction script:
mkdir -p /mnt/nfsshare
mkdir -p /mnt/nfs/netns_1
mkfs.ext4 /dev/sdb
mount /dev/sdb /mnt/nfsshare
systemctl restart nfs-server
chmod 777 /mnt/nfsshare
exportfs -i -o rw,no_root_squash *:/mnt/nfsshare
ip netns add netns_1
ip link add name veth_1_peer type veth peer veth_1
ifconfig veth_1_peer 11.11.0.254 up
ip link set veth_1 netns netns_1
ip netns exec netns_1 ifconfig veth_1 11.11.0.1
ip netns exec netns_1 /root/iptables -A OUTPUT -d 11.11.0.254 -p tcp \
--tcp-flags FIN FIN -j DROP
(note: In my environment, a DESTROY_CLIENTID operation is always sent
immediately, breaking the nfs tcp connection.)
ip netns exec netns_1 timeout -s 9 300 mount -t nfs -o proto=tcp,vers=4.1 \
11.11.0.254:/mnt/nfsshare /mnt/nfs/netns_1
ip netns del netns_1
The reason here is that the tcp socket in netns_1 (nfs side) has been
shutdown and closed (done in xs_destroy), but the FIN message (with ack)
is discarded, and the nfsd side keeps sending retransmission messages.
As a result, when the tcp sock in netns_1 processes the received message,
it sends the message (FIN message) in the sending queue, and the tcp timer
is re-established. When the network namespace is deleted, the net structure
accessed by tcp's timer handler function causes problems.
To fix this problem, let's hold netns refcnt for the tcp kernel socket as
done in other modules. This is an ugly hack which can easily be backported
to earlier kernels. A proper fix which cleans up the interfaces will
follow, but may not be so easy to backport.
Fixes:
|
||
|
Benjamin Coddington
|
d7bdd849ef |
SUNRPC: timeout and cancel TLS handshake with -ETIMEDOUT
We've noticed a situation where an unstable TCP connection can cause the
TLS handshake to timeout waiting for userspace to complete it. When this
happens, we don't want to return from xs_tls_handshake_sync() with zero, as
this will cause the upper xprt to be set CONNECTED, and subsequent attempts
to transmit will be returned with -EPIPE. The sunrpc machine does not
recover from this situation and will spin attempting to transmit.
The return value of tls_handshake_cancel() can be used to detect a race
with completion:
* tls_handshake_cancel - cancel a pending handshake
* Return values:
* %true - Uncompleted handshake request was canceled
* %false - Handshake request already completed or not found
If true, we do not want the upper xprt to be connected, so return
-ETIMEDOUT. If false, its possible the handshake request was lost and
that may be the reason for our timeout. Again we do not want the upper
xprt to be connected, so return -ETIMEDOUT.
Ensure that we alway return an error from xs_tls_handshake_sync() if we
call tls_handshake_cancel().
Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Fixes:
|
||
|
Liu Jian
|
4db9ad82a6 |
sunrpc: clear XPRT_SOCK_UPD_TIMEOUT when reset transport
Since transport->sock has been set to NULL during reset transport,
XPRT_SOCK_UPD_TIMEOUT also needs to be cleared. Otherwise, the
xs_tcp_set_socket_timeouts() may be triggered in xs_tcp_send_request()
to dereference the transport->sock that has been set to NULL.
Fixes:
|
||
|
Paolo Abeni
|
f6d7695b5a |
ipmr: fix build with clang and DEBUG_NET disabled.
Sasha reported a build issue in ipmr::
net/ipv4/ipmr.c:320:13: error: function 'ipmr_can_free_table' is not \
needed and will not be emitted \
[-Werror,-Wunneeded-internal-declaration]
320 | static bool ipmr_can_free_table(struct net *net)
Apparently clang is too smart with BUILD_BUG_ON_INVALID(), let's
fallback to a plain WARN_ON_ONCE().
Reported-by: Sasha Levin <sashal@kernel.org>
Closes: https://qa-reports.linaro.org/lkft/sashal-linus-next/build/v6.11-25635-g6813e2326f1e/testrun/26111580/suite/build/test/clang-nightly-lkftconfig/details/
Fixes:
|
||
|
Paolo Abeni
|
fc9c273d6d |
ipmr: fix tables suspicious RCU usage
Similar to the previous patch, plumb the RCU lock inside the ipmr_get_table(), provided a lockless variant and apply the latter in the few spots were the lock is already held. Fixes: |
||
|
Paolo Abeni
|
f1553c9894 |
ip6mr: fix tables suspicious RCU usage
Several places call ip6mr_get_table() with no RCU nor RTNL lock. Add RCU protection inside such helper and provide a lockless variant for the few callers that already acquired the relevant lock. Note that some users additionally reference the table outside the RCU lock. That is actually safe as the table deletion can happen only after all table accesses are completed. Fixes: |
||
|
Paolo Abeni
|
11b6e701bc |
ipmr: add debug check for mr table cleanup
The multicast route tables lifecycle, for both ipv4 and ipv6, is
protected by RCU using the RTNL lock for write access. In many
places a table pointer escapes the RCU (or RTNL) protected critical
section, but such scenarios are actually safe because tables are
deleted only at namespace cleanup time or just after allocation, in
case of default rule creation failure.
Tables freed at namespace cleanup time are assured to be alive for the
whole netns lifetime; tables freed just after creation time are never
exposed to other possible users.
Ensure that the free conditions are respected in ip{,6}mr_free_table, to
document the locking schema and to prevent future possible introduction
of 'table del' operation from breaking it.
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
|
||
|
Jakub Kicinski
|
122aba8c80 |
net_sched: sch_fq: don't follow the fast path if Tx is behind now
Recent kernels cause a lot of TCP retransmissions
[ ID] Interval Transfer Bitrate Retr Cwnd
[ 5] 0.00-1.00 sec 2.24 GBytes 19.2 Gbits/sec 2767 442 KBytes
[ 5] 1.00-2.00 sec 2.23 GBytes 19.1 Gbits/sec 2312 350 KBytes
^^^^
Replacing the qdisc with pfifo makes retransmissions go away.
It appears that a flow may have a delayed packet with a very near
Tx time. Later, we may get busy processing Rx and the target Tx time
will pass, but we won't service Tx since the CPU is busy with Rx.
If Rx sees an ACK and we try to push more data for the delayed flow
we may fastpath the skb, not realizing that there are already "ready
to send" packets for this flow sitting in the qdisc.
Don't trust the fastpath if we are "behind" according to the projected
Tx time for next flow waiting in the Qdisc. Because we consider anything
within the offload window to be okay for fastpath we must consider
the entire offload window as "now".
Qdisc config:
qdisc fq 8001: dev eth0 parent 1234:1 limit 10000p flow_limit 100p \
buckets 32768 orphan_mask 1023 bands 3 \
priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1 \
weights 589824 196608 65536 quantum 3028b initial_quantum 15140b \
low_rate_threshold 550Kbit \
refill_delay 40ms timer_slack 10us horizon 10s horizon_drop
For iperf this change seems to do fine, the reordering is gone.
The fastpath still gets used most of the time:
gc 0 highprio 0 fastpath 142614 throttled 418309 latency 19.1us
xx_behind 2731
where "xx_behind" counts how many times we hit the new "return false".
CC: stable@vger.kernel.org
Fixes:
|
||
|
Kuniyuki Iwashima
|
c31e72d021 |
tcp: Fix use-after-free of nreq in reqsk_timer_handler().
The cited commit replaced inet_csk_reqsk_queue_drop_and_put() with
__inet_csk_reqsk_queue_drop() and reqsk_put() in reqsk_timer_handler().
Then, oreq should be passed to reqsk_put() instead of req; otherwise
use-after-free of nreq could happen when reqsk is migrated but the
retry attempt failed (e.g. due to timeout).
Let's pass oreq to reqsk_put().
Fixes:
|
||
|
Paolo Abeni
|
8d5c1b8c3e |
bluetooth pull request for net:
- SCO: remove the redundant sco_conn_put - MGMT: Fix slab-use-after-free Read in set_powered_sync - MGMT: Fix possible deadlocks -----BEGIN PGP SIGNATURE----- iQJNBAABCAA3FiEE7E6oRXp8w05ovYr/9JCA4xAyCykFAmdF/DsZHGx1aXoudm9u LmRlbnR6QGludGVsLmNvbQAKCRD0kIDjEDILKV7+D/9sNNnl5y8ZFh/QCbH5pFBb PZfCJlawOaRnJn8PgmQd8UJW/QexJ2J6YrmdXo3Hf4+kDFp7eS2zr2szlWtzv7HD JJ1ApQVu5XwJt2I5GHvayj7HusFNcQ/Ub5Px3F8gW0vjNhqgj7Nq8D7XQjr4D9O6 9SOlidpdda4ZU+dm8BZhA0WWT+169wlTXplJ82W8OPPYITw+jdLuZxH4+m/Klc3F d+lqVbfn5oqvWj4mjszFz6ngyHi3iysOOqQEHnSTaEx33C1kxbuz8eTJxk6LXASq lIUesg2h8CP3gaYmn5qATaZRCAW59nMG/1HEAH4fDjrrhQotN9XHBSrZqpsAZEwl 16u2b6iODoEqAwCL82HJl9jA4nVCwRGxYBP0zvd0Fag19l0JdRBIyl5Jm9m2XzUP o50eYx7AnpJgEpIYB+g0Jdvj0ourWbtAU5aENcjnMXSH4XnO+o93dpFKdgC8EOgn vWkOhsCy0H3/OY4ANDq4rslbxQXJvP8G0h98265Jof8qaUrHqcAwO1NXx1yqqwwk xbKd0cO1UUQb0A8n14sbwysvKH/KzZ7n0qJjPIkGaUQWD1t8DGI1jAH2cA4zH7JJ PvJyZsbHGU5vvv7W3ntCMQPNUglFGdWhcqCjiSNUOquojWCzHBG6CfIO8B5aDUiI fsfSjFnAcIPZXuxjuyRc2A== =m8Sx -----END PGP SIGNATURE----- Merge tag 'for-net-2024-11-26' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth Luiz Augusto von Dentz says: ==================== bluetooth pull request for net: - SCO: remove the redundant sco_conn_put - MGMT: Fix slab-use-after-free Read in set_powered_sync - MGMT: Fix possible deadlocks * tag 'for-net-2024-11-26' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth: Bluetooth: SCO: remove the redundant sco_conn_put Bluetooth: MGMT: Fix possible deadlocks Bluetooth: MGMT: Fix slab-use-after-free Read in set_powered_sync ==================== Link: https://patch.msgid.link/20241126165149.899213-1-luiz.dentz@gmail.com Signed-off-by: Paolo Abeni <pabeni@redhat.com> |
||
|
Michal Luczaj
|
0202005664 |
rxrpc: Improve setsockopt() handling of malformed user input
copy_from_sockptr() does not return negative value on error; instead, it
reports the number of bytes that failed to copy. Since it's deprecated,
switch to copy_safe_from_sockptr().
Note: Keeping the `optlen != sizeof(unsigned int)` check as
copy_safe_from_sockptr() by itself would also accept
optlen > sizeof(unsigned int). Which would allow a more lenient handling
of inputs.
Fixes:
|
||
|
Michal Luczaj
|
1465036b10 |
llc: Improve setsockopt() handling of malformed user input
copy_from_sockptr() is used incorrectly: return value is the number of
bytes that could not be copied. Since it's deprecated, switch to
copy_safe_from_sockptr().
Note: Keeping the `optlen != sizeof(int)` check as copy_safe_from_sockptr()
by itself would also accept optlen > sizeof(int). Which would allow a more
lenient handling of inputs.
Fixes:
|
||
|
Linus Torvalds
|
445d9f05fa |
NFSD 6.13 Release Notes
Jeff Layton contributed a scalability improvement to NFSD's NFSv4 backchannel session implementation. This improvement is intended to increase the rate at which NFSD can safely recall NFSv4 delegations from clients, to avoid the need to revoke them. Revoking requires a slow state recovery process. A wide variety of bug fixes and other incremental improvements make up the bulk of commits in this series. As always I am grateful to the NFSD contributors, reviewers, testers, and bug reporters who participated during this cycle. -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEKLLlsBKG3yQ88j7+M2qzM29mf5cFAmdEgLQACgkQM2qzM29m f5cwmg/9HcfG7blepU/2qNHopzSYRO5vZw1YNJQ5/Wi3bmqIea83lf8OcCY1G/aj 6K+jnenzHrwfhaA4u7N2FPXPVl8sPSMuOrJXY5zC4yE5QnIbranjcyEW5l5zlj3n ukkTYQgjUsKre3pHlvn3JmDHfUhNPEfzirsJeorP7DS3omne+OFA1LNncNP6emRu h0aEC6EJ43zUkYiz9nZYqPwIAwrUIA0WOrvVnq7vsi6gR4/Muk7nS+X/y4qFjli3 9enVskEv8sFmmOAIMK3CHJq+exEeKtKEKUuYkD23QgPt2R4+IwqS70o9IM/S1ypf APiv958BIhxm/SwUn1IjoxIckTB5EdksMxU5/4qGr1ZxprPG4/ruKO80BkrxLzW2 n1HmJ4ZNnpWPQvHN7RQ0WOsPNzL8byxJbGr1bpNgU4AGXnTFWPrAnB6juiyX4xb+ YNfgkQGDY79o7r1OJ5UUdCyx0QBSnaLNACTGm2u2FpI/ukMFPdrWIE99QbBgSe1p MgWaiPwSY+9crFfGPJeQ4t6/siRAec6L3RO9KT9Epcd2S7/Uts3NXYRdJfwZ+Qza TkPY2bm7T/WCcMhW7DN372hqgfRHPWOf4tacJ1Tob+As1d6p6qXEX2zi6piCCOLj dmTVDSVPClRXt8YigF9WqosyWv1jUzSnh9ne+eYPBpj93Ag2YBY= =wBvS -----END PGP SIGNATURE----- Merge tag 'nfsd-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux Pull nfsd updates from Chuck Lever: "Jeff Layton contributed a scalability improvement to NFSD's NFSv4 backchannel session implementation. This improvement is intended to increase the rate at which NFSD can safely recall NFSv4 delegations from clients, to avoid the need to revoke them. Revoking requires a slow state recovery process. A wide variety of bug fixes and other incremental improvements make up the bulk of commits in this series. As always I am grateful to the NFSD contributors, reviewers, testers, and bug reporters who participated during this cycle" * tag 'nfsd-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: (72 commits) nfsd: allow for up to 32 callback session slots nfs_common: must not hold RCU while calling nfsd_file_put_local nfsd: get rid of include ../internal.h nfsd: fix nfs4_openowner leak when concurrent nfsd4_open occur NFSD: Add nfsd4_copy time-to-live NFSD: Add a laundromat reaper for async copy state NFSD: Block DESTROY_CLIENTID only when there are ongoing async COPY operations NFSD: Handle an NFS4ERR_DELAY response to CB_OFFLOAD NFSD: Free async copy information in nfsd4_cb_offload_release() NFSD: Fix nfsd4_shutdown_copy() NFSD: Add a tracepoint to record canceled async COPY operations nfsd: make nfsd4_session->se_flags a bool nfsd: remove nfsd4_session->se_bchannel nfsd: make use of warning provided by refcount_t nfsd: Don't fail OP_SETCLIENTID when there are too many clients. svcrdma: fix miss destroy percpu_counter in svc_rdma_proc_init() xdrgen: Remove program_stat_to_errno() call sites xdrgen: Update the files included in client-side source code xdrgen: Remove check for "nfs_ok" in C templates xdrgen: Remove tracepoint call site ... |
||
|
Edward Adam Davis
|
ed95885549 |
Bluetooth: SCO: remove the redundant sco_conn_put
When adding conn, it is necessary to increase and retain the conn reference
count at the same time.
Another problem was fixed along the way, conn_put is missing when hcon is NULL
in the timeout routine.
Fixes:
|
||
|
Luiz Augusto von Dentz
|
a66dfaf18f |
Bluetooth: MGMT: Fix possible deadlocks
This fixes possible deadlocks like the following caused by
hci_cmd_sync_dequeue causing the destroy function to run:
INFO: task kworker/u19:0:143 blocked for more than 120 seconds.
Tainted: G W O 6.8.0-2024-03-19-intel-next-iLS-24ww14 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u19:0 state:D stack:0 pid:143 tgid:143 ppid:2 flags:0x00004000
Workqueue: hci0 hci_cmd_sync_work [bluetooth]
Call Trace:
<TASK>
__schedule+0x374/0xaf0
schedule+0x3c/0xf0
schedule_preempt_disabled+0x1c/0x30
__mutex_lock.constprop.0+0x3ef/0x7a0
__mutex_lock_slowpath+0x13/0x20
mutex_lock+0x3c/0x50
mgmt_set_connectable_complete+0xa4/0x150 [bluetooth]
? kfree+0x211/0x2a0
hci_cmd_sync_dequeue+0xae/0x130 [bluetooth]
? __pfx_cmd_complete_rsp+0x10/0x10 [bluetooth]
cmd_complete_rsp+0x26/0x80 [bluetooth]
mgmt_pending_foreach+0x4d/0x70 [bluetooth]
__mgmt_power_off+0x8d/0x180 [bluetooth]
? _raw_spin_unlock_irq+0x23/0x40
hci_dev_close_sync+0x445/0x5b0 [bluetooth]
hci_set_powered_sync+0x149/0x250 [bluetooth]
set_powered_sync+0x24/0x60 [bluetooth]
hci_cmd_sync_work+0x90/0x150 [bluetooth]
process_one_work+0x13e/0x300
worker_thread+0x2f7/0x420
? __pfx_worker_thread+0x10/0x10
kthread+0x107/0x140
? __pfx_kthread+0x10/0x10
ret_from_fork+0x3d/0x60
? __pfx_kthread+0x10/0x10
ret_from_fork_asm+0x1b/0x30
</TASK>
Tested-by: Kiran K <kiran.k@intel.com>
Fixes:
|
||
|
Luiz Augusto von Dentz
|
0b88294066 |
Bluetooth: MGMT: Fix slab-use-after-free Read in set_powered_sync
This fixes the following crash:
==================================================================
BUG: KASAN: slab-use-after-free in set_powered_sync+0x3a/0xc0 net/bluetooth/mgmt.c:1353
Read of size 8 at addr ffff888029b4dd18 by task kworker/u9:0/54
CPU: 1 UID: 0 PID: 54 Comm: kworker/u9:0 Not tainted 6.11.0-rc6-syzkaller-01155-gf723224742fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: hci0 hci_cmd_sync_work
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
print_address_description mm/kasan/report.c:377 [inline]
print_report+0x169/0x550 mm/kasan/report.c:488
q kasan_report+0x143/0x180 mm/kasan/report.c:601
set_powered_sync+0x3a/0xc0 net/bluetooth/mgmt.c:1353
hci_cmd_sync_work+0x22b/0x400 net/bluetooth/hci_sync.c:328
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd10 kernel/workqueue.c:3389
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
Allocated by task 5247:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
__kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387
kasan_kmalloc include/linux/kasan.h:211 [inline]
__kmalloc_cache_noprof+0x19c/0x2c0 mm/slub.c:4193
kmalloc_noprof include/linux/slab.h:681 [inline]
kzalloc_noprof include/linux/slab.h:807 [inline]
mgmt_pending_new+0x65/0x250 net/bluetooth/mgmt_util.c:269
mgmt_pending_add+0x36/0x120 net/bluetooth/mgmt_util.c:296
set_powered+0x3cd/0x5e0 net/bluetooth/mgmt.c:1394
hci_mgmt_cmd+0xc47/0x11d0 net/bluetooth/hci_sock.c:1712
hci_sock_sendmsg+0x7b8/0x11c0 net/bluetooth/hci_sock.c:1832
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
sock_write_iter+0x2dd/0x400 net/socket.c:1160
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa72/0xc90 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Freed by task 5246:
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
__kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2256 [inline]
slab_free mm/slub.c:4477 [inline]
kfree+0x149/0x360 mm/slub.c:4598
settings_rsp+0x2bc/0x390 net/bluetooth/mgmt.c:1443
mgmt_pending_foreach+0xd1/0x130 net/bluetooth/mgmt_util.c:259
__mgmt_power_off+0x112/0x420 net/bluetooth/mgmt.c:9455
hci_dev_close_sync+0x665/0x11a0 net/bluetooth/hci_sync.c:5191
hci_dev_do_close net/bluetooth/hci_core.c:483 [inline]
hci_dev_close+0x112/0x210 net/bluetooth/hci_core.c:508
sock_do_ioctl+0x158/0x460 net/socket.c:1222
sock_ioctl+0x629/0x8e0 net/socket.c:1341
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83gv
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Reported-by: syzbot+03d6270b6425df1605bf@syzkaller.appspotmail.com
Tested-by: syzbot+03d6270b6425df1605bf@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=03d6270b6425df1605bf
Fixes:
|
||
|
Eric Dumazet
|
9cfb5e7f0d |
net: hsr: fix hsr_init_sk() vs network/transport headers.
Following sequence in hsr_init_sk() is invalid :
skb_reset_mac_header(skb);
skb_reset_mac_len(skb);
skb_reset_network_header(skb);
skb_reset_transport_header(skb);
It is invalid because skb_reset_mac_len() needs the correct
network header, which should be after the mac header.
This patch moves the skb_reset_network_header()
and skb_reset_transport_header() before
the call to dev_hard_header().
As a result skb->mac_len is no longer set to a value
close to 65535.
Fixes:
|
||
|
Hangbin Liu
|
00b5b7aab9 |
net/ipv6: delete temporary address if mngtmpaddr is removed or unmanaged
RFC8981 section 3.4 says that existing temporary addresses must have their
lifetimes adjusted so that no temporary addresses should ever remain "valid"
or "preferred" longer than the incoming SLAAC Prefix Information. This would
strongly imply in Linux's case that if the "mngtmpaddr" address is deleted or
un-flagged as such, its corresponding temporary addresses must be cleared out
right away.
But now the temporary address is renewed even after ‘mngtmpaddr’ is removed
or becomes unmanaged as manage_tempaddrs() set temporary addresses
prefered/valid time to 0, and later in addrconf_verify_rtnl() all checkings
failed to remove the addresses. Fix this by deleting the temporary address
directly for these situations.
Fixes:
|
||
|
Sidraya Jayagond
|
ebaf81317e |
s390/iucv: MSG_PEEK causes memory leak in iucv_sock_destruct()
Passing MSG_PEEK flag to skb_recv_datagram() increments skb refcount
(skb->users) and iucv_sock_recvmsg() does not decrement skb refcount
at exit.
This results in skb memory leak in skb_queue_purge() and WARN_ON in
iucv_sock_destruct() during socket close. To fix this decrease
skb refcount by one if MSG_PEEK is set in order to prevent memory
leak and WARN_ON.
WARNING: CPU: 2 PID: 6292 at net/iucv/af_iucv.c:286 iucv_sock_destruct+0x144/0x1a0 [af_iucv]
CPU: 2 PID: 6292 Comm: afiucv_test_msg Kdump: loaded Tainted: G W 6.10.0-rc7 #1
Hardware name: IBM 3931 A01 704 (z/VM 7.3.0)
Call Trace:
[<001587c682c4aa98>] iucv_sock_destruct+0x148/0x1a0 [af_iucv]
[<001587c682c4a9d0>] iucv_sock_destruct+0x80/0x1a0 [af_iucv]
[<001587c704117a32>] __sk_destruct+0x52/0x550
[<001587c704104a54>] __sock_release+0xa4/0x230
[<001587c704104c0c>] sock_close+0x2c/0x40
[<001587c702c5f5a8>] __fput+0x2e8/0x970
[<001587c7024148c4>] task_work_run+0x1c4/0x2c0
[<001587c7023b0716>] do_exit+0x996/0x1050
[<001587c7023b13aa>] do_group_exit+0x13a/0x360
[<001587c7023b1626>] __s390x_sys_exit_group+0x56/0x60
[<001587c7022bccca>] do_syscall+0x27a/0x380
[<001587c7049a6a0c>] __do_syscall+0x9c/0x160
[<001587c7049ce8a8>] system_call+0x70/0x98
Last Breaking-Event-Address:
[<001587c682c4a9d4>] iucv_sock_destruct+0x84/0x1a0 [af_iucv]
Fixes:
|
||
|
James Chapman
|
5d066766c5 |
net/l2tp: fix warning in l2tp_exit_net found by syzbot
In l2tp's net exit handler, we check that an IDR is empty before
destroying it:
WARN_ON_ONCE(!idr_is_empty(&pn->l2tp_tunnel_idr));
idr_destroy(&pn->l2tp_tunnel_idr);
By forcing memory allocation failures in idr_alloc_32, syzbot is able
to provoke a condition where idr_is_empty returns false despite there
being no items in the IDR. This turns out to be because the radix tree
of the IDR contains only internal radix-tree nodes and it is this that
causes idr_is_empty to return false. The internal nodes are cleaned by
idr_destroy.
Use idr_for_each to check that the IDR is empty instead of
idr_is_empty to avoid the problem.
Reported-by: syzbot+332fe1e67018625f63c9@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=332fe1e67018625f63c9
Fixes:
|
||
|
Jakub Kicinski
|
3bf39fa849 |
netlink: fix false positive warning in extack during dumps
Commit under fixes extended extack reporting to dumps.
It works under normal conditions, because extack errors are
usually reported during ->start() or the first ->dump(),
it's quite rare that the dump starts okay but fails later.
If the dump does fail later, however, the input skb will
already have the initiating message pulled, so checking
if bad attr falls within skb->data will fail.
Switch the check to using nlh, which is always valid.
syzbot found a way to hit that scenario by filling up
the receive queue. In this case we initiate a dump
but don't call ->dump() until there is read space for
an skb.
WARNING: CPU: 1 PID: 5845 at net/netlink/af_netlink.c:2210 netlink_ack_tlv_fill+0x1a8/0x560 net/netlink/af_netlink.c:2209
RIP: 0010:netlink_ack_tlv_fill+0x1a8/0x560 net/netlink/af_netlink.c:2209
Call Trace:
<TASK>
netlink_dump_done+0x513/0x970 net/netlink/af_netlink.c:2250
netlink_dump+0x91f/0xe10 net/netlink/af_netlink.c:2351
netlink_recvmsg+0x6bb/0x11d0 net/netlink/af_netlink.c:1983
sock_recvmsg_nosec net/socket.c:1051 [inline]
sock_recvmsg+0x22f/0x280 net/socket.c:1073
__sys_recvfrom+0x246/0x3d0 net/socket.c:2267
__do_sys_recvfrom net/socket.c:2285 [inline]
__se_sys_recvfrom net/socket.c:2281 [inline]
__x64_sys_recvfrom+0xde/0x100 net/socket.c:2281
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff37dd17a79
Reported-by: syzbot+d4373fa8042c06cefa84@syzkaller.appspotmail.com
Fixes:
|
||
|
Eric Dumazet
|
9b234a97b1 |
rtnetlink: fix rtnl_dump_ifinfo() error path
syzbot found that rtnl_dump_ifinfo() could return with a lock held [1]
Move code around so that rtnl_link_ops_put() and put_net()
can be called at the end of this function.
[1]
WARNING: lock held when returning to user space!
6.12.0-rc7-syzkaller-01681-g38f83a57aa8e #0 Not tainted
syz-executor399/5841 is leaving the kernel with locks still held!
1 lock held by syz-executor399/5841:
#0: ffffffff8f46c2a0 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8f46c2a0 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8f46c2a0 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x22/0x250 net/core/rtnetlink.c:555
Fixes:
|
||
|
Dominique Martinet
|
e0260d530b |
net/9p/usbg: allow building as standalone module
There is no reason only the usbg transport would not be its own module,
so make it tristate.
In particular, this fixes a couple of issues the current bool had:
- trans_usbg was apparently not compiled at all when NET_9P=m
- the workaround added in commit
|
||
|
Alex Zenla
|
e43c608f40 |
9p/xen: fix release of IRQ
Kernel logs indicate an IRQ was double-freed.
Pass correct device ID during IRQ release.
Fixes:
|
||
|
Linus Torvalds
|
fcc79e1714 |
Networking changes for 6.13.
The most significant set of changes is the per netns RTNL. The new
behavior is disabled by default, regression risk should be contained.
Notably the new config knob PTP_1588_CLOCK_VMCLOCK will inherit its
default value from PTP_1588_CLOCK_KVM, as the first is intended to be
a more reliable replacement for the latter.
Core
----
- Started a very large, in-progress, effort to make the RTNL lock
scope per network-namespace, thus reducing the lock contention
significantly in the containerized use-case, comprising:
- RCU-ified some relevant slices of the FIB control path
- introduce basic per netns locking helpers
- namespacified the IPv4 address hash table
- remove rtnl_register{,_module}() in favour of rtnl_register_many()
- refactor rtnl_{new,del,set}link() moving as much validation as
possible out of RTNL lock
- convert all phonet doit() and dumpit() handlers to RCU
- convert IPv4 addresses manipulation to per-netns RTNL
- convert virtual interface creation to per-netns RTNL
the per-netns lock infra is guarded by the CONFIG_DEBUG_NET_SMALL_RTNL
knob, disabled by default ad interim.
- Introduce NAPI suspension, to efficiently switching between busy
polling (NAPI processing suspended) and normal processing.
- Migrate the IPv4 routing input, output and control path from direct
ToS usage to DSCP macros. This is a work in progress to make ECN
handling consistent and reliable.
- Add drop reasons support to the IPv4 rotue input path, allowing
better introspection in case of packets drop.
- Make FIB seqnum lockless, dropping RTNL protection for read
access.
- Make inet{,v6} addresses hashing less predicable.
- Allow providing timestamp OPT_ID via cmsg, to correlate TX packets
and timestamps
Things we sprinkled into general kernel code
--------------------------------------------
- Add small file operations for debugfs, to reduce the struct ops size.
- Refactoring and optimization for the implementation of page_frag API,
This is a preparatory work to consolidate the page_frag
implementation.
Netfilter
---------
- Optimize set element transactions to reduce memory consumption
- Extended netlink error reporting for attribute parser failure.
- Make legacy xtables configs user selectable, giving users
the option to configure iptables without enabling any other config.
- Address a lot of false-positive RCU issues, pointed by recent
CI improvements.
BPF
---
- Put xsk sockets on a struct diet and add various cleanups. Overall,
this helps to bump performance by 12% for some workloads.
- Extend BPF selftests to increase coverage of XDP features in
combination with BPF cpumap.
- Optimize and homogenize bpf_csum_diff helper for all archs and also
add a batch of new BPF selftests for it.
- Extend netkit with an option to delegate skb->{mark,priority}
scrubbing to its BPF program.
- Make the bpf_get_netns_cookie() helper available also to tc(x) BPF
programs.
Protocols
---------
- Introduces 4-tuple hash for connected udp sockets, speeding-up
significantly connected sockets lookup.
- Add a fastpath for some TCP timers that usually expires after close,
the socket lock contention.
- Add inbound and outbound xfrm state caches to speed up state lookups.
- Avoid sending MPTCP advertisements on stale subflows, reducing
risks on loosing them.
- Make neighbours table flushing more scalable, maintaining per device
neigh lists.
Driver API
----------
- Introduce a unified interface to configure transmission H/W shaping,
and expose it to user-space via generic-netlink.
- Add support for per-NAPI config via netlink. This makes napi
configuration persistent across queues removal and re-creation.
Requires driver updates, currently supported drivers are:
nVidia/Mellanox mlx4 and mlx5, Broadcom brcm and Intel ice.
- Add ethtool support for writing SFP / PHY firmware blocks.
- Track RSS context allocation from ethtool core.
- Implement support for mirroring to DSA CPU port, via TC mirror
offload.
- Consolidate FDB updates notification, to avoid duplicates on
device-specific entries.
- Expose DPLL clock quality level to the user-space.
- Support master-slave PHY config via device tree.
Tests and tooling
-----------------
- forwarding: introduce deferred commands, to simplify
the cleanup phase
Drivers
-------
- Updated several drivers - Amazon vNic, Google vNic, Microsoft vNic,
Intel e1000e and Broadcom Tigon3 - to use netdev-genl to link the
IRQs and queues to NAPI IDs, allowing busy polling and better
introspection.
- Ethernet high-speed NICs:
- nVidia/Mellanox:
- mlx5:
- a large refactor to implement support for cross E-Switch
scheduling
- refactor H/W conter management to let it scale better
- H/W GRO cleanups
- Intel (100G, ice)::
- adds support for ethtool reset
- implement support for per TX queue H/W shaping
- AMD/Solarflare:
- implement per device queue stats support
- Broadcom (bnxt):
- improve wildcard l4proto on IPv4/IPv6 ntuple rules
- Marvell Octeon:
- Adds representor support for each Resource Virtualization Unit
(RVU) device.
- Hisilicon:
- adds support for the BMC Gigabit Ethernet
- IBM (EMAC):
- driver cleanup and modernization
- Cisco (VIC):
- raise the queues number limit to 256
- Ethernet virtual:
- Google vNIC:
- implements page pool support
- macsec:
- inherit lower device's features and TSO limits when offloading
- virtio_net:
- enable premapped mode by default
- support for XDP socket(AF_XDP) zerocopy TX
- wireguard:
- set the TSO max size to be GSO_MAX_SIZE, to aggregate larger
packets.
- Ethernet NICs embedded and virtual:
- Broadcom ASP:
- enable software timestamping
- Freescale:
- add enetc4 PF driver
- MediaTek: Airoha SoC:
- implement BQL support
- RealTek r8169:
- enable TSO by default on r8168/r8125
- implement extended ethtool stats
- Renesas AVB:
- enable TX checksum offload
- Synopsys (stmmac):
- support header splitting for vlan tagged packets
- move common code for DWMAC4 and DWXGMAC into a separate FPE
module.
- Add the dwmac driver support for T-HEAD TH1520 SoC
- Synopsys (xpcs):
- driver refactor and cleanup
- TI:
- icssg_prueth: add VLAN offload support
- Xilinx emaclite:
- adds clock support
- Ethernet switches:
- Microchip:
- implement support for the lan969x Ethernet switch family
- add LAN9646 switch support to KSZ DSA driver
- Ethernet PHYs:
- Marvel: 88q2x: enable auto negotiation
- Microchip: add support for LAN865X Rev B1 and LAN867X Rev C1/C2
- PTP:
- Add support for the Amazon virtual clock device
- Add PtP driver for s390 clocks
- WiFi:
- mac80211
- EHT 1024 aggregation size for transmissions
- new operation to indicate that a new interface is to be added
- support radio separation of multi-band devices
- move wireless extension spy implementation to libiw
- Broadcom:
- brcmfmac: optional LPO clock support
- Microchip:
- add support for Atmel WILC3000
- Qualcomm (ath12k):
- firmware coredump collection support
- add debugfs support for a multitude of statistics
- Qualcomm (ath5k):
- Arcadyan ARV45XX AR2417 & Gigaset SX76[23] AR241[34]A support
- Realtek:
- rtw88: 8821au and 8812au USB adapters support
- rtw89: add thermal protection
- rtw89: fine tune BT-coexsitence to improve user experience
- rtw89: firmware secure boot for WiFi 6 chip
- Bluetooth
- add Qualcomm WCN785x support for ids Foxconn 0xe0fc/0xe0f3 and
0x13d3:0x3623
- add Realtek RTL8852BE support for id Foxconn 0xe123
- add MediaTek MT7920 support for wireless module ids
- btintel_pcie: add handshake between driver and firmware
- btintel_pcie: add recovery mechanism
- btnxpuart: add GPIO support to power save feature
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
-----BEGIN PGP SIGNATURE-----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=GzPr
-----END PGP SIGNATURE-----
Merge tag 'net-next-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni:
"The most significant set of changes is the per netns RTNL. The new
behavior is disabled by default, regression risk should be contained.
Notably the new config knob PTP_1588_CLOCK_VMCLOCK will inherit its
default value from PTP_1588_CLOCK_KVM, as the first is intended to be
a more reliable replacement for the latter.
Core:
- Started a very large, in-progress, effort to make the RTNL lock
scope per network-namespace, thus reducing the lock contention
significantly in the containerized use-case, comprising:
- RCU-ified some relevant slices of the FIB control path
- introduce basic per netns locking helpers
- namespacified the IPv4 address hash table
- remove rtnl_register{,_module}() in favour of
rtnl_register_many()
- refactor rtnl_{new,del,set}link() moving as much validation as
possible out of RTNL lock
- convert all phonet doit() and dumpit() handlers to RCU
- convert IPv4 addresses manipulation to per-netns RTNL
- convert virtual interface creation to per-netns RTNL
the per-netns lock infrastructure is guarded by the
CONFIG_DEBUG_NET_SMALL_RTNL knob, disabled by default ad interim.
- Introduce NAPI suspension, to efficiently switching between busy
polling (NAPI processing suspended) and normal processing.
- Migrate the IPv4 routing input, output and control path from direct
ToS usage to DSCP macros. This is a work in progress to make ECN
handling consistent and reliable.
- Add drop reasons support to the IPv4 rotue input path, allowing
better introspection in case of packets drop.
- Make FIB seqnum lockless, dropping RTNL protection for read access.
- Make inet{,v6} addresses hashing less predicable.
- Allow providing timestamp OPT_ID via cmsg, to correlate TX packets
and timestamps
Things we sprinkled into general kernel code:
- Add small file operations for debugfs, to reduce the struct ops
size.
- Refactoring and optimization for the implementation of page_frag
API, This is a preparatory work to consolidate the page_frag
implementation.
Netfilter:
- Optimize set element transactions to reduce memory consumption
- Extended netlink error reporting for attribute parser failure.
- Make legacy xtables configs user selectable, giving users the
option to configure iptables without enabling any other config.
- Address a lot of false-positive RCU issues, pointed by recent CI
improvements.
BPF:
- Put xsk sockets on a struct diet and add various cleanups. Overall,
this helps to bump performance by 12% for some workloads.
- Extend BPF selftests to increase coverage of XDP features in
combination with BPF cpumap.
- Optimize and homogenize bpf_csum_diff helper for all archs and also
add a batch of new BPF selftests for it.
- Extend netkit with an option to delegate skb->{mark,priority}
scrubbing to its BPF program.
- Make the bpf_get_netns_cookie() helper available also to tc(x) BPF
programs.
Protocols:
- Introduces 4-tuple hash for connected udp sockets, speeding-up
significantly connected sockets lookup.
- Add a fastpath for some TCP timers that usually expires after
close, the socket lock contention.
- Add inbound and outbound xfrm state caches to speed up state
lookups.
- Avoid sending MPTCP advertisements on stale subflows, reducing
risks on loosing them.
- Make neighbours table flushing more scalable, maintaining per
device neigh lists.
Driver API:
- Introduce a unified interface to configure transmission H/W
shaping, and expose it to user-space via generic-netlink.
- Add support for per-NAPI config via netlink. This makes napi
configuration persistent across queues removal and re-creation.
Requires driver updates, currently supported drivers are:
nVidia/Mellanox mlx4 and mlx5, Broadcom brcm and Intel ice.
- Add ethtool support for writing SFP / PHY firmware blocks.
- Track RSS context allocation from ethtool core.
- Implement support for mirroring to DSA CPU port, via TC mirror
offload.
- Consolidate FDB updates notification, to avoid duplicates on
device-specific entries.
- Expose DPLL clock quality level to the user-space.
- Support master-slave PHY config via device tree.
Tests and tooling:
- forwarding: introduce deferred commands, to simplify the cleanup
phase
Drivers:
- Updated several drivers - Amazon vNic, Google vNic, Microsoft vNic,
Intel e1000e and Broadcom Tigon3 - to use netdev-genl to link the
IRQs and queues to NAPI IDs, allowing busy polling and better
introspection.
- Ethernet high-speed NICs:
- nVidia/Mellanox:
- mlx5:
- a large refactor to implement support for cross E-Switch
scheduling
- refactor H/W conter management to let it scale better
- H/W GRO cleanups
- Intel (100G, ice)::
- add support for ethtool reset
- implement support for per TX queue H/W shaping
- AMD/Solarflare:
- implement per device queue stats support
- Broadcom (bnxt):
- improve wildcard l4proto on IPv4/IPv6 ntuple rules
- Marvell Octeon:
- Add representor support for each Resource Virtualization Unit
(RVU) device.
- Hisilicon:
- add support for the BMC Gigabit Ethernet
- IBM (EMAC):
- driver cleanup and modernization
- Cisco (VIC):
- raise the queues number limit to 256
- Ethernet virtual:
- Google vNIC:
- implement page pool support
- macsec:
- inherit lower device's features and TSO limits when
offloading
- virtio_net:
- enable premapped mode by default
- support for XDP socket(AF_XDP) zerocopy TX
- wireguard:
- set the TSO max size to be GSO_MAX_SIZE, to aggregate larger
packets.
- Ethernet NICs embedded and virtual:
- Broadcom ASP:
- enable software timestamping
- Freescale:
- add enetc4 PF driver
- MediaTek: Airoha SoC:
- implement BQL support
- RealTek r8169:
- enable TSO by default on r8168/r8125
- implement extended ethtool stats
- Renesas AVB:
- enable TX checksum offload
- Synopsys (stmmac):
- support header splitting for vlan tagged packets
- move common code for DWMAC4 and DWXGMAC into a separate FPE
module.
- add dwmac driver support for T-HEAD TH1520 SoC
- Synopsys (xpcs):
- driver refactor and cleanup
- TI:
- icssg_prueth: add VLAN offload support
- Xilinx emaclite:
- add clock support
- Ethernet switches:
- Microchip:
- implement support for the lan969x Ethernet switch family
- add LAN9646 switch support to KSZ DSA driver
- Ethernet PHYs:
- Marvel: 88q2x: enable auto negotiation
- Microchip: add support for LAN865X Rev B1 and LAN867X Rev C1/C2
- PTP:
- Add support for the Amazon virtual clock device
- Add PtP driver for s390 clocks
- WiFi:
- mac80211
- EHT 1024 aggregation size for transmissions
- new operation to indicate that a new interface is to be added
- support radio separation of multi-band devices
- move wireless extension spy implementation to libiw
- Broadcom:
- brcmfmac: optional LPO clock support
- Microchip:
- add support for Atmel WILC3000
- Qualcomm (ath12k):
- firmware coredump collection support
- add debugfs support for a multitude of statistics
- Qualcomm (ath5k):
- Arcadyan ARV45XX AR2417 & Gigaset SX76[23] AR241[34]A support
- Realtek:
- rtw88: 8821au and 8812au USB adapters support
- rtw89: add thermal protection
- rtw89: fine tune BT-coexsitence to improve user experience
- rtw89: firmware secure boot for WiFi 6 chip
- Bluetooth
- add Qualcomm WCN785x support for ids Foxconn 0xe0fc/0xe0f3 and
0x13d3:0x3623
- add Realtek RTL8852BE support for id Foxconn 0xe123
- add MediaTek MT7920 support for wireless module ids
- btintel_pcie: add handshake between driver and firmware
- btintel_pcie: add recovery mechanism
- btnxpuart: add GPIO support to power save feature"
* tag 'net-next-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1475 commits)
mm: page_frag: fix a compile error when kernel is not compiled
Documentation: tipc: fix formatting issue in tipc.rst
selftests: nic_performance: Add selftest for performance of NIC driver
selftests: nic_link_layer: Add selftest case for speed and duplex states
selftests: nic_link_layer: Add link layer selftest for NIC driver
bnxt_en: Add FW trace coredump segments to the coredump
bnxt_en: Add a new ethtool -W dump flag
bnxt_en: Add 2 parameters to bnxt_fill_coredump_seg_hdr()
bnxt_en: Add functions to copy host context memory
bnxt_en: Do not free FW log context memory
bnxt_en: Manage the FW trace context memory
bnxt_en: Allocate backing store memory for FW trace logs
bnxt_en: Add a 'force' parameter to bnxt_free_ctx_mem()
bnxt_en: Refactor bnxt_free_ctx_mem()
bnxt_en: Add mem_valid bit to struct bnxt_ctx_mem_type
bnxt_en: Update firmware interface spec to 1.10.3.85
selftests/bpf: Add some tests with sockmap SK_PASS
bpf: fix recursive lock when verdict program return SK_PASS
wireguard: device: support big tcp GSO
wireguard: selftests: load nf_conntrack if not present
...
|
||
|
Linus Torvalds
|
6e95ef0258 |
bpf-next-bpf-next-6.13
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE+soXsSLHKoYyzcli6rmadz2vbToFAmc7hIQACgkQ6rmadz2v bTrcRA/+MsUOzJPnjokonHwk8X4KQM21gOua/sUcGArLVGF/JoW5/b1W8UBQ0y5+ +okYaRNGpwF0/2S8M5FAYpM7VSPLl1U7Rihr55I63D9kbAo0pDQwpn4afQFuZhaC l7MzkhBHS7XXx5/70APOzy3kz1GDYvz39jiWuAAhRqVejFO+fa4pDz4W+Ht7jYTQ jJOLn4vJna9fSfVf/U/bbdz5lL0lncIiEnRIEbF7EszbF2CA7sa+/KFENGM7ChEo UlxK2Xz5fpzgT6htZRjMr6jmupfg7gzdT4moOysQQcjkllvv6/4MD0s/GLShtG9H SmpaptpYCEGXLuApGzkSddwiT6iUMTqQr7zs6LPp0gPh+4Z0sSPNoBtBp2v0aVDl w0zhVhMfoF66rMG+IZY684CsMGg5h8UsOS46KLjSU0fW2HpGM7+zZLpXOaGkU3OH UV0womPT/C2kS2fpOn9F91O8qMjOZ4EXd+zuRtIRv9CeuVIpCT9R13lEYn+wfr6d aUci8wybha1UOAvkRiXiqWOPS+0Z/arrSbCSDMQF6DevLpQl0noVbTVssWXcRdUE 9Ve6J0yS29WxNWFtuuw4xP5NcG1AnRXVGh215TuVBX7xK9X/hnDDhfalltsjXfnd m1f64FxU2SGp2D7X8BX/6Aeyo6mITE6I3SNMUrcvk1Zid36zhy8= =TXGS -----END PGP SIGNATURE----- Merge tag 'bpf-next-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Pull bpf updates from Alexei Starovoitov: - Add BPF uprobe session support (Jiri Olsa) - Optimize uprobe performance (Andrii Nakryiko) - Add bpf_fastcall support to helpers and kfuncs (Eduard Zingerman) - Avoid calling free_htab_elem() under hash map bucket lock (Hou Tao) - Prevent tailcall infinite loop caused by freplace (Leon Hwang) - Mark raw_tracepoint arguments as nullable (Kumar Kartikeya Dwivedi) - Introduce uptr support in the task local storage map (Martin KaFai Lau) - Stringify errno log messages in libbpf (Mykyta Yatsenko) - Add kmem_cache BPF iterator for perf's lock profiling (Namhyung Kim) - Support BPF objects of either endianness in libbpf (Tony Ambardar) - Add ksym to struct_ops trampoline to fix stack trace (Xu Kuohai) - Introduce private stack for eligible BPF programs (Yonghong Song) - Migrate samples/bpf tests to selftests/bpf test_progs (Daniel T. Lee) - Migrate test_sock to selftests/bpf test_progs (Jordan Rife) * tag 'bpf-next-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (152 commits) libbpf: Change hash_combine parameters from long to unsigned long selftests/bpf: Fix build error with llvm 19 libbpf: Fix memory leak in bpf_program__attach_uprobe_multi bpf: use common instruction history across all states bpf: Add necessary migrate_disable to range_tree. bpf: Do not alloc arena on unsupported arches selftests/bpf: Set test path for token/obj_priv_implicit_token_envvar selftests/bpf: Add a test for arena range tree algorithm bpf: Introduce range_tree data structure and use it in bpf arena samples/bpf: Remove unused variable in xdp2skb_meta_kern.c samples/bpf: Remove unused variables in tc_l2_redirect_kern.c bpftool: Cast variable `var` to long long bpf, x86: Propagate tailcall info only for subprogs bpf: Add kernel symbol for struct_ops trampoline bpf: Use function pointers count as struct_ops links count bpf: Remove unused member rcu from bpf_struct_ops_map selftests/bpf: Add struct_ops prog private stack tests bpf: Support private stack for struct_ops progs selftests/bpf: Add tracing prog private stack tests bpf, x86: Support private stack in jit ... |
||
|
Alex Zenla
|
7ef3ae82a6 |
9p/xen: fix init sequence
Large amount of mount hangs observed during hotplugging of 9pfs devices. The
9pfs Xen driver attempts to initialize itself more than once, causing the
frontend and backend to disagree: the backend listens on a channel that the
frontend does not send on, resulting in stalled processing.
Only allow initialization of 9p frontend once.
Fixes:
|
||
|
Linus Torvalds
|
bf9aa14fc5 |
A rather large update for timekeeping and timers:
- The final step to get rid of auto-rearming posix-timers
posix-timers are currently auto-rearmed by the kernel when the signal
of the timer is ignored so that the timer signal can be delivered once
the corresponding signal is unignored.
This requires to throttle the timer to prevent a DoS by small intervals
and keeps the system pointlessly out of low power states for no value.
This is a long standing non-trivial problem due to the lock order of
posix-timer lock and the sighand lock along with life time issues as
the timer and the sigqueue have different life time rules.
Cure this by:
* Embedding the sigqueue into the timer struct to have the same life
time rules. Aside of that this also avoids the lookup of the timer
in the signal delivery and rearm path as it's just a always valid
container_of() now.
* Queuing ignored timer signals onto a seperate ignored list.
* Moving queued timer signals onto the ignored list when the signal is
switched to SIG_IGN before it could be delivered.
* Walking the ignored list when SIG_IGN is lifted and requeue the
signals to the actual signal lists. This allows the signal delivery
code to rearm the timer.
This also required to consolidate the signal delivery rules so they are
consistent across all situations. With that all self test scenarios
finally succeed.
- Core infrastructure for VFS multigrain timestamping
This is required to allow the kernel to use coarse grained time stamps
by default and switch to fine grained time stamps when inode attributes
are actively observed via getattr().
These changes have been provided to the VFS tree as well, so that the
VFS specific infrastructure could be built on top.
- Cleanup and consolidation of the sleep() infrastructure
* Move all sleep and timeout functions into one file
* Rework udelay() and ndelay() into proper documented inline functions
and replace the hardcoded magic numbers by proper defines.
* Rework the fsleep() implementation to take the reality of the timer
wheel granularity on different HZ values into account. Right now the
boundaries are hard coded time ranges which fail to provide the
requested accuracy on different HZ settings.
* Update documentation for all sleep/timeout related functions and fix
up stale documentation links all over the place
* Fixup a few usage sites
- Rework of timekeeping and adjtimex(2) to prepare for multiple PTP clocks
A system can have multiple PTP clocks which are participating in
seperate and independent PTP clock domains. So far the kernel only
considers the PTP clock which is based on CLOCK TAI relevant as that's
the clock which drives the timekeeping adjustments via the various user
space daemons through adjtimex(2).
The non TAI based clock domains are accessible via the file descriptor
based posix clocks, but their usability is very limited. They can't be
accessed fast as they always go all the way out to the hardware and
they cannot be utilized in the kernel itself.
As Time Sensitive Networking (TSN) gains traction it is required to
provide fast user and kernel space access to these clocks.
The approach taken is to utilize the timekeeping and adjtimex(2)
infrastructure to provide this access in a similar way how the kernel
provides access to clock MONOTONIC, REALTIME etc.
Instead of creating a duplicated infrastructure this rework converts
timekeeping and adjtimex(2) into generic functionality which operates
on pointers to data structures instead of using static variables.
This allows to provide time accessors and adjtimex(2) functionality for
the independent PTP clocks in a subsequent step.
- Consolidate hrtimer initialization
hrtimers are set up by initializing the data structure and then
seperately setting the callback function for historical reasons.
That's an extra unnecessary step and makes Rust support less straight
forward than it should be.
Provide a new set of hrtimer_setup*() functions and convert the core
code and a few usage sites of the less frequently used interfaces over.
The bulk of the htimer_init() to hrtimer_setup() conversion is already
prepared and scheduled for the next merge window.
- Drivers:
* Ensure that the global timekeeping clocksource is utilizing the
cluster 0 timer on MIPS multi-cluster systems.
Otherwise CPUs on different clusters use their cluster specific
clocksource which is not guaranteed to be synchronized with other
clusters.
* Mostly boring cleanups, fixes, improvements and code movement
-----BEGIN PGP SIGNATURE-----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=2VC6
-----END PGP SIGNATURE-----
Merge tag 'timers-core-2024-11-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
"A rather large update for timekeeping and timers:
- The final step to get rid of auto-rearming posix-timers
posix-timers are currently auto-rearmed by the kernel when the
signal of the timer is ignored so that the timer signal can be
delivered once the corresponding signal is unignored.
This requires to throttle the timer to prevent a DoS by small
intervals and keeps the system pointlessly out of low power states
for no value. This is a long standing non-trivial problem due to
the lock order of posix-timer lock and the sighand lock along with
life time issues as the timer and the sigqueue have different life
time rules.
Cure this by:
- Embedding the sigqueue into the timer struct to have the same
life time rules. Aside of that this also avoids the lookup of
the timer in the signal delivery and rearm path as it's just a
always valid container_of() now.
- Queuing ignored timer signals onto a seperate ignored list.
- Moving queued timer signals onto the ignored list when the
signal is switched to SIG_IGN before it could be delivered.
- Walking the ignored list when SIG_IGN is lifted and requeue the
signals to the actual signal lists. This allows the signal
delivery code to rearm the timer.
This also required to consolidate the signal delivery rules so they
are consistent across all situations. With that all self test
scenarios finally succeed.
- Core infrastructure for VFS multigrain timestamping
This is required to allow the kernel to use coarse grained time
stamps by default and switch to fine grained time stamps when inode
attributes are actively observed via getattr().
These changes have been provided to the VFS tree as well, so that
the VFS specific infrastructure could be built on top.
- Cleanup and consolidation of the sleep() infrastructure
- Move all sleep and timeout functions into one file
- Rework udelay() and ndelay() into proper documented inline
functions and replace the hardcoded magic numbers by proper
defines.
- Rework the fsleep() implementation to take the reality of the
timer wheel granularity on different HZ values into account.
Right now the boundaries are hard coded time ranges which fail
to provide the requested accuracy on different HZ settings.
- Update documentation for all sleep/timeout related functions
and fix up stale documentation links all over the place
- Fixup a few usage sites
- Rework of timekeeping and adjtimex(2) to prepare for multiple PTP
clocks
A system can have multiple PTP clocks which are participating in
seperate and independent PTP clock domains. So far the kernel only
considers the PTP clock which is based on CLOCK TAI relevant as
that's the clock which drives the timekeeping adjustments via the
various user space daemons through adjtimex(2).
The non TAI based clock domains are accessible via the file
descriptor based posix clocks, but their usability is very limited.
They can't be accessed fast as they always go all the way out to
the hardware and they cannot be utilized in the kernel itself.
As Time Sensitive Networking (TSN) gains traction it is required to
provide fast user and kernel space access to these clocks.
The approach taken is to utilize the timekeeping and adjtimex(2)
infrastructure to provide this access in a similar way how the
kernel provides access to clock MONOTONIC, REALTIME etc.
Instead of creating a duplicated infrastructure this rework
converts timekeeping and adjtimex(2) into generic functionality
which operates on pointers to data structures instead of using
static variables.
This allows to provide time accessors and adjtimex(2) functionality
for the independent PTP clocks in a subsequent step.
- Consolidate hrtimer initialization
hrtimers are set up by initializing the data structure and then
seperately setting the callback function for historical reasons.
That's an extra unnecessary step and makes Rust support less
straight forward than it should be.
Provide a new set of hrtimer_setup*() functions and convert the
core code and a few usage sites of the less frequently used
interfaces over.
The bulk of the htimer_init() to hrtimer_setup() conversion is
already prepared and scheduled for the next merge window.
- Drivers:
- Ensure that the global timekeeping clocksource is utilizing the
cluster 0 timer on MIPS multi-cluster systems.
Otherwise CPUs on different clusters use their cluster specific
clocksource which is not guaranteed to be synchronized with
other clusters.
- Mostly boring cleanups, fixes, improvements and code movement"
* tag 'timers-core-2024-11-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (140 commits)
posix-timers: Fix spurious warning on double enqueue versus do_exit()
clocksource/drivers/arm_arch_timer: Use of_property_present() for non-boolean properties
clocksource/drivers/gpx: Remove redundant casts
clocksource/drivers/timer-ti-dm: Fix child node refcount handling
dt-bindings: timer: actions,owl-timer: convert to YAML
clocksource/drivers/ralink: Add Ralink System Tick Counter driver
clocksource/drivers/mips-gic-timer: Always use cluster 0 counter as clocksource
clocksource/drivers/timer-ti-dm: Don't fail probe if int not found
clocksource/drivers:sp804: Make user selectable
clocksource/drivers/dw_apb: Remove unused dw_apb_clockevent functions
hrtimers: Delete hrtimer_init_on_stack()
alarmtimer: Switch to use hrtimer_setup() and hrtimer_setup_on_stack()
io_uring: Switch to use hrtimer_setup_on_stack()
sched/idle: Switch to use hrtimer_setup_on_stack()
hrtimers: Delete hrtimer_init_sleeper_on_stack()
wait: Switch to use hrtimer_setup_sleeper_on_stack()
timers: Switch to use hrtimer_setup_sleeper_on_stack()
net: pktgen: Switch to use hrtimer_setup_sleeper_on_stack()
futex: Switch to use hrtimer_setup_sleeper_on_stack()
fs/aio: Switch to use hrtimer_setup_sleeper_on_stack()
...
|
||
|
Linus Torvalds
|
8a7fa81137 |
Random number generator updates for Linux 6.13-rc1.
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEq5lC5tSkz8NBJiCnSfxwEqXeA64FAmc6oE0ACgkQSfxwEqXe A65n5BAAtNmfBJhYRiC6Svsg7+ktHmhCAHoHwnP7sv+bjs81FRAEv21CsfI+02Nb zUvaPuyiLtYzlWxzE5Yg44v1cADHAq+QZE1Fg5yl7ge6zPZ3+S1pv/8suNSyyI2M PKvh1sb4OkUtqplveYSuP1J87u55zAtV9mP9qC3hSlY3XkeQUObt9Awss8peOMdv sH2AxwBlRkqFXpY2worxlfg3p5iLemb3AUZ3f0Jc6fRmOagSJCt7i4mDrWo3EXke 90Ao8ypY0x3YVGRFACHnxCS53X20HGwLxm7jdicfriMCzAJ6JQR6asO+NYnXR+Ev 9Za3UquVHP6HbQGWj6d1k5k2nF+IbkTHTgFBPRK/CY9ZpVbP04B2K7tE1gmT81wj AscRGi9RBVBPKAUguyi99MXYlprFG/ZTLOux3hvdarv5u0bP94eXmy1FrRM+IO0r u4BiQ39FlkDdtRxjzKfCiKkMrf3NmFEciZJhxCnflzmOBaj64r1hRt/ea8Bjxvp3 a4k0MfULmcEn2JwPiT1/Swz45ypZQc4OgbP87SCU8P0a23r21r2oK+9v3No/rCzB TI0fP6ykDTFQoiKUOSg1mJmkipdjeDyQ9E+0XIDsKd+T8Yv9rFoaV6RWoMrkt4AJ Yea9+V+XEI8F3SjhdD4OL/s3/+bjTjnRHDaXnJf2XzGmXcuvnbs= =o4ww -----END PGP SIGNATURE----- Merge tag 'random-6.13-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random Pull random number generator updates from Jason Donenfeld: "This contains a single series from Uros to replace uses of <linux/random.h> with prandom.h or other more specific headers as needed, in order to avoid a circular header issue. Uros' goal is to be able to use percpu.h from prandom.h, which will then allow him to define __percpu in percpu.h rather than in compiler_types.h" * tag 'random-6.13-rc1-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random: prandom: Include <linux/percpu.h> in <linux/prandom.h> random: Do not include <linux/prandom.h> in <linux/random.h> netem: Include <linux/prandom.h> in sch_netem.c lib/test_scanf: Include <linux/prandom.h> instead of <linux/random.h> lib/test_parman: Include <linux/prandom.h> instead of <linux/random.h> bpf/tests: Include <linux/prandom.h> instead of <linux/random.h> lib/rbtree-test: Include <linux/prandom.h> instead of <linux/random.h> random32: Include <linux/prandom.h> instead of <linux/random.h> kunit: string-stream-test: Include <linux/prandom.h> lib/interval_tree_test.c: Include <linux/prandom.h> instead of <linux/random.h> bpf: Include <linux/prandom.h> instead of <linux/random.h> scsi: libfcoe: Include <linux/prandom.h> instead of <linux/random.h> fscrypt: Include <linux/once.h> in fs/crypto/keyring.c mtd: tests: Include <linux/prandom.h> instead of <linux/random.h> media: vivid: Include <linux/prandom.h> in vivid-vid-cap.c drm/lib: Include <linux/prandom.h> instead of <linux/random.h> drm/i915/selftests: Include <linux/prandom.h> instead of <linux/random.h> crypto: testmgr: Include <linux/prandom.h> instead of <linux/random.h> x86/kaslr: Include <linux/prandom.h> instead of <linux/random.h> |
||
|
Paolo Abeni
|
dd7207838d |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Merge in late fixes to prepare for the 6.13 net-next PR. Conflicts: include/linux/phy.h |
||
|
Jiayuan Chen
|
8ca2a1eead |
bpf: fix recursive lock when verdict program return SK_PASS
When the stream_verdict program returns SK_PASS, it places the received skb
into its own receive queue, but a recursive lock eventually occurs, leading
to an operating system deadlock. This issue has been present since v6.9.
'''
sk_psock_strp_data_ready
write_lock_bh(&sk->sk_callback_lock)
strp_data_ready
strp_read_sock
read_sock -> tcp_read_sock
strp_recv
cb.rcv_msg -> sk_psock_strp_read
# now stream_verdict return SK_PASS without peer sock assign
__SK_PASS = sk_psock_map_verd(SK_PASS, NULL)
sk_psock_verdict_apply
sk_psock_skb_ingress_self
sk_psock_skb_ingress_enqueue
sk_psock_data_ready
read_lock_bh(&sk->sk_callback_lock) <= dead lock
'''
This topic has been discussed before, but it has not been fixed.
Previous discussion:
https://lore.kernel.org/all/6684a5864ec86_403d20898@john.notmuch
Fixes:
|
||
|
Breno Leitao
|
c69c5e10ad |
netpoll: Use rcu_access_pointer() in __netpoll_setup
The ndev->npinfo pointer in __netpoll_setup() is RCU-protected but is being accessed directly for a NULL check. While no RCU read lock is held in this context, we should still use proper RCU primitives for consistency and correctness. Replace the direct NULL check with rcu_access_pointer(), which is the appropriate primitive when only checking for NULL without dereferencing the pointer. This function provides the necessary ordering guarantees without requiring RCU read-side protection. Reviewed-by: Michal Kubiak <michal.kubiak@intel.com> Signed-off-by: Breno Leitao <leitao@debian.org> Link: https://patch.msgid.link/20241118-netpoll_rcu-v1-1-a1888dcb4a02@debian.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Menglong Dong
|
85c7975acd |
net: ip: fix unexpected return in fib_validate_source()
The errno should be replaced with drop reasons in fib_validate_source(),
and the "-EINVAL" shouldn't be returned. And this causes a warning, which
is reported by syzkaller:
netlink: 'syz-executor371': attribute type 4 has an invalid length.
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5842 at net/core/skbuff.c:1219 __sk_skb_reason_drop net/core/skbuff.c:1216 [inline]
WARNING: CPU: 0 PID: 5842 at net/core/skbuff.c:1219 sk_skb_reason_drop+0x87/0x380 net/core/skbuff.c:1241
Modules linked in:
CPU: 0 UID: 0 PID: 5842 Comm: syz-executor371 Not tainted 6.12.0-rc6-syzkaller-01362-ga58f00ed24b8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:__sk_skb_reason_drop net/core/skbuff.c:1216 [inline]
RIP: 0010:sk_skb_reason_drop+0x87/0x380 net/core/skbuff.c:1241
Code: 00 00 00 fc ff df 41 8d 9e 00 00 fc ff bf 01 00 fc ff 89 de e8 ea 9f 08 f8 81 fb 00 00 fc ff 77 3a 4c 89 e5 e8 9a 9b 08 f8 90 <0f> 0b 90 eb 5e bf 01 00 00 00 89 ee e8 c8 9f 08 f8 85 ed 0f 8e 49
RSP: 0018:ffffc90003d57078 EFLAGS: 00010293
RAX: ffffffff898c3ec6 RBX: 00000000fffbffea RCX: ffff8880347a5a00
RDX: 0000000000000000 RSI: 00000000fffbffea RDI: 00000000fffc0001
RBP: dffffc0000000000 R08: ffffffff898c3eb6 R09: 1ffff110023eb7d4
R10: dffffc0000000000 R11: ffffed10023eb7d5 R12: dffffc0000000000
R13: ffff888011f5bdc0 R14: 00000000ffffffea R15: 0000000000000000
FS: 000055557d41e380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056519d31d608 CR3: 000000007854e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
kfree_skb_reason include/linux/skbuff.h:1263 [inline]
ip_rcv_finish_core+0xfde/0x1b50 net/ipv4/ip_input.c:424
ip_list_rcv_finish net/ipv4/ip_input.c:610 [inline]
ip_sublist_rcv+0x3b1/0xab0 net/ipv4/ip_input.c:636
ip_list_rcv+0x42b/0x480 net/ipv4/ip_input.c:670
__netif_receive_skb_list_ptype net/core/dev.c:5715 [inline]
__netif_receive_skb_list_core+0x94e/0x980 net/core/dev.c:5762
__netif_receive_skb_list net/core/dev.c:5814 [inline]
netif_receive_skb_list_internal+0xa51/0xe30 net/core/dev.c:5905
netif_receive_skb_list+0x55/0x4b0 net/core/dev.c:5957
xdp_recv_frames net/bpf/test_run.c:280 [inline]
xdp_test_run_batch net/bpf/test_run.c:361 [inline]
bpf_test_run_xdp_live+0x1b5e/0x21b0 net/bpf/test_run.c:390
bpf_prog_test_run_xdp+0x805/0x11e0 net/bpf/test_run.c:1318
bpf_prog_test_run+0x2e4/0x360 kernel/bpf/syscall.c:4266
__sys_bpf+0x48d/0x810 kernel/bpf/syscall.c:5671
__do_sys_bpf kernel/bpf/syscall.c:5760 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5758 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5758
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f18af25a8e9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffee4090af8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f18af25a8e9
RDX: 0000000000000048 RSI: 0000000020000600 RDI: 000000000000000a
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Fix it by returning "-SKB_DROP_REASON_IP_LOCAL_SOURCE" instead of
"-EINVAL" in fib_validate_source().
Reported-by: syzbot+52fbd90f020788ec7709@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/netdev/6738e539.050a0220.e1c64.0002.GAE@google.com/
Fixes:
|
||
|
Kees Cook
|
1cfb5e5788 |
Revert "net: ethtool: Avoid thousands of -Wflex-array-member-not-at-end warnings"
This reverts commit
|
||
|
Geliang Tang
|
1d7fa6ceb9 |
mptcp: pm: avoid code duplication to lookup endp
The helper __lookup_addr() can be used in mptcp_pm_nl_get_local_id() and mptcp_pm_nl_is_backup() to simplify the code, and avoid code duplication. Co-developed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20241115-net-next-mptcp-pm-lockless-dump-v1-2-f4a1bcb4ca2c@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Matthieu Baerts (NGI0)
|
3fbb27b7f8 |
mptcp: pm: lockless list traversal to dump endp
To return an endpoint to the userspace via Netlink, and to dump all of them, the endpoint list was iterated while holding the pernet->lock, but only to read the content of the list. In these cases, the spin locks can be replaced by RCU read ones, and use the _rcu variants to iterate over the entries list in a lockless way. Note that the __lookup_addr_by_id() helper has been modified to use the _rcu variants of list_for_each_entry(), but with an extra conditions, so it can be called either while the RCU read lock is held, or when the associated pernet->lock is held. Reviewed-by: Geliang Tang <geliang@kernel.org> Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org> Link: https://patch.msgid.link/20241115-net-next-mptcp-pm-lockless-dump-v1-1-f4a1bcb4ca2c@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Jakub Kicinski
|
0de6a472c3 |
net/neighbor: clear error in case strict check is not set
Commit
|
||
|
Linus Torvalds
|
5591fd5e03 |
lsm/stable-6.13 PR 20241112
-----BEGIN PGP SIGNATURE----- iQJIBAABCAAyFiEES0KozwfymdVUl37v6iDy2pc3iXMFAmcztFcUHHBhdWxAcGF1 bC1tb29yZS5jb20ACgkQ6iDy2pc3iXPvFQ/+KYwRe3g6gFSu7tRA34okHtUopvpF KGAaic06c8oy85gSX4B2Xk4HINCgXVUuRi9Z+0yExRWvvBXRRdQRUj1Vdbj4KOEG sRsIA1j1YhPU3wyhkAqwpJ97sQE1v9Xb3xizGwTfQKGQkd+cvtHg0QKM08/jPQYq bbbcSxoVsUzh8+idAq1UMfdoTsMh2xeCW7Q1+dbBINJykNzKiqEEc21xgBxeomST lSG9XFP3BJr1RBlb4Ux+J8YL+2G/rDBWZh1sR5+t31kgClSgs3CMBRFdTATvplKk e9vrcUF8wR7xWWnDmmdobHa462qUt6BWifYarX9RTomGBugZfYDOR/C+jpb+xZwd +tZfL6HSOVeBtQ/Zu1bs18eS5i2dj7GxFN7GPY2qXIPvsW5Acwcx1CCK6oNDmX05 1cOaNuZRYBDye4eAnT3yufnJ34VO80UQIfKTE6dqrX0XtCFYomTxb+Km0qM3utl5 ubr3Krp6GmVs65lIvtnIhDKSlcNIBbJfH64vdQNnOn/8FvkovGqp2eaX+0wBhROM 8KgbqntXU4/DgQuDiP01g13mTDeTGdcfyRWKcKMI/CzI/WASPZBpVuqX6xWXh3bs NlZmJ/7+Y48Xp2FvaEchQ/A8ppyIrigMLloZ8yAHf2P1z9g6wBNRCrsScdSQVx63 ArxHLRY44pUOnPs= =m/yY -----END PGP SIGNATURE----- Merge tag 'lsm-pr-20241112' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm Pull lsm updates from Paul Moore: "Thirteen patches, all focused on moving away from the current 'secid' LSM identifier to a richer 'lsm_prop' structure. This move will help reduce the translation that is necessary in many LSMs, offering better performance, and make it easier to support different LSMs in the future" * tag 'lsm-pr-20241112' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm: lsm: remove lsm_prop scaffolding netlabel,smack: use lsm_prop for audit data audit: change context data from secid to lsm_prop lsm: create new security_cred_getlsmprop LSM hook audit: use an lsm_prop in audit_names lsm: use lsm_prop in security_inode_getsecid lsm: use lsm_prop in security_current_getsecid audit: update shutdown LSM data lsm: use lsm_prop in security_ipc_getsecid audit: maintain an lsm_prop in audit_context lsm: add lsmprop_to_secctx hook lsm: use lsm_prop in security_audit_rule_match lsm: add the lsm_prop data structure |
||
|
Ye Bin
|
ce89e742a4 |
svcrdma: fix miss destroy percpu_counter in svc_rdma_proc_init()
There's issue as follows: RPC: Registered rdma transport module. RPC: Registered rdma backchannel transport module. RPC: Unregistered rdma transport module. RPC: Unregistered rdma backchannel transport module. BUG: unable to handle page fault for address: fffffbfff80c609a PGD 123fee067 P4D 123fee067 PUD 123fea067 PMD 10c624067 PTE 0 Oops: Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI RIP: 0010:percpu_counter_destroy_many+0xf7/0x2a0 Call Trace: <TASK> __die+0x1f/0x70 page_fault_oops+0x2cd/0x860 spurious_kernel_fault+0x36/0x450 do_kern_addr_fault+0xca/0x100 exc_page_fault+0x128/0x150 asm_exc_page_fault+0x26/0x30 percpu_counter_destroy_many+0xf7/0x2a0 mmdrop+0x209/0x350 finish_task_switch.isra.0+0x481/0x840 schedule_tail+0xe/0xd0 ret_from_fork+0x23/0x80 ret_from_fork_asm+0x1a/0x30 </TASK> If register_sysctl() return NULL, then svc_rdma_proc_cleanup() will not destroy the percpu counters which init in svc_rdma_proc_init(). If CONFIG_HOTPLUG_CPU is enabled, residual nodes may be in the 'percpu_counters' list. The above issue may occur once the module is removed. If the CONFIG_HOTPLUG_CPU configuration is not enabled, memory leakage occurs. To solve above issue just destroy all percpu counters when register_sysctl() return NULL. Fixes: |
||
|
Yang Erkun
|
2862eee078 |
SUNRPC: make sure cache entry active before cache_show
The function `c_show` was called with protection from RCU. This only ensures that `cp` will not be freed. Therefore, the reference count for `cp` can drop to zero, which will trigger a refcount use-after-free warning when `cache_get` is called. To resolve this issue, use `cache_get_rcu` to ensure that `cp` remains active. ------------[ cut here ]------------ refcount_t: addition on 0; use-after-free. WARNING: CPU: 7 PID: 822 at lib/refcount.c:25 refcount_warn_saturate+0xb1/0x120 CPU: 7 UID: 0 PID: 822 Comm: cat Not tainted 6.12.0-rc3+ #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.1-2.fc37 04/01/2014 RIP: 0010:refcount_warn_saturate+0xb1/0x120 Call Trace: <TASK> c_show+0x2fc/0x380 [sunrpc] seq_read_iter+0x589/0x770 seq_read+0x1e5/0x270 proc_reg_read+0xe1/0x140 vfs_read+0x125/0x530 ksys_read+0xc1/0x160 do_syscall_64+0x5f/0x170 entry_SYSCALL_64_after_hwframe+0x76/0x7e Cc: stable@vger.kernel.org # v4.20+ Signed-off-by: Yang Erkun <yangerkun@huawei.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com> |
||
|
Linus Torvalds
|
0f25f0e4ef |
the bulk of struct fd memory safety stuff
Making sure that struct fd instances are destroyed in the same
scope where they'd been created, getting rid of reassignments
and passing them by reference, converting to CLASS(fd{,_pos,_raw}).
We are getting very close to having the memory safety of that stuff
trivial to verify.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
-----BEGIN PGP SIGNATURE-----
iHUEABYIAB0WIQQqUNBr3gm4hGXdBJlZ7Krx/gZQ6wUCZzdikAAKCRBZ7Krx/gZQ
69nJAQCmbQHK3TGUbQhOw6MJXOK9ezpyEDN3FZb4jsu38vTIdgEA6OxAYDO2m2g9
CN18glYmD3wRyU6Bwl4vGODouSJvDgA=
=gVH3
-----END PGP SIGNATURE-----
Merge tag 'pull-fd' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull 'struct fd' class updates from Al Viro:
"The bulk of struct fd memory safety stuff
Making sure that struct fd instances are destroyed in the same scope
where they'd been created, getting rid of reassignments and passing
them by reference, converting to CLASS(fd{,_pos,_raw}).
We are getting very close to having the memory safety of that stuff
trivial to verify"
* tag 'pull-fd' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (28 commits)
deal with the last remaing boolean uses of fd_file()
css_set_fork(): switch to CLASS(fd_raw, ...)
memcg_write_event_control(): switch to CLASS(fd)
assorted variants of irqfd setup: convert to CLASS(fd)
do_pollfd(): convert to CLASS(fd)
convert do_select()
convert vfs_dedupe_file_range().
convert cifs_ioctl_copychunk()
convert media_request_get_by_fd()
convert spu_run(2)
switch spufs_calls_{get,put}() to CLASS() use
convert cachestat(2)
convert do_preadv()/do_pwritev()
fdget(), more trivial conversions
fdget(), trivial conversions
privcmd_ioeventfd_assign(): don't open-code eventfd_ctx_fdget()
o2hb_region_dev_store(): avoid goto around fdget()/fdput()
introduce "fd_pos" class, convert fdget_pos() users to it.
fdget_raw() users: switch to CLASS(fd_raw)
convert vmsplice() to CLASS(fd)
...
|
||
|
Linus Torvalds
|
4c797b11a8 |
vfs-6.13.file
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCZzcW4gAKCRCRxhvAZXjc
okF+AP9xTMb2SlnRPBOBd9yFcmVXmQi86TSCUPAEVb+wIldGYwD/RIOdvXYJlp9v
RgJkU1DC3ddkXtONNDY6gFaP+siIWA0=
=gMc7
-----END PGP SIGNATURE-----
Merge tag 'vfs-6.13.file' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs file updates from Christian Brauner:
"This contains changes the changes for files for this cycle:
- Introduce a new reference counting mechanism for files.
As atomic_inc_not_zero() is implemented with a try_cmpxchg() loop
it has O(N^2) behaviour under contention with N concurrent
operations and it is in a hot path in __fget_files_rcu().
The rcuref infrastructures remedies this problem by using an
unconditional increment relying on safe- and dead zones to make
this work and requiring rcu protection for the data structure in
question. This not just scales better it also introduces overflow
protection.
However, in contrast to generic rcuref, files require a memory
barrier and thus cannot rely on *_relaxed() atomic operations and
also require to be built on atomic_long_t as having massive amounts
of reference isn't unheard of even if it is just an attack.
This adds a file specific variant instead of making this a generic
library.
This has been tested by various people and it gives consistent
improvement up to 3-5% on workloads with loads of threads.
- Add a fastpath for find_next_zero_bit(). Skip 2-levels searching
via find_next_zero_bit() when there is a free slot in the word that
contains the next fd. This improves pts/blogbench-1.1.0 read by 8%
and write by 4% on Intel ICX 160.
- Conditionally clear full_fds_bits since it's very likely that a bit
in full_fds_bits has been cleared during __clear_open_fds(). This
improves pts/blogbench-1.1.0 read up to 13%, and write up to 5% on
Intel ICX 160.
- Get rid of all lookup_*_fdget_rcu() variants. They were used to
lookup files without taking a reference count. That became invalid
once files were switched to SLAB_TYPESAFE_BY_RCU and now we're
always taking a reference count. Switch to an already existing
helper and remove the legacy variants.
- Remove pointless includes of <linux/fdtable.h>.
- Avoid cmpxchg() in close_files() as nobody else has a reference to
the files_struct at that point.
- Move close_range() into fs/file.c and fold __close_range() into it.
- Cleanup calling conventions of alloc_fdtable() and expand_files().
- Merge __{set,clear}_close_on_exec() into one.
- Make __set_open_fd() set cloexec as well instead of doing it in two
separate steps"
* tag 'vfs-6.13.file' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
selftests: add file SLAB_TYPESAFE_BY_RCU recycling stressor
fs: port files to file_ref
fs: add file_ref
expand_files(): simplify calling conventions
make __set_open_fd() set cloexec state as well
fs: protect backing files with rcu
file.c: merge __{set,clear}_close_on_exec()
alloc_fdtable(): change calling conventions.
fs/file.c: add fast path in find_next_fd()
fs/file.c: conditionally clear full_fds
fs/file.c: remove sanity_check and add likely/unlikely in alloc_fd()
move close_range(2) into fs/file.c, fold __close_range() into it
close_files(): don't bother with xchg()
remove pointless includes of <linux/fdtable.h>
get rid of ...lookup...fdget_rcu() family
|
||
|
Dr. David Alan Gilbert
|
3e0f59f09e |
libceph: Remove unused ceph_crypto_key_encode
ceph_crypto_key_encode() was added in 2010's commit
|
||
|
Dr. David Alan Gilbert
|
32844fd72b |
libceph: Remove unused ceph_osdc_watch_check
ceph_osdc_watch_check() has been unused since it was added in commit
|
||
|
Dr. David Alan Gilbert
|
ee1eb8ccaa |
libceph: Remove unused pagevec functions
ceph_copy_user_to_page_vector() has been unused since 2013's commit |
||
|
Dr. David Alan Gilbert
|
03854920c3 |
libceph: Remove unused ceph_pagelist functions
ceph_pagelist_truncate() and ceph_pagelist_set_cursor() have been unused
since commit
|