Only RX side for now and small message to test the setup.
In the future, we can extend it to TX side and to testing
both sides with a couple of megs of data.
make \
-C tools/testing/selftests \
TARGETS="drivers/hw/net" \
install INSTALL_PATH=~/tmp/ksft
scp ~/tmp/ksft ${HOST}:
scp ~/tmp/ksft ${PEER}:
cfg+="NETIF=${DEV}\n"
cfg+="LOCAL_V6=${HOST_IP}\n"
cfg+="REMOTE_V6=${PEER_IP}\n"
cfg+="REMOTE_TYPE=ssh\n"
cfg+="REMOTE_ARGS=root@${PEER}\n"
echo -e "$cfg" | ssh root@${HOST} "cat > ksft/drivers/net/net.config"
ssh root@${HOST} "cd ksft && ./run_kselftest.sh -t drivers/net:devmem.py"
Reviewed-by: Mina Almasry <almasrymina@google.com>
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Reviewed-by: Joe Damato <jdamato@fastly.com>
Link: https://patch.msgid.link/20241107181211.3934153-13-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This is where all the tests that depend on the HW functionality live in
and this is where the automated test is gonna be added in the next
patch.
Reviewed-by: Mina Almasry <almasrymina@google.com>
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20241107181211.3934153-12-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This will be used as a 'probe' mode in the selftest to check whether
the device supports the devmem or not. Use hard-coded queue layout
(two last queues) and prevent user from passing custom -q and/or -t.
Reviewed-by: Mina Almasry <almasrymina@google.com>
Reviewed-by: Joe Damato <jdamato@fastly.com>
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20241107181211.3934153-11-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Use single last queue of the device and probe it dynamically.
Reviewed-by: Mina Almasry <almasrymina@google.com>
Reviewed-by: Joe Damato <jdamato@fastly.com>
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20241107181211.3934153-10-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In the next patch the hard-coded queue numbers are gonna be removed.
So introduce some initial support for ethtool YNL and use
it to enable header split.
Also, tcp-data-split requires latest ethtool which is unlikely
to be present in the distros right now.
(ideally, we should not shell out to ethtool at all).
Reviewed-by: Mina Almasry <almasrymina@google.com>
Reviewed-by: Joe Damato <jdamato@fastly.com>
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20241107181211.3934153-9-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
ntuple off/on might be not enough to do it on all NICs.
Add a bunch of shell crap to explicitly remove the rules.
Reviewed-by: Mina Almasry <almasrymina@google.com>
Reviewed-by: Joe Damato <jdamato@fastly.com>
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20241107181211.3934153-8-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Use dualstack socket to support both v4 and v6. v4-mapped-v6 address
can be used to do v4.
Reviewed-by: Mina Almasry <almasrymina@google.com>
Reviewed-by: Joe Damato <jdamato@fastly.com>
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20241107181211.3934153-7-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
To make it clear what's required and what's not. Also, some of the
values don't seem like a good defaults; for example eth1.
Move the invocation comment to the top, add missing -s to the client
and cleanup the client invocation a bit to make more readable.
Reviewed-by: Mina Almasry <almasrymina@google.com>
Reviewed-by: Joe Damato <jdamato@fastly.com>
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20241107181211.3934153-6-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Support 3-tuple filtering by making client_ip optional. When -c is
not passed, don't specify src-ip/src-port in the filter.
Reviewed-by: Mina Almasry <almasrymina@google.com>
Reviewed-by: Joe Damato <jdamato@fastly.com>
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20241107181211.3934153-5-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
There is a bunch of places where error() calls look out of place.
Use the same error(1, errno, ...) pattern everywhere.
Reviewed-by: Mina Almasry <almasrymina@google.com>
Reviewed-by: Joe Damato <jdamato@fastly.com>
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20241107181211.3934153-4-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
So we can plug the other ones in the future if needed.
Reviewed-by: Mina Almasry <almasrymina@google.com>
Reviewed-by: Joe Damato <jdamato@fastly.com>
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20241107181211.3934153-3-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
That should make it possible to do expected payload validation on
the caller side.
Reviewed-by: Mina Almasry <almasrymina@google.com>
Reviewed-by: Joe Damato <jdamato@fastly.com>
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20241107181211.3934153-2-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add test for VLAN ping for HSR. The test adds vlan interfaces to the hsr
interface and then verifies if ping to them works.
Signed-off-by: MD Danish Anwar <danishanwar@ti.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Link: https://patch.msgid.link/20241106091710.3308519-5-danishanwar@ti.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Soft lockups have been observed on a cluster of Linux-based edge routers
located in a highly dynamic environment. Using the `bird` service, these
routers continuously update BGP-advertised routes due to frequently
changing nexthop destinations, while also managing significant IPv6
traffic. The lockups occur during the traversal of the multipath
circular linked-list in the `fib6_select_path` function, particularly
while iterating through the siblings in the list. The issue typically
arises when the nodes of the linked list are unexpectedly deleted
concurrently on a different core—indicated by their 'next' and
'previous' elements pointing back to the node itself and their reference
count dropping to zero. This results in an infinite loop, leading to a
soft lockup that triggers a system panic via the watchdog timer.
Apply RCU primitives in the problematic code sections to resolve the
issue. Where necessary, update the references to fib6_siblings to
annotate or use the RCU APIs.
Include a test script that reproduces the issue. The script
periodically updates the routing table while generating a heavy load
of outgoing IPv6 traffic through multiple iperf3 clients. It
consistently induces infinite soft lockups within a couple of minutes.
Kernel log:
0 [ffffbd13003e8d30] machine_kexec at ffffffff8ceaf3eb
1 [ffffbd13003e8d90] __crash_kexec at ffffffff8d0120e3
2 [ffffbd13003e8e58] panic at ffffffff8cef65d4
3 [ffffbd13003e8ed8] watchdog_timer_fn at ffffffff8d05cb03
4 [ffffbd13003e8f08] __hrtimer_run_queues at ffffffff8cfec62f
5 [ffffbd13003e8f70] hrtimer_interrupt at ffffffff8cfed756
6 [ffffbd13003e8fd0] __sysvec_apic_timer_interrupt at ffffffff8cea01af
7 [ffffbd13003e8ff0] sysvec_apic_timer_interrupt at ffffffff8df1b83d
-- <IRQ stack> --
8 [ffffbd13003d3708] asm_sysvec_apic_timer_interrupt at ffffffff8e000ecb
[exception RIP: fib6_select_path+299]
RIP: ffffffff8ddafe7b RSP: ffffbd13003d37b8 RFLAGS: 00000287
RAX: ffff975850b43600 RBX: ffff975850b40200 RCX: 0000000000000000
RDX: 000000003fffffff RSI: 0000000051d383e4 RDI: ffff975850b43618
RBP: ffffbd13003d3800 R8: 0000000000000000 R9: ffff975850b40200
R10: 0000000000000000 R11: 0000000000000000 R12: ffffbd13003d3830
R13: ffff975850b436a8 R14: ffff975850b43600 R15: 0000000000000007
ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018
9 [ffffbd13003d3808] ip6_pol_route at ffffffff8ddb030c
10 [ffffbd13003d3888] ip6_pol_route_input at ffffffff8ddb068c
11 [ffffbd13003d3898] fib6_rule_lookup at ffffffff8ddf02b5
12 [ffffbd13003d3928] ip6_route_input at ffffffff8ddb0f47
13 [ffffbd13003d3a18] ip6_rcv_finish_core.constprop.0 at ffffffff8dd950d0
14 [ffffbd13003d3a30] ip6_list_rcv_finish.constprop.0 at ffffffff8dd96274
15 [ffffbd13003d3a98] ip6_sublist_rcv at ffffffff8dd96474
16 [ffffbd13003d3af8] ipv6_list_rcv at ffffffff8dd96615
17 [ffffbd13003d3b60] __netif_receive_skb_list_core at ffffffff8dc16fec
18 [ffffbd13003d3be0] netif_receive_skb_list_internal at ffffffff8dc176b3
19 [ffffbd13003d3c50] napi_gro_receive at ffffffff8dc565b9
20 [ffffbd13003d3c80] ice_receive_skb at ffffffffc087e4f5 [ice]
21 [ffffbd13003d3c90] ice_clean_rx_irq at ffffffffc0881b80 [ice]
22 [ffffbd13003d3d20] ice_napi_poll at ffffffffc088232f [ice]
23 [ffffbd13003d3d80] __napi_poll at ffffffff8dc18000
24 [ffffbd13003d3db8] net_rx_action at ffffffff8dc18581
25 [ffffbd13003d3e40] __do_softirq at ffffffff8df352e9
26 [ffffbd13003d3eb0] run_ksoftirqd at ffffffff8ceffe47
27 [ffffbd13003d3ec0] smpboot_thread_fn at ffffffff8cf36a30
28 [ffffbd13003d3ee8] kthread at ffffffff8cf2b39f
29 [ffffbd13003d3f28] ret_from_fork at ffffffff8ce5fa64
30 [ffffbd13003d3f50] ret_from_fork_asm at ffffffff8ce03cbb
Fixes: 66f5d6ce53 ("ipv6: replace rwlock with rcu and spinlock in fib6_table")
Reported-by: Adrian Oliver <kernel@aoliver.ca>
Signed-off-by: Omid Ehtemam-Haghighi <omid.ehtemamhaghighi@menlosecurity.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Ido Schimmel <idosch@idosch.org>
Cc: Kuniyuki Iwashima <kuniyu@amazon.com>
Cc: Simon Horman <horms@kernel.org>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://patch.msgid.link/20241106010236.1239299-1-omid.ehtemamhaghighi@menlosecurity.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The test verifies that available features aren't changed by toggling
offload on the device. Creating a device with offload off and then
enabling it later should result in the same features as creating the
device with offload enabled directly.
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/ba801bd0a75b02de2dddbfc77f9efceb8b3d8a2e.1730929545.git.sd@queasysnail.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Use appropriate frag_page API instead of caller accessing
'page_frag_cache' directly.
CC: Andrew Morton <akpm@linux-foundation.org>
CC: Linux-MM <linux-mm@kvack.org>
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Acked-by: Chuck Lever <chuck.lever@oracle.com>
Link: https://patch.msgid.link/20241028115343.3405838-5-linyunsheng@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The testing is done by ensuring that the fragment allocated
from a frag_frag_cache instance is pushed into a ptr_ring
instance in a kthread binded to a specified cpu, and a kthread
binded to a specified cpu will pop the fragment from the
ptr_ring and free the fragment.
CC: Andrew Morton <akpm@linux-foundation.org>
CC: Linux-MM <linux-mm@kvack.org>
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Link: https://patch.msgid.link/20241028115343.3405838-2-linyunsheng@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
It is currently impossible to delete individual FDB entries (as opposed
to flushing) that were added with a VLAN that no longer exists:
# ip link add name dummy1 up type dummy
# ip link add name br1 up type bridge vlan_filtering 1
# ip link set dev dummy1 master br1
# bridge fdb add 00:11:22:33:44:55 dev dummy1 master static vlan 1
# bridge vlan del vid 1 dev dummy1
# bridge fdb get 00:11:22:33:44:55 br br1 vlan 1
00:11:22:33:44:55 dev dummy1 vlan 1 master br1 static
# bridge fdb del 00:11:22:33:44:55 dev dummy1 master vlan 1
RTNETLINK answers: Invalid argument
# bridge fdb get 00:11:22:33:44:55 br br1 vlan 1
00:11:22:33:44:55 dev dummy1 vlan 1 master br1 static
This is in contrast to MDB entries that can be deleted after the VLAN
was deleted:
# bridge vlan add vid 10 dev dummy1
# bridge mdb add dev br1 port dummy1 grp 239.1.1.1 permanent vid 10
# bridge vlan del vid 10 dev dummy1
# bridge mdb get dev br1 grp 239.1.1.1 vid 10
dev br1 port dummy1 grp 239.1.1.1 permanent vid 10
# bridge mdb del dev br1 port dummy1 grp 239.1.1.1 permanent vid 10
# bridge mdb get dev br1 grp 239.1.1.1 vid 10
Error: bridge: MDB entry not found.
Align the two interfaces and allow user space to delete FDB entries that
were added with a VLAN that no longer exists:
# ip link add name dummy1 up type dummy
# ip link add name br1 up type bridge vlan_filtering 1
# ip link set dev dummy1 master br1
# bridge fdb add 00:11:22:33:44:55 dev dummy1 master static vlan 1
# bridge vlan del vid 1 dev dummy1
# bridge fdb get 00:11:22:33:44:55 br br1 vlan 1
00:11:22:33:44:55 dev dummy1 vlan 1 master br1 static
# bridge fdb del 00:11:22:33:44:55 dev dummy1 master vlan 1
# bridge fdb get 00:11:22:33:44:55 br br1 vlan 1
Error: Fdb entry not found.
Add a selftest to make sure this behavior does not regress:
# ./rtnetlink.sh -t kci_test_fdb_del
PASS: bridge fdb del
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Andy Roulin <aroulin@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/20241105133954.350479-1-idosch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
A recent refactor transformed the check for process completion
in a true statement, due to a typo.
As a result, the relevant test-case is unable to catch the
regression it was supposed to detect.
Restore the correct condition.
Fixes: 691bb4e49c ("selftests: net: avoid just another constant wait")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://patch.msgid.link/0e6f213811f8e93a235307e683af8225cc6277ae.1730828007.git.pabeni@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The commit 78ff640819 ("vfs: Convert tracefs to use the new mount API")
broke the gid setting when set by fstab or other mount utility.
It is ignored when it is set. Fix the code so that it recognises the
option again and will honor the settings on mount at boot up.
Update the internal documentation and create a selftest to make sure
it doesn't break again in the future.
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Merge tag 'tracefs-v6.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracefs fixes from Steven Rostedt:
"Fix tracefs mount options.
Commit 78ff640819 ("vfs: Convert tracefs to use the new mount API")
broke the gid setting when set by fstab or other mount utility. It is
ignored when it is set. Fix the code so that it recognises the option
again and will honor the settings on mount at boot up.
Update the internal documentation and create a selftest to make sure
it doesn't break again in the future"
* tag 'tracefs-v6.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing/selftests: Add tracefs mount options test
tracing: Document tracefs gid mount option
tracing: Fix tracefs mount options
Updated to a more recent socat release and saw this:
socat E xioopen_ipdgram_listen(): unknown address family 0
socat W address is opened in read-write mode but only supports read-only
First error is avoided via pf=ipv4 option, second one via -u
(unidirectional) mode.
Signed-off-by: Florian Westphal <fw@strlen.de>
Link: https://patch.msgid.link/20241104142821.2608-1-fw@strlen.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This test will fail if the initial namespace has conntrack
active due to unexpected number of flows returned on dump:
conntrack_dump_flush.c:451:test_flush_by_zone:Expected ret (7) == 2 (2)
test_flush_by_zone: Test failed
FAIL conntrack_dump_flush.test_flush_by_zone
not ok 2 conntrack_dump_flush.test_flush_by_zone
Add a wrapper that unshares this program to avoid this problem.
Signed-off-by: Florian Westphal <fw@strlen.de>
Link: https://patch.msgid.link/20241104142529.2352-1-fw@strlen.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Recently, the net/lib.sh file has been modified to include defer.sh from
net/lib/sh/ directory. The Makefile from net/lib has been modified
accordingly, but not the ones from the sub-targets using net/lib.sh.
Because of that, the new file is not installed as expected when
installing the Forwarding, MPTCP, and Netfilter targets, e.g.
# make -C tools/testing/selftests TARGETS=net/mptcp install \
INSTALL_PATH=/tmp/kself
# cd /tmp/kself/
# ./run_kselftest.sh -c net/mptcp
TAP version 13
1..7
# timeout set to 1800
# selftests: net/mptcp: mptcp_connect.sh
# ./../lib.sh: line 5: /tmp/kself/net/lib/sh/defer.sh: No such file
or directory
# (...)
This can be fixed simply by adding all the .sh files from net/lib/sh
directory to the TEST_INCLUDES variable in the different Makefile's.
Fixes: a6e263f125 ("selftests: net: lib: Introduce deferred commands")
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Link: https://patch.msgid.link/20241104-net-next-selftests-lib-sh-deps-v1-1-7c9f7d939fc2@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Sometimes the names of the enum entries are self-explanatory
or come from standards. Forcing authors to write trivial kdoc
for each of such entries seems unreasonable, but kdoc would
complain about undocumented entries.
Detect enums which only have documentation for the entire
type and no documentation for entries. Render their doc
as a plain comment.
Link: https://patch.msgid.link/20241103165314.1631237-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add 3 tests to check for the expected behaviour of
qdisc_tree_reduce_backlog in special scenarios.
- The first test checks if the qdisc class is notified of deletion for
major handle 'ffff:'.
- The second test checks the same as the first test but with 'ffff:' as the root
qdisc.
- The third test checks if everything works if ingress is active.
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Acked-by: Cong Wang <cong.wang@bytedance.com>
Link: https://patch.msgid.link/20241101143148.1218890-1-pctammela@mojatatu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Daniel Borkmann says:
====================
pull-request: bpf-next 2024-10-31
We've added 13 non-merge commits during the last 16 day(s) which contain
a total of 16 files changed, 710 insertions(+), 668 deletions(-).
The main changes are:
1) Optimize and homogenize bpf_csum_diff helper for all archs and also
add a batch of new BPF selftests for it, from Puranjay Mohan.
2) Rewrite and migrate the test_tcp_check_syncookie.sh BPF selftest
into test_progs so that it can be run in BPF CI, from Alexis Lothoré.
3) Two BPF sockmap selftest fixes, from Zijian Zhang.
4) Small XDP synproxy BPF selftest cleanup to remove IP_DF check,
from Vincent Li.
* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next:
selftests/bpf: Add a selftest for bpf_csum_diff()
selftests/bpf: Don't mask result of bpf_csum_diff() in test_verifier
bpf: bpf_csum_diff: Optimize and homogenize for all archs
net: checksum: Move from32to16() to generic header
selftests/bpf: remove xdp_synproxy IP_DF check
selftests/bpf: remove test_tcp_check_syncookie
selftests/bpf: test MSS value returned with bpf_tcp_gen_syncookie
selftests/bpf: add ipv4 and dual ipv4/ipv6 support in btf_skc_cls_ingress
selftests/bpf: get rid of global vars in btf_skc_cls_ingress
selftests/bpf: add missing ns cleanups in btf_skc_cls_ingress
selftests/bpf: factorize conn and syncookies tests in a single runner
selftests/bpf: Fix txmsg_redir of test_txmsg_pull in test_sockmap
selftests/bpf: Fix msg_verify_data in test_sockmap
====================
Link: https://patch.msgid.link/20241031221543.108853-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The usual collection of singletons - please see the changelogs.
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Merge tag 'mm-hotfixes-stable-2024-11-03-10-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc fixes from Andrew Morton:
"17 hotfixes. 9 are cc:stable. 13 are MM and 4 are non-MM.
The usual collection of singletons - please see the changelogs"
* tag 'mm-hotfixes-stable-2024-11-03-10-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
mm: multi-gen LRU: use {ptep,pmdp}_clear_young_notify()
mm: multi-gen LRU: remove MM_LEAF_OLD and MM_NONLEAF_TOTAL stats
mm, mmap: limit THP alignment of anonymous mappings to PMD-aligned sizes
mm: shrinker: avoid memleak in alloc_shrinker_info
.mailmap: update e-mail address for Eugen Hristev
vmscan,migrate: fix page count imbalance on node stats when demoting pages
mailmap: update Jarkko's email addresses
mm: allow set/clear page_type again
nilfs2: fix potential deadlock with newly created symlinks
Squashfs: fix variable overflow in squashfs_readpage_block
kasan: remove vmalloc_percpu test
tools/mm: -Werror fixes in page-types/slabinfo
mm, swap: avoid over reclaim of full clusters
mm: fix PSWPIN counter for large folios swap-in
mm: avoid VM_BUG_ON when try to map an anon large folio to zero page.
mm/codetag: fix null pointer check logic for ref and tag
mm/gup: stop leaking pinned pages in low memory conditions
Extend netcons_basic selftest to verify the userdata functionality by:
1. Creating a test key in the userdata configfs directory
2. Writing a known value to the key
3. Validating the key-value pair appears in the captured network output
This ensures the userdata feature is properly tested during selftests.
Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://patch.msgid.link/20241029090030.1793551-3-leitao@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Here are some small USB and Thunderbolt driver fixes for 6.12-rc6 that
have been sitting in my tree this week. Included in here are the
following:
- thunderbolt driver fixes for reported issues
- USB typec driver fixes
- xhci driver fixes for reported problems
- dwc2 driver revert for a broken change
- usb phy driver fix
- usbip tool fix
All of these have been in linux-next this week with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB / Thunderbolt fixes from Greg KH:
"Here are some small USB and Thunderbolt driver fixes for 6.12-rc6 that
have been sitting in my tree this week. Included in here are the
following:
- thunderbolt driver fixes for reported issues
- USB typec driver fixes
- xhci driver fixes for reported problems
- dwc2 driver revert for a broken change
- usb phy driver fix
- usbip tool fix
All of these have been in linux-next this week with no reported
issues"
* tag 'usb-6.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: typec: tcpm: restrict SNK_WAIT_CAPABILITIES_TIMEOUT transitions to non self-powered devices
usb: phy: Fix API devm_usb_put_phy() can not release the phy
usb: typec: use cleanup facility for 'altmodes_node'
usb: typec: fix unreleased fwnode_handle in typec_port_register_altmodes()
usb: typec: qcom-pmic-typec: fix missing fwnode removal in error path
usb: typec: qcom-pmic-typec: use fwnode_handle_put() to release fwnodes
usb: acpi: fix boot hang due to early incorrect 'tunneled' USB3 device links
Revert "usb: dwc2: Skip clock gating on Broadcom SoCs"
xhci: Fix Link TRB DMA in command ring stopped completion event
xhci: Use pm_runtime_get to prevent RPM on unsupported systems
usbip: tools: Fix detach_port() invalid port error path
thunderbolt: Honor TMU requirements in the domain when setting TMU mode
thunderbolt: Fix KASAN reported stack out-of-bounds read in tb_retimer_scan()
Kselftest fixes for Linux 6.12-rc6
- fix syntax error in frequency calculation arithmetic expression in
intel_pstate run.sh
- add missing cpupower dependency check intel_pstate run.sh
- fix idmap_mount_tree_invalid test failure due to incorrect argument
- fix watchdog-test run leaving the watchdog timer enabled causing
system reboot. With this fix, the test disables the watchdog timer
when it gets terminated with SIGTERM, SIGKILL, and SIGQUIT in addition
to SIGINT
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Merge tag 'linux_kselftest-fixes-6.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull Kselftest fixes from Shuah Khan:
- fix syntax error in frequency calculation arithmetic expression in
intel_pstate run.sh
- add missing cpupower dependency check intel_pstate run.sh
- fix idmap_mount_tree_invalid test failure due to incorrect argument
- fix watchdog-test run leaving the watchdog timer enabled causing
system reboot. With this fix, the test disables the watchdog timer
when it gets terminated with SIGTERM, SIGKILL, and SIGQUIT in
addition to SIGINT
* tag 'linux_kselftest-fixes-6.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
selftests/watchdog-test: Fix system accidentally reset after watchdog-test
selftests/intel_pstate: check if cpupower is installed
selftests/intel_pstate: fix operand expected error
selftests/mount_setattr: fix idmap_mount_tree_invalid failed to run
- Fix crashes when running with cxl-test code
- Fix Trace DRAM Event Record field decodes
- Fix module/built in initialization order errors
- Fix use after free on decoder shutdowns
- Fix out of order decoder allocations
- Improve cxl-test to better reflect real world systems
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Merge tag 'cxl-fixes-6.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
Pull cxl fixes from Ira Weiny:
"The bulk of these fixes center around an initialization order bug
reported by Gregory Price and some additional fall out from the
debugging effort.
In summary, cxl_acpi and cxl_mem race and previously worked because of
a bus_rescan_devices() while testing without modules built in.
Unfortunately with modules built in the rescan would fail due to the
cxl_port driver being registered late via the build order. Furthermore
it was found bus_rescan_devices() did not guarantee a probe barrier
which CXL was expecting. Additional fixes to cxl-test and decoder
allocation came along as they were found in this debugging effort.
The other fixes are pretty minor but one affects trace point data seen
by user space.
Summary:
- Fix crashes when running with cxl-test code
- Fix Trace DRAM Event Record field decodes
- Fix module/built in initialization order errors
- Fix use after free on decoder shutdowns
- Fix out of order decoder allocations
- Improve cxl-test to better reflect real world systems"
* tag 'cxl-fixes-6.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl:
cxl/test: Improve init-order fidelity relative to real-world systems
cxl/port: Prevent out-of-order decoder allocation
cxl/port: Fix use-after-free, permit out-of-order decoder shutdown
cxl/acpi: Ensure ports ready at cxl_acpi_probe() return
cxl/port: Fix cxl_bus_rescan() vs bus_rescan_devices()
cxl/port: Fix CXL port initialization order when the subsystem is built-in
cxl/events: Fix Trace DRAM Event Record
cxl/core: Return error when cxl_endpoint_gather_bandwidth() handles a non-PCI device
Add a selftest to check that the tracefs gid mount option is applied
correctly.
./ftracetest test.d/00basic/mount_options.tc
Use the new readme string "[gid=<gid>] as a requirement and also update
test_ownership.tc requirements to use this.
Cc: Eric Sandeen <sandeen@redhat.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Ali Zahraee <ahzahraee@gmail.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Link: https://lore.kernel.org/20241030171928.4168869-4-kaleshsingh@google.com
Signed-off-by: Kalesh Singh <kaleshsingh@google.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
```
readonly STATS="$(mktemp -p /tmp ns-XXXXXX)"
readonly BASE=`basename $STATS`
```
It could be a mistake to write to $BASE rather than $STATS, where $STATS
is used to save the NSTAT_HISTORY and it will be cleaned up before exit.
Although since we've been creating the wrong file this whole time and
everything worked, it's fine to remove these 2 lines completely
Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
Link: https://patch.msgid.link/20241030005943.400225-1-lizhijian@fujitsu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Similarly to NLA_POLICY_MIN_LEN, NLA_POLICY_MAX_LEN defines a policy
with a maximum length value.
The netlink generator for YAML specs has been extended accordingly.
Signed-off-by: Antonio Quartulli <antonio@openvpn.net>
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Link: https://patch.msgid.link/20241029-b4-ovpn-v11-1-de4698c73a25@openvpn.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
- Fix BPF verifier to force a checkpoint when the program's jump
history becomes too long (Eduard Zingerman)
- Add several fixes to the BPF bits iterator addressing issues
like memory leaks and overflow problems (Hou Tao)
- Fix an out-of-bounds write in trie_get_next_key (Byeonguk Jeong)
- Fix BPF test infra's LIVE_FRAME frame update after a page has
been recycled (Toke Høiland-Jørgensen)
- Fix BPF verifier and undo the 40-bytes extra stack space for
bpf_fastcall patterns due to various bugs (Eduard Zingerman)
- Fix a BPF sockmap race condition which could trigger a NULL
pointer dereference in sock_map_link_update_prog (Cong Wang)
- Fix tcp_bpf_recvmsg_parser to retrieve seq_copied from tcp_sk
under the socket lock (Jiayuan Chen)
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Pull bpf fixes from Daniel Borkmann:
- Fix BPF verifier to force a checkpoint when the program's jump
history becomes too long (Eduard Zingerman)
- Add several fixes to the BPF bits iterator addressing issues like
memory leaks and overflow problems (Hou Tao)
- Fix an out-of-bounds write in trie_get_next_key (Byeonguk Jeong)
- Fix BPF test infra's LIVE_FRAME frame update after a page has been
recycled (Toke Høiland-Jørgensen)
- Fix BPF verifier and undo the 40-bytes extra stack space for
bpf_fastcall patterns due to various bugs (Eduard Zingerman)
- Fix a BPF sockmap race condition which could trigger a NULL pointer
dereference in sock_map_link_update_prog (Cong Wang)
- Fix tcp_bpf_recvmsg_parser to retrieve seq_copied from tcp_sk under
the socket lock (Jiayuan Chen)
* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
bpf, test_run: Fix LIVE_FRAME frame update after a page has been recycled
selftests/bpf: Add three test cases for bits_iter
bpf: Use __u64 to save the bits in bits iterator
bpf: Check the validity of nr_words in bpf_iter_bits_new()
bpf: Add bpf_mem_alloc_check_size() helper
bpf: Free dynamically allocated bits in bpf_iter_bits_destroy()
bpf: disallow 40-bytes extra stack for bpf_fastcall patterns
selftests/bpf: Add test for trie_get_next_key()
bpf: Fix out-of-bounds write in trie_get_next_key()
selftests/bpf: Test with a very short loop
bpf: Force checkpoint when jmp history is too long
bpf: fix filed access without lock
sock_map: fix a NULL pointer dereference in sock_map_link_update_prog()
No known new regressions outstanding.
Current release - regressions:
- wifi: mt76: do not increase mcu skb refcount if retry is not supported
Current release - new code bugs:
- wifi:
- rtw88: fix the RX aggregation in USB 3 mode
- mac80211: fix memory corruption bug in struct ieee80211_chanctx
Previous releases - regressions:
- sched:
- stop qdisc_tree_reduce_backlog on TC_H_ROOT
- sch_api: fix xa_insert() error path in tcf_block_get_ext()
- wifi:
- revert "wifi: iwlwifi: remove retry loops in start"
- cfg80211: clear wdev->cqm_config pointer on free
- netfilter: fix potential crash in nf_send_reset6()
- ip_tunnel: fix suspicious RCU usage warning in ip_tunnel_find()
- bluetooth: fix null-ptr-deref in hci_read_supported_codecs
- eth: mlxsw: add missing verification before pushing Tx header
- eth: hns3: fixed hclge_fetch_pf_reg accesses bar space out of bounds issue
Previous releases - always broken:
- wifi: mac80211: do not pass a stopped vif to the driver in .get_txpower
- netfilter: sanitize offset and length before calling skb_checksum()
- core:
- fix crash when config small gso_max_size/gso_ipv4_max_size
- skip offload for NETIF_F_IPV6_CSUM if ipv6 header contains extension
- mptcp: protect sched with rcu_read_lock
- eth: ice: fix crash on probe for DPLL enabled E810 LOM
- eth: macsec: fix use-after-free while sending the offloading packet
- eth: stmmac: fix unbalanced DMA map/unmap for non-paged SKB data
- eth: hns3: fix kernel crash when 1588 is sent on HIP08 devices
- eth: mtk_wed: fix path of MT7988 WO firmware
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-6.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from WiFi, bluetooth and netfilter.
No known new regressions outstanding.
Current release - regressions:
- wifi: mt76: do not increase mcu skb refcount if retry is not
supported
Current release - new code bugs:
- wifi:
- rtw88: fix the RX aggregation in USB 3 mode
- mac80211: fix memory corruption bug in struct ieee80211_chanctx
Previous releases - regressions:
- sched:
- stop qdisc_tree_reduce_backlog on TC_H_ROOT
- sch_api: fix xa_insert() error path in tcf_block_get_ext()
- wifi:
- revert "wifi: iwlwifi: remove retry loops in start"
- cfg80211: clear wdev->cqm_config pointer on free
- netfilter: fix potential crash in nf_send_reset6()
- ip_tunnel: fix suspicious RCU usage warning in ip_tunnel_find()
- bluetooth: fix null-ptr-deref in hci_read_supported_codecs
- eth: mlxsw: add missing verification before pushing Tx header
- eth: hns3: fixed hclge_fetch_pf_reg accesses bar space out of
bounds issue
Previous releases - always broken:
- wifi: mac80211: do not pass a stopped vif to the driver in
.get_txpower
- netfilter: sanitize offset and length before calling skb_checksum()
- core:
- fix crash when config small gso_max_size/gso_ipv4_max_size
- skip offload for NETIF_F_IPV6_CSUM if ipv6 header contains extension
- mptcp: protect sched with rcu_read_lock
- eth: ice: fix crash on probe for DPLL enabled E810 LOM
- eth: macsec: fix use-after-free while sending the offloading packet
- eth: stmmac: fix unbalanced DMA map/unmap for non-paged SKB data
- eth: hns3: fix kernel crash when 1588 is sent on HIP08 devices
- eth: mtk_wed: fix path of MT7988 WO firmware"
* tag 'net-6.12-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (70 commits)
net: hns3: fix kernel crash when 1588 is sent on HIP08 devices
net: hns3: fixed hclge_fetch_pf_reg accesses bar space out of bounds issue
net: hns3: initialize reset_timer before hclgevf_misc_irq_init()
net: hns3: don't auto enable misc vector
net: hns3: Resolved the issue that the debugfs query result is inconsistent.
net: hns3: fix missing features due to dev->features configuration too early
net: hns3: fixed reset failure issues caused by the incorrect reset type
net: hns3: add sync command to sync io-pgtable
net: hns3: default enable tx bounce buffer when smmu enabled
netfilter: nft_payload: sanitize offset and length before calling skb_checksum()
net: ethernet: mtk_wed: fix path of MT7988 WO firmware
selftests: forwarding: Add IPv6 GRE remote change tests
mlxsw: spectrum_ipip: Fix memory leak when changing remote IPv6 address
mlxsw: pci: Sync Rx buffers for device
mlxsw: pci: Sync Rx buffers for CPU
mlxsw: spectrum_ptp: Add missing verification before pushing Tx header
net: skip offload for NETIF_F_IPV6_CSUM if ipv6 header contains extension
Bluetooth: hci: fix null-ptr-deref in hci_read_supported_codecs
netfilter: nf_reject_ipv6: fix potential crash in nf_send_reset6()
netfilter: Fix use-after-free in get_info()
...
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Merge tag 'nf-24-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf
Pablo Neira Ayuso says:
====================
The following patchset contains Netfilter fixes for net:
1) Remove unused parameters in conntrack_dump_flush.c used by
selftests, from Liu Jing.
2) Fix possible UaF when removing xtables module via getsockopt()
interface, from Dong Chenchen.
3) Fix potential crash in nf_send_reset6() reported by syzkaller.
From Eric Dumazet
4) Validate offset and length before calling skb_checksum()
in nft_payload, otherwise hitting BUG() is possible.
netfilter pull request 24-10-31
* tag 'nf-24-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
netfilter: nft_payload: sanitize offset and length before calling skb_checksum()
netfilter: nf_reject_ipv6: fix potential crash in nf_send_reset6()
netfilter: Fix use-after-free in get_info()
selftests: netfilter: remove unused parameter
====================
Link: https://patch.msgid.link/
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Commit e6d2c436ff ("tools/mm: allow users to provide additional
cflags/ldflags") passes now CFLAGS to Makefile. With this, build systems
with default -Werror enabled found:
slabinfo.c:1300:25: error: ignoring return value of 'chdir'
declared with attribute 'warn_unused_result' [-Werror=unused-result]
chdir("..");
^~~~~~~~~~~
page-types.c:397:35: error: format '%lu' expects argument of type
'long unsigned int', but argument 2 has type 'uint64_t'
{aka 'long long unsigned int'} [-Werror=format=]
printf("%lu\t", mapcnt0);
~~^ ~~~~~~~
..
Fix page-types by using PRIu64 for uint64_t prints and check in slabinfo
for return code on chdir("..").
Link: https://lkml.kernel.org/r/c1ceb507-94bc-461c-934d-c19b77edd825@gmail.com
Fixes: e6d2c436ff ("tools/mm: allow users to provide additional cflags/ldflags")
Signed-off-by: Wladislav Wiebe <wladislav.kw@gmail.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Herton R. Krzesinski <herton@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Test that after changing the remote address of an ip6gre net device
traffic is forwarded as expected. Test with both flat and hierarchical
topologies and with and without an input / output keys.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Link: https://patch.msgid.link/02b05246d2cdada0cf2fccffc0faa8a424d0f51b.1729866134.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The HSR test, hsr_ping.sh, actually needs 7 min to run. Around 375s to
be exact, and even more on a debug kernel or kernel with other network
security limits. The timeout setting for the kselftest is currently 45
seconds, which is way too short to integrate hsr tests to run_kselftest
infrastructure. However, timeout of hundreds of seconds is quite a long
time, especially in a CI/CD environment. It seems that we need
accelerate the test and balance with timeout setting.
The most time-consuming func is do_ping_long, where ping command sends
10 packages to the given address. The default interval between two ping
packages is 1s according to the ping Mannual. There isn't any operation
between pings thus we could pass -i 0.1 to ping to make it 10 times
faster.
While even with this short interval, the test still need about 46.4
seconds to finish because of the two HSR interfaces, each of which is
tested by calling do_ping func 12 times and do_ping_long func 19 times
and sleep for 3s.
So, an explicit setting is also needed to slightly increase the
timeout. And to leave us some slack, use 50 as default timeout.
Signed-off-by: Yunshui Jiang <jiangyunshui@kylinos.cn>
Link: https://patch.msgid.link/20241028082757.2945232-1-jiangyunshui@kylinos.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
- Update more header copies with the kernel sources, including const.h,
msr-index.h, arm64's cputype.h, kvm's, bits.h and unaligned.h
- The return from 'write' isn't a pid, fix cut'n'paste error in 'perf
trace'.
- Fix up the python binding build on architectures without
HAVE_KVM_STAT_SUPPORT.
- Add some more bounds checks to augmented_raw_syscalls.bpf.c (used to
collect syscall pointer arguments in 'perf trace') to make the
resulting bytecode to pass the kernel BPF verifier, allowing us to go
back accepting clang 12.0.1 as the minimum version required for
compiling BPF sources.
- Add __NR_capget for x86 to fix a regression on running perf + intel PT
(hw tracing) as non-root setting up the capabilities as described in
https://www.kernel.org/doc/html/latest/admin-guide/perf-security.html.
- Fix missing syscalltbl in non-explicitly listed architectures, noticed
on ARM 32-bit, that still needs a .tbl generator for the syscall
id<->name tables, should be added for v6.13.
- Handle 'perf test' failure when handling broken DWARF for ASM files.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-fixes-for-v6.12-2-2024-10-30' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools
Pull perf tools fixes from Arnaldo Carvalho de Melo:
- Update more header copies with the kernel sources, including const.h,
msr-index.h, arm64's cputype.h, kvm's, bits.h and unaligned.h
- The return from 'write' isn't a pid, fix cut'n'paste error in 'perf
trace'
- Fix up the python binding build on architectures without
HAVE_KVM_STAT_SUPPORT
- Add some more bounds checks to augmented_raw_syscalls.bpf.c (used to
collect syscall pointer arguments in 'perf trace') to make the
resulting bytecode to pass the kernel BPF verifier, allowing us to go
back accepting clang 12.0.1 as the minimum version required for
compiling BPF sources
- Add __NR_capget for x86 to fix a regression on running perf + intel
PT (hw tracing) as non-root setting up the capabilities as described
in https://www.kernel.org/doc/html/latest/admin-guide/perf-security.html
- Fix missing syscalltbl in non-explicitly listed architectures,
noticed on ARM 32-bit, that still needs a .tbl generator for the
syscall id<->name tables, should be added for v6.13
- Handle 'perf test' failure when handling broken DWARF for ASM files
* tag 'perf-tools-fixes-for-v6.12-2-2024-10-30' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools:
perf cap: Add __NR_capget to arch/x86 unistd
tools headers: Update the linux/unaligned.h copy with the kernel sources
tools headers arm64: Sync arm64's cputype.h with the kernel sources
tools headers: Synchronize {uapi/}linux/bits.h with the kernel sources
tools arch x86: Sync the msr-index.h copy with the kernel sources
perf python: Fix up the build on architectures without HAVE_KVM_STAT_SUPPORT
perf test: Handle perftool-testsuite_probe failure due to broken DWARF
tools headers UAPI: Sync kvm headers with the kernel sources
perf trace: Fix non-listed archs in the syscalltbl routines
perf build: Change the clang check back to 12.0.1
perf trace augmented_raw_syscalls: Add more checks to pass the verifier
perf trace augmented_raw_syscalls: Add extra array index bounds checking to satisfy some BPF verifiers
perf trace: The return from 'write' isn't a pid
tools headers UAPI: Sync linux/const.h with the kernel headers
Add more test cases for bits iterator:
(1) huge word test
Verify the multiplication overflow of nr_bits in bits_iter. Without
the overflow check, when nr_words is 67108865, nr_bits becomes 64,
causing bpf_probe_read_kernel_common() to corrupt the stack.
(2) max word test
Verify correct handling of maximum nr_words value (511).
(3) bad word test
Verify early termination of bits iteration when bits iterator
initialization fails.
Also rename bits_nomem to bits_too_big to better reflect its purpose.
Signed-off-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/r/20241030100516.3633640-6-houtao@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
