Since we have already allocated "len + 1" space for event->name, make sure
that name->name cannot ever accidentally cause a copy overflow by calling
strscpy() instead of the unbounded strcpy() routine. This assists in
the ongoing efforts to remove the unsafe strcpy() API[1] from the kernel.
Link: https://github.com/KSPP/linux/issues/88 [1]
Signed-off-by: Kees Cook <kees@kernel.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20241216224507.work.859-kees@kernel.org
Commit 2a010c4128 ("fs: don't block i_writecount during exec") removed
the legacy behavior of getting ETXTBSY on attempt to open and executable
file for write while it is being executed.
This commit was reverted because an application that depends on this
legacy behavior was broken by the change.
We need to allow HSM writing into executable files while executed to
fill their content on-the-fly.
To that end, disable the ETXTBSY legacy behavior for files that are
watched by pre-content events.
This change is not expected to cause regressions with existing systems
which do not have any pre-content event listeners.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Acked-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20241128142532.465176-1-amir73il@gmail.com
We queue up inodes to be defrag'ed asynchronously, which means we do not
have their original file for readahead. This means that the code to
skip readahead on pre-content watched files will not run, and we could
potentially read in empty pages.
Handle this corner case by disabling defrag on files that are currently
being watched for pre-content events.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/4cc5bcea13db7904174353d08e85157356282a59.1731684329.git.josef@toxicpanda.com
FS_PRE_ACCESS will be generated on page fault depending on the faulting
method. This pre-content event is meant to be used by hierarchical storage
managers that want to fill in the file content on first read access.
Export a simple helper that file systems that have their own ->fault()
will use, and have a more complicated helper to be do fancy things in
filemap_fault.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/aa56c50ce81b1fd18d7f5d71dd2dfced5eba9687.1731684329.git.josef@toxicpanda.com
There's nothing stopping us from supporting this, we could simply pass
the order into the helper and emit the proper length. However currently
there's no tests to validate this works properly, so disable it until
there's a desire to support this along with the appropriate tests.
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/9035b82cff08a3801cef3d06bbf2778b2e5a4dba.1731684329.git.josef@toxicpanda.com
With page faults we can trigger readahead on the file, and then
subsequent faults can find these pages and insert them into the file
without emitting an fanotify event. To avoid this case, disable
readahead if we have pre-content watches on the file. This way we are
guaranteed to get an event for every range we attempt to access on a
pre-content watched file.
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/70a54e859f555e54bc7a47b32fe5aca92b085615.1731684329.git.josef@toxicpanda.com
With FAN_DENY response, user trying to perform the filesystem operation
gets an error with errno set to EPERM.
It is useful for hierarchical storage management (HSM) service to be able
to deny access for reasons more diverse than EPERM, for example EAGAIN,
if HSM could retry the operation later.
Allow fanotify groups with priority FAN_CLASSS_PRE_CONTENT to responsd
to permission events with the response value FAN_DENY_ERRNO(errno),
instead of FAN_DENY to return a custom error.
Limit custom error values to errors expected on read(2)/write(2) and
open(2) of regular files. This list could be extended in the future.
Userspace can test for legitimate values of FAN_DENY_ERRNO(errno) by
writing a response to an fanotify group fd with a value of FAN_NOFD in
the fd field of the response.
The change in fanotify_response is backward compatible, because errno is
written in the high 8 bits of the 32bit response field and old kernels
reject respose value with high bits set.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/1e5fb6af84b69ca96b5c849fa5f10bdf4d1dc414.1731684329.git.josef@toxicpanda.com
With group class FAN_CLASS_PRE_CONTENT, report offset and length info
along with FAN_PRE_ACCESS pre-content events.
This information is meant to be used by hierarchical storage managers
that want to fill partial content of files on first access to range.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/b90a9e6c809dd3cad5684da90f23ea93ec6ce8c8.1731684329.git.josef@toxicpanda.com
Similar to FAN_ACCESS_PERM permission event, but it is only allowed with
class FAN_CLASS_PRE_CONTENT and only allowed on regular files and dirs.
Unlike FAN_ACCESS_PERM, it is safe to write to the file being accessed
in the context of the event handler.
This pre-content event is meant to be used by hierarchical storage
managers that want to fill the content of files on first read access.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/b80986f8d5b860acea2c9a73c0acd93587be5fe4.1731684329.git.josef@toxicpanda.com
Generate FS_PRE_ACCESS event before truncate, without sb_writers held.
Move the security hooks also before sb_start_write() to conform with
other security hooks (e.g. in write, fallocate).
The event will have a range info of the page surrounding the new size
to provide an opportunity to fill the conetnt at the end of file before
truncating to non-page aligned size.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/23af8201db6ac2efdea94f09ab067d81ba5de7a7.1731684329.git.josef@toxicpanda.com
We would like to add file range information to pre-content events.
Pass a struct file_range with offset and length to event handler
along with pre-content permission event.
The offset and length are aligned to page size, but we may need to
align them to minimum folio size for filesystems with large block size.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/88eddee301231d814aede27fb4d5b41ae37c9702.1731684329.git.josef@toxicpanda.com
The new FS_PRE_ACCESS permission event is similar to FS_ACCESS_PERM,
but it meant for a different use case of filling file content before
access to a file range, so it has slightly different semantics.
Generate FS_PRE_ACCESS/FS_ACCESS_PERM as two seperate events, so content
scanners could inspect the content filled by pre-content event handler.
Unlike FS_ACCESS_PERM, FS_PRE_ACCESS is also called before a file is
modified by syscalls as write() and fallocate().
FS_ACCESS_PERM is reported also on blockdev and pipes, but the new
pre-content events are only reported for regular files and dirs.
The pre-content events are meant to be used by hierarchical storage
managers that want to fill the content of files on first access.
There are some specific requirements from filesystems that could
be used with pre-content events, so add a flag for fs to opt-in
for pre-content events explicitly before they can be used.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/b934c5e3af205abc4e0e4709f6486815937ddfdf.1731684329.git.josef@toxicpanda.com
Previously we would only include optional information if you requested
it via an FAN_ flag at fanotify_init time (FAN_REPORT_FID for example).
However this isn't necessary as the event length is encoded in the
metadata, and if the user doesn't want to consume the information they
don't have to. With the PRE_ACCESS events we will always generate range
information, so drop this check in order to allow this extra
information to be exported without needing to have another flag.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/afcbc4e4139dee076ef1757918b037d3b48c3edb.1731684329.git.josef@toxicpanda.com
So far, we set FMODE_NONOTIFY_ flags at open time if we know that there
are no permission event watchers at all on the filesystem, but lack of
FMODE_NONOTIFY_ flags does not mean that the file is actually watched.
For pre-content events, it is possible to optimize things so that we
don't bother trying to send pre-content events if file was not watched
(through sb, mnt, parent or inode itself) on open. Set FMODE_NONOTIFY_
flags according to that.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/2ddcc9f8d1fde48d085318a6b5a889289d8871d8.1731684329.git.josef@toxicpanda.com
Legacy inotify/fanotify listeners can add watches for events on inode,
parent or mount and expect to get events (e.g. FS_MODIFY) on files that
were already open at the time of setting up the watches.
fanotify permission events are typically used by Anti-malware sofware,
that is watching the entire mount and it is not common to have more that
one Anti-malware engine installed on a system.
To reduce the overhead of the fsnotify_file_perm() hooks on every file
access, relax the semantics of the legacy FAN_ACCESS_PERM event to generate
events only if there were *any* permission event listeners on the
filesystem at the time that the file was opened.
The new semantic is implemented by extending the FMODE_NONOTIFY bit into
two FMODE_NONOTIFY_* bits, that are used to store a mode for which of the
events types to report.
This is going to apply to the new fanotify pre-content events in order
to reduce the cost of the new pre-content event vfs hooks.
[Thanks to Bert Karwatzki <spasswolf@web.de> for reporting a bug in this
code with CONFIG_FANOTIFY_ACCESS_PERMISSIONS disabled]
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/linux-fsdevel/CAHk-=wj8L=mtcRTi=NECHMGfZQgXOp_uix1YVh04fEmrKaMnXA@mail.gmail.com/
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/5ea5f8e283d1edb55aa79c35187bfe344056af14.1731684329.git.josef@toxicpanda.com
- Have the BCM2836 interrupt controller enter power management states properly
- Other fixlets
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Merge tag 'irq_urgent_for_v6.13_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Borislav Petkov:
- Fix a /proc/interrupts formatting regression
- Have the BCM2836 interrupt controller enter power management states
properly
- Other fixlets
* tag 'irq_urgent_for_v6.13_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/stm32mp-exti: CONFIG_STM32MP_EXTI should not default to y when compile-testing
genirq/proc: Add missing space separator back
irqchip/bcm2836: Enable SKIP_SET_WAKE and MASK_ON_SUSPEND
irqchip/gic-v3: Fix irq_complete_ack() comment
conjunction with overly long idle sleeps, falsely trigger the negative
motion detection of clocksources
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Merge tag 'timers_urgent_for_v6.13_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Borislav Petkov:
- Handle the case where clocksources with small counter width can,
in conjunction with overly long idle sleeps, falsely trigger the
negative motion detection of clocksources
* tag 'timers_urgent_for_v6.13_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clocksource: Make negative motion detection more robust
the guest when it has been set already on the host
- Make sure cacheinfo structures memory is allocated to address a boot NULL
ptr dereference on Intel Meteor Lake which has different numbers of subleafs
in its CPUID(4) leaf
- Take care of the GDT restoring on the kexec path too, as expected by
the kernel
- Make sure SMP is not disabled when IO-APIC is disabled on the kernel
cmdline
- Add a PGD flag _PAGE_NOPTISHADOW to instruct machinery not to propagate
changes to the kernelmode page tables, to the user portion, in PTI
- Mark Intel Lunar Lake as affected by an issue where MONITOR wakeups can get
lost and thus user-visible delays happen
- Make sure PKRU is properly restored with XRSTOR on AMD after a PRKU write of
0 (WRPKRU) which will mark PKRU in its init state and thus lose the
actual buffer
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Merge tag 'x86_urgent_for_v6.13_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
- Have the Automatic IBRS setting check on AMD does not falsely fire in
the guest when it has been set already on the host
- Make sure cacheinfo structures memory is allocated to address a boot
NULL ptr dereference on Intel Meteor Lake which has different numbers
of subleafs in its CPUID(4) leaf
- Take care of the GDT restoring on the kexec path too, as expected by
the kernel
- Make sure SMP is not disabled when IO-APIC is disabled on the kernel
cmdline
- Add a PGD flag _PAGE_NOPTISHADOW to instruct machinery not to
propagate changes to the kernelmode page tables, to the user portion,
in PTI
- Mark Intel Lunar Lake as affected by an issue where MONITOR wakeups
can get lost and thus user-visible delays happen
- Make sure PKRU is properly restored with XRSTOR on AMD after a PRKU
write of 0 (WRPKRU) which will mark PKRU in its init state and thus
lose the actual buffer
* tag 'x86_urgent_for_v6.13_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/CPU/AMD: WARN when setting EFER.AUTOIBRS if and only if the WRMSR fails
x86/cacheinfo: Delete global num_cache_leaves
cacheinfo: Allocate memory during CPU hotplug if not done from the primary CPU
x86/kexec: Restore GDT on return from ::preserve_context kexec
x86/cpu/topology: Remove limit of CPUs due to disabled IO/APIC
x86/mm: Add _PAGE_NOPTISHADOW bit to avoid updating userspace page tables
x86/cpu: Add Lunar Lake to list of CPUs with a broken MONITOR implementation
x86/pkeys: Ensure updated PKRU value is XRSTOR'd
x86/pkeys: Change caller of update_pkru_in_sigframe()
The usual bunch of singletons - please see the relevant changelogs for
details.
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Merge tag 'mm-hotfixes-stable-2024-12-07-22-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc fixes from Andrew Morton:
"24 hotfixes. 17 are cc:stable. 15 are MM and 9 are non-MM.
The usual bunch of singletons - please see the relevant changelogs for
details"
* tag 'mm-hotfixes-stable-2024-12-07-22-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (24 commits)
iio: magnetometer: yas530: use signed integer type for clamp limits
sched/numa: fix memory leak due to the overwritten vma->numab_state
mm/damon: fix order of arguments in damos_before_apply tracepoint
lib: stackinit: hide never-taken branch from compiler
mm/filemap: don't call folio_test_locked() without a reference in next_uptodate_folio()
scatterlist: fix incorrect func name in kernel-doc
mm: correct typo in MMAP_STATE() macro
mm: respect mmap hint address when aligning for THP
mm: memcg: declare do_memsw_account inline
mm/codetag: swap tags when migrate pages
ocfs2: update seq_file index in ocfs2_dlm_seq_next
stackdepot: fix stack_depot_save_flags() in NMI context
mm: open-code page_folio() in dump_page()
mm: open-code PageTail in folio_flags() and const_folio_flags()
mm: fix vrealloc()'s KASAN poisoning logic
Revert "readahead: properly shorten readahead when falling back to do_page_cache_ra()"
selftests/damon: add _damon_sysfs.py to TEST_FILES
selftest: hugetlb_dio: fix test naming
ocfs2: free inode when ocfs2_get_init_inode() fails
nilfs2: fix potential out-of-bounds memory access in nilfs_find_entry()
...
Since commit 13b25489b6 ("kbuild: change working directory to external
module directory with M="), the Debian package build fails if a relative
path is specified with the O= option.
$ make O=build bindeb-pkg
[ snip ]
dpkg-deb: building package 'linux-image-6.13.0-rc1' in '../linux-image-6.13.0-rc1_6.13.0-rc1-6_amd64.deb'.
Rebuilding host programs with x86_64-linux-gnu-gcc...
make[6]: Entering directory '/home/masahiro/linux/build'
/home/masahiro/linux/Makefile:190: *** specified kernel directory "build" does not exist. Stop.
This occurs because the sub_make_done flag is cleared, even though the
working directory is already in the output directory.
Passing KBUILD_OUTPUT=. resolves the issue.
Fixes: 13b25489b6 ("kbuild: change working directory to external module directory with M=")
Reported-by: Charlie Jenkins <charlie@rivosinc.com>
Closes: https://lore.kernel.org/all/Z1DnP-GJcfseyrM3@ghost/
Tested-by: Charlie Jenkins <charlie@rivosinc.com>
Reviewed-by: Charlie Jenkins <charlie@rivosinc.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
The compiler can fully inline the actual handler function of an interrupt
entry into the .irqentry.text entry point. If such a function contains an
access which has an exception table entry, modpost complains about a
section mismatch:
WARNING: vmlinux.o(__ex_table+0x447c): Section mismatch in reference ...
The relocation at __ex_table+0x447c references section ".irqentry.text"
which is not in the list of authorized sections.
Add .irqentry.text to OTHER_SECTIONS to cure the issue.
Reported-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org # needed for linux-5.4-y
Link: https://lore.kernel.org/all/20241128111844.GE10431@google.com/
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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Merge tag '6.13-rc1-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client fixes from Steve French:
- DFS fix (for race with tree disconnect and dfs cache worker)
- Four fixes for SMB3.1.1 posix extensions:
- improve special file support e.g. to Samba, retrieving the file
type earlier
- reduce roundtrips (e.g. on ls -l, in some cases)
* tag '6.13-rc1-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
smb: client: fix potential race in cifs_put_tcon()
smb3.1.1: fix posix mounts to older servers
fs/smb/client: cifs_prime_dcache() for SMB3 POSIX reparse points
fs/smb/client: Implement new SMB3 POSIX type
fs/smb/client: avoid querying SMB2_OP_QUERY_WSL_EA for SMB3 POSIX
Large number of small fixes, all in drivers. The three largest fixes
are dead code removal in bfa, qla2xxx: fix abort timeout in bsg and
mpi3mr: Fix corrupt config pages PHY state is switched in sysfs
Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Large number of small fixes, all in drivers"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (32 commits)
scsi: scsi_debug: Fix hrtimer support for ndelay
scsi: storvsc: Do not flag MAINTENANCE_IN return of SRB_STATUS_DATA_OVERRUN as an error
scsi: ufs: core: Add missing post notify for power mode change
scsi: sg: Fix slab-use-after-free read in sg_release()
scsi: ufs: core: sysfs: Prevent div by zero
scsi: qla2xxx: Update version to 10.02.09.400-k
scsi: qla2xxx: Supported speed displayed incorrectly for VPorts
scsi: qla2xxx: Fix NVMe and NPIV connect issue
scsi: qla2xxx: Remove check req_sg_cnt should be equal to rsp_sg_cnt
scsi: qla2xxx: Fix use after free on unload
scsi: qla2xxx: Fix abort in bsg timeout
scsi: mpi3mr: Update driver version to 8.12.0.3.50
scsi: mpi3mr: Handling of fault code for insufficient power
scsi: mpi3mr: Start controller indexing from 0
scsi: mpi3mr: Fix corrupt config pages PHY state is switched in sysfs
scsi: mpi3mr: Synchronize access to ioctl data buffer
scsi: mpt3sas: Update driver version to 51.100.00.00
scsi: mpt3sas: Diag-Reset when Doorbell-In-Use bit is set during driver load time
scsi: ufs: pltfrm: Dellocate HBA during ufshcd_pltfrm_remove()
scsi: ufs: pltfrm: Drop PM runtime reference count after ufshcd_remove()
...
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Merge tag 'block-6.13-20241207' of git://git.kernel.dk/linux
Pull block fixes from Jens Axboe:
- NVMe pull request via Keith:
- Target fix using incorrect zero buffer (Nilay)
- Device specifc deallocate quirk fixes (Christoph, Keith)
- Fabrics fix for handling max command target bugs (Maurizio)
- Cocci fix usage for kzalloc (Yu-Chen)
- DMA size fix for host memory buffer feature (Christoph)
- Fabrics queue cleanup fixes (Chunguang)
- CPU hotplug ordering fixes
- Add missing MODULE_DESCRIPTION for rnull
- bcache error value fix
- virtio-blk queue freeze fix
* tag 'block-6.13-20241207' of git://git.kernel.dk/linux:
blk-mq: move cpuhp callback registering out of q->sysfs_lock
blk-mq: register cpuhp callback after hctx is added to xarray table
virtio-blk: don't keep queue frozen during system suspend
nvme-tcp: simplify nvme_tcp_teardown_io_queues()
nvme-tcp: no need to quiesce admin_q in nvme_tcp_teardown_io_queues()
nvme-rdma: unquiesce admin_q before destroy it
nvme-tcp: fix the memleak while create new ctrl failed
nvme-pci: don't use dma_alloc_noncontiguous with 0 merge boundary
nvmet: replace kmalloc + memset with kzalloc for data allocation
nvme-fabrics: handle zero MAXCMD without closing the connection
bcache: revert replacing IS_ERR_OR_NULL with IS_ERR again
nvme-pci: remove two deallocate zeroes quirks
block: rnull: add missing MODULE_DESCRIPTION
nvme: don't apply NVME_QUIRK_DEALLOCATE_ZEROES when DSM is not supported
nvmet: use kzalloc instead of ZERO_PAGE in nvme_execute_identify_ns_nvm()
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Merge tag 'io_uring-6.13-20241207' of git://git.kernel.dk/linux
Pull io_uring fix from Jens Axboe:
"A single fix for a parameter type which affects 32-bit"
* tag 'io_uring-6.13-20241207' of git://git.kernel.dk/linux:
io_uring: Change res2 parameter type in io_uring_cmd_done
- Fix several issues for BPF LPM trie map which were found by
syzbot and during addition of new test cases (Hou Tao)
- Fix a missing process_iter_arg register type check in the
BPF verifier (Kumar Kartikeya Dwivedi, Tao Lyu)
- Fix several correctness gaps in the BPF verifier when
interacting with the BPF stack without CAP_PERFMON
(Kumar Kartikeya Dwivedi, Eduard Zingerman, Tao Lyu)
- Fix OOB BPF map writes when deleting elements for the case of
xsk map as well as devmap (Maciej Fijalkowski)
- Fix xsk sockets to always clear DMA mapping information when
unmapping the pool (Larysa Zaremba)
- Fix sk_mem_uncharge logic in tcp_bpf_sendmsg to only uncharge
after sent bytes have been finalized (Zijian Zhang)
- Fix BPF sockmap with vsocks which was missing a queue check
in poll and sockmap cleanup on close (Michal Luczaj)
- Fix tools infra to override makefile ARCH variable if defined
but empty, which addresses cross-building tools. (Björn Töpel)
- Fix two resolve_btfids build warnings on unresolved bpf_lsm
symbols (Thomas Weißschuh)
- Fix a NULL pointer dereference in bpftool (Amir Mohammadi)
- Fix BPF selftests to check for CONFIG_PREEMPTION instead of
CONFIG_PREEMPT (Sebastian Andrzej Siewior)
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 several issues for BPF LPM trie map which were found by syzbot
and during addition of new test cases (Hou Tao)
- Fix a missing process_iter_arg register type check in the BPF
verifier (Kumar Kartikeya Dwivedi, Tao Lyu)
- Fix several correctness gaps in the BPF verifier when interacting
with the BPF stack without CAP_PERFMON (Kumar Kartikeya Dwivedi,
Eduard Zingerman, Tao Lyu)
- Fix OOB BPF map writes when deleting elements for the case of xsk map
as well as devmap (Maciej Fijalkowski)
- Fix xsk sockets to always clear DMA mapping information when
unmapping the pool (Larysa Zaremba)
- Fix sk_mem_uncharge logic in tcp_bpf_sendmsg to only uncharge after
sent bytes have been finalized (Zijian Zhang)
- Fix BPF sockmap with vsocks which was missing a queue check in poll
and sockmap cleanup on close (Michal Luczaj)
- Fix tools infra to override makefile ARCH variable if defined but
empty, which addresses cross-building tools. (Björn Töpel)
- Fix two resolve_btfids build warnings on unresolved bpf_lsm symbols
(Thomas Weißschuh)
- Fix a NULL pointer dereference in bpftool (Amir Mohammadi)
- Fix BPF selftests to check for CONFIG_PREEMPTION instead of
CONFIG_PREEMPT (Sebastian Andrzej Siewior)
* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf: (31 commits)
selftests/bpf: Add more test cases for LPM trie
selftests/bpf: Move test_lpm_map.c to map_tests
bpf: Use raw_spinlock_t for LPM trie
bpf: Switch to bpf mem allocator for LPM trie
bpf: Fix exact match conditions in trie_get_next_key()
bpf: Handle in-place update for full LPM trie correctly
bpf: Handle BPF_EXIST and BPF_NOEXIST for LPM trie
bpf: Remove unnecessary kfree(im_node) in lpm_trie_update_elem
bpf: Remove unnecessary check when updating LPM trie
selftests/bpf: Add test for narrow spill into 64-bit spilled scalar
selftests/bpf: Add test for reading from STACK_INVALID slots
selftests/bpf: Introduce __caps_unpriv annotation for tests
bpf: Fix narrow scalar spill onto 64-bit spilled scalar slots
bpf: Don't mark STACK_INVALID as STACK_MISC in mark_stack_slot_misc
samples/bpf: Remove unnecessary -I flags from libbpf EXTRA_CFLAGS
bpf: Zero index arg error string for dynptr and iter
selftests/bpf: Add tests for iter arg check
bpf: Ensure reg is PTR_TO_STACK in process_iter_arg
tools: Override makefile ARCH variable if defined, but empty
selftests/bpf: Add apply_bytes test to test_txmsg_redir_wait_sndmem in test_sockmap
...
- MTE/hugetlbfs:
- Set VM_MTE_ALLOWED in the arch code and remove it from the core code
for hugetlbfs mappings
- Fix copy_highpage() warning when the source is a huge page but not
MTE tagged, taking the wrong small page path
- drivers/virt/coco:
- Add the pKVM and Arm CCA drivers under the arm64 maintainership
- Fix the pkvm driver to fall back to ioremap() (and warn) if the
MMIO_GUARD hypercall fails
- Keep the Arm CCA driver default 'n' rather than 'm'
- A series of fixes for the arm64 ptrace() implementation, potentially
leading to the kernel consuming uninitialised stack variables when
PTRACE_SETREGSET is invoked with a length of 0
- Fix zone_dma_limit calculation when RAM starts below 4GB and ZONE_DMA
is capped to this limit
- Fix early boot warning with CONFIG_DEBUG_VIRTUAL=y triggered by a call
to page_to_phys() (from patch_map()) which checks pfn_valid() before
vmemmap has been set up
- Do not clobber bits 15:8 of the ASID used for TTBR1_EL1 and TLBI ops
when the kernel assumes 8-bit ASIDs but running under a hypervisor on
a system that implements 16-bit ASIDs (found running Linux under
Parallels on Apple M4)
- ACPI/IORT: Add PMCG platform information for HiSilicon HIP09A as it is
using the same SMMU PMCG as HIP09 and suffers from the same errata
- Add GCS to cpucap_is_possible(), missed in the recent merge
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
"Nothing major, some left-overs from the recent merging window (MTE,
coco) and some newly found issues like the ptrace() ones.
- MTE/hugetlbfs:
- Set VM_MTE_ALLOWED in the arch code and remove it from the core
code for hugetlbfs mappings
- Fix copy_highpage() warning when the source is a huge page but
not MTE tagged, taking the wrong small page path
- drivers/virt/coco:
- Add the pKVM and Arm CCA drivers under the arm64 maintainership
- Fix the pkvm driver to fall back to ioremap() (and warn) if the
MMIO_GUARD hypercall fails
- Keep the Arm CCA driver default 'n' rather than 'm'
- A series of fixes for the arm64 ptrace() implementation,
potentially leading to the kernel consuming uninitialised stack
variables when PTRACE_SETREGSET is invoked with a length of 0
- Fix zone_dma_limit calculation when RAM starts below 4GB and
ZONE_DMA is capped to this limit
- Fix early boot warning with CONFIG_DEBUG_VIRTUAL=y triggered by a
call to page_to_phys() (from patch_map()) which checks pfn_valid()
before vmemmap has been set up
- Do not clobber bits 15:8 of the ASID used for TTBR1_EL1 and TLBI
ops when the kernel assumes 8-bit ASIDs but running under a
hypervisor on a system that implements 16-bit ASIDs (found running
Linux under Parallels on Apple M4)
- ACPI/IORT: Add PMCG platform information for HiSilicon HIP09A as it
is using the same SMMU PMCG as HIP09 and suffers from the same
errata
- Add GCS to cpucap_is_possible(), missed in the recent merge"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: ptrace: fix partial SETREGSET for NT_ARM_GCS
arm64: ptrace: fix partial SETREGSET for NT_ARM_POE
arm64: ptrace: fix partial SETREGSET for NT_ARM_FPMR
arm64: ptrace: fix partial SETREGSET for NT_ARM_TAGGED_ADDR_CTRL
arm64: cpufeature: Add GCS to cpucap_is_possible()
coco: virt: arm64: Do not enable cca guest driver by default
arm64: mte: Fix copy_highpage() warning on hugetlb folios
arm64: Ensure bits ASID[15:8] are masked out when the kernel uses 8-bit ASIDs
ACPI/IORT: Add PMCG platform information for HiSilicon HIP09A
MAINTAINERS: Add CCA and pKVM CoCO guest support to the ARM64 entry
drivers/virt: pkvm: Don't fail ioremap() call if MMIO_GUARD fails
arm64: patching: avoid early page_to_phys()
arm64: mm: Fix zone_dma_limit calculation
arm64: mte: set VM_MTE_ALLOWED for hugetlbfs at correct place
Rework of NUMA initialization in arch_numa dropped a check that refused to
accept configurations with invalid node IDs.
Restore that check to ensure that when firmware passes invalid nodes, such
configuration is rejected and kernel gracefully falls back to dummy NUMA.
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Merge tag 'fixes-2024-12-06' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock
Pull memblock fixes from Mike Rapoport:
"Restore check for node validity in arch_numa.
The rework of NUMA initialization in arch_numa dropped a check that
refused to accept configurations with invalid node IDs.
Restore that check to ensure that when firmware passes invalid nodes,
such configuration is rejected and kernel gracefully falls back to
dummy NUMA"
* tag 'fixes-2024-12-06' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock:
arch_numa: Restore nid checks before registering a memblock with a node
memblock: allow zero threshold in validate_numa_converage()
- amdgu: mostly display fixes + jpeg vcn 1.0, sriov, dcn4.0 resume
firxes
- amdkfd fixes
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Merge tag 'drm-fixes-2024-12-06' of https://gitlab.freedesktop.org/drm/kernel
Pull more drm fixes from Simona Vetter:
"Due to mailing list unreliability we missed the amdgpu pull, hence
part two with that now included:
- amdgu: mostly display fixes + jpeg vcn 1.0, sriov, dcn4.0 resume
fixes
- amdkfd fixes"
* tag 'drm-fixes-2024-12-06' of https://gitlab.freedesktop.org/drm/kernel:
drm/amdgpu: rework resume handling for display (v2)
drm/amd/pm: fix and simplify workload handling
Revert "drm/amd/pm: correct the workload setting"
drm/amdgpu: fix sriov reinit late orders
drm/amdgpu: Fix ISP hw init issue
drm/amd/display: Add hblank borrowing support
drm/amd/display: Limit VTotal range to max hw cap minus fp
drm/amd/display: Correct prefetch calculation
drm/amd/display: Add option to retrieve detile buffer size
drm/amd/display: Add a left edge pixel if in YCbCr422 or YCbCr420 and odm
drm/amdkfd: hard-code cacheline for gc943,gc944
drm/amdkfd: add MEC version that supports no PCIe atomics for GFX12
drm/amd/display: Fix programming backlight on OLED panels
drm/amd: Sanity check the ACPI EDID
drm/amdgpu/hdp7.0: do a posting read when flushing HDP
drm/amdgpu/hdp6.0: do a posting read when flushing HDP
drm/amdgpu/hdp5.2: do a posting read when flushing HDP
drm/amdgpu/hdp5.0: do a posting read when flushing HDP
drm/amdgpu/hdp4.0: do a posting read when flushing HDP
drm/amdgpu/jpeg1.0: fix idle work handler
dma-fence:
- Fix reference leak on fence-merge failure path
- Simplify fence merging with kernel's sort()
- Fix dma_fence_array_signaled() to ensure forward progress
dp_mst:
- Fix MST sideband message body length check
- Fix a bunch of locking/state handling with DP MST msgs
sti:
- Add __iomem for mixer_dbg_mxn()'s parameter
xe:
- Missing init value and 64-bit write-order check
- Fix a memory allocation issue causing lockdep violation
v3d:
- performance counter fix.
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Merge tag 'drm-fixes-2024-12-07' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
"Pretty quiet week which is probably expected after US holidays, the
dma-fence and displayport MST message handling fixes make up the bulk
of this, along with a couple of minor xe and other driver fixes.
dma-fence:
- Fix reference leak on fence-merge failure path
- Simplify fence merging with kernel's sort()
- Fix dma_fence_array_signaled() to ensure forward progress
dp_mst:
- Fix MST sideband message body length check
- Fix a bunch of locking/state handling with DP MST msgs
sti:
- Add __iomem for mixer_dbg_mxn()'s parameter
xe:
- Missing init value and 64-bit write-order check
- Fix a memory allocation issue causing lockdep violation
v3d:
- Performance counter fix"
* tag 'drm-fixes-2024-12-07' of https://gitlab.freedesktop.org/drm/kernel:
drm/v3d: Enable Performance Counters before clearing them
drm/dp_mst: Use reset_msg_rx_state() instead of open coding it
drm/dp_mst: Reset message rx state after OOM in drm_dp_mst_handle_up_req()
drm/dp_mst: Ensure mst_primary pointer is valid in drm_dp_mst_handle_up_req()
drm/dp_mst: Fix down request message timeout handling
drm/dp_mst: Simplify error path in drm_dp_mst_handle_down_rep()
drm/dp_mst: Verify request type in the corresponding down message reply
drm/dp_mst: Fix resetting msg rx state after topology removal
drm/xe: Move the coredump registration to the worker thread
drm/xe/guc: Fix missing init value and add register order check
drm/sti: Add __iomem for mixer_dbg_mxn's parameter
drm/dp_mst: Fix MST sideband message body length check
dma-buf: fix dma_fence_array_signaled v4
dma-fence: Use kernel's sort for merging fences
dma-fence: Fix reference leak on fence merge failure path
A collection of small fixes that have been gathered in the week.
- Fix the missing XRUN handling in USB-audio low latency mode
- Fix regression by the previous USB-audio hadening change
- Clean up old SH sound driver to use the standard helpers
- A few further fixes for MIDI 2.0 UMP handling
- Various HD-audio and USB-audio quirks
- Fix jack handling at PM on ASoC Intel AVS
- Misc small fixes for ASoC SOF and Mediatek
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Merge tag 'sound-6.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"A collection of small fixes that have been gathered in the week.
- Fix the missing XRUN handling in USB-audio low latency mode
- Fix regression by the previous USB-audio hadening change
- Clean up old SH sound driver to use the standard helpers
- A few further fixes for MIDI 2.0 UMP handling
- Various HD-audio and USB-audio quirks
- Fix jack handling at PM on ASoC Intel AVS
- Misc small fixes for ASoC SOF and Mediatek"
* tag 'sound-6.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda/realtek: Fix spelling mistake "Firelfy" -> "Firefly"
ASoC: mediatek: mt8188-mt6359: Remove hardcoded dmic codec
ALSA: hda/realtek: fix micmute LEDs don't work on HP Laptops
ALSA: usb-audio: Add extra PID for RME Digiface USB
ALSA: usb-audio: Fix a DMA to stack memory bug
ASoC: SOF: ipc3-topology: fix resource leaks in sof_ipc3_widget_setup_comp_dai()
ALSA: hda/realtek: Add support for Samsung Galaxy Book3 360 (NP730QFG)
ASoC: Intel: avs: da7219: Remove suspend_pre() and resume_post()
ALSA: hda/tas2781: Fix error code tas2781_read_acpi()
ALSA: hda/realtek: Enable mute and micmute LED on HP ProBook 430 G8
ALSA: usb-audio: add mixer mapping for Corsair HS80
ALSA: ump: Shut up truncated string warning
ALSA: sh: Use standard helper for buffer accesses
ALSA: usb-audio: Notify xrun for low-latency mode
ALSA: hda/conexant: fix Z60MR100 startup pop issue
ALSA: ump: Update legacy substream names upon FB info update
ALSA: ump: Indicate the inactive group in legacy substream names
ALSA: ump: Don't open legacy substream for an inactive group
ALSA: seq: ump: Fix seq port updates per FB info notify
A couple of small fixes, fixing an incorrect format specifier in a log
message and adding missing cleanup of the devres data used to support
dev_get_regmap() when a device is unregistered.
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Merge tag 'regmap-fix-v6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap fixes from Mark Brown:
"A couple of small fixes, fixing an incorrect format specifier in a log
message and adding missing cleanup of the devres data used to support
dev_get_regmap() when a device is unregistered"
* tag 'regmap-fix-v6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: detach regmap from dev on regmap_exit
regmap: Use correct format specifier for logging range errors
A few small driver specific fixes and device ID updates for SPI. The
Apple change flags the driver as being compatible with the core's GPIO
chip select support, fixing support for some systems.
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Merge tag 'spi-fix-v6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A few small driver specific fixes and device ID updates for SPI.
The Apple change flags the driver as being compatible with the core's
GPIO chip select support, fixing support for some systems"
* tag 'spi-fix-v6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: omap2-mcspi: Fix the IS_ERR() bug for devm_clk_get_optional_enabled()
spi: intel: Add Panther Lake SPI controller support
spi: apple: Set use_gpio_descriptors to true
spi: mpc52xx: Add cancel_work_sync before module remove
- Further prevent card detect during shutdown
MMC host:
- sdhci-pci: Add DMI quirk for missing CD GPIO on Vexia Edu Atla 10 tablet
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Merge tag 'mmc-v6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:
"Core:
- Further prevent card detect during shutdown
Host drivers:
- sdhci-pci: Add DMI quirk for missing CD GPIO on Vexia Edu Atla 10
tablet"
* tag 'mmc-v6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: core: Further prevent card detect during shutdown
mmc: sdhci-pci: Add DMI quirk for missing CD GPIO on Vexia Edu Atla 10 tablet
- Fix a couple of memory-leaks during genpd init/remove
pmdomain providers:
- imx: Adjust delay for gpcv2 to fix power up handshake
- mediatek: Fix DT bindings by adding another nested power-domain layer
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Merge tag 'pmdomain-v6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm
Pull pmdomain fixes from Ulf Hansson:
"Core:
- Fix a couple of memory-leaks during genpd init/remove
Providers:
- imx: Adjust delay for gpcv2 to fix power up handshake
- mediatek: Fix DT bindings by adding another nested power-domain
layer"
* tag 'pmdomain-v6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm:
pmdomain: imx: gpcv2: Adjust delay after power up handshake
pmdomain: core: Fix error path in pm_genpd_init() when ida alloc fails
pmdomain: core: Add missing put_device()
dt-bindings: power: mediatek: Add another nested power-domain layer
When ensuring EFER.AUTOIBRS is set, WARN only on a negative return code
from msr_set_bit(), as '1' is used to indicate the WRMSR was successful
('0' indicates the MSR bit was already set).
Fixes: 8cc68c9c9e ("x86/CPU/AMD: Make sure EFER[AIBRSE] is set")
Reported-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/Z1MkNofJjt7Oq0G6@google.com
Closes: https://lore.kernel.org/all/20241205220604.GA2054199@thelio-3990X
Hou Tao says:
====================
This patch set fixes several issues for LPM trie. These issues were
found during adding new test cases or were reported by syzbot.
The patch set is structured as follows:
Patch #1~#2 are clean-ups for lpm_trie_update_elem().
Patch #3 handles BPF_EXIST and BPF_NOEXIST correctly for LPM trie.
Patch #4 fixes the accounting of n_entries when doing in-place update.
Patch #5 fixes the exact match condition in trie_get_next_key() and it
may skip keys when the passed key is not found in the map.
Patch #6~#7 switch from kmalloc() to bpf memory allocator for LPM trie
to fix several lock order warnings reported by syzbot. It also enables
raw_spinlock_t for LPM trie again. After these changes, the LPM trie will
be closer to being usable in any context (though the reentrance check of
trie->lock is still missing, but it is on my todo list).
Patch #8: move test_lpm_map to map_tests to make it run regularly.
Patch #9: add test cases for the issues fixed by patch #3~#5.
Please see individual patches for more details. Comments are always
welcome.
Change Log:
v3:
* patch #2: remove the unnecessary NULL-init for im_node
* patch #6: alloc the leaf node before disabling IRQ to low
the possibility of -ENOMEM when leaf_size is large; Free
these nodes outside the trie lock (Suggested by Alexei)
* collect review and ack tags (Thanks for Toke & Daniel)
v2: https://lore.kernel.org/bpf/20241127004641.1118269-1-houtao@huaweicloud.com/
* collect review tags (Thanks for Toke)
* drop "Add bpf_mem_cache_is_mergeable() helper" patch
* patch #3~#4: add fix tag
* patch #4: rename the helper to trie_check_add_elem() and increase
n_entries in it.
* patch #6: use one bpf mem allocator and update commit message to
clarify that using bpf mem allocator is more appropriate.
* patch #7: update commit message to add the possible max running time
for update operation.
* patch #9: update commit message to specify the purpose of these test
cases.
v1: https://lore.kernel.org/bpf/20241118010808.2243555-1-houtao@huaweicloud.com/
====================
Link: https://lore.kernel.org/all/20241206110622.1161752-1-houtao@huaweicloud.com/
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Add more test cases for LPM trie in test_maps:
1) test_lpm_trie_update_flags
It constructs various use cases for BPF_EXIST and BPF_NOEXIST and check
whether the return value of update operation is expected.
2) test_lpm_trie_update_full_maps
It tests the update operations on a full LPM trie map. Adding new node
will fail and overwriting the value of existed node will succeed.
3) test_lpm_trie_iterate_strs and test_lpm_trie_iterate_ints
There two test cases test whether the iteration through get_next_key is
sorted and expected. These two test cases delete the minimal key after
each iteration and check whether next iteration returns the second
minimal key. The only difference between these two test cases is the
former one saves strings in the LPM trie and the latter saves integers.
Without the fix of get_next_key, these two cases will fail as shown
below:
test_lpm_trie_iterate_strs(1091):FAIL:iterate #2 got abc exp abS
test_lpm_trie_iterate_ints(1142):FAIL:iterate #1 got 0x2 exp 0x1
Signed-off-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/r/20241206110622.1161752-10-houtao@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
