Assert that the file object is allocated in a backing_file container
so that file_user_path() could be used to display the user path and
not the backing file's path in /proc/<pid>/maps.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
There is not much in those helpers, but it makes sense to have them
logically next to the backing_file_{read,write}_iter() helpers as they
may grow more common logic in the future.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
In preparation for factoring out some backing file io helpers from
overlayfs, move backing_file_open() into a new file fs/backing-file.c
and header.
Add a MAINTAINERS entry for stackable filesystems and add a Kconfig
FS_STACK which stackable filesystems need to select.
For now, the backing_file struct, the backing_file alloc/free functions
and the backing_file_real_path() accessor remain internal to file_table.c.
We may change that in the future.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
In preparation for pre-content permission events with file access range,
move fsnotify_file_perm() hook out of security_file_permission() and into
the callers.
Callers that have the access range information call the new hook
fsnotify_file_area_perm() with the access range.
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231212094440.250945-6-amir73il@gmail.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
filesystem may be modified in the context of fanotify permission events
(e.g. by HSM service), so assert that sb freeze protection is not held.
If the assertion fails, then the following deadlock would be possible:
CPU0 CPU1 CPU2
-------------------------------------------------------------------------
file_start_write()#0
...
fsnotify_perm()
fanotify_get_response() => (read event and fill file)
...
... freeze_super()
... sb_wait_write()
...
vfs_write()
file_start_write()#1
This example demonstrates a use case of an hierarchical storage management
(HSM) service that uses fanotify permission events to fill the content of
a file before access, while a 3rd process starts fsfreeze.
This creates a circular dependeny:
file_start_write()#0 => fanotify_get_response =>
file_start_write()#1 =>
sb_wait_write() =>
file_end_write()#0
Where file_end_write()#0 can never be called and none of the threads can
make progress.
The assertion is checked for both MAY_READ and MAY_WRITE permission
hooks in preparation for a pre-modify permission event.
The assertion is not checked for an open permission event, because
do_open() takes mnt_want_write() in O_TRUNC case, meaning that it is not
safe to write to filesystem in the content of an open permission event.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231212094440.250945-5-amir73il@gmail.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
We would like to make changes to the fsnotify access permission hook -
add file range arguments and add the pre modify event.
In preparation for these changes, split the fsnotify_perm() hook into
fsnotify_open_perm() and fsnotify_file_perm().
This is needed for fanotify "pre content" events.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231212094440.250945-4-amir73il@gmail.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
generic_copy_file_range() is just a wrapper around splice_file_range(),
which caps the maximum copy length.
The only caller of splice_file_range(), namely __ceph_copy_file_range()
is already ready to cope with short copy.
Move the length capping into splice_file_range() and replace the exported
symbol generic_copy_file_range() with a simple inline helper.
Suggested-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/linux-fsdevel/20231204083849.GC32438@lst.de/
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231212094440.250945-3-amir73il@gmail.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
nfsd/ksmbd call vfs_copy_file_range() with flag COPY_FILE_SPLICE to
perform kernel copy between two files on any two filesystems.
Splicing input file, while holding file_start_write() on the output file
which is on a different sb, posses a risk for fanotify related deadlocks.
We only need to call splice_file_range() from within the context of
->copy_file_range() filesystem methods with file_start_write() held.
To avoid the possible deadlocks, always use do_splice_direct() instead of
splice_file_range() for the kernel copy fallback in vfs_copy_file_range()
without holding file_start_write().
Reported-and-tested-by: Bert Karwatzki <spasswolf@web.de>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231130141624.3338942-4-amir73il@gmail.com
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
The callers of do_splice_direct() hold file_start_write() on the output
file.
This may cause file permission hooks to be called indirectly on an
overlayfs lower layer, which is on the same filesystem of the output
file and could lead to deadlock with fanotify permission events.
To fix this potential deadlock, move file_start_write() from the callers
into the direct_splice_actor(), so file_start_write() will not be held
while splicing from the input file.
Suggested-by: Josef Bacik <josef@toxicpanda.com>
Link: https://lore.kernel.org/r/20231128214258.GA2398475@perftesting/
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231130141624.3338942-3-amir73il@gmail.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
In preparation of calling do_splice_direct() without file_start_write()
held, create a new helper splice_file_range(), to be called from context
of ->copy_file_range() methods instead of do_splice_direct().
Currently, the only difference is that splice_file_range() does not take
flags argument and that it asserts that file_start_write() is held, but
we factor out a common helper do_splice_direct_actor() that will be used
later.
Use the new helper from __ceph_copy_file_range(), that was incorrectly
passing to do_splice_direct() the copy flags argument as splice flags.
The value of copy flags in ceph is always 0, so it is a smenatic bug fix.
Move the declaration of both helpers to linux/splice.h.
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231130141624.3338942-2-amir73il@gmail.com
Acked-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Create new helpers {sb,file}_write_not_started() that can be used
to assert that sb_start_write() is not held.
This is needed for fanotify "pre content" events.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231122122715.2561213-17-amir73il@gmail.com
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Convenience wrapper for sb_write_started(file_inode(inode)->i_sb)), which
has a single occurrence in the code right now.
Document the false negatives of those helpers, which makes them unusable
to assert that sb_start_write() is not held.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231122122715.2561213-16-amir73il@gmail.com
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Similar to sb_write_started() for use by other sb freeze levels.
Unlike the boolean sb_write_started(), this helper returns a tristate
to distiguish the cases of lockdep disabled or unknown lock state.
This is needed for fanotify "pre content" events.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231122122715.2561213-15-amir73il@gmail.com
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
In vfs code, sb_start_write() is usually called after the permission hook
in rw_verify_area(). vfs_iocb_iter_write() is an exception to this rule,
where kiocb_start_write() is called by its callers.
Move kiocb_start_write() from the callers into vfs_iocb_iter_write()
after the rw_verify_area() checks, to make them "start-write-safe".
The semantics of vfs_iocb_iter_write() is changed, so that the caller is
responsible for calling kiocb_end_write() on completion only if async
iocb was queued. The completion handlers of both callers were adapted
to this semantic change.
This is needed for fanotify "pre content" events.
Suggested-by: Jan Kara <jack@suse.cz>
Suggested-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231122122715.2561213-14-amir73il@gmail.com
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
We recently moved fsnotify hook, rw_verify_area() and other checks from
do_iter_write() out to its two callers.
for consistency, do the same thing for do_iter_read() - move the
rw_verify_area() checks and fsnotify hook to the callers vfs_iter_read()
and vfs_readv().
This aligns those vfs helpers with the pattern used in vfs_read() and
vfs_iocb_iter_read() and the vfs write helpers, where all the checks are
in the vfs helpers and the do_* or call_* helpers do the work.
This is needed for fanotify "pre content" events.
Suggested-by: Jan Kara <jack@suse.cz>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231122122715.2561213-13-amir73il@gmail.com
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
In many of the vfs helpers, the rw_verity_area() checks are called before
taking sb_start_write(), making them "start-write-safe".
do_iter_write() is an exception to this rule.
do_iter_write() has two callers - vfs_iter_write() and vfs_writev().
Move rw_verify_area() and other checks from do_iter_write() out to
its callers to make them "start-write-safe".
Move also the fsnotify_modify() hook to align with similar pattern
used in vfs_write() and other vfs helpers.
This is needed for fanotify "pre content" events.
Suggested-by: Jan Kara <jack@suse.cz>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231122122715.2561213-12-amir73il@gmail.com
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
All the callers of vfs_iter_write() call file_start_write() just before
calling vfs_iter_write() except for target_core_file's fd_do_rw().
Move file_start_write() from the callers into vfs_iter_write().
fd_do_rw() calls vfs_iter_write() with a non-regular file, so
file_start_write() is a no-op.
This is needed for fanotify "pre content" events.
Suggested-by: Jan Kara <jack@suse.cz>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231122122715.2561213-11-amir73il@gmail.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
The coda host file is a backing file for the coda inode on a different
filesystem than the coda inode.
Change the locking order to take the coda inode lock before taking
the backing host file freeze protection, same as in ovl_write_iter()
and in network filesystems that use cachefiles.
Link: https://lore.kernel.org/r/CAOQ4uxjcnwuF1gMxe64WLODGA_MyAy8x-DtqkCUxqVQKk3Xbng@mail.gmail.com/
Acked-by: Jan Harkes <jaharkes@cs.cmu.edu>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231122122715.2561213-10-amir73il@gmail.com
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
In vfs code, file_start_write() is usually called after the permission
hook in rw_verify_area(). btrfs_ioctl_encoded_write() in an exception
to this rule.
Move file_start_write() to after the rw_verify_area() check in encoded
write to make the permission hook "start-write-safe".
This is needed for fanotify "pre content" events.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231122122715.2561213-9-amir73il@gmail.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
In vfs code, file_start_write() is usually called after the permission
hook in rw_verify_area(). vfs_dedupe_file_range_one() is an exception
to this rule.
In vfs_dedupe_file_range_one(), move file_start_write() to after the
the rw_verify_area() checks to make them "start-write-safe".
This is needed for fanotify "pre content" events.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231122122715.2561213-8-amir73il@gmail.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
In many of the vfs helpers, file permission hook is called before
taking sb_start_write(), making them "start-write-safe".
do_clone_file_range() is an exception to this rule.
do_clone_file_range() has two callers - vfs_clone_file_range() and
overlayfs. Move remap_verify_area() checks from do_clone_file_range()
out to vfs_clone_file_range() to make them "start-write-safe".
Overlayfs already has calls to rw_verify_area() with the same security
permission hooks as remap_verify_area() has.
The rest of the checks in remap_verify_area() are irrelevant for
overlayfs that calls do_clone_file_range() offset 0 and positive length.
This is needed for fanotify "pre content" events.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231122122715.2561213-7-amir73il@gmail.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
All the callers of ->splice_write(), (e.g. do_splice_direct() and
do_splice()) already check rw_verify_area() for the entire range
and perform all the other checks that are in vfs_write_iter().
Instead of creating another tiny helper for special caller, just
open-code it.
This is needed for fanotify "pre content" events.
Suggested-by: Jan Kara <jack@suse.cz>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231122122715.2561213-6-amir73il@gmail.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
vfs_splice_read() has a permission hook inside rw_verify_area() and
it is called from splice_file_to_pipe(), which is called from
do_splice() and do_sendfile().
do_sendfile() already has a rw_verify_area() check for the entire range.
do_splice() has a rw_verify_check() for the splice to file case, not for
the splice from file case.
Add the rw_verify_area() check for splice from file case in do_splice()
and use a variant of vfs_splice_read() without rw_verify_area() check
in splice_file_to_pipe() to avoid the redundant rw_verify_area() checks.
This is needed for fanotify "pre content" events.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231122122715.2561213-5-amir73il@gmail.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
vfs_splice_read() has a permission hook inside rw_verify_area() and
it is called from do_splice_direct() -> splice_direct_to_actor().
The callers of do_splice_direct() (e.g. vfs_copy_file_range()) already
call rw_verify_area() for the entire range, but the other caller of
splice_direct_to_actor() (nfsd) does not.
Add the rw_verify_area() checks in nfsd_splice_read() and use a
variant of vfs_splice_read() without rw_verify_area() check in
splice_direct_to_actor() to avoid the redundant rw_verify_area() checks.
This is needed for fanotify "pre content" events.
Acked-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231122122715.2561213-4-amir73il@gmail.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
All callers of do_splice_direct() have a call to rw_verify_area() for
the entire range that is being copied, e.g. by vfs_copy_file_range() or
do_sendfile() before calling do_splice_direct().
The rw_verify_area() check inside do_splice_direct() is redundant and
is called after sb_start_write(), so it is not "start-write-safe".
Remove this redundant check.
This is needed for fanotify "pre content" events.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231122122715.2561213-3-amir73il@gmail.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
The main callers of do_splice_direct() also call rw_verify_area() for
the entire range that is being copied, e.g. by vfs_copy_file_range()
or do_sendfile() before calling do_splice_direct().
The only caller that does not have those checks for entire range is
ovl_copy_up_file(). In preparation for removing the checks inside
do_splice_direct(), add rw_verify_area() call in ovl_copy_up_file().
For extra safety, perform minimal sanity checks from rw_verify_area()
for non negative offsets also in the copy up do_splice_direct() loop
without calling the file permission hooks.
This is needed for fanotify "pre content" events.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231122122715.2561213-2-amir73il@gmail.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
The callers of vfs_iter_write() are required to hold file_start_write().
file_start_write() is a no-op for the S_ISBLK() case, but it is really
needed when the backing file is a regular file.
We are going to move file_{start,end}_write() into vfs_iter_write(), but
we need to fix this first, so that the fix could be backported to stable
kernels.
Suggested-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/ZV8ETIpM+wZa33B5@infradead.org/
Cc: <stable@vger.kernel.org>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Link: https://lore.kernel.org/r/20231123092000.2665902-1-amir73il@gmail.com
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Christian Brauner <brauner@kernel.org>
- Include upper 5 address bits of physical address in iitlbp
- Prevent booting 64-bit kernels on PA1.x machines
- parport-gsc: mark init function static
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Merge tag 'parisc-for-6.7-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc architecture fixes from Helge Deller:
- Include the upper 5 address bits when inserting TLB entries on a
64-bit kernel.
On physical machines those are ignored, but in qemu it's nice to have
them included and to be correct.
- Stop the 64-bit kernel and show a warning if someone tries to boot on
a machine with a 32-bit CPU
- Fix a "no previous prototype" warning in parport-gsc
* tag 'parisc-for-6.7-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Prevent booting 64-bit kernels on PA1.x machines
parport: gsc: mark init function static
parisc/pgtable: Do not drop upper 5 address bits of physical address
1, Support PREEMPT_DYNAMIC with static keys;
2, Relax memory ordering for atomic operations;
3, Support BPF CPU v4 instructions for LoongArch;
4, Some build and runtime warning fixes.
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Merge tag 'loongarch-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch updates from Huacai Chen:
- support PREEMPT_DYNAMIC with static keys
- relax memory ordering for atomic operations
- support BPF CPU v4 instructions for LoongArch
- some build and runtime warning fixes
* tag 'loongarch-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
selftests/bpf: Enable cpu v4 tests for LoongArch
LoongArch: BPF: Support signed mod instructions
LoongArch: BPF: Support signed div instructions
LoongArch: BPF: Support 32-bit offset jmp instructions
LoongArch: BPF: Support unconditional bswap instructions
LoongArch: BPF: Support sign-extension mov instructions
LoongArch: BPF: Support sign-extension load instructions
LoongArch: Add more instruction opcodes and emit_* helpers
LoongArch/smp: Call rcutree_report_cpu_starting() earlier
LoongArch: Relax memory ordering for atomic operations
LoongArch: Mark __percpu functions as always inline
LoongArch: Disable module from accessing external data directly
LoongArch: Support PREEMPT_DYNAMIC with static keys
- Finish a refactor of pgprot_framebuffer() which dependend on some changes
that were merged via the drm tree.
- Fix some kernel-doc warnings to quieten the bots.
Thanks to: Nathan Lynch, Thomas Zimmermann.
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Merge tag 'powerpc-6.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- Finish a refactor of pgprot_framebuffer() which dependend
on some changes that were merged via the drm tree
- Fix some kernel-doc warnings to quieten the bots
Thanks to Nathan Lynch and Thomas Zimmermann.
* tag 'powerpc-6.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/rtas: Fix ppc_rtas_rmo_buf_show() kernel-doc
powerpc/pseries/rtas-work-area: Fix rtas_work_area_reserve_arena() kernel-doc
powerpc/fb: Call internal __phys_mem_access_prot() in fbdev code
powerpc: Remove file parameter from phys_mem_access_prot()
powerpc/machdep: Remove trailing whitespaces
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Merge tag '6.7-rc-smb3-client-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client fixes from Steve French:
- ctime caching fix (for setxattr)
- encryption fix
- DNS resolver mount fix
- debugging improvements
- multichannel fixes including cases where server stops or starts
supporting multichannel after mount
- reconnect fix
- minor cleanups
* tag '6.7-rc-smb3-client-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6:
cifs: update internal module version number for cifs.ko
cifs: handle when server stops supporting multichannel
cifs: handle when server starts supporting multichannel
Missing field not being returned in ioctl CIFS_IOC_GET_MNT_INFO
smb3: allow dumping session and tcon id to improve stats analysis and debugging
smb: client: fix mount when dns_resolver key is not available
smb3: fix caching of ctime on setxattr
smb3: minor cleanup of session handling code
cifs: reconnect work should have reference on server struct
cifs: do not pass cifs_sb when trying to add channels
cifs: account for primary channel in the interface list
cifs: distribute channels across interfaces based on speed
cifs: handle cases where a channel is closed
smb3: more minor cleanups for session handling routines
smb3: minor RDMA cleanup
cifs: Fix encryption of cleared, but unset rq_iter data buffers
- Documentation update: Add a note about argument and return value
fetching is the best effort because it depends on the type.
- objpool: Fix to make internal global variables static in
test_objpool.c.
- kprobes: Unify kprobes_exceptions_nofify() prototypes. There are
the same prototypes in asm/kprobes.h for some architectures, but
some of them are missing the prototype and it causes a warning.
So move the prototype into linux/kprobes.h.
- tracing: Fix to check the tracepoint event and return event at
parsing stage. The tracepoint event doesn't support %return
but if $retval exists, it will be converted to %return silently.
This finds that case and rejects it.
- tracing: Fix the order of the descriptions about the parameters
of __kprobe_event_gen_cmd_start() to be consistent with the
argument list of the function.
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Merge tag 'probes-fixes-v6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull probes fixes from Masami Hiramatsu:
- Documentation update: Add a note about argument and return value
fetching is the best effort because it depends on the type.
- objpool: Fix to make internal global variables static in
test_objpool.c.
- kprobes: Unify kprobes_exceptions_nofify() prototypes. There are the
same prototypes in asm/kprobes.h for some architectures, but some of
them are missing the prototype and it causes a warning. So move the
prototype into linux/kprobes.h.
- tracing: Fix to check the tracepoint event and return event at
parsing stage. The tracepoint event doesn't support %return but if
$retval exists, it will be converted to %return silently. This finds
that case and rejects it.
- tracing: Fix the order of the descriptions about the parameters of
__kprobe_event_gen_cmd_start() to be consistent with the argument
list of the function.
* tag 'probes-fixes-v6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing/kprobes: Fix the order of argument descriptions
tracing: fprobe-event: Fix to check tracepoint event and return
kprobes: unify kprobes_exceptions_nofify() prototypes
lib: test_objpool: make global variables static
Documentation: tracing: Add a note about argument and retval access
- fix double free and resource leaks in imsttfb
- lots of remove callback cleanups and section mismatch fixes in omapfb,
amifb and atmel_lcdfb
- error code fix and memparse simplification in omapfb
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Merge tag 'fbdev-for-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev
Pull fbdev fixes and cleanups from Helge Deller:
- fix double free and resource leaks in imsttfb
- lots of remove callback cleanups and section mismatch fixes in
omapfb, amifb and atmel_lcdfb
- error code fix and memparse simplification in omapfb
* tag 'fbdev-for-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev: (31 commits)
fbdev: fsl-diu-fb: mark wr_reg_wa() static
fbdev: amifb: Convert to platform remove callback returning void
fbdev: amifb: Mark driver struct with __refdata to prevent section mismatch warning
fbdev: hyperv_fb: fix uninitialized local variable use
fbdev: omapfb/tpd12s015: Convert to platform remove callback returning void
fbdev: omapfb/tfp410: Convert to platform remove callback returning void
fbdev: omapfb/sharp-ls037v7dw01: Convert to platform remove callback returning void
fbdev: omapfb/opa362: Convert to platform remove callback returning void
fbdev: omapfb/hdmi: Convert to platform remove callback returning void
fbdev: omapfb/dvi: Convert to platform remove callback returning void
fbdev: omapfb/dsi-cm: Convert to platform remove callback returning void
fbdev: omapfb/dpi: Convert to platform remove callback returning void
fbdev: omapfb/analog-tv: Convert to platform remove callback returning void
fbdev: atmel_lcdfb: Convert to platform remove callback returning void
fbdev: omapfb/tpd12s015: Don't put .remove() in .exit.text and drop suppress_bind_attrs
fbdev: omapfb/tfp410: Don't put .remove() in .exit.text and drop suppress_bind_attrs
fbdev: omapfb/sharp-ls037v7dw01: Don't put .remove() in .exit.text and drop suppress_bind_attrs
fbdev: omapfb/opa362: Don't put .remove() in .exit.text and drop suppress_bind_attrs
fbdev: omapfb/hdmi: Don't put .remove() in .exit.text and drop suppress_bind_attrs
fbdev: omapfb/dvi: Don't put .remove() in .exit.text and drop suppress_bind_attrs
...
The order of descriptions should be consistent with the argument list of
the function, so "kretprobe" should be the second one.
int __kprobe_event_gen_cmd_start(struct dynevent_cmd *cmd, bool kretprobe,
const char *name, const char *loc, ...)
Link: https://lore.kernel.org/all/20231031041305.3363712-1-yujie.liu@intel.com/
Fixes: 2a588dd1d5 ("tracing: Add kprobe event command generation functions")
Suggested-by: Mukesh Ojha <quic_mojha@quicinc.com>
Signed-off-by: Yujie Liu <yujie.liu@intel.com>
Reviewed-by: Mukesh Ojha <quic_mojha@quicinc.com>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
- big pile of amd fixes, but mostly hw support newly added in 6.7
- i915 fixes, mostly minor things
- qxl memory leak fix
- vc4 uaf fix in mock helpers
- syncobj fix for DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE
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Merge tag 'drm-next-2023-11-10' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Daniel Vetter:
"Dave's VPN to the big machine died, so it's on me to do fixes pr this
and next week while everyone else is at plumbers.
- big pile of amd fixes, but mostly for hw support newly added in 6.7
- i915 fixes, mostly minor things
- qxl memory leak fix
- vc4 uaf fix in mock helpers
- syncobj fix for DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE"
* tag 'drm-next-2023-11-10' of git://anongit.freedesktop.org/drm/drm: (78 commits)
drm/amdgpu: fix error handling in amdgpu_vm_init
drm/amdgpu: Fix possible null pointer dereference
drm/amdgpu: move UVD and VCE sched entity init after sched init
drm/amdgpu: move kfd_resume before the ip late init
drm/amd: Explicitly check for GFXOFF to be enabled for s0ix
drm/amdgpu: Change WREG32_RLC to WREG32_SOC15_RLC where inst != 0 (v2)
drm/amdgpu: Use correct KIQ MEC engine for gfx9.4.3 (v5)
drm/amdgpu: add smu v13.0.6 pcs xgmi ras error query support
drm/amdgpu: fix software pci_unplug on some chips
drm/amd/display: remove duplicated argument
drm/amdgpu: correct mca debugfs dump reg list
drm/amdgpu: correct acclerator check architecutre dump
drm/amdgpu: add pcs xgmi v6.4.0 ras support
drm/amdgpu: Change extended-scope MTYPE on GC 9.4.3
drm/amdgpu: disable smu v13.0.6 mca debug mode by default
drm/amdgpu: Support multiple error query modes
drm/amdgpu: refine smu v13.0.6 mca dump driver
drm/amdgpu: Do not program PF-only regs in hdp_v4_0.c under SRIOV (v2)
drm/amdgpu: Skip PCTL0_MMHUB_DEEPSLEEP_IB write in jpegv4.0.3 under SRIOV
drm: amd: Resolve Sphinx unexpected indentation warning
...
- Move the MediaTek GIC quirk handling from irqchip to core. Before the
merging window commit 44bd78dd2b ("irqchip/gic-v3: Disable pseudo
NMIs on MediaTek devices w/ firmware issues") temporarily addressed
this issue. Fixed now at a deeper level in the arch code.
- Reject events meant for other PMUs in the CoreSight PMU driver,
otherwise some of the core PMU events would disappear.
- Fix the Armv8 PMUv3 driver driver to not truncate 64-bit registers,
causing some events to be invisible.
- Remove duplicate declaration of __arm64_sys##name following the patch
to avoid prototype warning for syscalls.
- Typos in the elf_hwcap documentation.
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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:
"Mostly PMU fixes and a reworking of the pseudo-NMI disabling on broken
MediaTek firmware:
- Move the MediaTek GIC quirk handling from irqchip to core. Before
the merging window commit 44bd78dd2b ("irqchip/gic-v3: Disable
pseudo NMIs on MediaTek devices w/ firmware issues") temporarily
addressed this issue. Fixed now at a deeper level in the arch code
- Reject events meant for other PMUs in the CoreSight PMU driver,
otherwise some of the core PMU events would disappear
- Fix the Armv8 PMUv3 driver driver to not truncate 64-bit registers,
causing some events to be invisible
- Remove duplicate declaration of __arm64_sys##name following the
patch to avoid prototype warning for syscalls
- Typos in the elf_hwcap documentation"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64/syscall: Remove duplicate declaration
Revert "arm64: smp: avoid NMI IPIs with broken MediaTek FW"
arm64: Move MediaTek GIC quirk handling from irqchip to core
arm64/arm: arm_pmuv3: perf: Don't truncate 64-bit registers
perf: arm_cspmu: Reject events meant for other PMUs
Documentation/arm64: Fix typos in elf_hwcaps
A collection of fixes for RC1. Majority of changes are various
ASoC driver-specific small fixes and usual HD-audio quirks, while
there are a couple of core changes: a fix in ALSA core procfs code
to avoid deadlocks at disconnection and an ASoC core fix for DAPM
clock widgets.
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Merge tag 'sound-fix-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"A collection of fixes for rc1.
The majority of changes are various ASoC driver-specific small fixes
and usual HD-audio quirks, while there are a couple of core changes: a
fix in ALSA core procfs code to avoid deadlocks at disconnection and
an ASoC core fix for DAPM clock widgets"
* tag 'sound-fix-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
OSS: dmasound/paula: Convert to platform remove callback returning void
ALSA: hda: ASUS UM5302LA: Added quirks for cs35L41/10431A83 on i2c bus
ALSA: info: Fix potential deadlock at disconnection
ASoC: nau8540: Add self recovery to improve capture quility
ALSA: hda/realtek: Add support dual speaker for Dell
ALSA: hda: Add ASRock X670E Taichi to denylist
ALSA: hda/realtek: Add quirk for ASUS UX7602ZM
ASoC: SOF: sof-client: trivial: fix comment typo
ASoC: dapm: fix clock get name
ASoC: hdmi-codec: register hpd callback on component probe
ASoC: mediatek: mt8186_mt6366_rt1019_rt5682s: trivial: fix error messages
ASoC: da7219: Improve system suspend and resume handling
ASoC: codecs: Modify macro value error
ASoC: codecs: Modify the wrong judgment of re value
ASoC: codecs: Modify the maximum value of calib
ASoC: amd: acp: fix for i2s mode register field update
ASoC: codecs: aw88399: Fix -Wuninitialized in aw_dev_set_vcalb()
ASoC: rt712-sdca: fix speaker route missing issue
ASoC: rockchip: Fix unused rockchip_i2s_tdm_match warning for !CONFIG_OF
ASoC: ti: omap-mcbsp: Fix runtime PM underflow warnings
A couple of fixes that came in during the merge window, one Kconfig
dependency fix and another fix for a long standing issue where in the
case where a sync transfer races with system suspend.
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Merge tag 'spi-fix-v6.7-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A couple of fixes that came in during the merge window: one Kconfig
dependency fix and another fix for a long standing issue where a sync
transfer races with system suspend"
* tag 'spi-fix-v6.7-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: Fix null dereference on suspend
spi: spi-zynq-qspi: add spi-mem to driver kconfig dependencies
- Fix broken cache-flush support for Micron eMMCs
- Revert "mmc: core: Capture correct oemid-bits for eMMC cards"
MMC host:
- sdhci_am654: Fix TAP value parsing for legacy speed mode
- sdhci-pci-gli: Fix support for ASPM mode for GL9755/GL9750
- vub300: Fix an error path in probe
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Merge tag 'mmc-v6.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:
"MMC core:
- Fix broken cache-flush support for Micron eMMCs
- Revert 'mmc: core: Capture correct oemid-bits for eMMC cards'
MMC host:
- sdhci_am654: Fix TAP value parsing for legacy speed mode
- sdhci-pci-gli: Fix support for ASPM mode for GL9755/GL9750
- vub300: Fix an error path in probe"
* tag 'mmc-v6.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: sdhci-pci-gli: GL9750: Mask the replay timer timeout of AER
mmc: sdhci-pci-gli: GL9755: Mask the replay timer timeout of AER
Revert "mmc: core: Capture correct oemid-bits for eMMC cards"
mmc: vub300: fix an error code
mmc: Add quirk MMC_QUIRK_BROKEN_CACHE_FLUSH for Micron eMMC Q2J54A
mmc: sdhci_am654: fix start loop index for TAP value parsing
This contains two very small fixes that I failed to include in the main
pull request for v6.7-rc1.
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Merge tag 'pwm/for-6.7-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm
Pull pwm fixes from Thierry Reding:
"This contains two very small fixes that I failed to include in the
main pull request"
* tag 'pwm/for-6.7-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
pwm: Fix double shift bug
pwm: samsung: Fix a bit test in pwm_samsung_resume()
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Merge tag 'io_uring-6.7-2023-11-10' of git://git.kernel.dk/linux
Pull io_uring fixes from Jens Axboe:
"Mostly just a few fixes and cleanups caused by the read multishot
support.
Outside of that, a stable fix for how a connect retry is done"
* tag 'io_uring-6.7-2023-11-10' of git://git.kernel.dk/linux:
io_uring: do not clamp read length for multishot read
io_uring: do not allow multishot read to set addr or len
io_uring: indicate if io_kbuf_recycle did recycle anything
io_uring/rw: add separate prep handler for fixed read/write
io_uring/rw: add separate prep handler for readv/writev
io_uring/net: ensure socket is marked connected on connect retry
io_uring/rw: don't attempt to allocate async data if opcode doesn't need it
- Revert a change in ata_pci_shutdown_one() to suspend disks on
shutdown as this is now done using the manage_shutdown scsi device
flag (from me).
- Change the pata_falcon and pata_gayle drivers to stop using
module_platform_driver_probe(). This makes these drivers more inline
with all other drivers (allowing bind/unbind) and suppress a
compilation warning (from Uwe).
- Convert the pata_falcon and pata_gayle drivers to the new
.remove_new() void-return callback. These 2 drivers are the last ones
needing this change (from Uwe).
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Merge tag 'ata-6.7-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata
Pull ata fixes from Damien Le Moal:
- Revert a change in ata_pci_shutdown_one() to suspend disks on
shutdown as this is now done using the manage_shutdown scsi device
flag (me)
- Change the pata_falcon and pata_gayle drivers to stop using
module_platform_driver_probe(). This makes these drivers more inline
with all other drivers (allowing bind/unbind) and suppress a
compilation warning (Uwe)
- Convert the pata_falcon and pata_gayle drivers to the new
.remove_new() void-return callback. These 2 drivers are the last ones
needing this change (Uwe)
* tag 'ata-6.7-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
ata: pata_gayle: Convert to platform remove callback returning void
ata: pata_falcon: Convert to platform remove callback returning void
ata: pata_gayle: Stop using module_platform_driver_probe()
ata: pata_falcon: Stop using module_platform_driver_probe()
ata: libata-core: Fix ata_pci_shutdown_one()
- don't leave pages decrypted for DMA in encrypted memory setups linger
around on failure (Petr Tesarik)
- fix an out of bounds access in the new dynamic swiotlb code (Petr Tesarik)
- fix dma_addressing_limited for systems with weird physical memory layouts
(Jia He)
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Merge tag 'dma-mapping-6.7-2023-11-10' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping fixes from Christoph Hellwig:
- don't leave pages decrypted for DMA in encrypted memory setups linger
around on failure (Petr Tesarik)
- fix an out of bounds access in the new dynamic swiotlb code (Petr
Tesarik)
- fix dma_addressing_limited for systems with weird physical memory
layouts (Jia He)
* tag 'dma-mapping-6.7-2023-11-10' of git://git.infradead.org/users/hch/dma-mapping:
swiotlb: fix out-of-bounds TLB allocations with CONFIG_SWIOTLB_DYNAMIC
dma-mapping: fix dma_addressing_limited() if dma_range_map can't cover all system RAM
dma-mapping: move dma_addressing_limited() out of line
swiotlb: do not free decrypted pages if dynamic
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Merge tag 'lsm-pr-20231109' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm
Pull lsm updates from Paul Moore:
"We've got two small patches to correct the default return
value of two LSM hooks: security_vm_enough_memory_mm() and
security_inode_getsecctx()"
* tag 'lsm-pr-20231109' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm:
lsm: fix default return value for inode_getsecctx
lsm: fix default return value for vm_enough_memory
