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1,445,106 commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Hongling Zeng
|
8a220d1c31 |
cachefiles: Fix error return when vfs_mkdir() fails
When vfs_mkdir() fails, the error code is not extracted from the
returned error pointer. This causes mkdir_error to be reached with
ret=0, which leads to returning ERR_PTR(0) (NULL) instead of a
proper error pointer.
Fix this by extracting the error code from the error pointer when
vfs_mkdir() fails.
Fixes:
|
||
Christian Brauner
|
45205929a3 |
Merge patch series "netfs: Miscellaneous fixes"
David Howells <dhowells@redhat.com> says:
Here are the outstanding miscellaneous fixes for netfslib gathered together
and with some fixes-to-fixes folded down and one rearrangement. Various
Sashiko review comments[1][2][3][4][5] are addressed:
(1) Fix subrequest cancellation cleanup in DIO read and single-read.
(2) Fix missing locking around retry adding new subrequests.
(3) Fix read and write result collection to use barriering correctly to
access a request's subrequest lists without taking a lock.
This adds list_add_tail_release() and
list_first_entry_or_null_acquire() to appropriate incorporate
barriering into some list functions.
(4) Fix netfs_read_to_pagecache() to pause on subrequest I/O failure.
(5) Fix the potential for 64-bit tearing on a 32-bit machine when reading
netfs_inode->remote_i_size and ->zero_point by using much the same
mechanism as is used for ->i_size.
(6) Fix the calculation of zero_point in netfs_release_folio() to limit it
to ->remote_i_size, not ->i_size.
(7) Fix triggering of a VM_BUG_ON_FOLIO() in netfs_write_begin().
(8) Fix a potentially uninitialised error value in
netfs_extract_user_iter().
(9) Fix error handling in netfs_extract_user_iter().
(10) Fix overrun checking in netfs_extract_user_iter().
(11) Fix netfs_invalidate_folio() to clear the folio dirty bit if all dirty
data removed.
(12) Defer the emission of trace_netfs_folio() in netfs_perform_write().
This allows the next patch to emit the correct traces.
(13) Fix the handling of a partially failed copy (ie. EFAULT) into a
streaming write folio. Also remove the netfs_folio if a streaming
write folio is entirely overwritten.
(14) Fix a potential deadlock in writethrough writing.
(15) Fix netfs_read_gaps() to remove the netfs_folio from a filled folio.
(16) Fix netfs_perform_write() to not disable streaming writes when writing
to an fd that's open O_RDWR.
(17) Fix an early put of the sink page used in netfs_read_gaps(), before
the request has completed.
(18) Fix request leak in netfs_write_begin() error handling.
(19) Fix a potential UAF in netfs_unlock_abandoned_read_pages() due to
trying to check index of each folio we're abandoning to see if that
folio is actually owned by the caller (in which case, we're not
actually allowed to dereference it).
(20) Fix incorrect adjustment of dirty region when partially invalidating a
streaming write folio.
(21) Fix the handling of folio->private in netfs_perform_write() and the
attached netfs_folio and/or group when a streaming write folio is
modified.
(22) Fix netfs_read_folio() to wait on writeback first (it holds the folio
lock) otherwise we aren't allowed to look at the netfs_folio struct as
that could be modified at any time by the writeback collector.
(23) Fix write skipping in dir/symlink writepages.
(24) Fix the locking used by afs_get_link().
[1] https://sashiko.dev/#/patchset/20260414082004.3756080-1-dhowells%40redhat.com
[2] https://sashiko.dev/#/patchset/20260326104544.509518-1-dhowells%40redhat.com
[3] https://sashiko.dev/#/patchset/20260425125426.3855807-1-dhowells%40redhat.com
[4] https://sashiko.dev/#/patchset/20260427154639.180684-1-dhowells%40redhat.com
[5] https://sashiko.dev/#/patchset/20260428131756.922303-1-dhowells%40redhat.com
* patches from https://patch.msgid.link/20260512123404.719402-1-dhowells@redhat.com: (24 commits)
afs: Fix the locking used by afs_get_link()
netfs, afs: Fix write skipping in dir/link writepages
netfs: Fix netfs_read_folio() to wait on writeback
netfs: Fix folio->private handling in netfs_perform_write()
netfs: Fix partial invalidation of streaming-write folio
netfs: Fix potential UAF in netfs_unlock_abandoned_read_pages()
netfs: Fix leak of request in netfs_write_begin() error handling
netfs: Fix early put of sink folio in netfs_read_gaps()
netfs: Fix write streaming disablement if fd open O_RDWR
netfs: Fix read-gaps to remove netfs_folio from filled folio
netfs: Fix potential deadlock in write-through mode
netfs: Fix streaming write being overwritten
netfs: Defer the emission of trace_netfs_folio()
netfs: Fix netfs_invalidate_folio() to clear dirty bit if all changes gone
netfs: Fix overrun check in netfs_extract_user_iter()
netfs: fix error handling in netfs_extract_user_iter()
netfs: Fix potential uninitialised var in netfs_extract_user_iter()
netfs: fix VM_BUG_ON_FOLIO() issue in netfs_write_begin() call
netfs: Fix zeropoint update where i_size > remote_i_size
netfs: Fix potential for tearing in ->remote_i_size and ->zero_point
...
Link: https://patch.msgid.link/20260512123404.719402-1-dhowells@redhat.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
|
||
David Howells
|
c0410adf3d |
afs: Fix the locking used by afs_get_link()
The afs filesystem in the kernel doesn't do locking correctly for symbolic
links. There are a number of problems:
(1) It doesn't do any locking around afs_read_single() to prevent races
between multiple ->get_link() calls, thereby allowing the possibility
of leaks.
(2) It doesn't use RCU barriering when accessing the buffer pointers
during RCU pathwalk.
(3) It can race with another thread updating the contents of the symlink
if a third party updated it on the server.
Fix this by the following means:
(0) Move symlink handling into its own file as this makes it more
complicated.
(1) Take the validate_lock around afs_read_single() to prevent races
between multiple ->get_link() calls.
(2) Keep a separate copy of the symlink contents with an rcu_head. This
is always going to be a lot smaller than a page, so it can be
kmalloc'd and save quite a bit of memory. It also needs a refcount
for non-RCU pathwalk.
(3) Split the symlink read and write-to-cache routines in afs from those
for directories.
(4) Discard the I/O buffer as soon as the write-to-cache completes as this
is a full page (plus a folio_queue).
(5) If there's no cache, discard the I/O buffer immediately after reading
and copying if there is no cache.
Fixes:
|
||
|
David Howells
|
9871938f99 |
netfs, afs: Fix write skipping in dir/link writepages
Fix netfs_write_single() and afs_single_writepages() to better handle a
write that would be skipped due to lock contention and WB_SYNC_NONE by
returning 1 from netfs_write_single() if it skipped and making
afs_single_writepages() skip also. If a skip occurs, the inode must be
re-marked as the VFS may have cleared the mark.
This is really only theoretical for directories in netfs_write_single() as
the only path to that is through afs_single_writepages() that takes the
->validate_lock around it, thereby serialising it.
Fixes:
|
||
|
David Howells
|
ded0c6f160 |
netfs: Fix netfs_read_folio() to wait on writeback
Fix netfs_read_folio() to wait for an ongoing writeback to complete so that
it can trust the dirty flag and whatever is attached to folio->private
(folio->private may get cleaned up by the collector before it clears the
writeback flag).
Fixes:
|
||
|
David Howells
|
ccde2ac757 |
netfs: Fix folio->private handling in netfs_perform_write()
Under some circumstances, netfs_perform_write() doesn't correctly
manipulate folio->private between NULL, NETFS_FOLIO_COPY_TO_CACHE, pointing
to a group and pointing to a netfs_folio struct, leading to potential
multiple attachments of private data with associated folio ref leaks and
also leaks of netfs_folio structs or netfs_group refs.
Fix this by consolidating the place at which a folio is marked uptodate in
one place and having that look at what's attached to folio->private and
decide how to clean it up and then set the new group. Also, the content
shouldn't be flushed if group is NULL, even if a group is specified in the
netfs_group parameter, as that would be the case for a new folio. A
filesystem should always specify netfs_group or never specify netfs_group.
The Sashiko auto-review tool noted that it was theoretically possible that
the fpos >= ctx->zero_point section might leak if it modified a streaming
write folio. This is unlikely, but with a network filesystem, third party
changes can happen. It also pointed out that __netfs_set_group() would
leak if called multiple times on the same folio from the "whole folio
modify section".
Fixes:
|
||
|
David Howells
|
6d91acc7fb |
netfs: Fix partial invalidation of streaming-write folio
In netfs_invalidate_folio(), if the region of a partial invalidation
overlaps the front (but not all) of a dirty write cached in a streaming
write page (dirty, but not uptodate, with the dirty region tracked by a
netfs_folio struct), the function modifies the dirty region - but
incorrectly as it moves the region forward by setting the start to the
start, not the end, of the invalidation region.
Fix this by setting finfo->dirty_offset to the end of the invalidation
region (iend).
Fixes:
|
||
|
David Howells
|
dbe5569721 |
netfs: Fix potential UAF in netfs_unlock_abandoned_read_pages()
netfs_unlock_abandoned_read_pages(rreq) accesses the index of the folios it
is wanting to unlock and compares that to rreq->no_unlock_folio so that it
doesn't unlock a folio being read for netfs_perform_write() or
netfs_write_begin().
However, given that netfs_unlock_abandoned_read_pages() is called _after_
NETFS_RREQ_IN_PROGRESS is cleared, the one folio that it's not allowed to
dereference is the one specified by ->no_unlock_folio as ownership
immediately reverts to the caller.
Fix this by storing the folio pointer instead and using that rather than
the index. Also fix netfs_unlock_read_folio() where the same applies.
Fixes:
|
||
|
David Howells
|
5046a34f06 |
netfs: Fix leak of request in netfs_write_begin() error handling
Fix netfs_write_begin() to not leak our ref on the request in the event
that we get an error from netfs_wait_for_read().
Fixes:
|
||
|
David Howells
|
3e5dd91b87 |
netfs: Fix early put of sink folio in netfs_read_gaps()
Fix netfs_read_gaps() to release the sink page it uses after waiting for
the request to complete. The way the sink page is used is that an
ITER_BVEC-class iterator is created that has the gaps from the target folio
at either end, but has the sink page tiled over the middle so that a single
read op can fill in both gaps.
The bug was found by KASAN detecting a UAF on the generic/075 xfstest in
the cifsd kernel thread that handles reception of data from the TCP socket:
BUG: KASAN: use-after-free in _copy_to_iter+0x48a/0xa20
Write of size 885 at addr ffff888107f92000 by task cifsd/1285
CPU: 2 UID: 0 PID: 1285 Comm: cifsd Not tainted 7.0.0 #6 PREEMPT(lazy)
Call Trace:
dump_stack_lvl+0x5d/0x80
print_report+0x17f/0x4f1
kasan_report+0x100/0x1e0
kasan_check_range+0x10f/0x1e0
__asan_memcpy+0x3c/0x60
_copy_to_iter+0x48a/0xa20
__skb_datagram_iter+0x2c9/0x430
skb_copy_datagram_iter+0x6e/0x160
tcp_recvmsg_locked+0xce0/0x1130
tcp_recvmsg+0xeb/0x300
inet_recvmsg+0xcf/0x3a0
sock_recvmsg+0xea/0x100
cifs_readv_from_socket+0x3a6/0x4d0 [cifs]
cifs_read_iter_from_socket+0xdd/0x130 [cifs]
cifs_readv_receive+0xaad/0xb10 [cifs]
cifs_demultiplex_thread+0x1148/0x1740 [cifs]
kthread+0x1cf/0x210
Fixes:
|
||
|
David Howells
|
70a7b9193b |
netfs: Fix write streaming disablement if fd open O_RDWR
In netfs_perform_write(), "write streaming" (the caching of dirty data in
dirty but !uptodate folios) is performed to avoid the need to read data
that is just going to get immediately overwritten. However, this is/will
be disabled in three circumstances: if the fd is open O_RDWR, if fscache is
in use (as we need to round out the blocks for DIO) or if content
encryption is enabled (again for rounding out purposes).
The idea behind disabling it if the fd is open O_RDWR is that we'd need to
flush the write-streaming page before we could read the data, particularly
through mmap. But netfs now fills in the gaps if ->read_folio() is called
on the page, so that is unnecessary. Further, this doesn't actually work
if a separate fd is open for reading.
Fix this by removing the check for O_RDWR, thereby allowing streaming
writes even when we might read.
This caused a number of problems with the generic/522 xfstest, but those
are now fixed.
Fixes:
|
||
|
David Howells
|
a41168aef6 |
netfs: Fix read-gaps to remove netfs_folio from filled folio
Fix netfs_read_gaps() to remove the netfs_folio record from the folio
record before marking the folio uptodate if it successfully fills the gaps
around the dirty data in a streaming write folio (dirty, but not uptodate).
Found with:
fsx -q -N 1000000 -p 10000 -o 128000 -l 600000 \
/xfstest.test/junk --replay-ops=junk.fsxops
using the following as junk.fsxops:
truncate 0x0 0x138b1 0x8b15d *
write 0x507ee 0x10df7 0x927c0
write 0x19993 0x10e04 0x927c0 *
mapwrite 0x66214 0x1a253 0x927c0
copy_range 0xb704 0x89b9 0x24429 0x79380
write 0x2402b 0x144a2 0x90660 *
mapwrite 0x204d5 0x140a0 0x927c0 *
copy_range 0x1f72c 0x137d0 0x7a906 0x927c0 *
read 0 0x9157c 0x9157c
on cifs with the default cache option.
It shows folio 0x24 misbehaving if the FMODE_READ check is commented out in
netfs_perform_write():
if (//(file->f_mode & FMODE_READ) ||
netfs_is_cache_enabled(ctx)) {
and no fscache. This was initially found with the generic/522 xfstest.
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://patch.msgid.link/20260512123404.719402-16-dhowells@redhat.com
Fixes:
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|
David Howells
|
b6a4ae1634 |
netfs: Fix potential deadlock in write-through mode
Fix netfs_advance_writethrough() to always unlock the supplied folio and to
mark it dirty if it isn't yet written to the end. Unfortunately, it can't
be marked for writeback until the folio is done with as that may cause a
deadlock against mmapped reads and writes.
Even though it has been marked dirty, premature writeback can't occur as
the caller is holding both inode->i_rwsem (which will prevent concurrent
truncation, fallocation, DIO and other writes) and ictx->wb_lock (which
will cause flushing to wait and writeback to skip or wait).
Note that this may be easier to deal with once the queuing of folios is
split from the generation of subrequests.
Fixes:
|
||
|
David Howells
|
7b4dcf1b94 |
netfs: Fix streaming write being overwritten
In order to avoid reading whilst writing, netfslib will allow "streaming
writes" in which dirty data is stored directly into folios without reading
them first. Such folios are marked dirty but may not be marked uptodate.
If a folio is entirely written by a streaming write, uptodate will be set,
otherwise it will have a netfs_folio struct attached to ->private recording
the dirty region.
In the event that a partially written streaming write page is to be
overwritten entirely by a single write(), netfs_perform_write() will try to
copy over it, but doesn't discard the netfs_folio if it succeeds; further,
it doesn't correctly handle a partial copy that overwrites some of the
dirty data.
Fix this by the following:
(1) If the folio is successfully overwritten, free the netfs_folio struct
before marking the page uptodate.
(2) If the copy to the folio partially fails, but short of the dirty data,
just ignore the copy.
(3) If the copy partially fails and overwrites some of the dirty data,
accept the copy, update the netfs_folio struct to record the new data.
If the folio is now filled, free the netfs_folio and set uptodate,
otherwise return a partial write.
Found with:
fsx -q -N 1000000 -p 10000 -o 128000 -l 600000 \
/xfstest.test/junk --replay-ops=junk.fsxops
using the following as junk.fsxops:
truncate 0x0 0 0x927c0
write 0x63fb8 0x53c8 0
copy_range 0xb704 0x19b9 0x24429 0x79380
write 0x2402b 0x144a2 0x90660 *
write 0x204d5 0x140a0 0x927c0 *
copy_range 0x1f72c 0x137d0 0x7a906 0x927c0 *
read 0x00000 0x20000 0x9157c
read 0x20000 0x20000 0x9157c
read 0x40000 0x20000 0x9157c
read 0x60000 0x20000 0x9157c
read 0x7e1a0 0xcfb9 0x9157c
on cifs with the default cache option.
It shows folio 0x24 misbehaving if the FMODE_READ check is commented out in
netfs_perform_write():
if (//(file->f_mode & FMODE_READ) ||
netfs_is_cache_enabled(ctx)) {
and no fscache. This was initially found with the generic/522 xfstest.
Fixes:
|
||
|
David Howells
|
daeb443b92 |
netfs: Defer the emission of trace_netfs_folio()
Change netfs_perform_write() to keep the netfs_folio trace value in a variable and emit it later to make it easier to choose the value displayed. This is a prerequisite for a subsequent patch. Closes: https://sashiko.dev/#/patchset/20260414082004.3756080-1-dhowells%40redhat.com Signed-off-by: David Howells <dhowells@redhat.com> Link: https://patch.msgid.link/20260512123404.719402-13-dhowells@redhat.com cc: Paulo Alcantara <pc@manguebit.org> cc: Matthew Wilcox <willy@infradead.org> cc: netfs@lists.linux.dev cc: linux-fsdevel@vger.kernel.org Signed-off-by: Christian Brauner <brauner@kernel.org> |
||
|
David Howells
|
156ac2ec2e |
netfs: Fix netfs_invalidate_folio() to clear dirty bit if all changes gone
If a streaming write is made, this will leave the relevant modified folio
in a not-uptodate, but dirty state with a netfs_folio struct hung off of
folio->private indicating the dirty range. Subsequently truncating the
file such that the dirty data in the folio is removed, but the first part
of the folio theoretically remains will cause the netfs_folio struct to be
discarded... but will leave the dirty flag set.
If the folio is then read via mmap(), netfs_read_folio() will see that the
page is dirty and jump to netfs_read_gaps() to fill in the missing bits.
netfs_read_gaps(), however, expects there to be a netfs_folio struct
present and can oops because truncate removed it.
Fix this by calling folio_cancel_dirty() in netfs_invalidate_folio() in the
event that all the dirty data in the folio is erased (as nfs does).
Also add some tracepoints to log modifications to a dirty page.
This can be reproduced with something like:
dd if=/dev/zero of=/xfstest.test/foo bs=1M count=1
umount /xfstest.test
mount /xfstest.test
xfs_io -c "w 0xbbbf 0xf96c" \
-c "truncate 0xbbbf" \
-c "mmap -r 0xb000 0x11000" \
-c "mr 0xb000 0x11000" \
/xfstest.test/foo
with fscaching disabled (otherwise streaming writes are suppressed) and a
change to netfs_perform_write() to disallow streaming writes if the fd is
open O_RDWR:
if (//(file->f_mode & FMODE_READ) || <--- comment this out
netfs_is_cache_enabled(ctx)) {
It should be reproducible even without this change, but if prevents the
above trivial xfs_io command from reproducing it.
Note that the initial dd is important: the file must start out sufficiently
large that the zero-point logic doesn't just clear the gaps because it
knows there's nothing in the file to read yet. Unmounting and mounting is
needed to clear the pagecache (there are other ways to do that that may
also work).
This was initially reproduced with the generic/522 xfstest on some patches
that remove the FMODE_READ restriction.
Fixes:
|
||
|
David Howells
|
0ef37eef83 |
netfs: Fix overrun check in netfs_extract_user_iter()
Fix netfs_extract_user_iter() so that if iov_iter_extract_pages() overfills
pages[], then those pages don't get included in the iterator constructed at
the end of the function. If there was an overfill, memory corruption has
already happened.
Fixes:
|
||
Paulo Alcantara
|
0aad5704c6 |
netfs: fix error handling in netfs_extract_user_iter()
In netfs_extract_user_iter(), if iov_iter_extract_pages() failed to
extract user pages, bail out on -ENOMEM, otherwise return the error
code only if @npages == 0, allowing short DIO reads and writes to be
issued.
This fixes mmapstress02 from LTP tests against CIFS.
Fixes:
|
||
|
David Howells
|
7e3d8db899 |
netfs: Fix potential uninitialised var in netfs_extract_user_iter()
In netfs_extract_user_iter(), if it's given a zero-length iterator, it will
fall through the loop without setting ret, and so the error handling
behaviour will be undefined, depending on whether ret happens to be
negative. The value of ret then propagates back up the callstack.
Fix this by presetting ret to 0.
Fixes:
|
||
Viacheslav Dubeyko
|
dc7832d05d |
netfs: fix VM_BUG_ON_FOLIO() issue in netfs_write_begin() call
The multiple runs of generic/013 test-case is capable
to reproduce a kernel BUG at mm/filemap.c:1504 with
probability of 30%.
while true; do
sudo ./check generic/013
done
[ 9849.452376] page: refcount:3 mapcount:0 mapping:00000000e58ff252 index:0x10781 pfn:0x1c322
[ 9849.452412] memcg:ffff8881a1915800
[ 9849.452417] aops:ceph_aops ino:1000058db9e dentry name(?):"f9XXXXXX"
[ 9849.452432] flags: 0x17ffffc0000000(node=0|zone=2|lastcpupid=0x1fffff)
[ 9849.452441] raw: 0017ffffc0000000 0000000000000000 dead000000000122 ffff88816110d248
[ 9849.452445] raw: 0000000000010781 0000000000000000 00000003ffffffff ffff8881a1915800
[ 9849.452447] page dumped because: VM_BUG_ON_FOLIO(!folio_test_locked(folio))
[ 9849.452474] ------------[ cut here ]------------
[ 9849.452476] kernel BUG at mm/filemap.c:1504!
[ 9849.478635] Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
[ 9849.481772] CPU: 2 UID: 0 PID: 84223 Comm: fsstress Not tainted 7.0.0-rc1+ #18 PREEMPT(full)
[ 9849.482881] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.17.0-9.fc43 06/1
0/2025
[ 9849.484539] RIP: 0010:folio_unlock+0x85/0xa0
[ 9849.485076] Code: 89 df 31 f6 e8 1c f3 ff ff 48 8b 5d f8 c9 31 c0 31 d2 31 f6 31 ff c3 cc
cc cc cc 48 c7 c6 80 6c d9 a7 48 89 df e8 4b b3 10 00 <0f> 0b 48 89 df e8 21 e6 2c 00 eb 9d 0f 1f 40 00 66 66 2e 0f 1f 84
[ 9849.493818] RSP: 0018:ffff8881bb8076b0 EFLAGS: 00010246
[ 9849.495740] RAX: 0000000000000000 RBX: ffffea00070c8980 RCX: 0000000000000000
[ 9849.498678] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 9849.500559] RBP: ffff8881bb8076b8 R08: 0000000000000000 R09: 0000000000000000
[ 9849.501097] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000010782000
[ 9849.502108] R13: ffff8881935de738 R14: ffff88816110d010 R15: 0000000000001000
[ 9849.502516] FS: 00007e36cbe94740(0000) GS:ffff88824a899000(0000) knlGS:0000000000000000
[ 9849.502996] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9849.503810] CR2: 000000c0002b0000 CR3: 000000011bbf6004 CR4: 0000000000772ef0
[ 9849.504459] PKRU: 55555554
[ 9849.504626] Call Trace:
[ 9849.505242] <TASK>
[ 9849.505379] netfs_write_begin+0x7c8/0x10a0
[ 9849.505877] ? __kasan_check_read+0x11/0x20
[ 9849.506384] ? __pfx_netfs_write_begin+0x10/0x10
[ 9849.507178] ceph_write_begin+0x8c/0x1c0
[ 9849.507934] generic_perform_write+0x391/0x8f0
[ 9849.508503] ? __pfx_generic_perform_write+0x10/0x10
[ 9849.509062] ? file_update_time_flags+0x19a/0x4b0
[ 9849.509581] ? ceph_get_caps+0x63/0xf0
[ 9849.510259] ? ceph_get_caps+0x63/0xf0
[ 9849.510530] ceph_write_iter+0xe79/0x1ae0
[ 9849.511282] ? __pfx_ceph_write_iter+0x10/0x10
[ 9849.511839] ? lock_acquire+0x1ad/0x310
[ 9849.512334] ? ksys_write+0xf9/0x230
[ 9849.512582] ? lock_is_held_type+0xaa/0x140
[ 9849.513128] vfs_write+0x512/0x1110
[ 9849.513634] ? __fget_files+0x33/0x350
[ 9849.513893] ? __pfx_vfs_write+0x10/0x10
[ 9849.514143] ? mutex_lock_nested+0x1b/0x30
[ 9849.514394] ksys_write+0xf9/0x230
[ 9849.514621] ? __pfx_ksys_write+0x10/0x10
[ 9849.514887] ? do_syscall_64+0x25e/0x1520
[ 9849.515122] ? __kasan_check_read+0x11/0x20
[ 9849.515366] ? trace_hardirqs_on_prepare+0x178/0x1c0
[ 9849.515655] __x64_sys_write+0x72/0xd0
[ 9849.515885] ? trace_hardirqs_on+0x24/0x1c0
[ 9849.516130] x64_sys_call+0x22f/0x2390
[ 9849.516341] do_syscall_64+0x12b/0x1520
[ 9849.516545] ? do_syscall_64+0x27c/0x1520
[ 9849.516783] ? do_syscall_64+0x27c/0x1520
[ 9849.517003] ? lock_release+0x318/0x480
[ 9849.517220] ? __x64_sys_io_getevents+0x143/0x2d0
[ 9849.517479] ? percpu_ref_put_many.constprop.0+0x8f/0x210
[ 9849.517779] ? entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 9849.518073] ? do_syscall_64+0x25e/0x1520
[ 9849.518291] ? __kasan_check_read+0x11/0x20
[ 9849.518519] ? trace_hardirqs_on_prepare+0x178/0x1c0
[ 9849.518799] ? do_syscall_64+0x27c/0x1520
[ 9849.519024] ? local_clock_noinstr+0xf/0x120
[ 9849.519262] ? entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 9849.519544] ? do_syscall_64+0x25e/0x1520
[ 9849.519781] ? __kasan_check_read+0x11/0x20
[ 9849.520008] ? trace_hardirqs_on_prepare+0x178/0x1c0
[ 9849.520273] ? do_syscall_64+0x27c/0x1520
[ 9849.520491] ? trace_hardirqs_on_prepare+0x178/0x1c0
[ 9849.520767] ? irqentry_exit+0x10c/0x6c0
[ 9849.520984] ? trace_hardirqs_off+0x86/0x1b0
[ 9849.521224] ? exc_page_fault+0xab/0x130
[ 9849.521472] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 9849.521766] RIP: 0033:0x7e36cbd14907
[ 9849.521989] Code: 10 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
[ 9849.523057] RSP: 002b:00007ffff2d2a968 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 9849.523484] RAX: ffffffffffffffda RBX: 000000000000e549 RCX: 00007e36cbd14907
[ 9849.523885] RDX: 000000000000e549 RSI: 00005bd797ec6370 RDI: 0000000000000004
[ 9849.524277] RBP: 0000000000000004 R08: 0000000000000047 R09: 00005bd797ec6370
[ 9849.524652] R10: 0000000000000078 R11: 0000000000000246 R12: 0000000000000049
[ 9849.525062] R13: 0000000010781a37 R14: 00005bd797ec6370 R15: 0000000000000000
[ 9849.525447] </TASK>
[ 9849.525574] Modules linked in: intel_rapl_msr intel_rapl_common intel_uncore_frequency_common intel_pmc_core pmt_telemetry pmt_discovery pmt_class intel_pmc_ssram_telemetry intel_vsec kvm_intel joydev kvm irqbypass ghash_clmulni_intel aesni_intel input_leds rapl mac_hid psmouse vga16fb serio_raw vgastate floppy i2c_piix4 bochs qemu_fw_cfg i2c_smbus pata_acpi sch_fq_codel rbd msr parport_pc ppdev lp parport efi_pstore
[ 9849.529150] ---[ end trace 0000000000000000 ]---
[ 9849.529502] RIP: 0010:folio_unlock+0x85/0xa0
[ 9849.530813] Code: 89 df 31 f6 e8 1c f3 ff ff 48 8b 5d f8 c9 31 c0 31 d2 31 f6 31 ff c3 cc cc cc cc 48 c7 c6 80 6c d9 a7 48 89 df e8 4b b3 10 00 <0f> 0b 48 89 df e8 21 e6 2c 00 eb 9d 0f 1f 40 00 66 66 2e 0f 1f 84
[ 9849.534986] RSP: 0018:ffff8881bb8076b0 EFLAGS: 00010246
[ 9849.536198] RAX: 0000000000000000 RBX: ffffea00070c8980 RCX: 0000000000000000
[ 9849.537718] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 9849.539321] RBP: ffff8881bb8076b8 R08: 0000000000000000 R09: 0000000000000000
[ 9849.540862] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000010782000
[ 9849.542438] R13: ffff8881935de738 R14: ffff88816110d010 R15: 0000000000001000
[ 9849.543996] FS: 00007e36cbe94740(0000) GS:ffff88824b899000(0000) knlGS:0000000000000000
[ 9849.545854] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9849.547092] CR2: 00007e36cb3ff000 CR3: 000000011bbf6006 CR4: 0000000000772ef0
[ 9849.548679] PKRU: 55555554
The race sequence:
1. Read completes -> netfs_read_collection() runs
2. netfs_wake_rreq_flag(rreq, NETFS_RREQ_IN_PROGRESS, ...)
3. netfs_wait_for_read() returns -EFAULT to netfs_write_begin()
4. The netfs_unlock_abandoned_read_pages() unlocks the folio
5. netfs_write_begin() calls folio_unlock(folio) -> VM_BUG_ON_FOLIO()
The key reason of the issue that netfs_unlock_abandoned_read_pages()
doesn't check the flag NETFS_RREQ_NO_UNLOCK_FOLIO and executes
folio_unlock() unconditionally. This patch implements in
netfs_unlock_abandoned_read_pages() logic similar to
netfs_unlock_read_folio().
Fixes:
|
||
|
David Howells
|
4543a4d737 |
netfs: Fix zeropoint update where i_size > remote_i_size
Fix the update of the zero point[*] by netfs_release_folio() when there is
uncommitted data in the pagecache beyond the folio being released but the
on-server EOF is in this folio (ie. i_size > remote_i_size). The update
needs to limit zero_point to remote_i_size, not i_size as i_size is a local
phenomenon reflecting updates made locally to the pagecache, not stuff
written to the server. remote_i_size tracks the server's i_size.
[*] The zero point is the file position from which we can assume that the
server will just return zeros, so we can avoid generating reads.
Note that netfs_invalidate_folio() probably doesn't need fixing as
zero_point should be updated by setattr after truncation or fallocate.
Found with:
fsx -q -N 1000000 -p 10000 -o 128000 -l 600000 \
/xfstest.test/junk --replay-ops=junk.fsxops
using the following as junk.fsxops:
truncate 0x0 0x1bbae 0x82864
write 0x3ef2e 0xf9c8 0x1bbae
write 0x67e05 0xcb5a 0x4e8f6
mapread 0x57781 0x85b6 0x7495f
copy_range 0x5d3d 0x10329 0x54fac 0x7495f
write 0x64710 0x1c2b 0x7495f
mapread 0x64000 0x1000 0x7495f
on cifs with the default cache option.
It shows read-gaps on folio 0x64 failing with a short read (ie. it hits
EOF) if the FMODE_READ check is commented out in netfs_perform_write():
if (//(file->f_mode & FMODE_READ) ||
netfs_is_cache_enabled(ctx)) {
and no fscache. This was initially found with the generic/522 xfstest.
Fixes:
|
||
|
David Howells
|
2c8f4742bb |
netfs: Fix potential for tearing in ->remote_i_size and ->zero_point
Fix potential tearing in using ->remote_i_size and ->zero_point by copying i_size_read() and i_size_write() and using the same seqcount as for i_size. We need to make sure that netfslib and the filesystems that use it always hold i_lock whilst updating any of the sizes to prevent i_size_seqcount from getting corrupted. Fixes: |
||
|
David Howells
|
8a8c0cfdf4 |
netfs: Fix netfs_read_to_pagecache() to pause on subreq failure
Fix netfs_read_to_pagecache() so that it pauses the generation of new
subrequests if an already-issued subrequest fails.
Fixes:
|
||
|
David Howells
|
b5782e2d46 |
netfs: Fix missing barriers when accessing stream->subrequests locklessly
The list of subrequests attached to stream->subrequests is accessed without
locks by netfs_collect_read_results() and netfs_collect_write_results(),
and then they access subreq->flags without taking a barrier after getting
the subreq pointer from the list. Relatedly, the functions that build the
list don't use any sort of write barrier when constructing the list to make
sure that the NETFS_SREQ_IN_PROGRESS flag is perceived to be set first if
no lock is taken.
Fix this by:
(1) Add a new list_add_tail_release() function that uses a release barrier
to set the pointer to the new member of the list.
(2) Add a new list_first_entry_or_null_acquire() function that uses an
acquire barrier to read the pointer to the first member in a list (or
return NULL).
(3) Use list_add_tail_release() when adding a subreq to ->subrequests.
(4) Use list_first_entry_or_null_acquire() when initially accessing the
front of the list (when an item is removed, the pointer to the new
front iterm is obtained under the same lock).
Fixes:
|
||
|
David Howells
|
cce18c263e |
netfs: Fix missing locking around retry adding new subreqs
Fix netfs_retry_read_subrequests() and netfs_retry_write_stream() to take the appropriate lock when adding extra subrequests into stream->subrequests. Fixes: |
||
|
David Howells
|
6f0f7ac191 |
netfs: Fix cancellation of a DIO and single read subrequests
When the preparation of a new subrequest for a read fails, if the
subrequest has already been added to the stream->subrequests list, it can't
simply be put and abandoned as the collector may see it. Also, if it
hasn't been queued yet, it has two outstanding refs that both need to be
put. Both DIO read and single-read dispatch fail at this; further, both
differ in the order they do things to the way buffered read works.
Fix cancellation of both DIO-read and single-read subrequests that failed
preparation by the following steps:
(1) Harmonise all three reads (buffered, dio, single) to queue the subreq
before prepping it.
(2) Make all three call netfs_queue_read() to do the queuing.
(3) Set NETFS_RREQ_ALL_QUEUED independently of the queuing as we don't
know the length of the subreq at this point.
(4) In all cases, set the error and NETFS_SREQ_FAILED flag on the subreq
and then call netfs_read_subreq_terminated() to deal with it. This
will pass responsibility off to the collector for dealing with it.
Fixes:
|
||
Breno Leitao
|
859c199bb3 |
fs/select: reject negative timeval components in kern_select()
kern_select() normalises the user-supplied struct __kernel_old_timeval
with
tv.tv_sec + (tv.tv_usec / USEC_PER_SEC)
(tv.tv_usec % USEC_PER_SEC) * NSEC_PER_USEC
before calling poll_select_set_timeout() -> timespec64_valid(). Both
operands of the seconds sum are unbounded user-controlled signed long.
A crafted pair where tv_usec is a negative multiple of USEC_PER_SEC
drives the sum across the wrap boundary - e.g.
{ .tv_sec = LONG_MIN, .tv_usec = -1000000 }
yields sec = LONG_MAX, nsec = 0, which passes timespec64_valid() and
then flows through timespec64_add_safe(), which saturates the absolute
deadline to TIME64_MAX (clamped further to KTIME_MAX downstream).
select(2) therefore blocks effectively forever instead of returning
-EINVAL as POSIX requires for a negative timeout.
Only the legacy __NR_select syscall takes this path. pselect6, ppoll,
poll and epoll_pwait2 all hand the user's two fields directly to
poll_select_set_timeout(), which validates *before* doing any
arithmetic:
/* fs/select.c:271 -- the validator */
int poll_select_set_timeout(struct timespec64 *to, time64_t sec, long nsec)
{
struct timespec64 ts = {.tv_sec = sec, .tv_nsec = nsec};
if (!timespec64_valid(&ts))
return -EINVAL;
...
}
/* include/linux/time64.h:97 -- timespec64_valid */
if (ts->tv_sec < 0) return false;
if ((unsigned long)ts->tv_nsec >= NSEC_PER_SEC) return false;
/* fs/select.c:744 do_pselect() (pselect6, pselect6_time32) */
if (get_timespec64(&ts, tsp)) return -EFAULT;
if (poll_select_set_timeout(to, ts.tv_sec, ts.tv_nsec)) return -EINVAL;
/* fs/select.c:1097 ppoll */
if (get_timespec64(&ts, tsp)) return -EFAULT;
if (poll_select_set_timeout(to, ts.tv_sec, ts.tv_nsec)) return -EINVAL;
/* fs/select.c:1065 poll -- timeout_msecs is int; >= 0 gates the math */
if (timeout_msecs >= 0)
poll_select_set_timeout(to, timeout_msecs / MSEC_PER_SEC,
NSEC_PER_MSEC * (timeout_msecs % MSEC_PER_SEC));
/* fs/eventpoll.c:2512 epoll_pwait2 */
if (get_timespec64(&ts, timeout)) return -EFAULT;
if (poll_select_set_timeout(to, ts.tv_sec, ts.tv_nsec)) return -EINVAL;
In every one of these the wrap-prone arithmetic from kern_select()
simply does not exist; the user fields reach timespec64_valid()
unmodified. glibc routes the C-library select() through pselect6,
so the bug is reachable only via a direct syscall(__NR_select, ...).
The pre-validation negative check that used to live here was lost
when the syscall was switched to the poll_select_set_timeout() helper.
Restore it: reject tv_sec < 0 || tv_usec < 0 up front, mirroring what
glibc does in userspace. do_compat_select() has the same arithmetic
pattern but is only reachable on 32-bit compat and from a different
syscall entry; left for a follow-up so this change stays minimal.
Reproducer (returns -1/EINVAL on a fixed kernel; blocks indefinitely
on an unfixed one):
struct timeval tv = { .tv_sec = LONG_MIN, .tv_usec = -1000000 };
fd_set r;
int pfd[2];
pipe(pfd);
FD_ZERO(&r);
FD_SET(pfd[0], &r);
syscall(__NR_select, pfd[0] + 1, &r, NULL, NULL, &tv);
Fixes:
|
||
Zhihao Cheng
|
725ecd8068 |
nsfs: fix wrong error code returned for pidns ioctls
When executing NS_GET_PID_FROM_PIDNS (or similar pidns ioctls), if the
target task cannot be found in the corresponding pid_ns, the error code
should be ESRCH instead of ENOTTY.
This bug was introduced when the extensible ioctl handling was added.
Without proper return, ret would be overwritten by the default case in
the extensible ioctl switch statement.
Fixes:
|
||
Pankaj Raghav
|
834e98acb7 |
fs: fix forced iversion increment on lazytime timestamp updates
When updating timestamps with lazytime enabled, if only I_DIRTY_TIME is
set (pure lazytime update), inode_maybe_inc_iversion() should not be
forced to increment i_version. The force parameter should only be true
when actual data or metadata changes require an iversion bump.
The current code uses "!!dirty" which evaluates to true whenever dirty
has any bits set, including the I_DIRTY_TIME bit alone. This forces an
iversion increment on every lazytime timestamp update, which then sets
I_DIRTY_SYNC, triggering expensive log flushes on subsequent fdatasync
calls. Andres reported this issue when he noticed a perf regression[1].
Fix this by using "dirty != I_DIRTY_TIME" as the force parameter. This
passes false for pure lazytime updates (allowing the I_VERSION_QUERIED
optimization to work), while still forcing the increment when dirty
contains other flags indicating real changes that require iversion
updates.
[1] https://lore.kernel.org/linux-xfs/7ys6erh3nnyeerv2nybyfvp7dmaknuxrlxv74wx56ocdothkc6@ekfiadtkfn2r/
Fixes:
|
||
Junxi Qian
|
c3880a7b10 |
fuse: fix writeback array overflow when max_pages is one
fuse_iomap_writeback_range() appends one folio pointer and one
fuse_folio_desc for every dirty range that is merged into the current
writeback request. The merge decision checks the byte budget against
fc->max_pages and fc->max_write, but it does not check whether the folio
and descriptor arrays still have another free slot.
This is not sufficient for fuseblk, where the filesystem block size can
be smaller than PAGE_SIZE. With writeback cache enabled and max_pages
negotiated as one, contiguous sub-page dirty ranges can fit within the
byte budget while spanning more than one folio. The next append can then
write past the one-slot folios and descs arrays.
Split the request when the number of already attached folios has reached
fc->max_pages. This keeps the folio/descriptor slot accounting in sync
with the send decision.
Fixes:
|
||
|
Hongling Zeng
|
a7cf1da7ac |
fs: Fix return in jfs_mkdir and orangefs_mkdir
Return NULL instead of passing to ERR_PTR while err is zero
Fixes these smatch warnings:
- fs/jfs/namei.c:311 jfs_mkdir() warn: passing zero to 'ERR_PTR'
- fs/orangefs/namei.c:369 orangefs_mkdir() warn: passing zero
to 'ERR_PTR'
Fixes:
|
||
Junyoung Jang
|
a3bf0f28d4 |
fs/statmount: fix slab out-of-bounds write in statmount_mnt_idmap
statmount_mnt_idmap() writes one mapping with seq_printf() and then
manually advances seq->count to include the NUL separator.
If seq_printf() overflows, seq_set_overflow() sets seq->count to
seq->size. The manual seq->count++ changes this to seq->size + 1.
seq_has_overflowed() then no longer detects the overflow. The corrupted
count returns to statmount_string(), which later executes:
seq->buf[seq->count++] = '\0';
This causes a 1-byte NULL out-of-bounds write on the dynamically
allocated seq buffer.
Fix this by checking for overflow immediately after seq_printf().
Fixes:
|
||
Linus Torvalds
|
5d6919055d | Linux 7.1-rc3 v7.1-rc3 | ||
|
Linus Torvalds
|
afaa0a4770 |
- Fix a string leak in the versalnet driver
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||
Hyunwoo Kim
|
aa54b1d27f |
rxrpc: Also unshare DATA/RESPONSE packets when paged frags are present
The DATA-packet handler in rxrpc_input_call_event() and the RESPONSE
handler in rxrpc_verify_response() copy the skb to a linear one before
calling into the security ops only when skb_cloned() is true. An skb
that is not cloned but still carries externally-owned paged fragments
(e.g. SKBFL_SHARED_FRAG set by splice() into a UDP socket via
__ip_append_data, or a chained skb_has_frag_list()) falls through to
the in-place decryption path, which binds the frag pages directly into
the AEAD/skcipher SGL via skb_to_sgvec().
Extend the gate to also unshare when skb_has_frag_list() or
skb_has_shared_frag() is true. This catches the splice-loopback vector
and other externally-shared frag sources while preserving the
zero-copy fast path for skbs whose frags are kernel-private (e.g. NIC
page_pool RX, GRO). The OOM/trace handling already in place is reused.
Fixes:
|
||
|
Linus Torvalds
|
a1a10cdbc6 |
Fixes for clk drivers:
- Mark the DDR bus clk critical in the SpaceMiT driver so that
boot doesn't fail
- Fix boot on Mobile EyeQ by creating the auxiliary device for
the ethernet PHY
- Plug an OF node leak in Rockchip rk808 clk driver
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk driver fixes from Stephen Boyd:
- Mark the DDR bus clk critical in the SpaceMiT driver so that
boot doesn't fail
- Fix boot on Mobile EyeQ by creating the auxiliary device for
the ethernet PHY
- Plug an OF node leak in Rockchip rk808 clk driver
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: rk808: fix OF node reference imbalance
MAINTAINERS: add myself as a reviewer for the clk subsystem
reset: eyeq: drop device_set_of_node_from_dev() done by parent
clk: eyeq: add EyeQ5 children auxiliary device for generic PHYs
clk: eyeq: use the auxiliary device creation helper
clk: spacemit: k3: mark top_dclk as CLK_IS_CRITICAL
|
||
|
Linus Torvalds
|
515186b7be |
bpf-fixes
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Merge tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Pull bpf fixes from Alexei Starovoitov:
- Fix sk_local_storage diag dump via netlink (Amery Hung)
- Fix off-by-one in arena direct-value access (Junyoung Jang)
- Reject TCP_NODELAY in bpf-tcp congestion control (KaFai Wan)
- Fix type confusion in bpf_*_sock() (Kuniyuki Iwashima)
- Reject TX-only AF_XDP sockets (Linpu Yu)
- Don't run arg-tracking analysis twice on main subprog (Paul Chaignon)
- Fix NULL pointer dereference in bpf_sk_storage_clone and fib lookup
(Weiming Shi)
* tag 'bpf-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
bpf: Fix off-by-one boundary validation in arena direct-value access
xskmap: reject TX-only AF_XDP sockets
bpf: Don't run arg-tracking analysis twice on main subprog
bpf: Free reuseport cBPF prog after RCU grace period.
bpf: tcp: Fix type confusion in sol_tcp_sockopt().
bpf: tcp: Fix type confusion in bpf_skc_to_tcp6_sock().
bpf: tcp: Fix type confusion in bpf_skc_to_tcp_sock().
mptcp: bpf: Fix type confusion in bpf_mptcp_sock_from_subflow()
selftest: bpf: Add test for bpf_tcp_sock() and RAW socket.
bpf: tcp: Fix type confusion in bpf_tcp_sock().
tools/headers: Regenerate stddef.h to fix BPF selftests
bpf: Fix sk_local_storage diag dumping uninitialized special fields
bpf: Fix NULL pointer dereference in bpf_skb_fib_lookup()
sockmap: Fix sk_psock_drop() race vs sock_map_{unhash,close,destroy}().
bpf: Fix NULL pointer dereference in bpf_sk_storage_clone and diag paths
selftests/bpf: Verify bpf-tcp-cc rejects TCP_NODELAY
selftests/bpf: Test TCP_NODELAY in TCP hdr opt callbacks
bpf: Reject TCP_NODELAY in bpf-tcp-cc
bpf: Reject TCP_NODELAY in TCP header option callbacks
|
||
|
Junyoung Jang
|
3ac1a467e3 |
bpf: Fix off-by-one boundary validation in arena direct-value access
BPF_MAP_TYPE_ARENA accepts BPF_PSEUDO_MAP_VALUE offsets at exactly
the end of the arena mapping (off == arena_size). The boundary check
in arena_map_direct_value_addr() uses `>` instead of `>=`, which
incorrectly allows a one-past-end pointer to be accepted.
Change the condition to `>=` to correctly reject offsets that fall
outside the valid arena user_vm range.
Fixes:
|
||
Linpu Yu
|
bf6d507f7e |
xskmap: reject TX-only AF_XDP sockets
XSKMAP entries are used as redirect targets for incoming XDP frames.
A TX-only AF_XDP socket lacks an Rx ring and cannot handle redirected
traffic, but xsk_map_update_elem() currently allows such sockets to
be inserted into the map.
Redirecting packets to such a socket on the veth generic-XDP path
causes a kernel crash in xsk_generic_rcv().
This became possible after xsk_is_setup_for_bpf_map() was removed from
the XSKMAP update path, which allowed bound TX-only sockets to be
inserted into the map.
Reject TX-only sockets during XSKMAP updates to avoid the crash.
They remain fully operational for pure Tx purposes outside XSKMAP.
Fixes:
|
||
Paul Chaignon
|
512809bb8a |
bpf: Don't run arg-tracking analysis twice on main subprog
Because subprog 0, the main subprog, is considered a global function,
we end up running the arg-tracking dataflow analysis twice on it. That
results in slightly longer verification but mostly in more verbose
verifier logs. This patch fixes it by keeping only the iteration over
global subprogs.
When running over all of Cilium's programs with BPF_LOG_LEVEL2, this
reduces verbosity by ~20% on average.
Fixes:
|
||
|
Linus Torvalds
|
1bfaee9d33 |
fsverity fix for v7.1-rc3
Fix a regression in overlayfs caused by an fsverity API change -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQSacvsUNc7UX4ntmEPzXCl4vpKOKwUCaf97zhQcZWJpZ2dlcnNA a2VybmVsLm9yZwAKCRDzXCl4vpKOK+PtAQDzevIJ21gYwhimSRxpbB/eDRQO3gD2 wz4bz2lXZiCjIwEA8rktrlFgrLeqo1W252YXGpvlczf5qgupos3t4Hm8LAk= =WsMl -----END PGP SIGNATURE----- Merge tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fsverity/linux Pull fsverity fix from Eric Biggers: "Fix a regression in overlayfs caused by an fsverity API change" * tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fsverity/linux: ovl: fix verity lazy-load guard broken by fsverity_active() semantic change |
||
|
Linus Torvalds
|
e92b2872d0 |
Rust fixes for v7.1
Toolchain and infrastructure:
- Add 'bindgen' target to make UML 32-bit builds work with GCC.
- Disable two Clippy warnings ('collapsible_{if,match}').
'pin-init' crate:
- Fix unsoundness issue that created &'static references.
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Merge tag 'rust-fixes-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux
Pull Rust fixes from Miguel Ojeda:
"Toolchain and infrastructure:
- Add 'bindgen' target to make UML 32-bit builds work with GCC
- Disable two Clippy warnings ('collapsible_{if,match}')
'pin-init' crate:
- Fix unsoundness issue that created &'static references"
* tag 'rust-fixes-7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux:
rust: allow `clippy::collapsible_if` globally
rust: allow `clippy::collapsible_match` globally
rust: pin-init: fix incorrect accessor reference lifetime
rust: pin-init: internal: move alignment check to `make_field_check`
rust: arch: um: Fix building 32-bit UML with GCC
|
||
|
Linus Torvalds
|
ec89572766 |
hwmon fixes for v7.1-rc3
* ads7871: Fix endianness bug in 16-bit register reads * lm75: Fix configuration register writes and AS6200/TMP112 setup and alarm handling * lm63: Fix TOCTOU problems * corsair-psu: Close HID device on probe errors * ltc2992: Fix overflow and threshold range * Documentation: fix link to ideapad-laptop.c file * Makefile: Remove stale CONFIG_SENSORS_SBRMI Makefile reference -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEiHPvMQj9QTOCiqgVyx8mb86fmYEFAmn/RB8ACgkQyx8mb86f mYGoYQ//UP395fxUKRA7Z2yqI6qOCm0afBpuinf406qOks8ape7caPzM3lgrwTIv vvL+VRmPhCdxrl1u3VP5wM802k7jzJ8JmIGiB767ArquFhEuSoSH1J0JRs2EBbcA gRHgtWKbbKZbIMaoAZ6HZCuc9CjdV1jxmVn1XtuD06e6grXmXOLQLt80SsKQBDgG Pa7w+dMzT53DaRrAy5XzSbB7LK6ADdacivNlu0/W5qWuHw3oVDqloGdXGCLGcLfd h4XKq3LzZetu3Hb352PAoCBGN/vEJaKexb8TzHB/omqijEKi8PiZIueldiZSc+5N ndTPP1oHSuh4S/lS+cfl1YqQmQjAyylLk4PHp3fIZmm+YAc4RqhQrAaM2nIYnLGf lcdKkeZatwLp6ynO68gJxuK6JTacy9alWGwffzuVqVOCdcZsz8x5F0PNvSoYXKST La05RZ/sm0TQQxkSzj8DIg17Qlc/byg3EQ5PIYpBd08zgMr5ohUwDIfgZ9zgmBsh ShFggpSu43gW6ltRYjNcpKZnrd5ahglHB1yCbfmBUzx7ZjPiF2p4nyGweFWQceGQ 64X0NvXmHID4PlR36KkalU4OTB+u73ml0J42qlEjbu82E5qRtl3TUEGbLeShfHcQ SWvHqfdP/vaQXrVjR+XY2nzSBhhhE5WP4KC2kUm5AJ2FBCt9tP8= =5LR5 -----END PGP SIGNATURE----- Merge tag 'hwmon-for-v7.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging Pull hwmon fixes from Guenter Roeck: - ads7871: Fix endianness bug in 16-bit register reads - lm75: Fix configuration register writes and AS6200/TMP112 setup and alarm handling - lm63: Fix TOCTOU problems - corsair-psu: Close HID device on probe errors - ltc2992: Fix overflow and threshold range - Documentation: fix link to ideapad-laptop.c file - Remove stale CONFIG_SENSORS_SBRMI Makefile reference * tag 'hwmon-for-v7.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: hwmon: (ads7871) Fix endianness bug in 16-bit register reads hwmon: (lm75) Fix configuration register writes. hwmon: (lm75) Fix AS6200 and TMP112 setup and alarm handling hwmon: (lm63) Add locking to avoid TOCTOU hwmon: (corsair-psu) Close HID device on probe errors hwmon: Remove stale CONFIG_SENSORS_SBRMI Makefile reference Documentation: hwmon: fix link to ideapad-laptop.c file hwmon: (ltc2992) Fix u32 overflow in power read path hwmon: (ltc2992) Clamp threshold writes to hardware range |
||
|
Linus Torvalds
|
234d72ae02 |
Staging driver fixes for 7.1-rc3
Here are two small staging driver fixes for 7.1-rc3. They are: - vme_user root device leak fix - NULL dereference bugfix in the rtl8723bs driver Both of these have been in linux-next all this week with no reported issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCaf7ksA8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+yk3cACgjbF86RGquBMOmCvW0y05gLGXACsAoM4cOfQd Wel+rDTKUoa6FvreddHi =vHTv -----END PGP SIGNATURE----- Merge tag 'staging-7.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging Pull staging driver fixes from Greg KH: "Here are two small staging driver fixes for 7.1-rc3. They are: - vme_user root device leak fix - NULL dereference bugfix in the rtl8723bs driver Both of these have been in linux-next all this week with no reported issues" * tag 'staging-7.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: staging: rtl8723bs: os_dep: avoid NULL pointer dereference in rtw_cbuf_alloc staging: vme_user: fix root device leak on init failure |
||
|
Linus Torvalds
|
fe3e5bc9e3 |
USB driver fixes for 7.1-rc3
Here are some small USB driver fixes for 7.1-rc3 to resolve some reported issues, and a new device id. These are: - usblp driver heap leak fixes - ulpi driver memory leak fix - typec driver fixes - dwc3 driver fix - omap dma driver fix - new option driver device id addition All of these have been in linux-next for over a week with no reported issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCaf7mNg8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ylbXACfWg3KnXzN+gCG8PM/zVLtinrAhDgAoLzKi1xv OqVhzuOICtZiP8WBoBoC =SeVl -----END PGP SIGNATURE----- Merge tag 'usb-7.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB driver fixes from Greg KH: "Here are some small USB driver fixes for 7.1-rc3 to resolve some reported issues, and a new device id. These are: - usblp driver heap leak fixes - ulpi driver memory leak fix - typec driver fixes - dwc3 driver fix - omap dma driver fix - new option driver device id addition All of these have been in linux-next for over a week with no reported issues" * tag 'usb-7.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: USB: serial: option: add Telit Cinterion LE910Cx compositions usb: usblp: fix uninitialized heap leak via LPGETSTATUS ioctl usb: usblp: fix heap leak in IEEE 1284 device ID via short response usb: dwc3: Move GUID programming after PHY initialization usb: typec: tcpm: fix debug accessory mode detection for sink ports usb: typec: tcpm: reset internal port states on soft reset AMS usb: ulpi: fix memory leak on ulpi_register() error paths USB: omap_udc: DMA: Don't enable burst 4 mode |
||
|
Linus Torvalds
|
656a95c4a0 |
i2c-for-7.1-rc3
- sanitize more input parameters in the core (found by syzkaller) - usual set of driver fixes (proper completion handling, applying quirks, correct workqueue selection...) - ID additions to simplify dependency handling - new email address for Peter Rosin -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAmn+zbcACgkQFA3kzBSg Kba3Uw//c4XYA1og7d/Hui+j8cKPB8+Wxerz66d3uKwhkaS2HS3W7TTJD6xffBya o4i/Vr1lG3fKbktiai+wyfQa26CrPduV4fv7vHF6TT9vCdiCoyqL7e82ME0DaSqY ux/scwheG93O3lw2cwDevZzZHlarDG0ZKp89HqwMzKwThT3NGQNmGN/SbWNDcc1B tmvyuUDdQ8pooRCKfuWwNcJe2Sh6vmkFhGMGMzOrZwLZWoqbGN4ywcrhfQr20QR4 /5uzk6CKsuc+zgcl46gyMzExwimaKry3JFiZVUHLz2yursE3oBBzasn3/6BYHI2d sv+20MJX13s8HtumvuKPZp6aBRVAIB2SYkG/ZnBwQmfuR21ndnrQIisaYCp18Rjt 90ouv2wpQTUYCXeDnye2weCgcsROX7FoB391PupLDShXikZOmqf94gmJBGkPW/vb ZfukxvXEMddgW8Zpm6W1xoCXdeZSS5YwlBmhBhz+vYbIW4UwZQi98WxTVQZF6O3O ch2GqZdUBJyxHkGCRlDpbXrqHKr/ZYRHidCxftIWIamt3Nvqsa5elFXOJekgixiu /UNyDjSvI61OqGPfAq5tBrPb/Y7NDJQBiwoOm70rHTjeMLIOq4f1cx4Q2+CghJfw cD4zauFZqfWM87J1j93x9krZBCD+qbVzmL8U8iBXCLrfQUg6SG0= =rlX+ -----END PGP SIGNATURE----- Merge tag 'i2c-for-7.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c fixes from Wolfram Sang: - sanitize more input parameters in the core (found by syzkaller) - usual set of driver fixes (proper completion handling, applying quirks, correct workqueue selection...) - ID additions to simplify dependency handling - new email address for Peter Rosin * tag 'i2c-for-7.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: smbus: reject oversized block transfers in the common path MAINTAINERS: Update mail for Peter Rosin i2c: stub: Reject I2C block transfers with invalid length i2c: Compare the return value of gpiod_get_direction against GPIO_LINE_DIRECTION_OUT i2c: dev: prevent integer overflow in I2C_TIMEOUT ioctl i2c: acpi: Add ELAN0678 to i2c_acpi_force_100khz_device_ids dt-bindings: i2c: apple,i2c: Add t8122 compatible i2c: stm32f7: reinit_completion() per transfer not per msg dt-bindings: i2c: amlogic: Add compatible for T7 SOC i2c: testunit: Replace system_long_wq with system_dfl_long_wq |
||
|
Linus Torvalds
|
bf0e022821 |
powerpc fixes for 7.1 #2
- Fix KASAN sanitization flag for core_$(BITS).o - Fixes for handling offset values in pseries htmdump - Fix interrupt mask in cpm1_gpiochip_add16() - ps3/pasemi fixes to drop redundant result assignment - Fixes in papr-hvpipe code path - powerpc/perf: Update check for PERF_SAMPLE_DATA_SRC marked events Thanks to: Aboorva Devarajan, Athira Rajeev, Christophe Leroy (CS GROUP), Geert Uytterhoeven, Haren Myneni, Krzysztof Kozlowski, Mukesh Kumar Chaurasiya (IBM), Nathan Chancellor, Ritesh Harjani (IBM), Shivani Nittor, Sourabh Jain, Thomas Zimmermann, Venkat Rao Bagalkote -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEqX2DNAOgU8sBX3pRpnEsdPSHZJQFAmn+wiwACgkQpnEsdPSH ZJTF7g//aOOjo6k1HR+HMjIVdk2ri3XOQurw76uJw1HDNhgdsOpT9EUIsKJ2yRPQ pSBrqVJ0stn0g1HV38oRKi7zBeTvyBtI1xLKnim93hdLHNjrjgGSL1U884QE35IB TTH8agzpqsCWQlg6nge/3bTCROedkWltEgoohmMsaUHUOgh/lWVXFCjXKyNSAoLr AxPeCLFqYAr+QplFz9YU5SziLJ5MkWzfaNE0jYzhtfNs9l8CUAaHimq+ggCYirEO arXcccSkG2OW7fB6ImsVg1jVNoA5TtdmG2IUv+hB/pSXpJ1H0o2gEMRFI2avoPtu LzH85cQej/i1pX4H6JZj8oYzP3vkMR+aypid2O3vE7vJFAqHtydbgwgQKsupaFyi aPYMZR1r7UgDmqi6CoCcc55Wyoid9j7oZj9B5EDnWEcLcfPb7Gc7Pe2VdHj0Vu8j OSDPuJ3FPI7s03/T0KSXkJKAGZbigvHY/gSI2YRtCMyKSk56dYut/ARCEEFTr+hU NXGOwD/fe9nAg2fDdK9ou+iuBk943WPNMQTWZ4rcrV/XkpGS1mgXh9yIiJ3o4jr2 Mlodv5fOhFJwt/vn/0WPi9gA9e5saOme6cKEhFyNtjHhLAqws3E/+VOTgxfXRauY k4zGaJ5jbXupjCJkwh+UpAHa/sN+LN2cpx/zhQYtt8yG6qBXM2I= =ZRl8 -----END PGP SIGNATURE----- Merge tag 'powerpc-7.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Madhavan Srinivasan: - Fix KASAN sanitization flag for core_$(BITS).o - Fixes for handling offset values in pseries htmdump - Fix interrupt mask in cpm1_gpiochip_add16() - ps3/pasemi fixes to drop redundant result assignment - Fixes in papr-hvpipe code path - powerpc/perf: Update check for PERF_SAMPLE_DATA_SRC marked events Thanks to Aboorva Devarajan, Athira Rajeev, Christophe Leroy (CS GROUP), Geert Uytterhoeven, Haren Myneni, Krzysztof Kozlowski, Mukesh Kumar Chaurasiya (IBM), Nathan Chancellor, Ritesh Harjani (IBM), Shivani Nittor, Sourabh Jain, Thomas Zimmermann, and Venkat Rao Bagalkote. * tag 'powerpc-7.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (21 commits) powerpc/pasemi: Drop redundant res assignment powerpc/ps3: Drop redundant result assignment powerpc/vdso: Drop -DCC_USING_PATCHABLE_FUNCTION_ENTRY from 32-bit flags with clang arch/powerpc: Drop CONFIG_FIRMWARE_EDID from defconfig files powerpc/perf: Update check for PERF_SAMPLE_DATA_SRC marked events powerpc/8xx: Fix interrupt mask in cpm1_gpiochip_add16() powerpc/vmx: avoid KASAN instrumentation in enter_vmx_ops() for kexec powerpc/kdump: fix KASAN sanitization flag for core_$(BITS).o pseries/papr-hvpipe: Fix style and checkpatch issues in enable_hvpipe_IRQ() pseries/papr-hvpipe: Refactor and simplify hvpipe_rtas_recv_msg() pseries/papr-hvpipe: Kill task_struct pointer from struct hvpipe_source_info pseries/papr-hvpipe: Simplify spin unlock usage in papr_hvpipe_handle_release() pseries/papr-hvpipe: Fix the usage of copy_to_user() pseries/papr-hvpipe: Fix & simplify error handling in papr_hvpipe_init() pseries/papr-hvpipe: Fix null ptr deref in papr_hvpipe_dev_create_handle() pseries/papr-hvpipe: Prevent kernel stack memory leak to userspace pseries/papr-hvpipe: Fix race with interrupt handler powerpc/pseries/htmdump: Add memory configuration dump support to htmdump module powerpc/pseries/htmdump: Fix the offset value used in htm status dump powerpc/pseries/htmdump: Fix the offset value used in processor configuration dump ... |
||
|
Linus Torvalds
|
70390501d1 |
Miscellaneous x86 fixes:
- Fix memory map enumeration bug in the Xen e820 parsing code
(Juergen Gross)
- Re-enable e820 BIOS fallback if e820 table is empty
(David Gow)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2026-05-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
- Fix memory map enumeration bug in the Xen e820 parsing code (Juergen
Gross)
- Re-enable e820 BIOS fallback if e820 table is empty (David Gow)
* tag 'x86-urgent-2026-05-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/boot/e820: Re-enable BIOS fallback if e820 table is empty
x86/xen: Fix a potential problem in xen_e820_resolve_conflicts()
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Linus Torvalds
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6e1e5a33e8 |
Fix CPU hotplug activation race in the timer migration code,
by Frederic Weisbecker. Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmn+lQYRHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1iNhhAAmzI4kh9kulol1M73u+LiQTdx0zMcDcSM NiHeZ+QbNNMqkfnj6xxOVGViPLTVSXpa+dU4hdeHM3n7vYnlGDiHBm4EM95z7S28 Jk39z6Wq/0vmR938rhVVNgMbyx3N+rHV15ReyY88vq6OcI4SdJ9sin72ZW8piuBi EeHZLOyPsz+qf4tG6UFHP3uzM7fQZ9DrVxzcDZE4+xbVpk1kXLuAGo89wXF0GbUX NhUYtHakvARehLg3N+0qo/DUGRXYp1GF+qfIXH7V6g91eMhPureUrhzsKVmbu5BL OXMMskWG20LhySrLX+fKDk8DH3n3G+dTFCgM5kc6JaR4vLT0prEJHeVsIX+ydOLF sZqqkaVhKvFNlxjrqbjRNBV09/Cd9XN1wYUqnBeh55qzB+yoOnfS9+z7dsguf38K YKiCmlt2T68NL5/ZUvXF3ghm5ic7dTyZFUyM/abo7rSTeGByh5vruD19r2zp0C1/ hgSPmAm8fuJAzQCRUzXxDsY5hLhKtv+1h9+Y9humakzfxUdneydsHigz5YjZ6tzI E8LyLsBZnSB6IKZfVetwpg0xTxB75GtSwa+p0XUg2+q2ss94mYmWMFM+ZKWxaTYq yI5paLXZT1DO9Fx/4gsCDlUrR1y096GL6O/1t3TOUsoJ/9kEFvOL/ZF4sjEnWrch CYI+DPoUOUA= =UHOI -----END PGP SIGNATURE----- Merge tag 'timers-urgent-2026-05-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer fix from Ingo Molnar: "Fix CPU hotplug activation race in the timer migration code, by Frederic Weisbecker" * tag 'timers-urgent-2026-05-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: timers/migration: Fix another hotplug activation race |
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Linus Torvalds
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7f00232152 |
Miscellaneous scheduler fixes:
- Fix spurious failures in rseq self-tests (Mark Brown)
- Fix rseq rseq::cpu_id_start ABI regression due to
TCMalloc's creative use of the supposedly read-only field.
The fix is to introduce a new ABI variant based on
a new (larger) rseq area registration size, to keep
the TCMalloc use of rseq backwards compatible on new kernels.
(Thomas Gleixner)
- Fix wakeup_preempt_fair() for not waking up task (Vincent Guittot)
- Fix s64 mult overflow in vruntime_eligible() (Zhan Xusheng)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-urgent-2026-05-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
- Fix spurious failures in rseq self-tests (Mark Brown)
- Fix rseq rseq::cpu_id_start ABI regression due to TCMalloc's creative
use of the supposedly read-only field
The fix is to introduce a new ABI variant based on a new (larger)
rseq area registration size, to keep the TCMalloc use of rseq
backwards compatible on new kernels (Thomas Gleixner)
- Fix wakeup_preempt_fair() for not waking up task (Vincent Guittot)
- Fix s64 mult overflow in vruntime_eligible() (Zhan Xusheng)
* tag 'sched-urgent-2026-05-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/fair: Fix wakeup_preempt_fair() for not waking up task
sched/fair: Fix overflow in vruntime_eligible()
selftests/rseq: Expand for optimized RSEQ ABI v2
rseq: Reenable performance optimizations conditionally
rseq: Implement read only ABI enforcement for optimized RSEQ V2 mode
selftests/rseq: Validate legacy behavior
selftests/rseq: Make registration flexible for legacy and optimized mode
selftests/rseq: Skip tests if time slice extensions are not available
rseq: Revert to historical performance killing behaviour
rseq: Don't advertise time slice extensions if disabled
rseq: Protect rseq_reset() against interrupts
rseq: Set rseq::cpu_id_start to 0 on unregistration
selftests/rseq: Don't run tests with runner scripts outside of the scripts
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