Trond Myklebust 181feb41f0 NFS: Fix a race when updating an existing write ... commit 76d2e3890f upstream. After nfs_lock_and_join_requests() tests for whether the request is still attached to the mapping, nothing prevents a call to nfs_inode_remove_request() from succeeding until we actually lock the page group. The reason is that whoever called nfs_inode_remove_request() doesn't necessarily have a lock on the page group head. So in order to avoid races, let's take the page group lock earlier in nfs_lock_and_join_requests(), and hold it across the removal of the request in nfs_inode_remove_request(). Reported-by: Jeff Layton <jlayton@kernel.org> Tested-by: Joe Quanaim <jdq@meta.com> Tested-by: Andrew Steffen <aksteffen@meta.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Fixes: bd37d6fce1 ("NFSv4: Convert nfs_lock_and_join_requests() to use nfs_page_find_head_request()") Cc: stable@vger.kernel.org Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2025-09-04 15:30:20 +02:00
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acpi	ACPICA: Avoid sequence overread in call to strncmp()	2025-06-27 11:08:52 +01:00
asm-generic
clocksource
crypto
drm	drm/framebuffer: Acquire internal references on GEM handles	2025-07-17 18:35:14 +02:00
dt-bindings
keys
kunit
kvm
linux	NFS: Fix a race when updating an existing write	2025-09-04 15:30:20 +02:00
math-emu
media
memory
misc
net	bonding: Add independent control state machine	2025-08-28 16:28:49 +02:00
pcmcia
ras
rdma
rv
scsi
soc
sound
target
trace	btrfs: constify more pointer parameters	2025-08-28 16:28:41 +02:00
uapi	bonding: Add independent control state machine	2025-08-28 16:28:49 +02:00
ufs	scsi: ufs: core: Add OPP support for scaling clocks and regulators	2025-07-10 16:03:14 +02:00
vdso
video
xen