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Trond Myklebust a54ffd2d3d pNFS: Fix a hang in nfs4_evict_inode() 
commit f63955721a8020e979b99cc417dcb6da3106aa24 upstream.

We are not allowed to call pnfs_mark_matching_lsegs_return() without
also holding a reference to the layout header, since doing so could lead
to the reference count going to zero when we call
pnfs_layout_remove_lseg(). This again can lead to a hang when we get to
nfs4_evict_inode() and are unable to clear the layout pointer.

pnfs_layout_return_unused_byserver() is guilty of this behaviour, and
has been seen to trigger the refcount warning prior to a hang.

Fixes: b6d49ecd1081 ("NFSv4: Fix a pNFS layout related use-after-free race when freeing the inode")
Cc: stable@vger.kernel.org
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-11-08 11:26:19 +01:00
..
9p Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
adfs Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
affs Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
afs Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
autofs Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
befs Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
bfs Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
btrfs btrfs: fix some -Wmaybe-uninitialized warnings in ioctl.c 2024-11-08 11:26:17 +01:00
cachefiles Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ceph ceph: fix type promotion bug on 32bit systems 2024-11-08 11:25:50 +01:00
cifs Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
coda Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
configfs Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
cramfs Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
crypto Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
debugfs Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
devpts Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
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exfat Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
exportfs Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ext2 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ext4 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
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fat Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
freevxfs Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
fscache Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
fuse Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gfs2 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
hfs Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
hfsplus Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
hostfs Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
hpfs Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
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iomap Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
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lockd Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
minix Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs pNFS: Fix a hang in nfs4_evict_inode() 2024-11-08 11:26:19 +01:00
nfs_common Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfsd Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
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notify Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
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openpromfs Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
orangefs Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
overlayfs overlayfs: set ctime when setting mtime and atime 2024-11-08 11:26:16 +01:00
proc Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pstore Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
qnx4 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
qnx6 Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
quota quota: Fix slow quotaoff 2024-11-08 11:25:43 +01:00
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anon_inodes.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
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compat_binfmt_elf.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
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eventfd.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
eventpoll.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
exec.c security: samsung: defex_lsm: nuke 2024-06-15 16:20:49 -03:00
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file_table.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
filesystems.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
fs-writeback.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
fs_context.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
fs_parser.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
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