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kernel_samsung_a53x/fs/nfs
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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
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blocklayout Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
filelayout Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
flexfilelayout Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
cache_lib.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
cache_lib.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
callback.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
callback.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
callback_proc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
callback_xdr.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
client.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
delegation.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
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dir.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
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dns_resolve.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dns_resolve.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
export.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
file.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
fs_context.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
fscache-index.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
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fscache.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
getroot.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
inode.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
internal.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
io.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
iostat.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Kconfig Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Makefile Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mount_clnt.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
namespace.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
netns.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs2super.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs2xdr.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs3_fs.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs3acl.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs3client.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs3proc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs3super.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs3xdr.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs4_fs.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs4client.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs4file.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs4getroot.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs4idmap.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs4idmap.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs4namespace.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs4proc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs4renewd.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs4session.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs4session.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs4state.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs4super.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs4sysctl.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs4trace.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs4trace.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs4xdr.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs42.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs42proc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs42xattr.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfs42xdr.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfsroot.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfstrace.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
nfstrace.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pagelist.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pnfs.c pNFS: Fix a hang in nfs4_evict_inode() 2024-11-08 11:26:19 +01:00
pnfs.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pnfs_dev.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
pnfs_nfs.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
proc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
read.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
super.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
symlink.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sysctl.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sysfs.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sysfs.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
unlink.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
write.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00