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linux/fs/nfsd
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Tetsuo Handa bd86c69dae NFSD: unregister shrinker when nfsd_init_net() fails 
syzbot is reporting UAF read at register_shrinker_prepared() [1], for
commit 7746b32f467b3813 ("NFSD: add shrinker to reap courtesy clients on
low memory condition") missed that nfsd4_leases_net_shutdown() from
nfsd_exit_net() is called only when nfsd_init_net() succeeded.
If nfsd_init_net() fails due to nfsd_reply_cache_init() failure,
register_shrinker() from nfsd4_init_leases_net() has to be undone
before nfsd_init_net() returns.

Link: https://syzkaller.appspot.com/bug?extid=ff796f04613b4c84ad89 [1]
Reported-by: syzbot <syzbot+ff796f04613b4c84ad89@syzkaller.appspotmail.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Fixes: 7746b32f467b3813 ("NFSD: add shrinker to reap courtesy clients on low memory condition")
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2022-10-11 10:08:26 -04:00
..
acl.h
NFSD: add posix ACLs to struct nfsd_attrs
2022-08-04 10:28:03 -04:00
auth.c
nfsd: auth: Fix gid sorting when rootsquash enabled
2018-01-22 20:13:07 -08:00
auth.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
blocklayout.c
block: remove genhd.h
2022-02-02 07:49:59 -07:00
blocklayoutxdr.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
blocklayoutxdr.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
cache.h
nfsd: use DEFINE_SHOW_ATTRIBUTE to define nfsd_reply_cache_stats_fops
2022-09-26 14:02:50 -04:00
current_stateid.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
export.c
fs: add is_idmapped_mnt() helper
2021-12-03 18:44:06 +01:00
export.h
nfsd: report per-export stats
2021-01-25 09:36:28 -05:00
fault_inject.c
nfsd: no need to check return value of debugfs_create functions
2019-07-03 16:57:17 +02:00
filecache.c
nfsd: rework hashtable handling in nfsd_do_file_acquire
2022-10-05 10:57:48 -04:00
filecache.h
nfsd: use DEFINE_SHOW_ATTRIBUTE to define nfsd_file_cache_stats_fops
2022-09-26 14:02:50 -04:00
flexfilelayout.c
nfsd: use correct format characters
2022-03-17 19:47:38 -04:00
flexfilelayoutxdr.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
flexfilelayoutxdr.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
idmap.h
…
Kconfig
NFSD: Remove CONFIG_NFSD_V3
2022-03-11 10:25:14 -05:00
lockd.c
NFSD: simplify struct nfsfh
2021-10-02 15:51:10 -04:00
Makefile
NFSD: Remove CONFIG_NFSD_V3
2022-03-11 10:25:14 -05:00
netns.h
NFSD: add shrinker to reap courtesy clients on low memory condition
2022-09-26 14:02:41 -04:00
nfs2acl.c
SUNRPC: Parametrize how much of argsize should be zeroed
2022-09-26 14:02:42 -04:00
nfs3acl.c
SUNRPC: Parametrize how much of argsize should be zeroed
2022-09-26 14:02:42 -04:00
nfs3proc.c
NFSD: Refactor common code out of dirlist helpers
2022-09-26 14:02:47 -04:00
nfs3xdr.c
NFSD: Clean up WRITE arg decoders
2022-09-26 14:02:47 -04:00
nfs4acl.c
NFSD: add posix ACLs to struct nfsd_attrs
2022-08-04 10:28:03 -04:00
nfs4callback.c
nfsd: make nfsd4_run_cb a bool return function
2022-09-26 14:50:57 -04:00
nfs4idmap.c
NFSD: move from strlcpy with unused retval to strscpy
2022-09-26 14:02:20 -04:00
nfs4layouts.c
NFSD: Add tracepoints to report NFSv4 callback completions
2022-09-26 14:02:32 -04:00
nfs4proc.c
NFSD: Cap rsize_bop result based on send buffer size
2022-09-26 14:02:50 -04:00
nfs4recover.c
nfsd: Propagate some error code returned by memdup_user()
2022-09-26 14:02:22 -04:00
nfs4state.c
nfsd: extra checks when freeing delegation stateids
2022-09-26 14:50:58 -04:00
nfs4xdr.c
NFSD: Clean up nfs4svc_encode_compoundres()
2022-09-26 14:02:48 -04:00
nfscache.c
nfsd: use DEFINE_SHOW_ATTRIBUTE to define nfsd_reply_cache_stats_fops
2022-09-26 14:02:50 -04:00
nfsctl.c
NFSD: unregister shrinker when nfsd_init_net() fails
2022-10-11 10:08:26 -04:00
nfsd.h
NFSD: add shrinker to reap courtesy clients on low memory condition
2022-09-26 14:02:41 -04:00
nfsfh.c
NFSD: Replace dprintk() call site in fh_verify()
2022-09-26 14:02:31 -04:00
nfsfh.h
NFSD: discard fh_locked flag and fh_lock/fh_unlock
2022-08-04 10:28:48 -04:00
nfsproc.c
NFSD: Refactor common code out of dirlist helpers
2022-09-26 14:02:47 -04:00
nfssvc.c
NFSD: move from strlcpy with unused retval to strscpy
2022-09-26 14:02:20 -04:00
nfsxdr.c
NFSD: Clean up WRITE arg decoders
2022-09-26 14:02:47 -04:00
pnfs.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
state.h
nfsd: make nfsd4_run_cb a bool return function
2022-09-26 14:50:57 -04:00
stats.c
nfsd: use DEFINE_PROC_SHOW_ATTRIBUTE to define nfsd_proc_ops
2022-09-26 14:02:49 -04:00
stats.h
nfsd: make nfsd_stats.th_cnt atomic_t
2021-12-13 13:42:51 -05:00
trace.c
NFSD: Add SPDX header for fs/nfsd/trace.c
2020-11-30 13:00:24 -05:00
trace.h
NFSD: Add a mechanism to wait for a DELEGRETURN
2022-09-26 14:02:32 -04:00
vfs.c
NFSD: Make nfsd4_remove() wait before returning NFS4ERR_DELAY
2022-09-26 14:02:41 -04:00
vfs.h
NFSD: drop fname and flen args from nfsd_create_locked()
2022-09-26 14:02:30 -04:00
xdr3.h
SUNRPC: Change return value type of .pc_encode
2021-10-13 11:34:49 -04:00
xdr4.h
NFSD: Pack struct nfsd4_compoundres
2022-09-26 14:02:49 -04:00
xdr4cb.h
NFSD CB_OFFLOAD xdr
2018-09-25 20:34:54 -04:00
xdr.h
NFSD: prevent underflow in nfssvc_decode_writeargs()
2022-03-15 09:35:56 -04:00