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f88420197a
android_kernel_asus_sm8350/fs/nfsd
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Patrick Ho f88420197a nfsd: fix error handling of register_pernet_subsys() in init_nfsd() 
commit 1d625050c7c2dd877e108e382b8aaf1ae3cfe1f4 upstream.

init_nfsd() should not unregister pernet subsys if the register fails
but should instead unwind from the last successful operation which is
register_filesystem().

Unregistering a failed register_pernet_subsys() call can result in
a kernel GPF as revealed by programmatically injecting an error in
register_pernet_subsys().

Verified the fix handled failure gracefully with no lingering nfsd
entry in /proc/filesystems.  This change was introduced by the commit
bd5ae9288d64 ("nfsd: register pernet ops last, unregister first"),
the original error handling logic was correct.

Fixes: bd5ae9288d64 ("nfsd: register pernet ops last, unregister first")
Cc: stable@vger.kernel.org
Signed-off-by: Patrick Ho <Patrick.Ho@netapp.com>
Acked-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-10-13 10:08:17 +02:00
..
acl.h nfsd: eliminate an unnecessary acl size limit 2019-08-28 21:13:45 -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 nfsd: convert fi_deleg_file and ls_file fields to nfsd_file 2019-08-19 11:09:09 -04:00
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 nfsd4: make drc_slab global, not per-net 2020-06-24 17:50:37 +02:00
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 nfsd: nfsd_file cache entries should be per net namespace 2019-09-10 09:23:41 -04:00
export.h knfsd: Allow lockless lookups of the exports 2018-10-29 16:58:04 -04:00
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: Don't keep looking up unhashed files in the nfsd file cache 2021-03-24 11:26:38 +01:00
filecache.h nfsd: nfsd_file cache entries should be per net namespace 2019-09-10 09:23:41 -04:00
flexfilelayout.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
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 nfsd: Remove duplicate define of IDMAP_NAMESZ/IDMAP_TYPE_xx 2015-07-20 14:58:46 -04:00
Kconfig fs: nfsd: fix kconfig dependency warning for NFSD_V4 2021-04-07 14:47:38 +02:00
lockd.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile nfsd: add a new struct file caching facility to nfsd 2019-08-19 11:00:39 -04:00
netns.h nfsd4: make drc_slab global, not per-net 2020-06-24 17:50:37 +02:00
nfs2acl.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs3acl.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nfs3proc.c nfsd: fix nfs read eof detection 2019-09-23 16:24:08 -04:00
nfs3xdr.c nfsd4: readdirplus shouldn't return parent of export 2021-01-23 15:57:56 +01:00
nfs4acl.c nfsd: check permissions when setting ACLs 2016-06-24 12:11:52 -04:00
nfs4callback.c NFSD: fix error handling in NFSv4.0 callbacks 2021-04-07 14:47:39 +02:00
nfs4idmap.c nfsd: Fix misuse of strlcpy 2019-07-08 23:16:11 -04:00
nfs4layouts.c nfsd: fix delay timer on 32-bit architectures 2020-02-11 04:35:46 -08:00
nfs4proc.c NFSD fixing possible null pointer derefering in copy offload 2020-01-17 19:49:02 +01:00
nfs4recover.c nfsd: Fix cld_net->cn_tfm initialization 2020-01-17 19:48:47 +01:00
nfs4state.c nfsd4: Fix forced-expiry locking 2021-09-15 09:47:35 +02:00
nfs4xdr.c nfsd: Fix NFSv4 READ on RDMA when using readv 2020-08-11 15:33:42 +02:00
nfscache.c silence nfscache allocation warnings with kvzalloc 2021-10-09 14:39:50 +02:00
nfsctl.c nfsd: fix error handling of register_pernet_subsys() in init_nfsd() 2021-10-13 10:08:17 +02:00
nfsd.h nfsd4: fix nfsdfs reference count loop 2020-07-09 09:37:53 +02:00
nfsfh.c nfsd: use true and false for boolean values 2018-08-09 16:11:21 -04:00
nfsfh.h This request is late, apologies. 2018-02-08 15:18:32 -08:00
nfsproc.c NFSD: Add missing NFSv2 .pc_func methods 2020-11-05 11:43:31 +01:00
nfssvc.c nfsd: Fix message level for normal termination 2020-12-30 11:51:22 +01:00
nfsxdr.c nfsd: knfsd must use the container user namespace 2019-04-24 09:46:35 -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: fix jiffies/time_t mixup in LRU list 2020-02-11 04:35:47 -08:00
stats.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
stats.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
trace.c nfsd: move include of state.h from trace.c to trace.h 2015-10-23 15:57:29 -04:00
trace.h nfsd: Fix a perf warning 2020-10-01 13:17:31 +02:00
vfs.c nfsd: apply umask on fs without ACL support 2020-07-09 09:37:55 +02:00
vfs.h nfsd: Ensure CLONE persists data and metadata changes to the target file 2019-12-13 08:42:51 +01:00
xdr3.h nfsd: fix nfs read eof detection 2019-09-23 16:24:08 -04:00
xdr4.h nfsd: hook up nfs4_preprocess_stateid_op to the nfsd_file cache 2019-08-19 11:09:09 -04:00
xdr4cb.h NFSD CB_OFFLOAD xdr 2018-09-25 20:34:54 -04:00
xdr.h NFSD: Clean up legacy NFS SYMLINK argument XDR decoders 2018-04-03 15:08:16 -04:00