Alexander Sverdlin c520943a00 nfsd: Fix nsfd startup race (again) ... commit b10252c7ae9c9d7c90552f88b544a44ee773af64 upstream. Commit bd5ae9288d64 ("nfsd: register pernet ops last, unregister first") has re-opened rpc_pipefs_event() race against nfsd_net_id registration (register_pernet_subsys()) which has been fixed by commit bb7ffbf29e ("nfsd: fix nsfd startup race triggering BUG_ON"). Restore the order of register_pernet_subsys() vs register_cld_notifier(). Add WARN_ON() to prevent a future regression. Crash info: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000012 CPU: 8 PID: 345 Comm: mount Not tainted 5.4.144-... #1 pc : rpc_pipefs_event+0x54/0x120 [nfsd] lr : rpc_pipefs_event+0x48/0x120 [nfsd] Call trace: rpc_pipefs_event+0x54/0x120 [nfsd] blocking_notifier_call_chain rpc_fill_super get_tree_keyed rpc_fs_get_tree vfs_get_tree do_mount ksys_mount __arm64_sys_mount el0_svc_handler el0_svc Fixes: bd5ae9288d64 ("nfsd: register pernet ops last, unregister first") Cc: stable@vger.kernel.org Signed-off-by: Alexander Sverdlin <alexander.sverdlin@nokia.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-12-14 11:32:39 +01:00
..
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	block: add a bdev_is_partition helper	2020-09-25 08:18:57 -06:00
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	2020-06-01 17:44:45 -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	NFSD: Map nfserr_wrongsec outside of nfsd_dispatch	2020-10-02 09:37:42 -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	2021-03-25 09:04:08 +01:00
filecache.h	nfsd: convert file cache to use over/underflow safe refcount	2020-02-06 11:22:55 -05:00
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 15:00:03 +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: remove fault injection code	2020-09-25 18:01:26 -04:00
netns.h	nfsd: netns.h: delete a duplicated word	2020-07-24 17:25:13 -04:00
nfs2acl.c	NFSD: Hoist status code encoding into XDR encoder functions	2020-10-12 10:29:44 -04:00
nfs3acl.c	NFSD: Hoist status code encoding into XDR encoder functions	2020-10-12 10:29:44 -04:00
nfs3proc.c	NFSD: MKNOD should return NFSERR_BADTYPE instead of NFSERR_INVAL	2020-11-05 17:20:12 -05:00
nfs3xdr.c	nfsd4: readdirplus shouldn't return parent of export	2021-01-23 16:03:58 +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 15:00:05 +02:00
nfs4idmap.c	nfsd: Use seq_putc() in two functions	2020-07-13 17:28:46 -04:00
nfs4layouts.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
nfs4proc.c	NFSv4.2: fix copy stateid copying for the async copy	2021-05-14 09:50:13 +02:00
nfs4recover.c	nfsd: Fix nsfd startup race (again)	2021-12-14 11:32:39 +01:00
nfs4state.c	nfsd: fix use-after-free due to delegation race	2021-12-14 11:32:39 +01:00
nfs4xdr.c	nfsd4: Handle the NFSv4 READDIR 'dircount' hint being zero	2021-10-13 10:04:24 +02:00
nfscache.c	silence nfscache allocation warnings with kvzalloc	2020-09-25 18:01:28 -04:00
nfsctl.c	nfsd: Fix nsfd startup race (again)	2021-12-14 11:32:39 +01:00
nfsd.h	nfsd: add defines for NFSv4.2 extended attribute support	2020-07-13 17:27:03 -04:00
nfsfh.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
nfsfh.h	nfsd: handle nfs3 timestamps as unsigned	2019-12-19 17:46:08 -05:00
nfsproc.c	new helper: inode_wrong_type()	2021-09-08 08:49:01 +02:00
nfssvc.c	nfsd: Fix message level for normal termination	2020-12-30 11:53:44 +01:00
nfsxdr.c	NFSD: Hoist status code encoding into XDR encoder functions	2020-10-12 10:29:44 -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: remove fault injection code	2020-09-25 18:01:26 -04:00
stats.c	proc: convert everything to "struct proc_ops"	2020-02-04 03:05:26 +00:00
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 TP_printk() format specifier in nfsd_clid_class	2021-07-20 16:05:50 +02:00
vfs.c	nfsd: Reduce contention for the nfsd_file nf_rwsem	2021-07-20 16:05:53 +02:00
vfs.h	nfsd: define xattr functions to call into their vfs counterparts	2020-07-13 17:27:03 -04:00
xdr3.h	NFSD: Encoder and decoder functions are always present	2020-10-02 09:37:41 -04:00
xdr4.h	NFSD: Encoder and decoder functions are always present	2020-10-02 09:37:41 -04:00
xdr4cb.h	NFSD CB_OFFLOAD xdr	2018-09-25 20:34:54 -04:00
xdr.h	NFSD: Hoist status code encoding into XDR encoder functions	2020-10-12 10:29:44 -04:00