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Bob Peterson a6b1752469 gfs2: check for empty rgrp tree in gfs2_ri_update 
commit 778721510e84209f78e31e2ccb296ae36d623f5e upstream.

If gfs2 tries to mount a (corrupt) file system that has no resource
groups it still tries to set preferences on the first one, which causes
a kernel null pointer dereference. This patch adds a check to function
gfs2_ri_update so this condition is detected and reported back as an
error.

Reported-by: syzbot+e3f23ce40269a4c9053a@syzkaller.appspotmail.com
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-12-11 13:38:01 +01:00
..
acl.c
posix_acl: Clear SGID bit when setting file permissions
2016-09-22 10:55:32 +02:00
acl.h
gfs2: Switch to generic xattr handlers
2016-05-12 22:28:05 -04:00
aops.c
gfs2: Remove dirty buffer warning from gfs2_releasepage
2016-08-18 08:57:04 -05:00
bmap.c
gfs2: take jdata unstuff into account in do_grow
2019-12-05 15:34:36 +01:00
bmap.h
…
dentry.c
gfs2: Lock holder cleanup
2016-06-27 09:47:09 -05:00
dir.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-10-10 20:16:43 -07:00
dir.h
…
export.c
gfs2: Get rid of gfs2_ilookup
2016-06-27 09:47:08 -05:00
file.c
gfs2: Fix fallocate chunk size
2018-05-30 07:50:47 +02:00
gfs2.h
…
glock.c
gfs2: Wake up when sd_glock_disposal becomes zero
2020-11-18 18:26:23 +01:00
glock.h
gfs2: Lock holder cleanup
2016-06-27 09:47:09 -05:00
glops.c
GFS2: Get rid of dead code in inode_go_demote_ok
2016-04-05 11:59:18 -04:00
glops.h
…
incore.h
gfs2: Fix glock rhashtable rcu bug
2017-07-12 15:01:06 +02:00
inode.c
gfs2_atomic_open(): fix O_EXCL|O_CREAT handling on cold dcache
2020-03-20 09:07:44 +01:00
inode.h
GFS2: use BIT() macro
2016-08-02 12:05:27 -05:00
Kconfig
…
lock_dlm.c
gfs2: Fix sign extension bug in gfs2_update_stats
2019-05-31 06:48:12 -07:00
log.c
gfs2: use bio op accessors
2016-06-07 13:41:38 -06:00
log.h
…
lops.c
Merge branch 'for-4.8/core' of git://git.kernel.dk/linux-block
2016-07-26 15:03:07 -07:00
lops.h
gfs2: use bio op accessors
2016-06-07 13:41:38 -06:00
main.c
gfs2: fix to detect failure of register_shrinker
2016-09-21 12:09:40 -05:00
Makefile
…
meta_io.c
gfs2: Fix extended attribute readahead optimization
2016-08-18 11:36:41 -05:00
meta_io.h
GFS2: Refactor gfs2_remove_from_journal
2016-05-06 11:27:27 -05:00
ops_fstype.c
gfs2: add validation checks for size of superblock
2020-11-10 10:23:55 +01:00
quota.c
gfs2: move privileged user check to gfs2_quota_lock_check
2020-06-03 08:16:35 +02:00
quota.h
gfs2: move privileged user check to gfs2_quota_lock_check
2020-06-03 08:16:35 +02:00
recovery.c
GFS2: Fix gfs2_replay_incr_blk for multiple journal sizes
2016-07-21 13:02:44 -05:00
recovery.h
GFS2: Fix gfs2_replay_incr_blk for multiple journal sizes
2016-07-21 13:02:44 -05:00
rgrp.c
gfs2: check for empty rgrp tree in gfs2_ri_update
2020-12-11 13:38:01 +01:00
rgrp.h
GFS2: Make rgrp reservations part of the gfs2_inode structure
2015-12-14 12:16:38 -06:00
super.c
GFS2: Flush the GFS2 delete workqueue before stopping the kernel threads
2019-11-25 09:53:47 +01:00
super.h
…
sys.c
…
sys.h
…
trace_gfs2.h
gfs2: Make statistics unsigned, suitable for use with do_div()
2015-09-03 13:33:32 -05:00
trans.c
gfs2: Add missing else in trans_add_meta/data
2015-10-01 12:00:59 -05:00
trans.h
…
util.c
GFS2: ignore unlock failures after withdraw
2016-03-24 08:28:48 -04:00
util.h
GFS2: Make rgrp reservations part of the gfs2_inode structure
2015-12-14 12:16:38 -06:00
xattr.c
fs: Replace CURRENT_TIME with current_time() for inode timestamps
2016-09-27 21:06:21 -04:00
xattr.h
gfs2: Remove gfs2_xattr_acl_chmod
2015-12-06 21:25:17 -05:00