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Bob Peterson cd928d387b 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 13:23:32 +01:00
..
acl.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398
2019-06-05 17:37:12 +02:00
acl.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398
2019-06-05 17:37:12 +02:00
aops.c
gfs2: Minor PAGE_SIZE arithmetic cleanups
2019-09-04 20:22:06 +02:00
aops.h
gfs2: mark stuffed_readpage static
2019-07-03 14:45:18 +02:00
bmap.c
gfs2: Never call gfs2_block_zero_range with an open transaction
2020-08-26 10:40:48 +02:00
bmap.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398
2019-06-05 17:37:12 +02:00
dentry.c
gfs2: untangle the logic in gfs2_drevalidate
2019-09-03 09:42:41 +02:00
dir.c
gfs2: Delete an unnecessary check before brelse()
2019-09-04 20:22:17 +02:00
dir.h
gfs2: Delete an unnecessary check before brelse()
2019-09-04 20:22:17 +02:00
export.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398
2019-06-05 17:37:12 +02:00
file.c
gfs2: fix O_SYNC write handling
2020-02-11 04:35:35 -08:00
gfs2.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398
2019-06-05 17:37:12 +02:00
glock.c
gfs2: Wake up when sd_glock_disposal becomes zero
2020-11-10 12:37:27 +01:00
glock.h
gfs2: Use async glocks for rename
2019-09-04 20:22:17 +02:00
glops.c
gfs2: initialize transaction tr_ailX_lists earlier
2020-09-23 12:40:33 +02:00
glops.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398
2019-06-05 17:37:12 +02:00
incore.h
gfs2: use-after-free in sysfs deregistration
2020-11-05 11:43:21 +01:00
inode.c
gfs2: clean up iopen glock mess in gfs2_create_inode
2020-10-01 13:17:20 +02:00
inode.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398
2019-06-05 17:37:12 +02:00
Kconfig
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
lock_dlm.c
gfs2: Fix recovery slot bumping
2019-09-03 09:42:41 +02:00
log.c
gfs2: initialize transaction tr_ailX_lists earlier
2020-09-23 12:40:33 +02:00
log.h
gfs2: Do log_flush in gfs2_ail_empty_gl even if ail list is empty
2020-04-17 10:50:03 +02:00
lops.c
gfs2: Even more gfs2_find_jhead fixes
2020-06-17 16:40:21 +02:00
lops.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398
2019-06-05 17:37:12 +02:00
main.c
SPDX update for 5.2-rc4
2019-06-08 12:52:42 -07:00
Makefile
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
meta_io.c
gfs2: Rename SDF_SHUTDOWN to SDF_WITHDRAWN
2019-06-27 21:26:35 +02:00
meta_io.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398
2019-06-05 17:37:12 +02:00
ops_fstype.c
gfs2: add validation checks for size of superblock
2020-11-05 11:43:21 +01:00
quota.c
gfs2: move privileged user check to gfs2_quota_lock_check
2020-06-03 08:21:09 +02:00
quota.h
gfs2: move privileged user check to gfs2_quota_lock_check
2020-06-03 08:21:09 +02:00
recovery.c
gfs2: log which portion of the journal is replayed
2019-06-27 21:03:58 +02:00
recovery.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398
2019-06-05 17:37:12 +02:00
rgrp.c
gfs2: check for empty rgrp tree in gfs2_ri_update
2020-12-11 13:23:32 +01:00
rgrp.h
gfs2: dump fsid when dumping glock problems
2019-06-27 21:27:43 +02:00
super.c
gfs2: Add missing truncate_inode_pages_final for sd_aspace
2020-11-18 19:20:22 +01:00
super.h
gfs2: Convert gfs2 to fs_context
2019-09-18 22:47:05 -04:00
sys.c
gfs2: use-after-free in sysfs deregistration
2020-11-05 11:43:21 +01:00
sys.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398
2019-06-05 17:37:12 +02:00
trace_gfs2.h
gfs2: eliminate rs_inum and reduce the size of gfs2 inodes
2018-06-21 07:39:31 -05:00
trans.c
gfs2: initialize transaction tr_ailX_lists earlier
2020-09-23 12:40:33 +02:00
trans.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398
2019-06-05 17:37:12 +02:00
util.c
gfs2: Fix possible fs name overflows
2019-09-03 09:42:41 +02:00
util.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398
2019-06-05 17:37:12 +02:00
xattr.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398
2019-06-05 17:37:12 +02:00
xattr.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398
2019-06-05 17:37:12 +02:00