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Bob Peterson 6790f8b937 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 13:25:04 +01:00
..
acl.c
gfs2: using posix_acl_xattr_size instead of posix_acl_to_xattr
2018-07-24 20:02:11 +02:00
acl.h
…
aops.c
gfs2: use iomap_readpage for blocksize == PAGE_SIZE
2018-07-25 00:08:49 +02:00
aops.h
gfs2: iomap buffered write support
2018-07-02 16:27:17 +01:00
bmap.c
gfs2: Another gfs2_walk_metadata fix
2020-05-20 08:18:41 +02:00
bmap.h
gfs2: Iomap cleanups and improvements
2018-06-04 07:56:51 -05:00
dentry.c
…
dir.c
gfs2: remove redundant variable 'moved'
2018-07-25 00:08:59 +02:00
dir.h
…
export.c
…
file.c
gfs2: fix O_SYNC write handling
2020-02-11 04:34:07 -08:00
gfs2.h
…
glock.c
gfs2: Wake up when sd_glock_disposal becomes zero
2020-11-10 12:35:58 +01:00
glock.h
gfs2: gfs2_evict_inode: Put glocks asynchronously
2017-08-10 10:45:21 -05:00
glops.c
gfs2: initialize transaction tr_ailX_lists earlier
2020-09-23 12:10:56 +02:00
glops.h
…
incore.h
gfs2: slow the deluge of io error messages
2019-11-24 08:20:26 +01:00
inode.c
gfs2: clean up iopen glock mess in gfs2_create_inode
2020-10-01 13:14:28 +02:00
inode.h
gfs2: Implement SEEK_HOLE / SEEK_DATA via iomap
2017-10-31 14:26:35 +01:00
Kconfig
gfs2: Fix the crc32c dependency
2018-02-01 11:25:31 -07:00
lock_dlm.c
gfs2: Fix sign extension bug in gfs2_update_stats
2019-05-31 06:46:02 -07:00
log.c
gfs2: initialize transaction tr_ailX_lists earlier
2020-09-23 12:10:56 +02:00
log.h
gfs2: fix glock reference problem in gfs2_trans_remove_revoke
2019-12-17 20:35:55 +01:00
lops.c
gfs2: fix glock reference problem in gfs2_trans_remove_revoke
2019-12-17 20:35:55 +01:00
lops.h
GFS2: Introduce new gfs2_log_header_v2
2018-01-23 07:38:53 -07:00
main.c
gfs2: Fix wrong error handling in init_gfs2_fs()
2017-11-27 10:47:22 -06:00
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: Don't withdraw under a spin lock
2018-06-21 07:39:44 -05:00
meta_io.h
…
ops_fstype.c
gfs2: add validation checks for size of superblock
2020-11-05 11:08:44 +01:00
quota.c
gfs2: move privileged user check to gfs2_quota_lock_check
2020-06-03 08:19:28 +02:00
quota.h
gfs2: move privileged user check to gfs2_quota_lock_check
2020-06-03 08:19:28 +02:00
recovery.c
GFS2: Fix recovery issues for spectators
2018-07-25 00:06:24 +02:00
recovery.h
…
rgrp.c
gfs2: check for empty rgrp tree in gfs2_ri_update
2020-12-11 13:25:04 +01:00
rgrp.h
…
super.c
gfs2: Add missing truncate_inode_pages_final for sd_aspace
2020-11-18 19:18:44 +01:00
super.h
…
sys.c
GFS2: Fix recovery issues for spectators
2018-07-25 00:06:24 +02:00
sys.h
…
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 12:10:56 +02:00
trans.h
gfs2: Eliminate redundant ip->i_rgd
2018-07-05 17:47:16 +02:00
util.c
gfs2: slow the deluge of io error messages
2019-11-24 08:20:26 +01:00
util.h
gfs2: Don't withdraw under a spin lock
2018-06-21 07:39:44 -05:00
xattr.c
gfs2: Get rid of gfs2_ea_strlen
2018-08-03 13:20:02 +01:00
xattr.h
…