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Bob Peterson 13c66d2d2b gfs2: clean up iopen glock mess in gfs2_create_inode 
[ Upstream commit 2c47c1be51 ]

Before this patch, gfs2_create_inode had a use-after-free for the
iopen glock in some error paths because it did this:

	gfs2_glock_put(io_gl);
fail_gunlock2:
	if (io_gl)
		clear_bit(GLF_INODE_CREATING, &io_gl->gl_flags);

In some cases, the io_gl was used for create and only had one
reference, so the glock might be freed before the clear_bit().
This patch tries to straighten it out by only jumping to the
error paths where iopen is properly set, and moving the
gfs2_glock_put after the clear_bit.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-10-01 13:12:30 +02:00
..
acl.c gfs2: preserve i_mode if __gfs2_set_acl() fails 2017-08-31 07:53:15 -05:00
acl.h
aops.c gfs2: forcibly flush ail to relieve memory pressure 2017-08-10 10:51:03 -05:00
bmap.c gfs2: take jdata unstuff into account in do_grow 2019-12-05 15:37:32 +01:00
bmap.h
dentry.c gfs2: Lock holder cleanup 2016-06-27 09:47:09 -05:00
dir.c We've got a whopping 29 GFS2 patches for this merge window, mainly 2017-09-06 11:42:31 -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 07:52:35 +02:00
gfs2.h
glock.c Revert "gfs2: Don't demote a glock until its revokes are written" 2020-05-27 16:43:10 +02:00
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 10:46:33 +02:00
glops.h
incore.h gfs2: Silence gcc format-truncation warning 2017-08-25 10:59:21 -05:00
inode.c gfs2: clean up iopen glock mess in gfs2_create_inode 2020-10-01 13:12:30 +02:00
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 06:47:11 -07:00
log.c gfs2: initialize transaction tr_ailX_lists earlier 2020-09-23 10:46:33 +02:00
log.h gfs2: fix glock reference problem in gfs2_trans_remove_revoke 2019-12-17 20:40:01 +01:00
lops.c gfs2: fix glock reference problem in gfs2_trans_remove_revoke 2019-12-17 20:40:01 +01:00
lops.h
main.c GFS2: Remove gl_list from glock structure 2017-06-12 14:39:12 -05:00
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 Merge branch 'for-4.14/block' of git://git.kernel.dk/linux-block 2017-09-07 11:59:42 -07:00
meta_io.h
ops_fstype.c gfs2: read-only mounts should grab the sd_freeze_gl glock 2020-07-22 09:22:21 +02:00
quota.c gfs2: move privileged user check to gfs2_quota_lock_check 2020-06-03 08:17:52 +02:00
quota.h gfs2: move privileged user check to gfs2_quota_lock_check 2020-06-03 08:17:52 +02:00
recovery.c VFS: Convert sb->s_flags & MS_RDONLY to sb_rdonly(sb) 2017-07-17 08:45:34 +01:00
recovery.h GFS2: Fix gfs2_replay_incr_blk for multiple journal sizes 2016-07-21 13:02:44 -05:00
rgrp.c gfs2: Fix marking bitmaps non-full 2019-12-01 09:13:17 +01:00
rgrp.h GFS2: Non-recursive delete 2017-04-19 08:25:43 -04:00
super.c GFS2: Flush the GFS2 delete workqueue before stopping the kernel threads 2019-11-24 08:23:25 +01:00
super.h
sys.c VFS: Convert sb->s_flags & MS_RDONLY to sb_rdonly(sb) 2017-07-17 08:45:34 +01:00
sys.h
trace_gfs2.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
trans.c gfs2: initialize transaction tr_ailX_lists earlier 2020-09-23 10:46:33 +02:00
trans.h
util.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
util.h GFS2: Fix up some sparse warnings 2017-08-25 18:47:18 -05:00
xattr.c gfs2: don't return ENODATA in __gfs2_xattr_set unless replacing 2017-08-31 07:43:03 -05:00
xattr.h