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Bob Peterson d11e5b96ef gfs2: fix scheduling while atomic bug in glocks 
commit 20265d9a67e40eafd39a8884658ca2e36f05985d upstream.

Before this patch, in the unlikely event that gfs2_glock_dq encountered
a withdraw, it would do a wait_on_bit to wait for its journal to be
recovered, but it never released the glock's spin_lock, which caused a
scheduling-while-atomic error.

This patch unlocks the lockref spin_lock before waiting for recovery.

Fixes: 601ef0d52e96 ("gfs2: Force withdraw to replay journals and wait for it to finish")
Cc: stable@vger.kernel.org # v5.7+
Reported-by: Alexander Aring <aahringo@redhat.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>
2021-06-10 13:39:25 +02:00
..
acl.c
gfs2: Change inode qa_data to allow multiple users
2020-03-27 14:08:04 -05:00
acl.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398
2019-06-05 17:37:12 +02:00
aops.c
gfs2: Fix case in which ail writes are done to jdata holes
2020-11-12 18:55:20 +01:00
aops.h
gfs2: mark stuffed_readpage static
2019-07-03 14:45:18 +02:00
bmap.c
gfs2: Recursive gfs2_quota_hold in gfs2_iomap_end
2021-03-04 11:38:44 +01:00
bmap.h
gfs2: use iomap for buffered I/O in ordered and writeback mode
2020-10-14 23:54:42 +02:00
dentry.c
gfs2: untangle the logic in gfs2_drevalidate
2019-09-03 09:42:41 +02:00
dir.c
mm: remove the pgprot argument to __vmalloc
2020-06-02 10:59:11 -07:00
dir.h
gfs2: Delete an unnecessary check before brelse()
2019-09-04 20:22:17 +02:00
export.c
gfs2: Minor gfs2_lookup_by_inum cleanup
2020-06-05 20:19:21 +02:00
file.c
Changes in gfs2:
2020-08-10 18:22:43 -07:00
gfs2.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398
2019-06-05 17:37:12 +02:00
glock.c
gfs2: fix scheduling while atomic bug in glocks
2021-06-10 13:39:25 +02:00
glock.h
Merge branch 'gfs2-iopen' into for-next
2020-06-05 21:25:36 +02:00
glops.c
gfs2: Don't freeze the file system during unmount
2020-11-25 18:12:08 +01:00
glops.h
gfs2: Split up gfs2_meta_sync into inode and rgrp versions
2020-10-29 22:16:46 +01:00
incore.h
gfs2: set lockdep subclass for iopen glocks
2020-11-24 23:45:58 +01:00
inode.c
gfs2: Fix deadlock between gfs2_{create_inode,inode_lookup} and delete_work_func
2020-12-01 00:21:10 +01:00
inode.h
gfs2: Minor gfs2_lookup_by_inum cleanup
2020-06-05 20:19:21 +02:00
Kconfig
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
lock_dlm.c
gfs2: Don't skip dlm unlock if glock has an lvb
2021-03-04 11:38:43 +01:00
log.c
gfs2: fix use-after-free in trans_drain
2021-03-30 14:31:49 +02:00
log.h
gfs2: Wipe jdata and ail1 in gfs2_journal_wipe, formerly gfs2_meta_wipe
2020-10-15 14:29:03 +02:00
lops.c
gfs2: Split up gfs2_meta_sync into inode and rgrp versions
2020-10-29 22:16:46 +01:00
lops.h
gfs2: Split up gfs2_meta_sync into inode and rgrp versions
2020-10-29 22:16:46 +01:00
main.c
gfs2: eliminate GIF_ORDERED in favor of list_empty
2020-07-03 12:05:34 +02:00
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: Wipe jdata and ail1 in gfs2_journal_wipe, formerly gfs2_meta_wipe
2020-10-15 14:29:03 +02:00
meta_io.h
gfs2: Wipe jdata and ail1 in gfs2_journal_wipe, formerly gfs2_meta_wipe
2020-10-15 14:29:03 +02:00
ops_fstype.c
gfs2: move freeze glock outside the make_fs_rw and _ro functions
2021-03-25 09:04:14 +01:00
quota.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
quota.h
gfs2: move privileged user check to gfs2_quota_lock_check
2020-05-08 18:47:58 +02:00
recovery.c
gfs2: Add common helper for holding and releasing the freeze glock
2021-03-25 09:04:14 +01:00
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
2020-11-25 18:10:55 +01:00
rgrp.h
gfs2: Fix NULL pointer dereference in gfs2_rgrp_dump
2020-10-14 23:54:43 +02:00
super.c
gfs2: report "already frozen/thawed" errors
2021-04-16 11:43:20 +02:00
super.h
gfs2: lookup local statfs inodes prior to journal recovery
2020-10-23 15:47:14 +02:00
sys.c
gfs2: use-after-free in sysfs deregistration
2020-10-14 23:54:43 +02:00
sys.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398
2019-06-05 17:37:12 +02:00
trace_gfs2.h
gfs2: eliminate GLF_QUEUED flag in favor of list_empty(gl_holders)
2020-10-15 17:04:53 +02:00
trans.c
gfs2: fix use-after-free in trans_drain
2021-03-30 14:31:49 +02:00
trans.h
gfs2: new slab for transactions
2020-06-05 21:24:25 +02:00
util.c
gfs2: bypass signal_our_withdraw if no journal
2021-03-25 09:04:14 +01:00
util.h
gfs2: Add common helper for holding and releasing the freeze glock
2021-03-25 09:04:14 +01:00
xattr.c
gfs2: Change inode qa_data to allow multiple users
2020-03-27 14:08:04 -05:00
xattr.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 398
2019-06-05 17:37:12 +02:00