KMSAN: uninit-value in ext4_inode_journal

KMSAN: uninit-value in ext4_inode_journal_mode (2)
Status: upstream: reported on 2022/01/07 15:40
Reported-by: syzbot+11542230634289d7f1f6@syzkaller.appspotmail.com
First crash: 44d, last: 2h16m

similar bugs (2):
Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	KMSAN: uninit-value in ext4_inode_journal_mode				70	320d	354d	0/22	auto-closed as invalid on 2021/06/10 23:10
upstream	KMSAN: uninit-value in udf_evict_inode (2)				12	2d00h	45d	19/22	upstream: reported on 2021/12/13 15:28

Sample crash report:

=====================================================
BUG: KMSAN: uninit-value in ext4_inode_journal_mode+0x29f/0x510 fs/ext4/ext4_jbd2.c:16
 ext4_inode_journal_mode+0x29f/0x510 fs/ext4/ext4_jbd2.c:16
 ext4_should_journal_data fs/ext4/ext4_jbd2.h:465 [inline]
 ext4_evict_inode+0x1b5/0x2d10 fs/ext4/inode.c:202
 evict+0x4f4/0xdd0 fs/inode.c:590
 iput_final fs/inode.c:1670 [inline]
 iput+0xc53/0x1100 fs/inode.c:1696
 __ext4_new_inode+0xf32/0x8440 fs/ext4/ialloc.c:1362
 ext4_create+0x455/0x940 fs/ext4/namei.c:2746
 lookup_open fs/namei.c:3280 [inline]
 open_last_lookups fs/namei.c:3350 [inline]
 path_openat+0x2e88/0x5ea0 fs/namei.c:3556
 do_filp_open+0x306/0x760 fs/namei.c:3586
 do_sys_openat2+0x263/0x8f0 fs/open.c:1212
 do_sys_open fs/open.c:1228 [inline]
 __do_compat_sys_openat fs/open.c:1288 [inline]
 __se_compat_sys_openat fs/open.c:1286 [inline]
 __ia32_compat_sys_openat+0x353/0x3c0 fs/open.c:1286
 do_syscall_32_irqs_on arch/x86/entry/common.c:114 [inline]
 __do_fast_syscall_32+0x96/0xf0 arch/x86/entry/common.c:180
 do_fast_syscall_32+0x34/0x70 arch/x86/entry/common.c:205
 do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:248
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c

Uninit was created at:
 __alloc_pages+0xbbf/0x1090 mm/page_alloc.c:5409
 alloc_pages+0x8a5/0xb80
 alloc_slab_page mm/slub.c:1810 [inline]
 allocate_slab+0x287/0x1c10 mm/slub.c:1947
 new_slab mm/slub.c:2010 [inline]
 ___slab_alloc+0xb85/0x1e30 mm/slub.c:3039
 __slab_alloc mm/slub.c:3126 [inline]
 slab_alloc_node mm/slub.c:3217 [inline]
 slab_alloc mm/slub.c:3259 [inline]
 kmem_cache_alloc+0xbb3/0x11c0 mm/slub.c:3264
 ext4_alloc_inode+0x5e/0x870 fs/ext4/super.c:1295
 alloc_inode fs/inode.c:235 [inline]
 new_inode_pseudo+0xa6/0x5a0 fs/inode.c:944
 new_inode+0x5a/0x3c0 fs/inode.c:973
 __ext4_new_inode+0x3cb/0x8440 fs/ext4/ialloc.c:960
 ext4_symlink+0x90b/0x1a40 fs/ext4/namei.c:3293
 vfs_symlink+0x7a1/0xa40 fs/namei.c:4248
 do_symlinkat+0x370/0xad0 fs/namei.c:4277
 __do_sys_symlink fs/namei.c:4299 [inline]
 __se_sys_symlink fs/namei.c:4297 [inline]
 __ia32_sys_symlink+0x12b/0x170 fs/namei.c:4297
 do_syscall_32_irqs_on arch/x86/entry/common.c:114 [inline]
 __do_fast_syscall_32+0x96/0xf0 arch/x86/entry/common.c:180
 do_fast_syscall_32+0x34/0x70 arch/x86/entry/common.c:205
 do_SYSENTER_32+0x1b/0x20 arch/x86/entry/common.c:248
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c

CPU: 1 PID: 17955 Comm: syz-executor.2 Not tainted 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
=====================================================

Crashes (51):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Title
ci-upstream-kmsan-gce-386	2022/01/27 17:48	https://github.com/google/kmsan.git master	85cfd6e539bd	64a8e201	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2022/01/25 05:38	https://github.com/google/kmsan.git master	85cfd6e539bd	2cbffd88	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2022/01/21 17:29	https://github.com/google/kmsan.git master	85cfd6e539bd	214351e1	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2022/01/21 10:12	https://github.com/google/kmsan.git master	85cfd6e539bd	ab3d9f17	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2022/01/19 22:22	https://github.com/google/kmsan.git master	fa3879a274df	5da9499f	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2022/01/19 02:49	https://github.com/google/kmsan.git master	fa3879a274df	731a2d23	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2022/01/18 10:21	https://github.com/google/kmsan.git master	fa3879a274df	731a2d23	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2022/01/16 12:36	https://github.com/google/kmsan.git master	fa3879a274df	723cfaf0	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2022/01/15 19:01	https://github.com/google/kmsan.git master	fa3879a274df	723cfaf0	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2022/01/13 22:10	https://github.com/google/kmsan.git master	fa3879a274df	b8d780ab	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2022/01/12 04:41	https://github.com/google/kmsan.git master	fa3879a274df	44d1319a	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2022/01/11 16:17	https://github.com/google/kmsan.git master	fa3879a274df	1884f55a	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2022/01/11 12:24	https://github.com/google/kmsan.git master	fa3879a274df	1884f55a	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2022/01/11 07:19	https://github.com/google/kmsan.git master	81c325bbf94e	ddb0ab8c	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2022/01/05 19:46	https://github.com/google/kmsan.git master	81c325bbf94e	6acc789a	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2022/01/05 19:25	https://github.com/google/kmsan.git master	81c325bbf94e	6acc789a	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2022/01/04 20:32	https://github.com/google/kmsan.git master	81c325bbf94e	0a2584dd	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2022/01/04 13:18	https://github.com/google/kmsan.git master	81c325bbf94e	7f723fbe	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2022/01/04 07:56	https://github.com/google/kmsan.git master	81c325bbf94e	7f723fbe	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2022/01/03 20:34	https://github.com/google/kmsan.git master	81c325bbf94e	4a3f34f2	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2022/01/03 19:58	https://github.com/google/kmsan.git master	81c325bbf94e	4a3f34f2	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2022/01/01 04:39	https://github.com/google/kmsan.git master	81c325bbf94e	e1768e9c	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2022/01/01 04:02	https://github.com/google/kmsan.git master	81c325bbf94e	e1768e9c	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/31 09:35	https://github.com/google/kmsan.git master	81c325bbf94e	36bd2e48	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/31 06:33	https://github.com/google/kmsan.git master	81c325bbf94e	36bd2e48	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/31 00:35	https://github.com/google/kmsan.git master	81c325bbf94e	36bd2e48	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/30 13:47	https://github.com/google/kmsan.git master	81c325bbf94e	2e49f10d	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/29 16:54	https://github.com/google/kmsan.git master	81c325bbf94e	6cc879d4	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/29 16:29	https://github.com/google/kmsan.git master	81c325bbf94e	6cc879d4	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/29 14:54	https://github.com/google/kmsan.git master	81c325bbf94e	6cc879d4	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/29 14:18	https://github.com/google/kmsan.git master	81c325bbf94e	6cc879d4	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/28 17:27	https://github.com/google/kmsan.git master	81c325bbf94e	76c8cf06	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/28 06:37	https://github.com/google/kmsan.git master	81c325bbf94e	6b3c5e64	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/26 10:46	https://github.com/google/kmsan.git master	81c325bbf94e	e4f103c4	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/22 06:39	https://github.com/google/kmsan.git master	81c325bbf94e	6caa12e4	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/20 08:09	https://github.com/google/kmsan.git master	b0a8b5053e8b	021b36cb	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/19 20:05	https://github.com/google/kmsan.git master	b0a8b5053e8b	44068e19	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/17 18:47	https://github.com/google/kmsan.git master	b0a8b5053e8b	44068e19	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/17 11:57	https://github.com/google/kmsan.git master	b0a8b5053e8b	44068e19	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/17 06:48	https://github.com/google/kmsan.git master	b0a8b5053e8b	44068e19	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/17 06:31	https://github.com/google/kmsan.git master	b0a8b5053e8b	44068e19	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/17 03:42	https://github.com/google/kmsan.git master	b0a8b5053e8b	44068e19	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/16 23:50	https://github.com/google/kmsan.git master	d7f51389fa36	8dd6a5e3	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/16 14:05	https://github.com/google/kmsan.git master	cc9a49821cdb	8dd6a5e3	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/15 22:47	https://github.com/google/kmsan.git master	cc9a49821cdb	572bcb40	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/15 20:16	https://github.com/google/kmsan.git master	cc9a49821cdb	572bcb40	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/15 20:02	https://github.com/google/kmsan.git master	cc9a49821cdb	572bcb40	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/15 19:47	https://github.com/google/kmsan.git master	cc9a49821cdb	572bcb40	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/15 11:34	https://github.com/google/kmsan.git master	d1daf229a313	f752fb53	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/14 15:16	https://github.com/google/kmsan.git master	b1e1bb6f7a2e	d018dd31	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode
ci-upstream-kmsan-gce-386	2021/12/13 23:06	https://github.com/google/kmsan.git master	d82a8a8ca942	49ca1f59	.config	log	report	info	KMSAN: uninit-value in ext4_inode_journal_mode