WARNING in f2fs_is_valid

WARNING in f2fs_is_valid_blkaddr
Status: upstream: reported C repro on 2020/09/21 09:51
Reported-by: syzbot+763ae12a2ede1d99d4dc@syzkaller.appspotmail.com
First crash: 163d, last: 3d13h

Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: WARNING in sysfs_warn_dup (log)
Repro: C syz .config

similar bugs (2):
Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.19	WARNING in f2fs_is_valid_blkaddr	C			293	21m	161d	0/1	upstream: reported C repro on 2020/09/21 17:33
linux-4.14	WARNING in f2fs_is_valid_blkaddr	C			348	21h19m	167d	0/1	upstream: reported C repro on 2020/09/15 10:39

Sample crash report:

F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0)
F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
F2FS-fs (loop0): invalid crc_offset: 0
F2FS-fs (loop0): access invalid blkaddr:1
------------[ cut here ]------------
WARNING: CPU: 1 PID: 8496 at fs/f2fs/checkpoint.c:189 arch_set_bit arch/x86/include/asm/bitops.h:55 [inline]
WARNING: CPU: 1 PID: 8496 at fs/f2fs/checkpoint.c:189 set_bit include/asm-generic/bitops/instrumented-atomic.h:29 [inline]
WARNING: CPU: 1 PID: 8496 at fs/f2fs/checkpoint.c:189 set_sbi_flag fs/f2fs/f2fs.h:1843 [inline]
WARNING: CPU: 1 PID: 8496 at fs/f2fs/checkpoint.c:189 f2fs_is_valid_blkaddr+0xdb2/0xf80 fs/f2fs/checkpoint.c:188
Modules linked in:
CPU: 1 PID: 8496 Comm: syz-executor391 Not tainted 5.10.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:f2fs_is_valid_blkaddr+0xdb2/0xf80 fs/f2fs/checkpoint.c:189
Code: 89 e2 48 89 df 48 c7 c6 00 70 91 89 e8 84 34 5e 05 48 8d bb b8 00 00 00 be 08 00 00 00 e8 96 9e 5a fe f0 80 8b b8 00 00 00 04 <0f> 0b e9 af f7 ff ff e8 82 c0 5a fe e9 a5 fa ff ff e8 88 c0 5a fe
RSP: 0018:ffffc90000f17718 EFLAGS: 00010206
RAX: 0000000000000001 RBX: ffff8880279b4000 RCX: ffffffff835681ca
RDX: ffffed1004f36818 RSI: 0000000000000008 RDI: ffff8880279b40b8
RBP: 0000000000000007 R08: 0000000000000001 R09: ffff8880279b40bf
R10: ffffed1004f36817 R11: 0000000000000000 R12: 0000000000000001
R13: ffff8880128f9000 R14: 0000000000001400 R15: 0000000000000400
FS:  0000000002664880(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000043f480 CR3: 000000001b31b000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 f2fs_get_node_info+0x4b4/0xbc0 fs/f2fs/node.c:571
 read_node_page+0x4a6/0x9b0 fs/f2fs/node.c:1294
 __get_node_page.part.0+0xa2/0xac0 fs/f2fs/node.c:1354
 __get_node_page fs/f2fs/node.c:35 [inline]
 f2fs_get_node_page+0x109/0x180 fs/f2fs/node.c:1399
 do_read_inode fs/f2fs/inode.c:346 [inline]
 f2fs_iget+0x233/0x4d70 fs/f2fs/inode.c:496
 f2fs_fill_super+0x3e48/0x7410 fs/f2fs/super.c:3729
 mount_bdev+0x32e/0x3f0 fs/super.c:1419
 legacy_get_tree+0x105/0x220 fs/fs_context.c:592
 vfs_get_tree+0x89/0x2f0 fs/super.c:1549
 do_new_mount fs/namespace.c:2875 [inline]
 path_mount+0x13ad/0x20c0 fs/namespace.c:3205
 do_mount fs/namespace.c:3218 [inline]
 __do_sys_mount fs/namespace.c:3426 [inline]
 __se_sys_mount fs/namespace.c:3403 [inline]
 __x64_sys_mount+0x27f/0x300 fs/namespace.c:3403
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x44766a
Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 fd ad fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 da ad fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007fffd2a3bc68 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fffd2a3bcc0 RCX: 000000000044766a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fffd2a3bc80
RBP: 00007fffd2a3bc80 R08: 00007fffd2a3bcc0 R09: 00007fff00000015
R10: 0000000000000000 R11: 0000000000000297 R12: 000000000000002f
R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003

Crashes (359):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-upstream-kasan-gce-selinux-root	2020/11/06 01:48	upstream	521b619a	64069d48	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2020/10/09 15:37	upstream	583090b1	d81b165e	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2020/10/03 11:37	upstream	d3d45f82	2653fa43	.config	log	report	syz	C
ci-upstream-kasan-gce-selinux-root	2020/10/02 10:26	upstream	fcadab74	9602ddf4	.config	log	report	syz	C
ci-upstream-kasan-gce-root	2020/09/30 18:08	upstream	02de58b2	8516f6d3	.config	log	report	syz	C
ci-upstream-kasan-gce-smack-root	2020/09/24 03:17	upstream	805c6d3c	287cd75a	.config	log	report	syz	C
ci-upstream-kasan-gce-selinux-root	2020/09/20 17:33	upstream	325d0eab	9564d2e9	.config	log	report	syz	C
ci-upstream-linux-next-kasan-gce-root	2020/11/01 04:26	linux-next	4e78c578	8bc4594f	.config	log	report	syz	C
ci-upstream-kasan-gce-selinux-root	2021/02/19 11:36	upstream	f40ddce8	14052202	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-upstream-kasan-gce-smack-root	2021/02/18 23:53	upstream	f40ddce8	14052202	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-upstream-kasan-gce-root	2021/02/18 15:33	upstream	f40ddce8	14052202	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-upstream-kasan-gce-smack-root	2021/02/15 22:12	upstream	f40ddce8	98682e5e	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-upstream-kasan-gce-root	2021/02/15 07:01	upstream	f40ddce8	98682e5e	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-upstream-kasan-gce-selinux-root	2021/02/14 07:41	upstream	ac30d8ce	98682e5e	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-upstream-kasan-gce-selinux-root	2021/02/13 13:58	upstream	c6d8570e	98682e5e	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-upstream-kasan-gce-root	2021/02/11 13:23	upstream	291009f6	a52ee10a	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-upstream-kasan-gce-root	2021/02/09 05:08	upstream	e0756cfc	2bd9619f	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-upstream-kasan-gce-root	2021/02/06 09:08	upstream	1e0d27fc	23a562df	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-upstream-kasan-gce-root	2021/02/05 15:15	upstream	dd86e7fa	23a562df	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-upstream-kasan-gce-smack-root	2021/02/05 02:16	upstream	5c279c4c	23a562df	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-upstream-kasan-gce-smack-root	2021/02/01 19:58	upstream	1048ba83	e6b95f32	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-upstream-kasan-gce-smack-root	2021/01/30 19:14	upstream	0e9bcda5	fc9fd31e	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-upstream-kasan-gce-selinux-root	2021/01/29 07:06	upstream	e5ff2cb9	7df34f59	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-upstream-kasan-gce-root	2021/01/24 10:15	upstream	e1ae4b0b	52e37319	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-upstream-kasan-gce-smack-root	2021/01/24 02:48	upstream	e1ae4b0b	52e37319	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-upstream-kasan-gce-smack-root	2021/01/23 16:32	upstream	fe75a218	52e37319	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-upstream-kasan-gce-smack-root	2021/01/22 15:27	upstream	9f29bd8b	d4f4eca5	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-upstream-kasan-gce-selinux-root	2021/01/22 02:27	upstream	9f29bd8b	d4f4eca5	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-upstream-kasan-gce-root	2021/01/21 12:31	upstream	9791581c	d4f4eca5	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-upstream-kasan-gce-smack-root	2021/01/21 05:07	upstream	75439bc4	d4f4eca5	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-upstream-kasan-gce-root	2021/01/19 00:55	upstream	19c329f6	63631df1	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-qemu2-arm64-mte	2021/02/26 16:10	upstream	2c87f7a3	4c37c133	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-qemu2-arm64	2021/02/23 21:25	upstream	3b9cdafb	fcc6d71b	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-qemu2-arm64	2021/02/07 08:08	upstream	825b5991	2ce644fc	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-qemu2-arm64-compat	2021/02/06 02:08	upstream	17fbcdf9	23a562df	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-qemu2-arm64-mte	2021/01/28 14:57	upstream	76c057c8	eefc07f2	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-upstream-linux-next-kasan-gce-root	2021/01/17 23:23	linux-next	b3a3cbde	813be542	.config	log	report			info	WARNING in f2fs_is_valid_blkaddr
ci-upstream-kasan-gce-root	2021/01/16 18:24	upstream	1d94330a	65a7a854	.config	log	report			info
ci-upstream-kasan-gce-root	2021/01/16 15:28	upstream	1d94330a	65a7a854	.config	log	report			info
ci-upstream-kasan-gce-root	2021/01/12 07:26	upstream	a0d54b4f	2c1f2513	.config	log	report			info
ci-qemu-upstream	2021/01/10 22:17	upstream	0653161f	2c1f2513	.config	log	report			info
ci-upstream-kasan-gce-selinux-root	2021/01/04 18:33	upstream	e71ba945	79264ae3	.config	log	report			info
ci-upstream-kasan-gce-selinux-root	2021/01/03 22:05	upstream	3516bd72	79264ae3	.config	log	report			info
ci-upstream-kasan-gce-root	2021/01/03 13:46	upstream	3516bd72	79264ae3	.config	log	report			info
ci-upstream-kasan-gce-root	2021/01/03 09:51	upstream	3516bd72	79264ae3	.config	log	report			info
ci-upstream-kasan-gce-root	2021/01/01 00:43	upstream	f6e1ea19	79264ae3	.config	log	report			info
ci-upstream-kasan-gce-root	2020/12/29 08:22	upstream	dea8dcf2	8259d56c	.config	log	report			info
ci-upstream-kasan-gce-selinux-root	2020/12/25 08:22	upstream	3913d00a	c2c1d1dd	.config	log	report			info
ci-upstream-kasan-gce-selinux-root	2020/12/22 11:35	upstream	8653b778	04201c06	.config	log	report			info
ci-upstream-kasan-gce-smack-root	2020/12/14 05:50	upstream	6bff9bb8	b22a7ec3	.config	log	report			info
ci-qemu-upstream	2020/12/09 09:54	upstream	a68a0262	99917735	.config	log	report			info
ci-qemu-upstream	2020/12/09 03:25	upstream	7d8761ba	40cc414d	.config	log	report			info
ci-upstream-kasan-gce-smack-root	2020/12/06 09:36	upstream	33256ce1	f12ba0c5	.config	log	report			info
ci-upstream-kasan-gce-root	2020/12/04 23:55	upstream	e87297fa	20366b87	.config	log	report			info
ci-upstream-kasan-gce-root	2020/12/04 01:37	upstream	34816d20	e6b0d314	.config	log	report			info
ci-upstream-kasan-gce-smack-root	2020/12/03 23:04	upstream	34816d20	e6b0d314	.config	log	report			info
ci-upstream-kasan-gce-root	2020/12/03 16:07	upstream	34816d20	e6b0d314	.config	log	report			info
ci-upstream-kasan-gce-root	2020/12/03 14:59	upstream	34816d20	e6b0d314	.config	log	report			info
ci-upstream-kasan-gce-root	2020/12/03 13:20	upstream	34816d20	e6b0d314	.config	log	report			info
ci-qemu-upstream	2020/11/29 01:51	upstream	45e885c4	a0092f9d	.config	log	report			info
ci-upstream-kasan-gce-root	2020/11/23 23:06	upstream	418baf2c	878fb17a	.config	log	report			info
ci-upstream-kasan-gce-root	2020/11/23 18:16	upstream	418baf2c	878fb17a	.config	log	report			info
ci-qemu-upstream	2020/09/20 03:09	upstream	325d0eab	53ce8104	.config	log	report			info
ci-qemu-upstream-386	2020/12/27 14:59	upstream	f838f8d2	2242f77f	.config	log	report			info
ci-upstream-linux-next-kasan-gce-root	2020/11/27 16:04	linux-next	6147c83f	5018c946	.config	log	report			info
ci-upstream-linux-next-kasan-gce-root	2020/11/25 00:05	linux-next	62918e6f	e34b696c	.config	log	report			info
ci-upstream-linux-next-kasan-gce-root	2020/11/23 13:27	linux-next	62918e6f	0d27f508	.config	log	report			info
ci-upstream-linux-next-kasan-gce-root	2020/11/22 02:11	linux-next	95065cb5	68068804	.config	log	report			info