syzbot


WARNING in ext4_write_inode (2)

Status: upstream: reported on 2022/02/12 00:47
Subsystems: ext4
[Documentation on labels]
Reported-by: syzbot+748cc361874fca7d33cc@syzkaller.appspotmail.com
First crash: 663d, last: 20d
Discussions (2)
Title Replies (including bot) Last reply
[syzbot] Monthly ext4 report (May 2023) 5 (6) 2023/06/03 06:20
[syzbot] WARNING in ext4_write_inode (2) 0 (1) 2022/02/12 00:47
Similar bugs (5)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 WARNING in ext4_write_inode 6 1379d 1380d 0/1 auto-closed as invalid on 2020/06/22 22:10
upstream WARNING in ext4_write_inode ext4 13 1369d 1376d 17/25 fixed on 2020/05/10 10:41
linux-5.15 WARNING in ext4_write_inode 1 250d 250d 0/3 auto-obsoleted due to no activity on 2023/07/26 10:16
linux-4.19 WARNING in ext4_write_inode 1 1379d 1379d 0/1 auto-closed as invalid on 2020/06/22 14:27
linux-6.1 WARNING in ext4_write_inode 5 173d 254d 0/3 auto-obsoleted due to no activity on 2023/09/21 16:26

Sample crash report:
WARNING: CPU: 0 PID: 101 at fs/ext4/inode.c:5179 ext4_write_inode+0x471/0x540 fs/ext4/inode.c:5179
Modules linked in:
CPU: 0 PID: 101 Comm: kswapd0 Not tainted 6.7.0-rc1-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:ext4_write_inode+0x471/0x540 fs/ext4/inode.c:5179
Code: 55 57 51 ff 4c 8b 64 24 20 4d 85 e4 74 0d e8 46 57 51 ff 4c 89 e7 e8 8e 77 c8 ff e8 39 57 51 ff e9 f3 fd ff ff e8 2f 57 51 ff <0f> 0b e9 e5 fd ff ff e8 93 48 a8 ff e9 1c fc ff ff e8 89 48 a8 ff
RSP: 0018:ffffc90000ddf120 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff920001bbe24 RCX: ffffffff823749f0
RDX: ffff8880177ea400 RSI: ffffffff82374db1 RDI: 0000000000000005
RBP: 0000000000000800 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000800 R11: 0000000000000201 R12: ffff888026dcdcb0
R13: ffffc90000ddf2e8 R14: dffffc0000000000 R15: ffff888026dcdcd8
FS:  0000000000000000(0000) GS:ffff88802c600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000031c2c000 CR3: 000000000cd77000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 write_inode fs/fs-writeback.c:1473 [inline]
 __writeback_single_inode+0xa81/0xe70 fs/fs-writeback.c:1690
 writeback_single_inode+0x2af/0x590 fs/fs-writeback.c:1746
 write_inode_now+0x16e/0x1e0 fs/fs-writeback.c:2788
 iput_final fs/inode.c:1762 [inline]
 iput.part.0+0x45a/0x7a0 fs/inode.c:1801
 iput+0x5c/0x80 fs/inode.c:1791
 dentry_unlink_inode+0x292/0x430 fs/dcache.c:401
 __dentry_kill+0x3b8/0x640 fs/dcache.c:607
 dentry_kill fs/dcache.c:745 [inline]
 dput+0x6de/0xf80 fs/dcache.c:913
 ovl_destroy_inode+0x3e/0x190 fs/overlayfs/super.c:189
 destroy_inode+0xc4/0x1b0 fs/inode.c:309
 iput_final fs/inode.c:1775 [inline]
 iput.part.0+0x55e/0x7a0 fs/inode.c:1801
 iput+0x5c/0x80 fs/inode.c:1791
 dentry_unlink_inode+0x292/0x430 fs/dcache.c:401
 __dentry_kill+0x3b8/0x640 fs/dcache.c:607
 shrink_dentry_list+0x22b/0x7d0 fs/dcache.c:1201
 prune_dcache_sb+0xeb/0x150 fs/dcache.c:1282
 super_cache_scan+0x327/0x540 fs/super.c:228
 do_shrink_slab+0x428/0x1120 mm/shrinker.c:435
 shrink_slab_memcg mm/shrinker.c:548 [inline]
 shrink_slab+0xa83/0x1310 mm/shrinker.c:626
 shrink_one+0x4f7/0x700 mm/vmscan.c:4724
 shrink_many mm/vmscan.c:4776 [inline]
 lru_gen_shrink_node mm/vmscan.c:4893 [inline]
 shrink_node+0x20cd/0x3790 mm/vmscan.c:5833
 kswapd_shrink_node mm/vmscan.c:6638 [inline]
 balance_pgdat+0xa32/0x1b80 mm/vmscan.c:6828
 kswapd+0x5be/0xbf0 mm/vmscan.c:7088
 kthread+0x33c/0x440 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>

Crashes (55):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/11/13 14:54 upstream b85ea95d0864 cb976f63 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2023/10/23 11:04 upstream 05d3ef8bba77 989a3687 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2023/04/16 11:59 upstream 3e7bb4f24617 ec410564 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in ext4_write_inode
2023/03/13 21:11 upstream fc89d7fb499b 026e2200 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in ext4_write_inode
2023/03/12 19:08 upstream 134231664868 5205ef30 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in ext4_write_inode
2023/01/16 18:36 upstream 5dc4c995db9e a63719e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in ext4_write_inode
2022/11/23 12:06 upstream eb7081409f94 75740b3f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in ext4_write_inode
2022/11/21 03:01 upstream 77c51ba552a1 5bb70014 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in ext4_write_inode
2022/11/05 15:26 upstream b208b9fbbcba 6d752409 .config console log report info ci-qemu-upstream WARNING in ext4_write_inode
2022/11/05 13:25 upstream 10d916c86eca 6d752409 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in ext4_write_inode
2022/11/05 01:34 upstream 64c3dd0b98f5 6d752409 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in ext4_write_inode
2022/10/27 15:15 upstream 98555239e4c3 86777b7f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in ext4_write_inode
2022/10/26 11:02 upstream 4dc12f37a8e9 2159e4d2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in ext4_write_inode
2022/10/25 23:44 upstream 4dc12f37a8e9 1984aebd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in ext4_write_inode
2022/10/25 08:54 upstream a970174d7a10 45645420 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in ext4_write_inode
2022/10/25 02:39 upstream 337a0a0b63f1 6134fb91 .config console log report info ci-qemu-upstream WARNING in ext4_write_inode
2022/09/29 14:18 upstream c3e0e1e23c70 d9da3ac6 .config console log report info ci-qemu-upstream WARNING in ext4_write_inode
2022/09/25 02:03 upstream 3db61221f4e8 0042f2b4 .config console log report info ci2-upstream-fs WARNING in ext4_write_inode
2022/09/24 19:10 upstream 3db61221f4e8 0042f2b4 .config console log report info ci2-upstream-fs WARNING in ext4_write_inode
2022/08/23 03:38 upstream 072e51356cd5 26a13b38 .config console log report info ci-qemu-upstream WARNING in ext4_write_inode
2022/08/18 23:49 upstream 573ae4f13f63 26a13b38 .config console log report info ci-qemu-upstream WARNING in ext4_write_inode
2022/07/27 00:12 upstream 4a57a8400075 ae971e66 .config console log report info ci-qemu-upstream WARNING in ext4_write_inode
2022/07/19 12:49 upstream 4a57a8400075 72a3cc0c .config console log report info ci-qemu-upstream WARNING in ext4_write_inode
2022/03/14 22:10 upstream 09688c0166e7 9e8eaa75 .config console log report info ci-upstream-kasan-gce-root WARNING in ext4_write_inode
2022/03/05 18:31 upstream ac84e82f78cb 7bdd8b2c .config console log report info ci-upstream-kasan-gce-root WARNING in ext4_write_inode
2022/03/01 03:37 upstream 719fce7539cd 45a13a73 .config console log report info ci-upstream-kasan-gce-root WARNING in ext4_write_inode
2022/02/25 02:09 upstream 73878e5eb1bd 7c337266 .config console log report info ci-upstream-kasan-gce-root WARNING in ext4_write_inode
2022/02/19 09:49 upstream 4f12b742eb2b 3cd800e4 .config console log report info ci-upstream-kasan-gce-root WARNING in ext4_write_inode
2022/02/11 21:04 upstream 1d41d2e82623 8b9ca619 .config console log report info ci-upstream-kasan-gce-root WARNING in ext4_write_inode
2023/08/20 15:11 upstream b320441c04c9 d216d8a0 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2023/06/27 07:39 upstream 88afbb21d4b3 4cd5bb25 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2023/06/01 02:48 upstream 929ed21dfdb6 babc4389 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2023/05/31 13:11 upstream 48b1320a674e 09898419 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2023/05/30 11:12 upstream 8b817fded42d 8d5c7541 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2023/05/29 08:50 upstream e338142b39cf cf184559 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2023/05/13 16:25 upstream 9a48d6046722 2b9ba477 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2023/05/13 13:46 upstream 9a48d6046722 2b9ba477 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2023/05/07 20:28 upstream 17784de648be 90c93c40 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2023/05/02 11:13 upstream 865fdb08197e 52d40fd2 .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2023/04/28 17:40 upstream 33afd4b76393 62df2017 .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2023/04/28 05:33 upstream 33afd4b76393 70a605de .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2023/04/16 11:45 upstream 3e7bb4f24617 ec410564 .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2023/04/13 11:17 upstream de4664485abb 82d5e53e .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2023/03/25 02:52 upstream e76db6e50c85 fbf0499a .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2022/09/19 11:19 upstream 521a547ced64 dd9a85ff .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2022/09/19 08:51 upstream 521a547ced64 dd9a85ff .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2022/09/02 05:38 upstream 42e66b1cc3a0 a805568e .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2022/08/31 19:00 upstream c5e4d5e99162 51e54e30 .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2022/06/29 11:53 upstream 941e3e791269 1434eec0 .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2022/06/21 03:30 upstream 78ca55889a54 0fc5c330 .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2022/06/13 12:36 upstream b13baccc3850 0d5abf15 .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2022/02/08 00:41 upstream 2ade8eef993c a7dab638 .config console log report info ci-qemu-upstream-386 WARNING in ext4_write_inode
2022/07/05 13:13 bpf ea1c3b77bc0b bff65f44 .config console log report info ci-upstream-bpf-kasan-gce WARNING in ext4_write_inode
2023/05/31 21:08 linux-next 715abedee4cd e2a77acd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ext4_write_inode
* Struck through repros no longer work on HEAD.