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: 842d, last: 21h04m
Discussions (4)
Title Replies (including bot) Last reply
[syzbot] Monthly ext4 report (Mar 2024) 0 (1) 2024/03/12 09:29
[syzbot] Monthly ext4 report (Feb 2024) 0 (1) 2024/02/09 20:57
[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 1557d 1559d 0/1 auto-closed as invalid on 2020/06/22 22:10
upstream WARNING in ext4_write_inode ext4 13 1548d 1555d 15/26 fixed on 2020/05/10 10:41
linux-5.15 WARNING in ext4_write_inode 1 429d 429d 0/3 auto-obsoleted due to no activity on 2023/07/26 10:16
linux-4.19 WARNING in ext4_write_inode 1 1558d 1558d 0/1 auto-closed as invalid on 2020/06/22 14:27
linux-6.1 WARNING in ext4_write_inode 5 352d 433d 0/3 auto-obsoleted due to no activity on 2023/09/21 16:26

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 3 PID: 109 at fs/ext4/inode.c:5156 ext4_write_inode+0x476/0x540 fs/ext4/inode.c:5156
Modules linked in:
CPU: 3 PID: 109 Comm: kswapd0 Not tainted 6.8.0-rc5-syzkaller-00002-gfca7526b7d89 #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+0x476/0x540 fs/ext4/inode.c:5156
Code: e0 4a ff 4c 8b 64 24 20 4d 85 e4 74 0d e8 02 e0 4a ff 4c 89 e7 e8 3a d6 c5 ff e8 f5 df 4a ff e9 ef fd ff ff e8 eb df 4a ff 90 <0f> 0b 90 e9 df fd ff ff e8 6d 08 a4 ff e9 16 fc ff ff e8 63 08 a4
RSP: 0018:ffffc90000fd7158 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff920001fae2b RCX: ffffffff82406aa0
RDX: ffff88801cee8000 RSI: ffffffff82406e65 RDI: 0000000000000005
RBP: 0000000000000800 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000800 R11: 0000000000000002 R12: ffff888147c466b0
R13: ffffc90000fd7320 R14: dffffc0000000000 R15: ffff888147c466d8
FS:  0000000000000000(0000) GS:ffff88806b500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f65d9211000 CR3: 000000012ef08000 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+0xa97/0xe90 fs/fs-writeback.c:1690
 writeback_single_inode+0x2b5/0x5a0 fs/fs-writeback.c:1746
 write_inode_now+0x16e/0x1e0 fs/fs-writeback.c:2788
 iput_final fs/inode.c:1726 [inline]
 iput.part.0+0x45f/0x7b0 fs/inode.c:1765
 iput+0x5c/0x80 fs/inode.c:1755
 dentry_unlink_inode+0x295/0x440 fs/dcache.c:400
 __dentry_kill+0x1d0/0x600 fs/dcache.c:603
 dput.part.0+0x4b1/0x9b0 fs/dcache.c:845
 dput+0x1f/0x30 fs/dcache.c:835
 ovl_destroy_inode+0x3e/0x190 fs/overlayfs/super.c:189
 destroy_inode+0xc4/0x1b0 fs/inode.c:310
 iput_final fs/inode.c:1739 [inline]
 iput.part.0+0x563/0x7b0 fs/inode.c:1765
 iput+0x5c/0x80 fs/inode.c:1755
 dentry_unlink_inode+0x295/0x440 fs/dcache.c:400
 __dentry_kill+0x1d0/0x600 fs/dcache.c:603
 shrink_kill fs/dcache.c:1048 [inline]
 shrink_dentry_list+0x140/0x5d0 fs/dcache.c:1075
 prune_dcache_sb+0xeb/0x150 fs/dcache.c:1156
 super_cache_scan+0x32a/0x550 fs/super.c:221
 do_shrink_slab+0x426/0x1120 mm/shrinker.c:435
 shrink_slab_memcg mm/shrinker.c:548 [inline]
 shrink_slab+0xa87/0x1310 mm/shrinker.c:626
 shrink_one+0x493/0x7b0 mm/vmscan.c:4767
 shrink_many mm/vmscan.c:4828 [inline]
 lru_gen_shrink_node mm/vmscan.c:4929 [inline]
 shrink_node+0x214d/0x3750 mm/vmscan.c:5888
 kswapd_shrink_node mm/vmscan.c:6693 [inline]
 balance_pgdat+0x9d2/0x1a90 mm/vmscan.c:6883
 kswapd+0x5be/0xc00 mm/vmscan.c:7143
 kthread+0x2c6/0x3b0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
 </TASK>

Crashes (101):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/02/20 22:26 upstream fca7526b7d89 3af7dd65 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in ext4_write_inode
2024/02/03 01:34 upstream 56897d51886f 60bf9982 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in ext4_write_inode
2024/01/31 00:08 upstream 861c0981648f 373b66cd .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in ext4_write_inode
2024/01/21 22:22 upstream 4fbbed787267 9bd8dcda .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in ext4_write_inode
2024/01/17 14:45 upstream 052d534373b7 c9a1c95b .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in ext4_write_inode
2024/05/29 20:33 upstream 4a4be1ad3a6e c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/05/29 20:33 upstream 4a4be1ad3a6e c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/05/29 19:23 upstream 4a4be1ad3a6e c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/05/28 22:03 upstream e0cce98fe279 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/05/27 19:41 upstream 2bfcfd584ff5 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/05/27 17:14 upstream 2bfcfd584ff5 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/05/27 03:49 upstream 1613e604df0c c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/05/27 01:49 upstream 1613e604df0c c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/05/26 18:29 upstream c13320499ba0 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/05/26 11:31 upstream c13320499ba0 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/05/25 05:13 upstream 02c438bbfffe c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/05/23 02:09 upstream 5f16eb0549ab c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/05/20 09:03 upstream eb6a9339efeb c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/03/14 03:13 upstream e5e038b7ae9d f919f202 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/02/28 13:32 upstream cf1182944c7c 55d6f11d .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/02/27 17:50 upstream 45ec2f5f6ed3 d367cbe5 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/02/27 03:39 upstream 45ec2f5f6ed3 05e69c83 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/02/26 13:18 upstream d206a76d7d27 23536c23 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/02/25 11:58 upstream ab0a97cffa0b 8d446f15 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/02/24 08:57 upstream 603c04e27c3e 8d446f15 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/02/24 03:33 upstream b6d69282db55 8d446f15 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/02/23 04:31 upstream ffd2cb6b718e 8d446f15 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/02/12 20:10 upstream 716f4aaa7b48 77b23aa1 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/02/06 18:32 upstream 99bd3cb0d12e 6404acf9 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/02/05 19:20 upstream 54be6c6c5ae8 e23e8c20 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/01/23 01:44 upstream 610347effc2e 1c0ecc51 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/01/13 04:29 upstream 23a80d462c67 551587c1 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/01/12 04:36 upstream 22d29f1112c8 00f3cc59 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/01/12 00:40 upstream de927f6c0b07 00f3cc59 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2024/01/10 04:27 upstream 35f11a3710cd b438bd66 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
2023/12/11 16:01 upstream a39b6ac3781d 28b24332 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in ext4_write_inode
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
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
2022/02/11 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
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.