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kernel BUG in ext4_do_writepages

Status: upstream: reported C repro on 2022/12/17 20:23
Labels: ext4 (incorrect?)
Reported-by: syzbot+d1da16f03614058fdc48@syzkaller.appspotmail.com
First crash: 169d, last: 1h43m

Cause bisection: failed (error log, bisect log)
▶ ▼ Discussions (3)
Title Replies (including bot) Last reply
[syzbot] Monthly ext4 report (May 2023) 1 (2) 2023/06/01 02:08
[syzbot] Monthly ext4 report (Apr 2023) 0 (1) 2023/04/28 15:06
[syzbot] kernel BUG in ext4_do_writepages 0 (1) 2022/12/17 20:23

Sample crash report:
------------[ cut here ]------------
kernel BUG at fs/ext4/inode.c:2587!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 41 Comm: kworker/u4:2 Not tainted 6.4.0-rc4-syzkaller-00051-g48b1320a674e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
Workqueue: writeback wb_workfn (flush-7:0)
RIP: 0010:ext4_do_writepages+0x25db/0x3290 fs/ext4/inode.c:2587
Code: 00 fc ff df 44 89 64 24 24 48 c1 ea 03 80 3c 02 00 0f 84 4b e8 ff ff 48 8b 3c 24 e8 ef 84 a9 ff e9 3d e8 ff ff e8 d5 bb 56 ff <0f> 0b e8 ce bb 56 ff 48 8b 84 24 b0 00 00 00 48 8d 78 40 48 89 f8
RSP: 0018:ffffc90000b274a8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff8880152c0000 RSI: ffffffff822d884b RDI: 0000000000000007
RBP: ffff888078374650 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
R13: ffffc90000b276a8 R14: ffff8880783748b0 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000180 CR3: 000000001e3ca000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 ext4_writepages+0x304/0x770 fs/ext4/inode.c:2792
 do_writepages+0x1a8/0x640 mm/page-writeback.c:2551
 __writeback_single_inode+0x121/0xdb0 fs/fs-writeback.c:1603
 writeback_sb_inodes+0x54d/0xe70 fs/fs-writeback.c:1894
 wb_writeback+0x294/0xa50 fs/fs-writeback.c:2068
 wb_do_writeback fs/fs-writeback.c:2211 [inline]
 wb_workfn+0x2a5/0xfc0 fs/fs-writeback.c:2251
 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405
 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552
 kthread+0x344/0x440 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_do_writepages+0x25db/0x3290 fs/ext4/inode.c:2587
Code: 00 fc ff df 44 89 64 24 24 48 c1 ea 03 80 3c 02 00 0f 84 4b e8 ff ff 48 8b 3c 24 e8 ef 84 a9 ff e9 3d e8 ff ff e8 d5 bb 56 ff <0f> 0b e8 ce bb 56 ff 48 8b 84 24 b0 00 00 00 48 8d 78 40 48 89 f8
RSP: 0018:ffffc90000b274a8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff8880152c0000 RSI: ffffffff822d884b RDI: 0000000000000007
RBP: ffff888078374650 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
R13: ffffc90000b276a8 R14: ffff8880783748b0 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000180 CR3: 000000001e3ca000 CR4: 0000000000350ee0

Crashes (128):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Manager Title
2023/06/01 00:49 upstream 48b1320a674e e2a77acd .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root kernel BUG in ext4_do_writepages
2023/05/26 15:16 upstream 0d85b27b0cc6 b40ef614 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-smack-root kernel BUG in ext4_do_writepages
2023/03/13 14:57 upstream eeac8ede1755 026e2200 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/02/28 19:55 upstream ae3419fbac84 95aee97a .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro #1] [mounted in repro #2] ci2-upstream-fs kernel BUG in ext4_do_writepages
2022/12/29 06:15 upstream 1b929c02afd3 44712fbc .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root kernel BUG in ext4_do_writepages
2022/12/18 21:17 upstream f9ff5644bcc0 05494336 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root kernel BUG in ext4_do_writepages
2022/12/14 00:42 upstream 02bf43c7b7f7 f6511626 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in ext4_do_writepages
2022/12/14 00:10 upstream 764822972d64 e660de91 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-selinux-root kernel BUG in ext4_do_writepages
2023/02/13 02:09 linux-next 38d2b86a665b 93e26d60 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root kernel BUG in ext4_do_writepages
2023/01/11 15:12 linux-next c9e9cdd8bdcc 1dac8c7a .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root kernel BUG in ext4_do_writepages
2023/03/13 06:18 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe15c26ee26e 5205ef30 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 kernel BUG in ext4_do_writepages
2023/05/24 08:01 upstream 27e462c8fad4 4bce1a3e .config strace log report syz [disk image] [vmlinux] [kernel image] [mounted in repro #1] [mounted in repro #2] ci-upstream-kasan-gce-root kernel BUG in ext4_do_writepages
2023/06/01 00:22 upstream 48b1320a674e e2a77acd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root kernel BUG in ext4_do_writepages
2023/05/31 00:16 upstream afead42fdfca df37c7f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/05/30 15:14 upstream 8b817fded42d 8d5c7541 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel BUG in ext4_do_writepages
2023/05/28 09:51 upstream 4e893b5aa4ac cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/05/27 05:37 upstream 0d85b27b0cc6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/05/27 00:42 upstream 0d85b27b0cc6 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/05/24 11:34 upstream 27e462c8fad4 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/05/17 22:34 upstream 1b66c114d161 eaac4681 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel BUG in ext4_do_writepages
2023/05/17 11:13 upstream f1fcbaa18b28 eaac4681 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/05/17 03:49 upstream f1fcbaa18b28 11c89444 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel BUG in ext4_do_writepages
2023/05/13 14:28 upstream 9a48d6046722 2b9ba477 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in ext4_do_writepages
2023/05/12 04:49 upstream 105131df9c3b adb9a3cd .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/05/11 21:36 upstream 105131df9c3b adb9a3cd .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in ext4_do_writepages
2023/05/08 16:46 upstream ac9a78681b92 90c93c40 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root kernel BUG in ext4_do_writepages
2023/05/07 20:34 upstream 17784de648be 90c93c40 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/05/07 16:08 upstream fc4354c6e5c2 90c93c40 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/05/07 14:55 upstream fc4354c6e5c2 90c93c40 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/05/07 13:50 upstream fc4354c6e5c2 90c93c40 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/05/07 03:44 upstream fc4354c6e5c2 90c93c40 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/05/06 12:36 upstream 2e1e1337881b 90c93c40 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/05/05 17:04 upstream 78b421b6a7c6 de870ca5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/05/05 03:14 upstream 1a5304fecee5 518a39a6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/05/04 20:57 upstream 1a5304fecee5 518a39a6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/05/03 06:14 upstream 7df047b3f0aa 48e0a81d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/05/03 00:26 upstream 7df047b3f0aa 48e0a81d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/05/01 09:47 upstream 58390c8ce1bd 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/05/01 06:50 upstream 58390c8ce1bd 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/04/28 23:50 upstream 33afd4b76393 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/04/28 15:18 upstream 91ec4b0d11fe 70a605de .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/04/28 12:58 upstream 91ec4b0d11fe 70a605de .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/04/28 03:04 upstream 91ec4b0d11fe 6f3d6fa7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/04/27 21:19 upstream 6e98b09da931 6f3d6fa7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/04/27 06:11 upstream 5c7ecada25d2 19a3dabe .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/04/26 22:25 upstream 5c7ecada25d2 19a3dabe .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/04/26 16:04 upstream 0cfd8703e7da 8d843721 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/04/23 17:39 upstream 622322f53c6d 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/04/23 14:28 upstream 622322f53c6d 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/04/23 00:19 upstream 2caeeb9d4a1b 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/04/22 22:15 upstream 2caeeb9d4a1b 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/04/21 16:06 upstream 2af3e53a4dc0 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/04/17 15:40 upstream 6a8f57ae2eb0 c6ec7083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/04/17 11:56 upstream 6a8f57ae2eb0 c6ec7083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/04/16 15:40 upstream 3e7bb4f24617 ec410564 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/04/16 13:17 upstream 3e7bb4f24617 ec410564 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/04/16 09:11 upstream a7a55e27ad72 ec410564 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/04/15 13:29 upstream 7a934f4bd7d6 ec410564 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/04/15 08:54 upstream 7a934f4bd7d6 ec410564 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/04/14 07:08 upstream 44149752e998 3cfcaa1b .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ext4_do_writepages
2023/01/16 02:01 upstream f0f70ddb8f3b a63719e7 .config console log report info ci-qemu-upstream kernel BUG in ext4_do_writepages
2022/12/13 20:13 upstream 764822972d64 e660de91 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root kernel BUG in ext4_do_writepages
2023/05/14 11:48 linux-next e922ba281a8d 2b9ba477 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in ext4_do_writepages
2023/04/14 04:16 linux-next e3342532ecd3 3cfcaa1b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in ext4_do_writepages
* Struck through repros no longer work on HEAD.