syzbot

 sign-in | mailing list | source | docs
🐞 Open [969] ≡ Subsystems 🐞 Fixed [4558] 🐞 Invalid [10510] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes 💬 Send us feedback

kernel BUG in folio_end_writeback

Status: upstream: reported C repro on 2022/12/27 03:42
Labels: nilfs (incorrect?)
Reported-by: syzbot+7e5cf1d80677ec185e63@syzkaller.appspotmail.com
First crash: 161d, last: 18h54m

Cause bisection: failed (error log, bisect log)
▶ ▼ Discussions (4)
Title Replies (including bot) Last reply
[syzbot] Monthly nilfs report (May 2023) 0 (1) 2023/05/29 08:50
[syzbot] Monthly nilfs report (Apr 2023) 0 (1) 2023/04/27 10:39
[syzbot] Monthly mm report 3 (4) 2023/04/06 10:02
[syzbot] [nilfs2?] kernel BUG in folio_end_writeback 0 (1) 2022/12/27 03:42
▶ ▼ Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 kernel BUG in folio_end_writeback origin:upstream C 1 26d 26d 0/3 upstream: reported C repro on 2023/05/07 14:22

Sample crash report:
------------[ cut here ]------------
kernel BUG at mm/filemap.c:1619!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 6.4.0-rc4-syzkaller-00078-g929ed21dfdb6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:folio_end_writeback+0x391/0x3b0 mm/filemap.c:1619
Code: ef e8 a3 d1 26 00 e9 82 fe ff ff 4c 89 e7 e8 b6 d1 26 00 e9 c8 fc ff ff 48 89 ef e8 a9 d1 26 00 e9 d5 fd ff ff e8 8f 08 d4 ff <0f> 0b e8 98 d1 26 00 e9 11 fe ff ff 48 89 df e8 8b d1 26 00 e9 80
RSP: 0018:ffffc90000147c68 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000001cc8700 RCX: 0000000000000100
RDX: ffff88801665bb80 RSI: ffffffff81b03b91 RDI: 0000000000000001
RBP: ffffea0001cc87c0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffea0001cc87f4
R13: ffff8880701b4978 R14: 0000000000000000 R15: ffffea0001cc87c0
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020075000 CR3: 000000007a976000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 end_buffer_async_write+0x284/0x340 fs/buffer.c:417
 end_bio_bh_io_sync+0xde/0x130 fs/buffer.c:2730
 bio_endio+0x5af/0x6c0 block/bio.c:1608
 req_bio_endio block/blk-mq.c:761 [inline]
 blk_update_request+0x5c5/0x1620 block/blk-mq.c:906
 blk_mq_end_request+0x59/0x4c0 block/blk-mq.c:1023
 lo_complete_rq+0x1c6/0x280 drivers/block/loop.c:370
 blk_complete_reqs+0xad/0xe0 block/blk-mq.c:1101
 __do_softirq+0x1d4/0x905 kernel/softirq.c:571
 run_ksoftirqd kernel/softirq.c:939 [inline]
 run_ksoftirqd+0x31/0x60 kernel/softirq.c:931
 smpboot_thread_fn+0x659/0x9e0 kernel/smpboot.c:164
 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:folio_end_writeback+0x391/0x3b0 mm/filemap.c:1619
Code: ef e8 a3 d1 26 00 e9 82 fe ff ff 4c 89 e7 e8 b6 d1 26 00 e9 c8 fc ff ff 48 89 ef e8 a9 d1 26 00 e9 d5 fd ff ff e8 8f 08 d4 ff <0f> 0b e8 98 d1 26 00 e9 11 fe ff ff 48 89 df e8 8b d1 26 00 e9 80
RSP: 0018:ffffc90000147c68 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000001cc8700 RCX: 0000000000000100
RDX: ffff88801665bb80 RSI: ffffffff81b03b91 RDI: 0000000000000001
RBP: ffffea0001cc87c0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffea0001cc87f4
R13: ffff8880701b4978 R14: 0000000000000000 R15: ffffea0001cc87c0
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020075000 CR3: 000000007a976000 CR4: 0000000000350ef0

Crashes (33):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Manager Title
2023/06/01 21:30 upstream 929ed21dfdb6 a4ae4f42 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root kernel BUG in folio_end_writeback
2023/05/28 08:19 upstream 4e893b5aa4ac cf184559 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root kernel BUG in folio_end_writeback
2023/03/17 23:06 upstream 38e04b3e4240 7939252e .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in folio_end_writeback
2023/02/03 01:20 upstream 9f266ccaa2f5 16d19e30 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root kernel BUG in folio_end_writeback
2022/12/23 04:02 upstream 0a924817d2ed 9da18ae8 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in folio_end_writeback
2023/05/30 10:22 upstream 8b817fded42d cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in folio_end_writeback
2023/05/24 16:41 upstream 9d646009f65d 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in folio_end_writeback
2023/05/11 05:41 upstream d295b66a7b66 0fbd49f4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in folio_end_writeback
2023/04/18 19:51 upstream af67688dca57 d931e9f0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in folio_end_writeback
2023/04/16 03:27 upstream a7a55e27ad72 ec410564 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in folio_end_writeback
2023/04/14 05:25 upstream 44149752e998 3cfcaa1b .config console log report info ci-qemu-upstream kernel BUG in folio_end_writeback
2023/04/10 14:18 upstream 09a9639e56c0 71147e29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in folio_end_writeback
2023/04/10 06:33 upstream 09a9639e56c0 71147e29 .config console log report info ci-qemu-upstream kernel BUG in folio_end_writeback
2023/04/09 17:25 upstream cdc9718d5e59 71147e29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in folio_end_writeback
2023/04/08 02:19 upstream aa318c48808c 71147e29 .config console log report info ci-qemu-upstream kernel BUG in folio_end_writeback
2023/04/07 15:09 upstream f2afccfefe7b f7ba566d .config console log report info ci-qemu-upstream kernel BUG in folio_end_writeback
2023/04/06 13:45 upstream 99ddf2254feb 08707520 .config console log report info ci-qemu-upstream kernel BUG in folio_end_writeback
2023/03/30 20:27 upstream 8bb95a1662f8 f325deb0 .config console log report info ci-qemu-upstream kernel BUG in folio_end_writeback
2023/03/30 08:44 upstream ffe78bbd5121 f325deb0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in folio_end_writeback
2023/03/24 13:25 upstream 1e760fa3596e f94b4a29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in folio_end_writeback
2023/03/20 05:41 upstream e8d018dd0257 7939252e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in folio_end_writeback
2023/03/19 09:34 upstream 534293368afa 7939252e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in folio_end_writeback
2023/03/17 01:43 upstream 0ddc84d2dd43 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in folio_end_writeback
2023/03/15 13:28 upstream 6015b1aca1a2 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in folio_end_writeback
2023/03/15 09:45 upstream 6015b1aca1a2 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in folio_end_writeback
2023/03/12 19:47 upstream 134231664868 5205ef30 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in folio_end_writeback
2023/02/27 15:15 upstream f3a2439f20d9 9189cb53 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in folio_end_writeback
2023/02/25 17:09 upstream 489fa31ea873 ee50e71c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in folio_end_writeback
2023/02/24 19:58 upstream d2980d8d8265 ee50e71c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in folio_end_writeback
2023/02/13 11:59 upstream ceaa837f96ad 957959cb .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in folio_end_writeback
2023/01/06 03:25 upstream 41c03ba9beea 1dac8c7a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in folio_end_writeback
2022/12/23 03:32 upstream 0a924817d2ed 9da18ae8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in folio_end_writeback
2023/04/10 04:08 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 9a03cbd79d3a 71147e29 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in folio_end_writeback
* Struck through repros no longer work on HEAD.