BUG: unable to handle kernel paging request in errseq_set

Status: upstream: reported C repro on 2023/04/09 06:13
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+3857bdaaa566e5fa2144@syzkaller.appspotmail.com
First crash: 1284d, last: 21d
▶ ▼ Bug presence (1)
Date Name Commit Repro Result
2025/05/20 upstream (ToT) b36ddb9210e6 C [report] BUG: MAX_LOCKDEP_CHAINS too low!
▶ ▼ Similar bugs (3)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 general protection fault in errseq_set xfs 2 syz, C 2 1319d 1389d 0/1 upstream: reported C repro on 2022/12/24 15:39
upstream general protection fault in errseq_set btrfs 2 2 809d 872d 0/29 auto-obsoleted due to no activity on 2024/10/24 17:15
linux-4.19 general protection fault in errseq_set xfs 2 syz, C error 6 1363d 1398d 0/1 upstream: reported C repro on 2022/12/16 00:36
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2026/10/12 18:03 30m retest repro linux-5.15.y no crash job log log
2026/10/12 18:03 23m retest repro linux-5.15.y no crash job log log
2026/10/12 18:03 23m retest repro linux-5.15.y no crash job log log
2026/10/12 18:03 24m retest repro linux-5.15.y no crash job log log
2026/10/12 18:03 23m retest repro linux-5.15.y no crash job log log
2026/08/16 05:20 12m retest repro linux-5.15.y report job log log
2026/08/16 05:20 14m retest repro linux-5.15.y report job log log
2026/08/16 05:20 12m retest repro linux-5.15.y report job log log
2026/08/16 05:20 12m retest repro linux-5.15.y report job log log
2026/08/16 05:20 15m retest repro linux-5.15.y report job log log
▶ ▼ Fix bisection attempts (9)
Created Duration User Patch Repo Result
2025/01/12 01:22 1m fix candidate upstream error job log
2024/10/25 05:05 1m fix candidate upstream error job log
2024/09/01 20:12 0m fix candidate upstream error job log
2024/07/16 14:17 1m fix candidate upstream error job log
2024/05/02 22:50 0m fix candidate upstream error job log
2024/03/11 00:49 0m fix candidate upstream error job log
2024/01/04 08:32 5m fix candidate upstream error job log
2023/11/26 16:10 8m fix candidate upstream error job log
2023/09/14 19:16 1m fix candidate upstream error job log

Sample crash report:
XFS (loop0): Corruption of in-memory data (0x8) detected at xfs_defer_finish_noroll+0x156f/0x1b80 fs/xfs/libxfs/xfs_defer.c:504 (fs/xfs/libxfs/xfs_defer.c:504).  Shutting down filesystem.
XFS (loop0): Please unmount the filesystem and rectify the problem(s)
general protection fault, probably for non-canonical address 0xdffffc0000000039: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000001c8-0x00000000000001cf]
CPU: 0 PID: 4573 Comm: syz.0.20 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:errseq_set+0x23/0x110 lib/errseq.c:72
Code: 95 fd eb f4 00 00 cc 55 41 57 41 56 41 54 53 89 f3 49 89 fe e8 8e 3b 95 fd 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 b7 00 00 00 41 8b 2e bf 01 f0 ff ff 89 de
RSP: 0018:ffffc900030bf0f0 EFLAGS: 00010206
RAX: 0000000000000039 RBX: 00000000ffffff8b RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 00000000ffffff8b RDI: 00000000000001c8
RBP: 00000000ffffff8b R08: ffffffff901d4207 R09: 1ffffffff203a840
R10: dffffc0000000000 R11: fffffbfff203a841 R12: dffffc0000000000
R13: ffffea000168c400 R14: 00000000000001c8 R15: 1ffffd40002d1883
FS:  00007f5b11c306c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5b1261be80 CR3: 0000000022b24000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __filemap_set_wb_err+0x1c/0x1b0 mm/filemap.c:730
 mapping_set_error include/linux/pagemap.h:60 [inline]
 iomap_writepage_map fs/iomap/buffered-io.c:1383 [inline]
 iomap_do_writepage+0x1e13/0x2160 fs/iomap/buffered-io.c:1485
 write_cache_pages+0x9b7/0x1000 mm/page-writeback.c:2277
 iomap_writepages+0x5a/0x210 fs/iomap/buffered-io.c:1516
 xfs_vm_writepages+0x14a/0x1c0 fs/xfs/xfs_aops.c:488
 do_writepages+0x476/0x6e0 mm/page-writeback.c:2386
 filemap_fdatawrite_wbc+0x1eb/0x240 mm/filemap.c:400
 __filemap_fdatawrite_range mm/filemap.c:433 [inline]
 file_write_and_wait_range+0x14d/0x220 mm/filemap.c:810
 xfs_file_fsync+0x19e/0x950 fs/xfs/xfs_file.c:182
 generic_write_sync include/linux/fs.h:2990 [inline]
 xfs_file_buffered_write+0x8c5/0x9d0 fs/xfs/xfs_file.c:793
 do_iter_readv_writev+0x47e/0x5f0 fs/read_write.c:-1
 do_iter_write+0x205/0x7b0 fs/read_write.c:855
 vfs_writev fs/read_write.c:928 [inline]
 do_pwritev+0x240/0x3a0 fs/read_write.c:1025
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f5b125ce799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5b11c30028 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f5b12847fa0 RCX: 00007f5b125ce799
RDX: 0000000000000001 RSI: 0000200000000100 RDI: 0000000000000004
RBP: 00007f5b12664c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5b12848038 R14: 00007f5b12847fa0 R15: 00007fffb44cb6b8
 </TASK>
Modules linked in:
---[ end trace 9692e3230866453b ]---
RIP: 0010:errseq_set+0x23/0x110 lib/errseq.c:72
Code: 95 fd eb f4 00 00 cc 55 41 57 41 56 41 54 53 89 f3 49 89 fe e8 8e 3b 95 fd 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 b7 00 00 00 41 8b 2e bf 01 f0 ff ff 89 de
RSP: 0018:ffffc900030bf0f0 EFLAGS: 00010206
RAX: 0000000000000039 RBX: 00000000ffffff8b RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 00000000ffffff8b RDI: 00000000000001c8
RBP: 00000000ffffff8b R08: ffffffff901d4207 R09: 1ffffffff203a840
R10: dffffc0000000000 R11: fffffbfff203a841 R12: dffffc0000000000
R13: ffffea000168c400 R14: 00000000000001c8 R15: 1ffffd40002d1883
FS:  00007f5b11c306c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5b1261be80 CR3: 0000000022b24000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	95                   	xchg   %eax,%ebp
   1:	fd                   	std
   2:	eb f4                	jmp    0xfffffff8
   4:	00 00                	add    %al,(%rax)
   6:	cc                   	int3
   7:	55                   	push   %rbp
   8:	41 57                	push   %r15
   a:	41 56                	push   %r14
   c:	41 54                	push   %r12
   e:	53                   	push   %rbx
   f:	89 f3                	mov    %esi,%ebx
  11:	49 89 fe             	mov    %rdi,%r14
  14:	e8 8e 3b 95 fd       	call   0xfd953ba7
  19:	4c 89 f0             	mov    %r14,%rax
  1c:	48 c1 e8 03          	shr    $0x3,%rax
  20:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  27:	fc ff df
* 2a:	0f b6 04 08          	movzbl (%rax,%rcx,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	0f 85 b7 00 00 00    	jne    0xed
  36:	41 8b 2e             	mov    (%r14),%ebp
  39:	bf 01 f0 ff ff       	mov    $0xfffff001,%edi
  3e:	89 de                	mov    %ebx,%esi

Crashes (344):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/03/26 09:14 linux-5.15.y 91d48252ad4b c6143aac .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-5-15-kasan general protection fault in errseq_set
2025/05/12 05:04 linux-5.15.y 3b8db0e4f263 77908e5f .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-5-15-kasan general protection fault in errseq_set
2025/05/12 04:29 linux-5.15.y 3b8db0e4f263 77908e5f .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-5-15-kasan general protection fault in errseq_set
2025/02/28 04:15 linux-5.15.y c16c81c81336 6a8fcbc4 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-5-15-kasan general protection fault in errseq_set
2024/07/22 03:15 linux-5.15.y 7c6d66f0266f b88348e9 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan general protection fault in errseq_set
2024/01/06 12:50 linux-5.15.y 26c690eff0a5 d0304e9c .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan general protection fault in errseq_set
2023/09/26 09:35 linux-5.15.y b911329317b4 0b6a67ac .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan general protection fault in errseq_set
2025/08/22 13:33 linux-5.15.y c79648372d02 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2025/08/17 11:30 linux-5.15.y c79648372d02 1804e95e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2025/07/29 19:04 linux-5.15.y c79648372d02 c4a95487 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2025/07/19 08:16 linux-5.15.y c79648372d02 7117feec .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2025/05/21 06:15 linux-5.15.y a68c15152131 b47f9e02 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2025/03/28 10:50 linux-5.15.y 0c935c049b5c 6c09fb82 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2025/03/24 05:56 linux-5.15.y 0c935c049b5c 875573af .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2025/03/05 08:07 linux-5.15.y c16c81c81336 c3901742 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2025/02/09 08:50 linux-5.15.y c16c81c81336 ef44b750 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2025/01/30 13:55 linux-5.15.y 003148680b79 afe4eff5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2025/01/30 09:40 linux-5.15.y 003148680b79 afe4eff5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2025/01/30 00:20 linux-5.15.y 003148680b79 136953f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2025/01/28 23:29 linux-5.15.y 003148680b79 f5427d7c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2025/01/28 11:37 linux-5.15.y 003148680b79 18070896 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2025/01/23 20:22 linux-5.15.y 003148680b79 521b0ce3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2025/01/23 05:10 linux-5.15.y 4735586da88e a44b0418 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2025/01/12 10:08 linux-5.15.y 4735586da88e 6dbc6a9b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2025/01/05 07:05 linux-5.15.y 91786f140358 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2025/01/04 14:17 linux-5.15.y 91786f140358 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2024/12/26 20:38 linux-5.15.y 91786f140358 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2024/12/06 05:35 linux-5.15.y 0a51d2d4527b 29f61fce .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2024/11/20 02:11 linux-5.15.y 0a51d2d4527b 7d02db5a .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2024/08/01 20:52 linux-5.15.y 7e89efd3ae1c 1e9c4cf3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2024/04/12 22:30 linux-5.15.y cdfd0a7f0139 c8349e48 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2024/04/12 22:10 linux-5.15.y cdfd0a7f0139 c8349e48 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2023/09/26 09:32 linux-5.15.y b911329317b4 0b6a67ac .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2023/05/30 06:34 linux-5.15.y 1fe619a7d252 cf184559 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2023/04/09 06:13 linux-5.15.y d86dfc4d95cd 71147e29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 BUG: unable to handle kernel paging request in errseq_set
2026/09/22 23:35 linux-5.15.y 0248c33e835e 5207b90e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2026/08/28 04:45 linux-5.15.y 4a1eaf96ee5c 69a01293 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2026/08/18 07:29 linux-5.15.y aabd761612db 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2026/06/24 08:09 linux-5.15.y eceeec79dbc6 042555ff .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2026/06/21 21:49 linux-5.15.y eceeec79dbc6 43bfcdb0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2026/06/16 21:01 linux-5.15.y dc027a595035 a3998659 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2026/06/16 04:19 linux-5.15.y dc027a595035 50bb0618 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2026/05/25 20:38 linux-5.15.y 241d66fa280c c69befb3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2026/05/03 01:01 linux-5.15.y ef251c45f1cd a0d91488 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2025/10/05 03:30 linux-5.15.y 29e53a5b1c4f 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2025/10/01 10:12 linux-5.15.y 43bb85222e53 65a0eece .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2025/03/08 18:31 linux-5.15.y c16c81c81336 7e3bd60d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2025/02/28 03:36 linux-5.15.y c16c81c81336 6a8fcbc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2025/02/24 13:14 linux-5.15.y c16c81c81336 d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2025/02/10 20:08 linux-5.15.y c16c81c81336 43f51a00 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2025/01/31 22:59 linux-5.15.y 003148680b79 aa47157c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2025/01/30 14:59 linux-5.15.y 003148680b79 afe4eff5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2025/01/30 11:50 linux-5.15.y 003148680b79 afe4eff5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2025/01/29 06:58 linux-5.15.y 003148680b79 865ef71e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2025/01/27 16:45 linux-5.15.y 003148680b79 d99a33ad .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2025/01/12 11:24 linux-5.15.y 4735586da88e 6dbc6a9b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2025/01/09 01:38 linux-5.15.y 91786f140358 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2025/01/08 23:12 linux-5.15.y 91786f140358 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2024/12/28 23:56 linux-5.15.y 91786f140358 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2024/12/26 18:02 linux-5.15.y 91786f140358 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2024/12/08 11:19 linux-5.15.y 0a51d2d4527b 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan general protection fault in errseq_set
2023/06/23 17:21 linux-5.15.y f67653019430 79782afc .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan general protection fault in errseq_set
* Struck through repros no longer work on HEAD.