general protection fault in update_sit_entry

Status: upstream: reported C repro on 2024/11/29 11:40
Reported-by: syzbot+163873d140f6bf1d2e0e@syzkaller.appspotmail.com
First crash: 707d, last: 13h08m
▶ ▼ Similar bugs (6)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 general protection fault in update_sit_entry origin:lts-only 8 syz, C error 18 69d 753d 0/3 upstream: reported C repro on 2024/10/11 17:04
linux-4.14 general protection fault in update_sit_entry f2fs 2 syz, C 9 1340d 1453d 0/1 upstream: reported C repro on 2022/11/12 02:17
upstream general protection fault in update_sit_entry prio:high f2fs 2 1 76d 72d 0/29 moderation: reported on 2026/08/24 03:57
linux-6.1 general protection fault in update_sit_entry origin:lts-only 8 syz, C done 18 28d 666d 0/3 upstream: reported C repro on 2025/01/07 01:40
android-6-1 general protection fault in update_sit_entry origin:downstream 2 syz, C error 50 13d 695d 0/2 upstream: reported C repro on 2024/12/08 18:16
android-5-15 general protection fault in update_sit_entry origin:downstream 2 syz, C 73 17d 710d 0/2 upstream: reported C repro on 2024/11/24 02:28
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2026/10/21 12:47 8m retest repro android13-5.10-lts report job log log
2026/10/21 12:47 6m retest repro android13-5.10-lts error job log
2026/10/21 12:47 10m retest repro android13-5.10-lts report job log log
2026/10/21 12:47 11m retest repro android13-5.10-lts report job log log
2026/10/21 12:47 19m retest repro android13-5.10-lts report job log log
2026/06/20 09:46 11m retest repro android13-5.10-lts log
2026/06/20 09:46 12m retest repro android13-5.10-lts log
2026/06/20 09:46 17m retest repro android13-5.10-lts log
2026/06/20 09:46 22m retest repro android13-5.10-lts log
2026/06/20 09:46 12m retest repro android13-5.10-lts log
▶ ▼ Fix bisection attempts (1)
Created Duration User Patch Repo Result
2025/02/11 14:47 2h46m bisect fix android13-5.10-lts OK (0) job log log

Sample crash report:
F2FS-fs (loop2): invalid crc value
F2FS-fs (loop2): Found nat_bits in checkpoint
F2FS-fs (loop2): Start checkpoint disabled!
F2FS-fs (loop2): Mounted with checkpoint version = 48b305e6
general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]
CPU: 1 PID: 393 Comm: syz.2.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:f2fs_test_and_set_bit fs/f2fs/f2fs.h:2914 [inline]
RIP: 0010:update_sit_entry+0x5a4/0xfd0 fs/f2fs/segment.c:2339
Code: 80 3c 08 00 74 08 48 89 df e8 c8 19 92 ff 4c 89 75 b0 48 8b 1b 48 03 5d a8 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 0b 09 00 00 44 0f b6 33 44 89 f0 44 08 e8
RSP: 0018:ffffc900026c6638 EFLAGS: 00010206
RAX: 0000000000000003 RBX: 000000000000001b RCX: dffffc0000000000
RDX: ffff88810fa35000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900026c66b0 R08: ffff88810f76861f R09: 1ffff11021eed0c3
R10: dffffc0000000000 R11: ffffed1021eed0c4 R12: ffff88810fb4e000
R13: 0000000000000001 R14: ffff88810fb4e0c0 R15: ffff88810f8e21b8
FS:  00007fb9974336c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000010ac0 CR3: 000000010f6e5000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 f2fs_allocate_data_block+0x10c9/0x3880 fs/f2fs/segment.c:3481
 do_write_page+0x2be/0x7e0 fs/f2fs/segment.c:3569
 f2fs_outplace_write_data+0xf6/0x240 fs/f2fs/segment.c:3635
 f2fs_do_write_data_page+0xc88/0x11c0 fs/f2fs/data.c:2716
 f2fs_write_single_data_page+0xdd1/0x1680 fs/f2fs/data.c:2839
 f2fs_write_cache_pages fs/f2fs/data.c:3090 [inline]
 __f2fs_write_data_pages fs/f2fs/data.c:3240 [inline]
 f2fs_write_data_pages+0x15b0/0x28f0 fs/f2fs/data.c:3267
 do_writepages+0x12e/0x280 mm/page-writeback.c:2380
 __filemap_fdatawrite_range+0x2a0/0x350 mm/filemap.c:427
 file_write_and_wait_range+0x8c/0x110 mm/filemap.c:766
 f2fs_do_sync_file+0x3fd/0x1c60 fs/f2fs/file.c:284
 f2fs_sync_file+0x103/0x150 fs/f2fs/file.c:401
 vfs_fsync_range+0x171/0x180 fs/sync.c:202
 generic_write_sync include/linux/fs.h:2926 [inline]
 f2fs_file_write_iter+0x6db/0x27c0 fs/f2fs/file.c:4941
 do_iter_readv_writev+0x477/0x5f0 fs/read_write.c:-1
 do_iter_write+0x175/0x5e0 fs/read_write.c:866
 vfs_writev+0x2a9/0x530 fs/read_write.c:939
 do_pwritev fs/read_write.c:1036 [inline]
 __do_sys_pwritev2 fs/read_write.c:1095 [inline]
 __se_sys_pwritev2+0x17d/0x290 fs/read_write.c:1086
 __x64_sys_pwritev2+0xbf/0xd0 fs/read_write.c:1086
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fb9975d3b19
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:00007fb997433028 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007fb997859fa0 RCX: 00007fb9975d3b19
RDX: 0000000000000001 RSI: 0000200000010b00 RDI: 0000000000000004
RBP: 00007fb99766bb70 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000005412 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb99785a038 R14: 00007fb997859fa0 R15: 00007ffd81972f28
Modules linked in:
---[ end trace 724be32677e514d8 ]---
RIP: 0010:f2fs_test_and_set_bit fs/f2fs/f2fs.h:2914 [inline]
RIP: 0010:update_sit_entry+0x5a4/0xfd0 fs/f2fs/segment.c:2339
Code: 80 3c 08 00 74 08 48 89 df e8 c8 19 92 ff 4c 89 75 b0 48 8b 1b 48 03 5d a8 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 0b 09 00 00 44 0f b6 33 44 89 f0 44 08 e8
RSP: 0018:ffffc900026c6638 EFLAGS: 00010206
RAX: 0000000000000003 RBX: 000000000000001b RCX: dffffc0000000000
RDX: ffff88810fa35000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900026c66b0 R08: ffff88810f76861f R09: 1ffff11021eed0c3
R10: dffffc0000000000 R11: ffffed1021eed0c4 R12: ffff88810fb4e000
R13: 0000000000000001 R14: ffff88810fb4e0c0 R15: ffff88810f8e21b8
FS:  00007fb9974336c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000010ac0 CR3: 000000010f6e5000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	80 3c 08 00          	cmpb   $0x0,(%rax,%rcx,1)
   4:	74 08                	je     0xe
   6:	48 89 df             	mov    %rbx,%rdi
   9:	e8 c8 19 92 ff       	call   0xff9219d6
   e:	4c 89 75 b0          	mov    %r14,-0x50(%rbp)
  12:	48 8b 1b             	mov    (%rbx),%rbx
  15:	48 03 5d a8          	add    -0x58(%rbp),%rbx
  19:	48 89 d8             	mov    %rbx,%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 0b 09 00 00    	jne    0x941
  36:	44 0f b6 33          	movzbl (%rbx),%r14d
  3a:	44 89 f0             	mov    %r14d,%eax
  3d:	44 08 e8             	or     %r13b,%al

Crashes (71):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/11/03 21:04 android13-5.10-lts f61a392235e0 e2d35131 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-10 general protection fault in update_sit_entry
2026/05/19 07:07 android13-5.10-lts f5a34916f66d 9f74d399 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-10 general protection fault in update_sit_entry
2026/01/25 05:48 android13-5.10-lts 5601baec60aa 40acda8a .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-10 general protection fault in update_sit_entry
2026/01/01 12:09 android13-5.10-lts e253c52bbdfc d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-10 general protection fault in update_sit_entry
2025/10/11 06:45 android13-5.10-lts 2ece552169c2 ff1712fe .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-10 general protection fault in update_sit_entry
2025/07/19 18:25 android13-5.10-lts 6de38b5f6c2b 7117feec .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-10 general protection fault in update_sit_entry
2025/07/07 00:30 android13-5.10-lts 59e9a7228857 4f67c4ae .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-10 general protection fault in update_sit_entry
2025/03/14 15:24 android13-5.10-lts fc9aa81462ee e2826670 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-10 general protection fault in update_sit_entry
2025/03/14 08:47 android13-5.10-lts 3f5f2283d684 e2826670 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-10 general protection fault in update_sit_entry
2025/03/14 05:17 android13-5.10-lts 3f5f2283d684 e2826670 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-10 general protection fault in update_sit_entry
2025/03/02 05:15 android13-5.10-lts 3f5f2283d684 c3901742 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-10 general protection fault in update_sit_entry
2024/11/29 11:28 android13-5.10-lts 139a6bb26d9d 5df23865 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-10 general protection fault in update_sit_entry
2026/08/30 02:07 android13-5.10-lts 174d3ccb72b8 2f52988a .config strace log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro #1 (corrupt fs)] [mounted in repro #2 (corrupt fs)] ci2-android-5-10 general protection fault in update_sit_entry
2024/11/27 06:45 android13-5.10-lts 139a6bb26d9d 52b38cc1 .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-10 general protection fault in update_sit_entry
2026/11/01 21:55 android13-5.10-lts f61a392235e0 25a0ae84 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/10/04 16:24 android13-5.10-lts 42d4fb705937 57bbd979 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/09/28 02:29 android13-5.10-lts c5d8ec7afea2 a3c7249d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/09/18 20:01 android13-5.10-lts 452567d1985b 853b104b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/09/09 07:41 android13-5.10-lts 452567d1985b 8387c273 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/08/31 15:15 android13-5.10-lts 174d3ccb72b8 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/08/30 01:10 android13-5.10-lts 174d3ccb72b8 2f52988a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/08/13 07:23 android13-5.10-lts e334a66065d3 359b2492 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/07/31 08:52 android13-5.10-lts 50b3a256e550 aaffb173 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/07/14 09:10 android13-5.10-lts 50b3a256e550 2130f682 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/07/11 11:56 android13-5.10-lts 50b3a256e550 d78ea535 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/06/29 08:57 android13-5.10-lts 79e905dd56a7 fb92f11c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/06/23 07:03 android13-5.10-lts 72aefab72b3d 5a630be6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/06/23 00:18 android13-5.10-lts 72aefab72b3d 5a630be6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/05/26 10:55 android13-5.10-lts f5a34916f66d a3e47276 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/05/25 23:12 android13-5.10-lts f5a34916f66d c69befb3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/05/25 17:06 android13-5.10-lts f5a34916f66d c69befb3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/05/23 23:59 android13-5.10-lts f5a34916f66d c69befb3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/05/23 19:36 android13-5.10-lts f5a34916f66d c69befb3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/05/23 17:47 android13-5.10-lts f5a34916f66d c69befb3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/05/22 06:25 android13-5.10-lts f5a34916f66d 70ae9b03 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/05/19 06:22 android13-5.10-lts f5a34916f66d 9f74d399 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/05/03 22:56 android13-5.10-lts 7ae299a5827a a0d91488 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/04/20 23:30 android13-5.10-lts cc0ae2abdc73 e65da4ee .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/03/31 23:34 android13-5.10-lts cc0ae2abdc73 fb8b2c26 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/03/21 19:15 android13-5.10-lts 9136079e403a 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/03/04 22:43 android13-5.10-lts dad37bbb13a8 e6b6b96b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/03/04 22:42 android13-5.10-lts dad37bbb13a8 e6b6b96b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/03/04 22:42 android13-5.10-lts dad37bbb13a8 e6b6b96b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/03/01 16:30 android13-5.10-lts dad37bbb13a8 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/02/25 21:00 android13-5.10-lts e8b14e1cefe8 94a9671e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/02/23 01:54 android13-5.10-lts e8b14e1cefe8 6e7b5511 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/02/21 03:56 android13-5.10-lts e8b14e1cefe8 6e7b5511 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/02/16 23:44 android13-5.10-lts e8b14e1cefe8 5d52cba5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/02/15 16:46 android13-5.10-lts e8b14e1cefe8 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2026/01/28 17:42 android13-5.10-lts 186f761c519d 004c195c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2025/12/19 00:48 android13-5.10-lts e253c52bbdfc d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2025/12/12 23:44 android13-5.10-lts 9286af17ed5f d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2025/11/02 06:45 android13-5.10-lts ab3e1c0dd1ff 2c50b6a9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2025/10/25 16:54 android13-5.10-lts 2ece552169c2 c0460fcd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2025/10/20 19:18 android13-5.10-lts 2ece552169c2 d422939c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2025/09/18 11:56 android13-5.10-lts 911f602c2237 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2025/08/17 18:10 android13-5.10-lts 1154f779f3f3 1804e95e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2025/07/26 20:48 android13-5.10-lts ad9a98ef27a4 fb8f743d .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-5-10 general protection fault in update_sit_entry
2025/01/08 23:49 android13-5.10-lts 49e8ba0a684f f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2025/01/08 20:57 android13-5.10-lts 49e8ba0a684f f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2025/01/06 14:02 android13-5.10-lts 49e8ba0a684f f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2024/11/29 11:13 android13-5.10-lts 139a6bb26d9d 5df23865 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
2024/11/27 04:51 android13-5.10-lts 139a6bb26d9d 52b38cc1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in update_sit_entry
* Struck through repros no longer work on HEAD.