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general protection fault in filename_create

Status: upstream: reported C repro on 2023/09/02 15:10
Reported-by: syzbot+de3a4eb8ab7419d55ee5@syzkaller.appspotmail.com
First crash: 904d, last: 2d09h
▶ ▼ Similar bugs (5)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-6-1 general protection fault in filename_create origin:downstream 2 C done 35 3d06h 932d 0/2 upstream: reported C repro on 2023/08/05 10:34
android-5-15 general protection fault in filename_create origin:downstream 2 C error unreliable 40 10d 1030d 0/2 upstream: reported C repro on 2023/04/29 15:06
android-6-12 general protection fault in filename_create (2) origin:downstream 2 C 13 1d16h 148d 0/1 premoderation: reported C repro on 2025/09/27 02:54
android-6-12 general protection fault in filename_create 2 1 239d 239d 0/1 auto-obsoleted due to no activity on 2025/09/26 14:56
upstream BUG: corrupted list in filename_create fs 8 1 102d 98d 0/29 auto-obsoleted due to no activity on 2026/02/10 19:02
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2025/12/07 23:17 9m retest repro android13-5.10-lts report log
2025/12/07 23:17 6m retest repro android13-5.10-lts report log
2025/12/07 23:17 43m retest repro android13-5.10-lts report log
2025/12/07 23:17 40m retest repro android13-5.10-lts report log
2025/12/07 23:17 13m retest repro android13-5.10-lts report log
2025/10/24 02:32 7m retest repro android13-5.10-lts report log
2025/10/24 02:32 15m retest repro android13-5.10-lts report log
2025/10/24 02:32 15m retest repro android13-5.10-lts report log
2025/10/24 02:32 8m retest repro android13-5.10-lts report log
2025/10/24 02:32 8m retest repro android13-5.10-lts report log
▶ ▼ Fix bisection attempts (2)
Created Duration User Patch Repo Result
2024/01/14 16:40 52m bisect fix android13-5.10-lts OK (0) job log log
2023/11/22 09:01 35m bisect fix android13-5.10-lts OK (0) job log log

Sample crash report:
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: 355 Comm: syz.2.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__d_entry_type include/linux/dcache.h:400 [inline]
RIP: 0010:d_is_miss include/linux/dcache.h:405 [inline]
RIP: 0010:d_is_negative include/linux/dcache.h:451 [inline]
RIP: 0010:d_is_positive include/linux/dcache.h:461 [inline]
RIP: 0010:filename_create+0x209/0x680 fs/namei.c:3621
Code: 30 48 89 44 24 18 72 11 e8 34 a6 ba ff 49 bd 00 00 00 00 00 fc ff df eb 5f 48 89 c2 48 c1 ea 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 14 0a 84 d2 0f 85 e1 03 00 00 8b 18 89 de 81 e6 00 00 70 00
RSP: 0018:ffffc90000c57d80 EFLAGS: 00010207
RAX: 000000000000001f RBX: 0000000000000600 RCX: dffffc0000000000
RDX: 0000000000000003 RSI: 0000000000000003 RDI: ffff88810d7d0000
RBP: ffffc90000c57e78 R08: ffff88810d2679ef R09: 1ffff11021a4cf3d
R10: dffffc0000000000 R11: ffffed1021a4cf3e R12: ffff888110784400
R13: 0000000000000000 R14: ffff888110784400 R15: ffffc90000c57ec8
FS:  00007fb630a926c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb630c7b600 CR3: 000000010ec67000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 user_path_create fs/namei.c:3673 [inline]
 do_mknodat+0xcf/0x5a0 fs/namei.c:3737
 __do_sys_mknod fs/namei.c:3776 [inline]
 __se_sys_mknod fs/namei.c:3774 [inline]
 __x64_sys_mknod+0x80/0x90 fs/namei.c:3774
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fb630c2deb9
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:00007fb630a92028 EFLAGS: 00000246 ORIG_RAX: 0000000000000085
RAX: ffffffffffffffda RBX: 00007fb630ea8fa0 RCX: 00007fb630c2deb9
RDX: 0000000000000704 RSI: 0000000000000200 RDI: 00002000000002c0
RBP: 00007fb630c9bc1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb630ea9038 R14: 00007fb630ea8fa0 R15: 00007ffdd2e7b478
Modules linked in:
---[ end trace ed736d5e66e89717 ]---
RIP: 0010:__d_entry_type include/linux/dcache.h:400 [inline]
RIP: 0010:d_is_miss include/linux/dcache.h:405 [inline]
RIP: 0010:d_is_negative include/linux/dcache.h:451 [inline]
RIP: 0010:d_is_positive include/linux/dcache.h:461 [inline]
RIP: 0010:filename_create+0x209/0x680 fs/namei.c:3621
Code: 30 48 89 44 24 18 72 11 e8 34 a6 ba ff 49 bd 00 00 00 00 00 fc ff df eb 5f 48 89 c2 48 c1 ea 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 14 0a 84 d2 0f 85 e1 03 00 00 8b 18 89 de 81 e6 00 00 70 00
RSP: 0018:ffffc90000c57d80 EFLAGS: 00010207
RAX: 000000000000001f RBX: 0000000000000600 RCX: dffffc0000000000
RDX: 0000000000000003 RSI: 0000000000000003 RDI: ffff88810d7d0000
RBP: ffffc90000c57e78 R08: ffff88810d2679ef R09: 1ffff11021a4cf3d
R10: dffffc0000000000 R11: ffffed1021a4cf3e R12: ffff888110784400
R13: 0000000000000000 R14: ffff888110784400 R15: ffffc90000c57ec8
FS:  00007fb630a926c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb630c7b600 CR3: 000000010ec67000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	30 48 89             	xor    %cl,-0x77(%rax)
   3:	44 24 18             	rex.R and $0x18,%al
   6:	72 11                	jb     0x19
   8:	e8 34 a6 ba ff       	call   0xffbaa641
   d:	49 bd 00 00 00 00 00 	movabs $0xdffffc0000000000,%r13
  14:	fc ff df
  17:	eb 5f                	jmp    0x78
  19:	48 89 c2             	mov    %rax,%rdx
  1c:	48 c1 ea 03          	shr    $0x3,%rdx
  20:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  27:	fc ff df
* 2a:	0f b6 14 0a          	movzbl (%rdx,%rcx,1),%edx <-- trapping instruction
  2e:	84 d2                	test   %dl,%dl
  30:	0f 85 e1 03 00 00    	jne    0x417
  36:	8b 18                	mov    (%rax),%ebx
  38:	89 de                	mov    %ebx,%esi
  3a:	81 e6 00 00 70 00    	and    $0x700000,%esi

Crashes (116):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/02/08 08:28 android13-5.10-lts 58c592510fcd 4c131dc4 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/11/08 10:00 android13-5.10-lts ab3e1c0dd1ff 4e1406b4 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/08/18 08:18 android13-5.10-lts 1154f779f3f3 1804e95e .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/08/18 01:56 android13-5.10-lts 1154f779f3f3 1804e95e .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/06/17 05:56 android13-5.10-lts d76d4cd0623a cfebc887 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/05/27 22:26 android13-5.10-lts cf6ed0f1511d 874a1386 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/05/21 04:45 android13-5.10-lts 7e2543346ff7 b47f9e02 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/04/18 18:55 android13-5.10-lts ba8b8b193394 2a20f901 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/01/07 12:13 android13-5.10-lts 49e8ba0a684f f3558dbf .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2024/09/23 14:23 android13-5.10-lts 8d23314f588a 89298aad .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2024/09/23 09:02 android13-5.10-lts 8d23314f588a 6f888b75 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2024/09/15 00:11 android13-5.10-lts 8d23314f588a 08d8a733 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2024/06/21 05:00 android13-5.10-lts b58b8f9dad93 dac2aa43 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-10 general protection fault in filename_create
2024/02/23 10:16 android13-5.10-lts dd976ecce2ce 8d446f15 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2023/10/03 08:29 android13-5.10-lts a27512601c2d 65faba36 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2023/09/02 15:08 android13-5.10-lts c8ca447a86a2 696ea0d2 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2026/02/20 12:16 android13-5.10-lts e8b14e1cefe8 17d780d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2026/02/09 03:55 android13-5.10-lts 58c592510fcd 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2026/02/03 04:51 android13-5.10-lts 186f761c519d d78927dd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2026/01/25 08:07 android13-5.10-lts 5601baec60aa 40acda8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2026/01/14 02:27 android13-5.10-lts e253c52bbdfc d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2026/01/09 09:29 android13-5.10-lts e253c52bbdfc d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2026/01/04 08:50 android13-5.10-lts e253c52bbdfc d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2026/01/03 10:17 android13-5.10-lts e253c52bbdfc d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/12/24 13:19 android13-5.10-lts e253c52bbdfc d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/12/22 19:50 android13-5.10-lts e253c52bbdfc d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/12/17 17:10 android13-5.10-lts e253c52bbdfc d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/12/09 11:56 android13-5.10-lts 9286af17ed5f d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/11/23 23:06 android13-5.10-lts e625d26dbfea 4fb8ef37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/11/10 00:46 android13-5.10-lts ab3e1c0dd1ff 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/10/29 07:41 android13-5.10-lts 2ece552169c2 fd2207e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/10/24 21:14 android13-5.10-lts 2ece552169c2 c0460fcd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/10/09 08:51 android13-5.10-lts 2ece552169c2 7e2882b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/09/30 14:18 android13-5.10-lts 0a91f603159e 86341da6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/09/26 00:16 android13-5.10-lts 911f602c2237 0abd0691 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/09/25 09:51 android13-5.10-lts 911f602c2237 0abd0691 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/09/21 17:07 android13-5.10-lts 911f602c2237 67c37560 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/09/15 03:22 android13-5.10-lts 911f602c2237 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/09/14 11:05 android13-5.10-lts 911f602c2237 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/09/13 04:34 android13-5.10-lts 43931d9f8738 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/09/08 04:19 android13-5.10-lts 48647f2c6800 d291dd2d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/09/03 03:04 android13-5.10-lts 68c598f9eb32 96a211bc .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/08/31 04:42 android13-5.10-lts 1154f779f3f3 807a3b61 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/08/26 06:24 android13-5.10-lts 1154f779f3f3 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/08/09 21:57 android13-5.10-lts 1154f779f3f3 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/07/29 18:17 android13-5.10-lts ad9a98ef27a4 c4a95487 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/07/27 10:14 android13-5.10-lts ad9a98ef27a4 fb8f743d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/07/12 06:55 android13-5.10-lts 59e9a7228857 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/07/06 20:27 android13-5.10-lts 59e9a7228857 4f67c4ae .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/06/10 05:54 android13-5.10-lts d76d4cd0623a 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/05/25 10:29 android13-5.10-lts 7e2543346ff7 ed351ea7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/04/20 11:14 android13-5.10-lts ba8b8b193394 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/04/18 18:22 android13-5.10-lts ba8b8b193394 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/03/16 18:20 android13-5.10-lts fc9aa81462ee e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/03/13 19:58 android13-5.10-lts 3f5f2283d684 44be8b44 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/02/23 17:05 android13-5.10-lts 3f5f2283d684 d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/02/03 05:36 android13-5.10-lts fbe98d68b6b3 568559e4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/01/17 09:34 android13-5.10-lts fbe98d68b6b3 f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/01/07 20:35 android13-5.10-lts 49e8ba0a684f f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/01/07 11:39 android13-5.10-lts 49e8ba0a684f f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2025/01/01 05:11 android13-5.10-lts 49e8ba0a684f d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2024/12/08 22:51 android13-5.10-lts 550d1177dc67 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
* Struck through repros no longer work on HEAD.