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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: 803d, last: 4d12h
▶ ▼ Similar bugs (4)
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 27 3d08h 832d 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 33 11d 929d 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 7 26d 48d 0/1 premoderation: reported C repro on 2025/09/27 02:54
android-6-12 general protection fault in filename_create 2 1 138d 138d 0/1 auto-obsoleted due to no activity on 2025/09/26 14:56
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
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
2025/07/01 11:49 6m retest repro android13-5.10-lts report log
2025/07/01 11:49 28m retest repro android13-5.10-lts report log
2025/07/01 11:49 3h07m retest repro android13-5.10-lts report log
2025/07/01 11:49 2h42m retest repro android13-5.10-lts report log
2025/07/01 11:49 6m 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 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 PID: 355 Comm: syz.2.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
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+0x201/0x680 fs/namei.c:3613
Code: 48 3d 01 f0 ff ff 72 11 e8 3c 56 bb ff 49 bd 00 00 00 00 00 fc ff df eb 5c 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 e7 03 00 00 41 8b 1e 89 de 81 e6 00 00 70
RSP: 0018:ffffc90002d77d80 EFLAGS: 00010203
RAX: 0000000000000001 RBX: 0000000000000600 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff88810bbd62c0
RBP: ffffc90002d77e78 R08: dffffc0000000000 R09: ffffed10219eac0c
R10: ffffed10219eac0c R11: 1ffff110219eac0b R12: ffffc90002d77ec0
R13: ffffc90002d77ec0 R14: 000000000000000c R15: ffffc90002d77ec8
FS:  00007f15ecfee6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000afe0 CR3: 000000010f6ff000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 user_path_create fs/namei.c:3665 [inline]
 do_mknodat+0xcf/0x5a0 fs/namei.c:3729
 __do_sys_mknod fs/namei.c:3768 [inline]
 __se_sys_mknod fs/namei.c:3766 [inline]
 __x64_sys_mknod+0x80/0x90 fs/namei.c:3766
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f15ed17e6c9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f15ecfee038 EFLAGS: 00000246 ORIG_RAX: 0000000000000085
RAX: ffffffffffffffda RBX: 00007f15ed3d4fa0 RCX: 00007f15ed17e6c9
RDX: 0000000000000704 RSI: 00000000ffffc000 RDI: 00002000000002c0
RBP: 00007f15ed200f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f15ed3d5038 R14: 00007f15ed3d4fa0 R15: 00007ffef1d64408
Modules linked in:
---[ end trace 93e417da76a325cc ]---
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+0x201/0x680 fs/namei.c:3613
Code: 48 3d 01 f0 ff ff 72 11 e8 3c 56 bb ff 49 bd 00 00 00 00 00 fc ff df eb 5c 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 e7 03 00 00 41 8b 1e 89 de 81 e6 00 00 70
RSP: 0018:ffffc90002d77d80 EFLAGS: 00010203
RAX: 0000000000000001 RBX: 0000000000000600 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff88810bbd62c0
RBP: ffffc90002d77e78 R08: dffffc0000000000 R09: ffffed10219eac0c
R10: ffffed10219eac0c R11: 1ffff110219eac0b R12: ffffc90002d77ec0
R13: ffffc90002d77ec0 R14: 000000000000000c R15: ffffc90002d77ec8
FS:  00007f15ecfee6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000afe0 CR3: 000000010f6ff000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	72 11                	jb     0x19
   8:	e8 3c 56 bb ff       	call   0xffbb5649
   d:	49 bd 00 00 00 00 00 	movabs $0xdffffc0000000000,%r13
  14:	fc ff df
  17:	eb 5c                	jmp    0x75
  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 e7 03 00 00    	jne    0x41d
  36:	41 8b 1e             	mov    (%r14),%ebx
  39:	89 de                	mov    %ebx,%esi
  3b:	81                   	.byte 0x81
  3c:	e6 00                	out    %al,$0x0
  3e:	00                   	.byte 0x0
  3f:	70                   	.byte 0x70

Crashes (101):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
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
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
2024/12/04 00:35 android13-5.10-lts ab7c0abef9cf b50eb251 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2024/11/29 08:50 android13-5.10-lts 139a6bb26d9d 5df23865 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2024/11/25 02:03 android13-5.10-lts b14940b90491 68da6d95 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2024/11/22 06:48 android13-5.10-lts b14940b90491 4b25d554 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2024/11/20 07:57 android13-5.10-lts 6a01908517df 7d02db5a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2024/11/19 15:12 android13-5.10-lts 6a01908517df 571351cb .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2024/11/16 12:52 android13-5.10-lts 6a01908517df cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in filename_create
2024/11/11 19:44 android13-5.10-lts 6a01908517df 0c4b1325 .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.