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general protection fault in path_openat

Status: upstream: reported C repro on 2023/05/21 01:33
Reported-by: syzbot+ff97a14204e1de3f1a08@syzkaller.appspotmail.com
First crash: 953d, last: 6d16h
Cause bisection: introduced by (bisect log) :
commit 6be5b06e4195b002c52a1c2c82573ea7a76ce111
Author: Daniel Rosenberg <drosen@google.com>
Date: Thu Dec 2 22:38:56 2021 +0000

  ANDROID: fuse-bpf v1

Crash: general protection fault in path_openat (log)
Repro: C syz .config
  
▶ ▼ Similar bugs (8)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-6-12 general protection fault in path_openat origin:downstream 2 C 2 110d 122d 0/1 premoderation: reported C repro on 2025/08/28 16:04
upstream BUG: unable to handle kernel paging request in path_openat reiserfs 8 C error inconclusive 52 726d 1123d 0/29 auto-obsoleted due to no activity on 2024/04/12 10:28
linux-4.19 general protection fault in path_openat 2 C done 13 2154d 2160d 1/1 fixed on 2020/03/06 08:34
upstream general protection fault in path_openat ext4 2 C done 7 2158d 2158d 15/29 fixed on 2020/02/18 14:31
linux-4.14 general protection fault in path_openat 2 C done 40 2154d 2160d 1/1 fixed on 2020/03/06 21:15
android-5-15 general protection fault in path_openat origin:downstream 2 C done 16 18d 953d 0/2 upstream: reported C repro on 2023/05/21 01:53
android-6-1 general protection fault in path_openat origin:downstream 2 C done error 12 10h38m 953d 0/2 upstream: reported C repro on 2023/05/21 01:53
android-54 general protection fault in path_openat 2 syz 26 2153d 2160d 1/2 fixed on 2021/10/12 13:38
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2025/12/09 11:55 14m retest repro android13-5.10-lts report log
2025/11/22 23:57 6m retest repro android13-5.10-lts report log
2025/11/22 23:57 12m retest repro android13-5.10-lts report log
2025/11/22 23:57 8m retest repro android13-5.10-lts report log
2025/11/22 23:57 5m retest repro android13-5.10-lts report log
2025/10/29 17:39 16m retest repro android13-5.10-lts report log
2025/10/29 17:39 12m retest repro android13-5.10-lts report log
2025/10/29 17:39 15m retest repro android13-5.10-lts report log
2025/09/30 09:18 7m retest repro android13-5.10-lts report log
2025/09/12 19:00 5m retest repro android13-5.10-lts report log
▶ ▼ Fix bisection attempts (5)
Created Duration User Patch Repo Result
2025/03/12 16:40 2h44m bisect fix android13-5.10-lts OK (0) job log log
2024/02/08 09:26 33m bisect fix android13-5.10-lts OK (0) job log log
2023/12/10 21:39 40m bisect fix android13-5.10-lts OK (0) job log log
2023/08/06 05:58 1h19m bisect fix android13-5.10-lts OK (0) job log log
2023/06/20 11:57 15m bisect fix android13-5.10-lts OK (0) job log log

Sample crash report:
process 'syz.2.17' launched './file0/file0' with NULL argv: empty string added
general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 1 PID: 377 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:atomic_open fs/namei.c:3138 [inline]
RIP: 0010:lookup_open fs/namei.c:3227 [inline]
RIP: 0010:open_last_lookups fs/namei.c:3325 [inline]
RIP: 0010:path_openat+0x1738/0x3160 fs/namei.c:3514
Code: ae 62 02 00 49 63 de 4c 8b 74 24 38 e9 86 fb ff ff e8 bc 79 bb ff 44 8b 6c 24 14 44 8b a4 24 80 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 75 09 00 00 44 8b 33 be 00 00 70 00 44
RSP: 0018:ffffc900022877e0 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff88810d5393c0
RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff88810d5393c0
RBP: ffffc900022879f0 R08: dffffc0000000000 R09: ffffed1021a7bab6
R10: ffffed1021a7bab6 R11: 1ffff11021a7bab5 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88810fc4d698 R15: dffffc0000000000
FS:  00007f728f4546c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f728f453f98 CR3: 000000010fbee000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_filp_open+0x1b3/0x3e0 fs/namei.c:3544
 do_open_execat+0x144/0x930 fs/exec.c:921
 bprm_execve+0x483/0x15e0 fs/exec.c:1821
 do_execveat_common+0x918/0xaa0 fs/exec.c:1954
 do_execveat fs/exec.c:2035 [inline]
 __do_sys_execveat fs/exec.c:2111 [inline]
 __se_sys_execveat fs/exec.c:2103 [inline]
 __x64_sys_execveat+0xdb/0xf0 fs/exec.c:2103
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f728f605749
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:00007f728f454038 EFLAGS: 00000246 ORIG_RAX: 0000000000000142
RAX: ffffffffffffffda RBX: 00007f728f85c090 RCX: 00007f728f605749
RDX: 0000000000000000 RSI: 0000200000000000 RDI: ffffffffffffff9c
RBP: 00007f728f689f91 R08: 0000000000001000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f728f85c128 R14: 00007f728f85c090 R15: 00007fffbf99d748
Modules linked in:
---[ end trace de0b650dd64e33fa ]---
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:atomic_open fs/namei.c:3138 [inline]
RIP: 0010:lookup_open fs/namei.c:3227 [inline]
RIP: 0010:open_last_lookups fs/namei.c:3325 [inline]
RIP: 0010:path_openat+0x1738/0x3160 fs/namei.c:3514
Code: ae 62 02 00 49 63 de 4c 8b 74 24 38 e9 86 fb ff ff e8 bc 79 bb ff 44 8b 6c 24 14 44 8b a4 24 80 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 75 09 00 00 44 8b 33 be 00 00 70 00 44
RSP: 0018:ffffc900022877e0 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000008 RCX: ffff88810d5393c0
RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff88810d5393c0
RBP: ffffc900022879f0 R08: dffffc0000000000 R09: ffffed1021a7bab6
R10: ffffed1021a7bab6 R11: 1ffff11021a7bab5 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88810fc4d698 R15: dffffc0000000000
FS:  00007f728f4546c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f728f454d58 CR3: 000000010fbee000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	02 00                	add    (%rax),%al
   2:	49 63 de             	movslq %r14d,%rbx
   5:	4c 8b 74 24 38       	mov    0x38(%rsp),%r14
   a:	e9 86 fb ff ff       	jmp    0xfffffb95
   f:	e8 bc 79 bb ff       	call   0xffbb79d0
  14:	44 8b 6c 24 14       	mov    0x14(%rsp),%r13d
  19:	44 8b a4 24 80 00 00 	mov    0x80(%rsp),%r12d
  20:	00
  21:	48 89 d8             	mov    %rbx,%rax
  24:	48 c1 e8 03          	shr    $0x3,%rax
* 28:	42 0f b6 04 38       	movzbl (%rax,%r15,1),%eax <-- trapping instruction
  2d:	84 c0                	test   %al,%al
  2f:	0f 85 75 09 00 00    	jne    0x9aa
  35:	44 8b 33             	mov    (%rbx),%r14d
  38:	be 00 00 70 00       	mov    $0x700000,%esi
  3d:	44                   	rex.R

Crashes (42):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/12/22 17:52 android13-5.10-lts e253c52bbdfc d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2025/08/28 14:43 android13-5.10-lts 1154f779f3f3 e12e5ba4 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2025/04/05 23:28 android13-5.10-lts 094fc3778d6b 1c65791e .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2025/04/05 23:00 android13-5.10-lts 094fc3778d6b 1c65791e .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2024/10/12 09:28 android13-5.10-lts e5e5644ea27f 084d8178 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2024/07/29 00:42 android13-5.10-lts fd58936f3c1f 46eb10b7 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2024/03/01 04:16 android13-5.10-lts dd976ecce2ce 352ab904 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2023/09/14 05:07 android13-5.10-lts a27512601c2d 0b6a67ac .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2023/05/21 01:27 android13-5.10-lts 43c801dc3325 4bce1a3e .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2025/12/22 17:08 android13-5.10-lts e253c52bbdfc d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2025/10/15 09:54 android13-5.10-lts 2ece552169c2 b6605ba8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2025/10/05 17:05 android13-5.10-lts 0a91f603159e 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2025/09/16 04:28 android13-5.10-lts 911f602c2237 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2025/08/28 13:46 android13-5.10-lts 1154f779f3f3 e12e5ba4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2025/01/05 06:10 android13-5.10-lts 49e8ba0a684f f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2025/01/05 01:21 android13-5.10-lts 49e8ba0a684f f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2025/01/05 01:21 android13-5.10-lts 49e8ba0a684f f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2024/11/02 16:10 android13-5.10-lts e5e5644ea27f f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2024/09/07 17:08 android13-5.10-lts 1c5354a314ea 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2024/07/28 23:59 android13-5.10-lts fd58936f3c1f 46eb10b7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2024/05/20 19:54 android13-5.10-lts 70b6ab09a34b c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2024/05/02 01:03 android13-5.10-lts 70b6ab09a34b 3ba885bc .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2024/04/28 04:09 android13-5.10-lts 70b6ab09a34b 07b455f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2024/04/26 02:25 android13-5.10-lts 70b6ab09a34b 8bdc0f22 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2024/04/24 12:21 android13-5.10-lts 70b6ab09a34b 21339d7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2024/04/20 18:43 android13-5.10-lts 8d3bb9cb3b7d af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2024/03/28 07:51 android13-5.10-lts e7daca75b4c3 120789fd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2024/03/24 20:53 android13-5.10-lts e7daca75b4c3 0ea90952 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2024/03/18 11:57 android13-5.10-lts dd976ecce2ce d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2024/03/17 10:55 android13-5.10-lts dd976ecce2ce d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2024/03/16 14:56 android13-5.10-lts dd976ecce2ce d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2024/03/16 12:24 android13-5.10-lts dd976ecce2ce d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2024/03/07 10:20 android13-5.10-lts dd976ecce2ce f39a7eed .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2024/03/01 22:52 android13-5.10-lts dd976ecce2ce 83acf9e0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2024/03/01 03:08 android13-5.10-lts dd976ecce2ce 352ab904 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2023/11/10 19:42 android13-5.10-lts d30b996835c0 45e9b83e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2023/11/01 11:56 android13-5.10-lts 47abbdeca36f 69904c9f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2023/09/27 06:45 android13-5.10-lts a27512601c2d 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2023/09/14 04:43 android13-5.10-lts a27512601c2d 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2023/06/26 07:27 android13-5.10-lts 571f442f6752 79782afc .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2023/06/23 00:31 android13-5.10-lts 571f442f6752 79782afc .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
2023/05/21 01:10 android13-5.10-lts 43c801dc3325 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in path_openat
* Struck through repros no longer work on HEAD.