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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: 550d, last: 4d22h
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 (7)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: unable to handle kernel paging request in path_openat reiserfs C error inconclusive 52 323d 721d 0/28 auto-obsoleted due to no activity on 2024/04/12 10:28
linux-4.19 general protection fault in path_openat C done 13 1751d 1757d 1/1 fixed on 2020/03/06 08:34
upstream general protection fault in path_openat ext4 C done 7 1755d 1755d 15/28 fixed on 2020/02/18 14:31
linux-4.14 general protection fault in path_openat C done 40 1751d 1757d 1/1 fixed on 2020/03/06 21:15
android-5-15 general protection fault in path_openat origin:downstream C done 7 5d20h 550d 0/2 upstream: reported C repro on 2023/05/21 01:53
android-6-1 general protection fault in path_openat origin:downstream C done error 6 84d 550d 0/2 upstream: reported C repro on 2023/05/21 01:53
android-54 general protection fault in path_openat syz 26 1750d 1757d 1/2 fixed on 2021/10/12 13:38
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2024/11/16 18:51 13m retest repro android13-5.10-lts report log
2024/10/26 10:47 7m retest repro android13-5.10-lts report log
2024/10/26 10:47 14m retest repro android13-5.10-lts report log
2024/10/26 10:47 5m retest repro android13-5.10-lts report log
2024/09/21 17:24 14m retest repro android13-5.10-lts report log
2024/08/31 03:17 5m retest repro android13-5.10-lts report log
2024/08/12 00:49 17m retest repro android13-5.10-lts report log
2024/07/25 01:57 9m retest repro android13-5.10-lts report log
2024/06/22 03:00 14m retest repro android13-5.10-lts report log
2024/06/22 03:00 14m retest repro android13-5.10-lts report log
▶ ▼ Fix bisection attempts (4)
Created Duration User Patch Repo Result
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:
general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 0 PID: 290 Comm: syz-executor216 Not tainted 5.10.226-syzkaller-00709-ge5e5644ea27f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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:3130 [inline]
RIP: 0010:lookup_open fs/namei.c:3219 [inline]
RIP: 0010:open_last_lookups fs/namei.c:3317 [inline]
RIP: 0010:path_openat+0x17ab/0x3000 fs/namei.c:3506
Code: b6 04 30 84 c0 0f 85 d9 07 00 00 48 8b 44 24 30 80 60 01 f8 e9 69 ee ff ff e8 21 dd b6 ff 4c 8b 64 24 20 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 0f 85 8f 07 00 00 41 8b 1f be 00 00 70 00 21
RSP: 0018:ffffc90000ae7940 EFLAGS: 00010203
RAX: 0000000000000002 RBX: ffff888118350918 RCX: ffff88811e1893c0
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000
RBP: ffffc90000ae7b70 R08: ffffffff81b68a38 R09: ffffed10239db1e8
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811ced8f10
R13: 0000000000008000 R14: dffffc0000000000 R15: 0000000000000017
FS:  00007fa57a9286c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa57a928d58 CR3: 000000012171a000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_filp_open+0x21c/0x460 fs/namei.c:3536
 do_sys_openat2+0x13f/0x710 fs/open.c:1217
 do_sys_open fs/open.c:1233 [inline]
 __do_sys_openat fs/open.c:1249 [inline]
 __se_sys_openat fs/open.c:1244 [inline]
 __x64_sys_openat+0x243/0x290 fs/open.c:1244
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fa57a9874b9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa57a928218 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fa57aa143f8 RCX: 00007fa57a9874b9
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 00000000ffffff9c
RBP: 00007fa57aa143f0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa57a9e1034
R13: 000000000000006e R14: 0030656c69662f30 R15: 2f30656c69662f2e
Modules linked in:
---[ end trace aaf3312f77c8c37e ]---
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:3130 [inline]
RIP: 0010:lookup_open fs/namei.c:3219 [inline]
RIP: 0010:open_last_lookups fs/namei.c:3317 [inline]
RIP: 0010:path_openat+0x17ab/0x3000 fs/namei.c:3506
Code: b6 04 30 84 c0 0f 85 d9 07 00 00 48 8b 44 24 30 80 60 01 f8 e9 69 ee ff ff e8 21 dd b6 ff 4c 8b 64 24 20 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 0f 85 8f 07 00 00 41 8b 1f be 00 00 70 00 21
RSP: 0018:ffffc90000ae7940 EFLAGS: 00010203
RAX: 0000000000000002 RBX: ffff888118350918 RCX: ffff88811e1893c0
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000000
RBP: ffffc90000ae7b70 R08: ffffffff81b68a38 R09: ffffed10239db1e8
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811ced8f10
R13: 0000000000008000 R14: dffffc0000000000 R15: 0000000000000017
FS:  00007fa57a9286c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055d2508f4970 CR3: 000000012171a000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	b6 04                	mov    $0x4,%dh
   2:	30 84 c0 0f 85 d9 07 	xor    %al,0x7d9850f(%rax,%rax,8)
   9:	00 00                	add    %al,(%rax)
   b:	48 8b 44 24 30       	mov    0x30(%rsp),%rax
  10:	80 60 01 f8          	andb   $0xf8,0x1(%rax)
  14:	e9 69 ee ff ff       	jmp    0xffffee82
  19:	e8 21 dd b6 ff       	call   0xffb6dd3f
  1e:	4c 8b 64 24 20       	mov    0x20(%rsp),%r12
  23:	4c 89 f8             	mov    %r15,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 0f b6 04 30       	movzbl (%rax,%r14,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	0f 85 8f 07 00 00    	jne    0x7c6
  37:	41 8b 1f             	mov    (%r15),%ebx
  3a:	be 00 00 70 00       	mov    $0x700000,%esi
  3f:	21                   	.byte 0x21

Crashes (30):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
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
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.