syzbot


general protection fault in step_into

Status: upstream: reported C repro on 2023/05/14 14:12
Reported-by: syzbot+0eeb26335ddeb506c6d0@syzkaller.appspotmail.com
First crash: 319d, last: 8h25m
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 step_into (log)
Repro: C syz .config
  
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream general protection fault in step_into fs 1 1306d 1302d 0/26 auto-closed as invalid on 2020/11/28 01:59
android-5-15 general protection fault in step_into origin:downstream C done 65 3d11h 319d 0/2 upstream: reported C repro on 2023/05/14 14:01
android-6-1 general protection fault in step_into origin:downstream C done 61 1d05h 319d 0/2 upstream: reported C repro on 2023/05/14 14:12
upstream BUG: unable to handle kernel paging request in step_into ntfs3 C error done 5 82d 449d 0/26 upstream: reported C repro on 2023/01/04 08:32
Last patch testing requests (10)
Created Duration User Patch Repo Result
2024/02/10 23:00 5m retest repro android13-5.10-lts report log
2024/02/10 23:00 6m retest repro android13-5.10-lts report log
2024/02/10 23:00 6m retest repro android13-5.10-lts report log
2024/02/10 23:00 6m retest repro android13-5.10-lts report log
2024/02/10 23:00 4m retest repro android13-5.10-lts report log
2023/12/29 20:21 7m retest repro android13-5.10-lts report log
2023/12/29 20:21 5m retest repro android13-5.10-lts report log
2023/11/30 22:45 7m retest repro android13-5.10-lts report log
2023/11/30 22:45 5m retest repro android13-5.10-lts report log
2023/11/30 22:45 16m retest repro android13-5.10-lts report 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: 1 PID: 290 Comm: syz-executor559 Not tainted 5.10.209-syzkaller-00435-gdd976ecce2ce #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:traverse_mounts fs/namei.c:1357 [inline]
RIP: 0010:handle_mounts fs/namei.c:1477 [inline]
RIP: 0010:step_into+0x1b9/0xec0 fs/namei.c:1782
Code: 24 0f 85 cf 0a 00 00 44 8b 3a 43 80 3c 2c 00 74 0a 48 8b 7c 24 18 e8 66 9d f3 ff 48 8b 9c 24 b8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 c1 0a 00 00 8b 1b 89 de 81 e6 00 00 07
RSP: 0018:ffffc90000b67820 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff88811edde2c0
RDX: ffffc90000b67c98 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000b67950 R08: ffffffff81b4833f R09: ffffed1023a26c95
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200016cf1b
R13: dffffc0000000000 R14: ffffc90000b67c60 R15: 0000000000000019
FS:  00007f85def456c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020004220 CR3: 000000011ef87000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 walk_component+0x359/0x610 fs/namei.c:1958
 link_path_walk+0x5c7/0xbd0
 path_lookupat+0xa0/0x450 fs/namei.c:2426
 filename_lookup+0x26a/0x6f0 fs/namei.c:2460
 user_path_at_empty+0x40/0x50 fs/namei.c:2740
 user_path_at include/linux/namei.h:60 [inline]
 do_mount fs/namespace.c:3250 [inline]
 __do_sys_mount fs/namespace.c:3461 [inline]
 __se_sys_mount+0x285/0x3b0 fs/namespace.c:3438
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3438
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7f85def832b9
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:00007f85def45218 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f85df00d3e8 RCX: 00007f85def832b9
RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000000
RBP: 00007f85df00d3e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f85defda018
R13: 00007f85defda00e R14: 0030656c69662f2e R15: 00007f85defda004
Modules linked in:
---[ end trace 570e4aae4fab1c64 ]---
RIP: 0010:traverse_mounts fs/namei.c:1357 [inline]
RIP: 0010:handle_mounts fs/namei.c:1477 [inline]
RIP: 0010:step_into+0x1b9/0xec0 fs/namei.c:1782
Code: 24 0f 85 cf 0a 00 00 44 8b 3a 43 80 3c 2c 00 74 0a 48 8b 7c 24 18 e8 66 9d f3 ff 48 8b 9c 24 b8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 c1 0a 00 00 8b 1b 89 de 81 e6 00 00 07
RSP: 0018:ffffc90000b67820 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff88811edde2c0
RDX: ffffc90000b67c98 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000b67950 R08: ffffffff81b4833f R09: ffffed1023a26c95
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200016cf1b
R13: dffffc0000000000 R14: ffffc90000b67c60 R15: 0000000000000019
FS:  00007f85def456c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020004220 CR3: 000000011ef87000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	24 0f                	and    $0xf,%al
   2:	85 cf                	test   %ecx,%edi
   4:	0a 00                	or     (%rax),%al
   6:	00 44 8b 3a          	add    %al,0x3a(%rbx,%rcx,4)
   a:	43 80 3c 2c 00       	cmpb   $0x0,(%r12,%r13,1)
   f:	74 0a                	je     0x1b
  11:	48 8b 7c 24 18       	mov    0x18(%rsp),%rdi
  16:	e8 66 9d f3 ff       	call   0xfff39d81
  1b:	48 8b 9c 24 b8 00 00 	mov    0xb8(%rsp),%rbx
  22:	00
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 0f b6 04 28       	movzbl (%rax,%r13,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	0f 85 c1 0a 00 00    	jne    0xaf8
  37:	8b 1b                	mov    (%rbx),%ebx
  39:	89 de                	mov    %ebx,%esi
  3b:	81                   	.byte 0x81
  3c:	e6 00                	out    %al,$0x0
  3e:	00 07                	add    %al,(%rdi)

Crashes (104):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/02/22 21:32 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 step_into
2024/01/08 07:08 android13-5.10-lts f7977422e132 d0304e9c .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/01/03 16:31 android13-5.10-lts f7977422e132 fb427a07 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-5-10 general protection fault in step_into
2023/09/25 03:22 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 step_into
2023/09/23 08:27 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 step_into
2023/08/26 11:26 android13-5.10-lts c6a1fbd8e4aa 7ba13a15 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2023/05/14 14:41 android13-5.10-lts 43c801dc3325 2b9ba477 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2023/05/14 14:19 android13-5.10-lts 43c801dc3325 2b9ba477 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2023/05/14 14:02 android13-5.10-lts 43c801dc3325 2b9ba477 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/28 12:03 android13-5.10-lts e7daca75b4c3 120789fd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/28 09:37 android13-5.10-lts e7daca75b4c3 120789fd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/28 01:46 android13-5.10-lts e7daca75b4c3 120789fd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/27 11:19 android13-5.10-lts e7daca75b4c3 454571b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/27 03:53 android13-5.10-lts e7daca75b4c3 454571b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/27 01:04 android13-5.10-lts e7daca75b4c3 454571b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/26 21:34 android13-5.10-lts e7daca75b4c3 454571b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/26 10:57 android13-5.10-lts e7daca75b4c3 bcd9b39f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/26 07:43 android13-5.10-lts e7daca75b4c3 bcd9b39f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/26 04:23 android13-5.10-lts e7daca75b4c3 bcd9b39f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/25 08:46 android13-5.10-lts e7daca75b4c3 0ea90952 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/24 22:28 android13-5.10-lts e7daca75b4c3 0ea90952 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/24 17:04 android13-5.10-lts e7daca75b4c3 0ea90952 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/24 07:25 android13-5.10-lts e7daca75b4c3 0ea90952 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/24 05:56 android13-5.10-lts e7daca75b4c3 0ea90952 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/23 20:23 android13-5.10-lts e7daca75b4c3 0ea90952 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/23 02:13 android13-5.10-lts e7daca75b4c3 4b6cdce6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/22 20:45 android13-5.10-lts e7daca75b4c3 4b6cdce6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/20 01:53 android13-5.10-lts dd976ecce2ce e104824c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/19 05:20 android13-5.10-lts dd976ecce2ce baa80228 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/19 04:02 android13-5.10-lts dd976ecce2ce baa80228 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/19 00:05 android13-5.10-lts dd976ecce2ce baa80228 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/18 22:44 android13-5.10-lts dd976ecce2ce baa80228 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/18 18:14 android13-5.10-lts dd976ecce2ce baa80228 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/18 07:51 android13-5.10-lts dd976ecce2ce d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/18 03:18 android13-5.10-lts dd976ecce2ce d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/17 23:57 android13-5.10-lts dd976ecce2ce d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/17 14:46 android13-5.10-lts dd976ecce2ce d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/17 11:35 android13-5.10-lts dd976ecce2ce d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/17 09:18 android13-5.10-lts dd976ecce2ce d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/17 03:29 android13-5.10-lts dd976ecce2ce d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/16 21:48 android13-5.10-lts dd976ecce2ce d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/16 19:34 android13-5.10-lts dd976ecce2ce d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/16 11:22 android13-5.10-lts dd976ecce2ce d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/15 18:57 android13-5.10-lts dd976ecce2ce d615901c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/13 17:04 android13-5.10-lts dd976ecce2ce db5b7ff0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/13 08:42 android13-5.10-lts dd976ecce2ce db5b7ff0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/09 15:21 android13-5.10-lts dd976ecce2ce 6ee49f2e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/09 12:02 android13-5.10-lts dd976ecce2ce 6ee49f2e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/03/09 00:11 android13-5.10-lts dd976ecce2ce 8e75c913 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/02/29 09:29 android13-5.10-lts dd976ecce2ce 352ab904 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/02/28 00:31 android13-5.10-lts dd976ecce2ce d367cbe5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/02/19 22:48 android13-5.10-lts dd976ecce2ce 3af7dd65 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2024/02/15 20:11 android13-5.10-lts 57ffa73b11b0 fd39cf6f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
2023/05/14 13:45 android13-5.10-lts 43c801dc3325 2b9ba477 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in step_into
* Struck through repros no longer work on HEAD.