syzbot


general protection fault in __device_attach

Status: upstream: reported C repro on 2023/01/03 07:29
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+8145e8e53f9bd803cfbd@syzkaller.appspotmail.com
First crash: 478d, last: 9d18h
Cause bisection: failed (error log, bisect log)
  
Bug presence (2)
Date Name Commit Repro Result
2023/05/03 lts (merge base) d86dfc4d95cd C [report] general protection fault in __device_attach
2023/05/03 upstream (ToT) 348551ddaf31 C [report] general protection fault in __device_attach
Similar bugs (7)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-54 general protection fault in __device_attach (2) C 5 34d 478d 0/2 upstream: reported C repro on 2023/01/03 03:10
upstream general protection fault in __device_attach kernel C done done 2 136d 773d 0/26 auto-obsoleted due to no activity on 2024/03/19 23:28
android-5-10 general protection fault in __device_attach (2) C error inconclusive 10 22d 477d 0/2 upstream: reported C repro on 2023/01/03 15:59
android-6-1 general protection fault in __device_attach origin:upstream C error 3 16d 329d 0/2 upstream: reported C repro on 2023/06/01 06:12
linux-4.19 general protection fault in __device_attach C error 35 423d 1231d 0/1 upstream: reported C repro on 2020/12/11 04:31
android-5-10 general protection fault in __device_attach 1 725d 725d 0/2 auto-closed as invalid on 2022/07/29 21:17
android-54 general protection fault in __device_attach 8 916d 1172d 0/2 auto-closed as invalid on 2022/02/18 18:30
Last patch testing requests (5)
Created Duration User Patch Repo Result
2024/04/15 15:50 11m retest repro android13-5.15-lts report log
2024/04/15 15:50 31m retest repro android13-5.15-lts report log
2024/01/29 01:48 12m retest repro android13-5.15-lts report log
2024/01/29 01:48 12m retest repro android13-5.15-lts report log
2023/01/03 07:37 9m tudor.ambarus@linaro.org upstream report log
Fix bisection attempts (10)
Created Duration User Patch Repo Result
2024/04/01 13:30 51m bisect fix android13-5.15-lts job log (0) log
2024/03/02 12:15 1h11m bisect fix android13-5.15-lts job log (0) log
2024/01/14 22:36 45m bisect fix android13-5.15-lts job log (0) log
2023/12/15 05:46 45m bisect fix android13-5.15-lts job log (0) log
2023/10/31 15:30 54m bisect fix android13-5.15-lts job log (0) log
2023/10/01 10:11 34m bisect fix android13-5.15-lts job log (0) log
2023/05/25 17:28 20m bisect fix android13-5.15-lts job log (0) log
2023/04/06 07:36 26m bisect fix android13-5.15-lts job log (0) log
2023/03/05 10:22 18m bisect fix android13-5.15-lts job log (0) log
2023/02/03 09:59 22m bisect fix android13-5.15-lts job log (0) log

Sample crash report:
general protection fault, probably for non-canonical address 0xdffffc000000001a: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000000d0-0x00000000000000d7]
CPU: 0 PID: 317 Comm: syz-executor244 Not tainted 5.15.106-syzkaller-00249-g19c0ed55a470 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:__device_attach+0xb4/0x510 drivers/base/dd.c:950
Code: 5c 24 68 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 0d 77 d1 fe 4c 8b 2b 49 8d 9d d0 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 0f 85 c8 03 00 00 0f b6 1b 89 de 83 e6 01 45
RSP: 0018:ffffc90000a47580 EFLAGS: 00010202
RAX: 000000000000001a RBX: 00000000000000d0 RCX: ffff88811ea6e2c0
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc90000a47500
RBP: ffffc90000a47650 R08: dffffc0000000000 R09: fffff52000148ea1
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811eb3f030
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88811eb3f030
FS:  0000555555c5e300(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000000 CR3: 000000011ad5a000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 device_attach+0x17/0x20 drivers/base/dd.c:1017
 proc_ioctl+0x428/0x600 drivers/usb/core/devio.c:2344
 usbdev_ioctl+0x3070/0x5e20 drivers/usb/core/devio.c:2795
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0x114/0x190 fs/ioctl.c:860
 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fac62c9a859
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffed4099528 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fac62cde184 RCX: 00007fac62c9a859
RDX: 0000000020000080 RSI: 00000000c0105512 RDI: 0000000000000007
RBP: 00007ffed4099540 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000ffff R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffed409953c R14: 00007ffed4099560 R15: 00007ffed4099550
 </TASK>
Modules linked in:
---[ end trace 93bac0720e8cc2bd ]---
RIP: 0010:__device_attach+0xb4/0x510 drivers/base/dd.c:950
Code: 5c 24 68 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 0d 77 d1 fe 4c 8b 2b 49 8d 9d d0 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 0f 85 c8 03 00 00 0f b6 1b 89 de 83 e6 01 45
RSP: 0018:ffffc90000a47580 EFLAGS: 00010202
RAX: 000000000000001a RBX: 00000000000000d0 RCX: ffff88811ea6e2c0
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc90000a47500
RBP: ffffc90000a47650 R08: dffffc0000000000 R09: fffff52000148ea1
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88811eb3f030
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88811eb3f030
FS:  0000555555c5e300(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fac62cca1f0 CR3: 000000011ad5a000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	5c                   	pop    %rsp
   1:	24 68                	and    $0x68,%al
   3:	48 89 d8             	mov    %rbx,%rax
   6:	48 c1 e8 03          	shr    $0x3,%rax
   a:	42 80 3c 30 00       	cmpb   $0x0,(%rax,%r14,1)
   f:	74 08                	je     0x19
  11:	48 89 df             	mov    %rbx,%rdi
  14:	e8 0d 77 d1 fe       	callq  0xfed17726
  19:	4c 8b 2b             	mov    (%rbx),%r13
  1c:	49 8d 9d d0 00 00 00 	lea    0xd0(%r13),%rbx
  23:	48 89 d8             	mov    %rbx,%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 c8 03 00 00    	jne    0x3ff
  37:	0f b6 1b             	movzbl (%rbx),%ebx
  3a:	89 de                	mov    %ebx,%esi
  3c:	83 e6 01             	and    $0x1,%esi
  3f:	45                   	rex.RB

Crashes (7):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/06/01 06:09 android13-5.15-lts 19c0ed55a470 babc4389 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 general protection fault in __device_attach
2023/01/03 19:30 android13-5.15-lts c73b4619ad86 f0036e18 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 general protection fault in __device_attach
2023/01/03 07:28 android13-5.15-lts c73b4619ad86 ab32d508 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-15 general protection fault in __device_attach
2023/08/17 11:01 android13-5.15-lts 1463976ddc64 74b106b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 general protection fault in __device_attach
2023/06/23 09:50 android13-5.15-lts 565c3abfa129 79782afc .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 general protection fault in __device_attach
2023/04/21 17:28 android13-5.15-lts 7364b7abbafb 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 general protection fault in __device_attach
2023/03/07 07:36 android13-5.15-lts 5448b2fda85f f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 general protection fault in __device_attach
* Struck through repros no longer work on HEAD.