syzbot


general protection fault in rose_transmit_link

Status: auto-closed as invalid on 2022/05/29 13:41
Reported-by: syzbot+6aba34b9ad24e58f6552@syzkaller.appspotmail.com
First crash: 758d, last: 758d
Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream general protection fault in rose_transmit_link (3) hams 26 67d 606d 0/26 upstream: reported on 2022/06/30 07:15
upstream general protection fault in rose_transmit_link (2) hams 3 736d 754d 0/26 auto-closed as invalid on 2022/05/21 05:59
upstream general protection fault in rose_transmit_link hams 1 1666d 1662d 0/26 auto-closed as invalid on 2019/11/03 18:16

Sample crash report:
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 19038 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:rose_transmit_link+0x2e/0x560 net/rose/rose_link.c:266
Code: 41 55 41 54 49 89 fc 55 48 89 f5 53 48 83 ec 08 e8 37 3e 30 fa 48 8d 7d 32 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 48 04 00 00
RSP: 0018:ffff8880301bfa10 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff888096470d1a RCX: ffffffff8732c6eb
RDX: 0000000000000006 RSI: ffffffff87324739 RDI: 0000000000000032
RBP: 0000000000000000 R08: 0000000000000001 R09: 000000000000001f
R10: 0000000000000005 R11: 0000000000000000 R12: ffff888047d6d640
R13: 0000000000000010 R14: 0000000000000013 R15: ffff88804705a980
FS:  00007f51b5469700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562408995250 CR3: 000000004e232000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 rose_write_internal+0x272/0x17e0 net/rose/rose_subr.c:201
 rose_release+0x146/0x3b0 net/rose/af_rose.c:636
 __sock_release+0xcd/0x2a0 net/socket.c:599
 sock_close+0x15/0x20 net/socket.c:1214
 __fput+0x2ce/0x890 fs/file_table.c:278
 task_work_run+0x148/0x1c0 kernel/task_work.c:113
 get_signal+0x1b64/0x1f70 kernel/signal.c:2400
 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799
 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f51b6af4059
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f51b5469168 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: 0000000000000000 RBX: 00007f51b6c06f60 RCX: 00007f51b6af4059
RDX: 0000000000000040 RSI: 0000000020000080 RDI: 0000000000000004
RBP: 00007f51b6b4e08d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdc50e422f R14: 00007f51b5469300 R15: 0000000000022000
Modules linked in:
---[ end trace 4e5ba9d554913f07 ]---
RIP: 0010:rose_transmit_link+0x2e/0x560 net/rose/rose_link.c:266
Code: 41 55 41 54 49 89 fc 55 48 89 f5 53 48 83 ec 08 e8 37 3e 30 fa 48 8d 7d 32 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 48 04 00 00
RSP: 0018:ffff8880301bfa10 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff888096470d1a RCX: ffffffff8732c6eb
RDX: 0000000000000006 RSI: ffffffff87324739 RDI: 0000000000000032
RBP: 0000000000000000 R08: 0000000000000001 R09: 000000000000001f
R10: 0000000000000005 R11: 0000000000000000 R12: ffff888047d6d640
R13: 0000000000000010 R14: 0000000000000013 R15: ffff88804705a980
FS:  00007f51b5469700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562408995250 CR3: 000000004e232000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	41 55                	push   %r13
   2:	41 54                	push   %r12
   4:	49 89 fc             	mov    %rdi,%r12
   7:	55                   	push   %rbp
   8:	48 89 f5             	mov    %rsi,%rbp
   b:	53                   	push   %rbx
   c:	48 83 ec 08          	sub    $0x8,%rsp
  10:	e8 37 3e 30 fa       	callq  0xfa303e4c
  15:	48 8d 7d 32          	lea    0x32(%rbp),%rdi
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	0f b6 04 02          	movzbl (%rdx,%rax,1),%eax <-- trapping instruction
  2e:	48 89 fa             	mov    %rdi,%rdx
  31:	83 e2 07             	and    $0x7,%edx
  34:	38 d0                	cmp    %dl,%al
  36:	7f 08                	jg     0x40
  38:	84 c0                	test   %al,%al
  3a:	0f 85 48 04 00 00    	jne    0x488

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/01/29 13:40 linux-4.19.y 3f8a27f9e27b 495e00c5 .config console log report info ci2-linux-4-19 general protection fault in rose_transmit_link
* Struck through repros no longer work on HEAD.