syzbot


BUG: unable to handle kernel paging request in wait_consider_task (3)
Status: auto-closed as invalid on 2022/03/03 21:46
Reported-by: syzbot+338d77cdbb8fca71ffe1@syzkaller.appspotmail.com
First crash: 302d, last: 173d
similar bugs (7):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 BUG: unable to handle kernel paging request in wait_consider_task 21 640d 868d 0/1 auto-closed as invalid on 2020/12/21 09:51
upstream BUG: unable to handle kernel paging request in wait_consider_task (2) 20 555d 604d 0/22 auto-closed as invalid on 2021/03/16 11:24
linux-4.19 BUG: unable to handle kernel paging request in wait_consider_task (2) 2 319d 357d 0/1 auto-closed as invalid on 2021/11/08 02:07
linux-4.19 BUG: unable to handle kernel paging request in wait_consider_task (3) 1 147d 147d 0/1 auto-closed as invalid on 2022/04/28 14:50
linux-4.19 BUG: unable to handle kernel paging request in wait_consider_task 14 538d 773d 0/1 auto-closed as invalid on 2021/04/02 04:29
upstream BUG: unable to handle kernel paging request in wait_consider_task 1 999d 995d 0/22 auto-closed as invalid on 2019/11/28 20:23
linux-4.14 BUG: unable to handle kernel paging request in wait_consider_task (2) 1 388d 388d 0/1 auto-closed as invalid on 2021/08/30 22:57

Sample crash report:
BUG: unable to handle page fault for address: ffffffffffffff64
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD b88f067 P4D b88f067 PUD b891067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 6570 Comm: syz-executor.3 Not tainted 5.16.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:wait_consider_task+0xae/0x3b80 kernel/exit.c:1295
Code: 8f 5c 05 00 00 48 89 c8 48 89 4c 24 10 48 c1 e8 03 0f b6 14 28 48 89 c8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 c2 1a 00 00 <45> 8b a7 5c 05 00 00 bf 10 00 00 00 44 89 e6 e8 be ae 31 00 41 83
RSP: 0018:ffffc90002a4fb60 EFLAGS: 00010246
RAX: 0000000000000007 RBX: 0000000000000000 RCX: ffffffffffffff64
RDX: 0000000000000000 RSI: ffffffff8145fde2 RDI: ffffc90002a4fd18
RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff8b80a083
R10: ffffffff81463fb6 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff88801c763a00 R14: 0000000000000000 R15: fffffffffffffa08
FS:  0000555556289400(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffff64 CR3: 00000000447a7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 00000000b8fecd19 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_wait_thread kernel/exit.c:1404 [inline]
 do_wait+0x6ca/0xce0 kernel/exit.c:1521
 kernel_wait4+0x14c/0x260 kernel/exit.c:1684
 __do_sys_wait4+0x13f/0x150 kernel/exit.c:1712
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fa02d401fb7
Code: 89 7c 24 10 48 89 4c 24 18 e8 35 50 02 00 4c 8b 54 24 18 8b 54 24 14 41 89 c0 48 8b 74 24 08 8b 7c 24 10 b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 89 44 24 10 e8 65 50 02 00 8b 44
RSP: 002b:00007fa02da4ad50 EFLAGS: 00000293 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 0000000000002a5a RCX: 00007fa02d401fb7
RDX: 0000000040000001 RSI: 00007fa02da4addc RDI: 00000000ffffffff
RBP: 00007fa02da4addc R08: 0000000000000000 R09: 00007ffcf51d1080
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032
R13: 000000000031c2fb R14: 0000000000000000 R15: 00007fa02da4ae40
 </TASK>
Modules linked in:
CR2: ffffffffffffff64
---[ end trace 10246ccf24150519 ]---
RIP: 0010:wait_consider_task+0xae/0x3b80 kernel/exit.c:1295
Code: 8f 5c 05 00 00 48 89 c8 48 89 4c 24 10 48 c1 e8 03 0f b6 14 28 48 89 c8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 c2 1a 00 00 <45> 8b a7 5c 05 00 00 bf 10 00 00 00 44 89 e6 e8 be ae 31 00 41 83
RSP: 0018:ffffc90002a4fb60 EFLAGS: 00010246
RAX: 0000000000000007 RBX: 0000000000000000 RCX: ffffffffffffff64
RDX: 0000000000000000 RSI: ffffffff8145fde2 RDI: ffffc90002a4fd18
RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff8b80a083
R10: ffffffff81463fb6 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff88801c763a00 R14: 0000000000000000 R15: fffffffffffffa08
FS:  0000555556289400(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffff64 CR3: 00000000447a7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 00000000b8fecd19 DR6: 00000000ffff0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	5c                   	pop    %rsp
   1:	05 00 00 48 89       	add    $0x89480000,%eax
   6:	c8 48 89 4c          	enterq $0x8948,$0x4c
   a:	24 10                	and    $0x10,%al
   c:	48 c1 e8 03          	shr    $0x3,%rax
  10:	0f b6 14 28          	movzbl (%rax,%rbp,1),%edx
  14:	48 89 c8             	mov    %rcx,%rax
  17:	83 e0 07             	and    $0x7,%eax
  1a:	83 c0 03             	add    $0x3,%eax
  1d:	38 d0                	cmp    %dl,%al
  1f:	7c 08                	jl     0x29
  21:	84 d2                	test   %dl,%dl
  23:	0f 85 c2 1a 00 00    	jne    0x1aeb
* 29:	45 8b a7 5c 05 00 00 	mov    0x55c(%r15),%r12d <-- trapping instruction
  30:	bf 10 00 00 00       	mov    $0x10,%edi
  35:	44 89 e6             	mov    %r12d,%esi
  38:	e8 be ae 31 00       	callq  0x31aefb
  3d:	41                   	rex.B
  3e:	83                   	.byte 0x83

Crashes (4):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce 2021/12/03 21:45 upstream 5f58da2befa5 c7c20675 .config log report info BUG: unable to handle kernel paging request in wait_consider_task
ci-upstream-kasan-gce-root 2021/11/01 17:38 upstream 8bb7eca972ad 098b5d53 .config log report info BUG: unable to handle kernel paging request in wait_consider_task
ci-upstream-kasan-gce-selinux-root 2021/09/12 12:17 upstream 78e709522d2c 5ae8508a .config log report info BUG: unable to handle kernel paging request in wait_consider_task
ci-upstream-kasan-gce-root 2021/07/27 07:00 upstream ff1176468d36 fd511809 .config log report info BUG: unable to handle kernel paging request in wait_consider_task