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: 0 PID: 8130 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
RIP: 0010:same_thread_group include/linux/sched/signal.h:644 [inline]
RIP: 0010:ptrace_reparented include/linux/ptrace.h:92 [inline]
RIP: 0010:wait_consider_task+0x1dda/0x3910 kernel/exit.c:1365
Code: 03 80 3c 02 00 0f 85 8c 14 00 00 48 8d bb 00 07 00 00 4d 8b ad 00 07 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 59 14 00 00 4c 39 ab 00 07 00 00 0f 94 c3 0f b6
RSP: 0018:ffff888091e4fb00 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0777777007777770 RCX: ffffffff81386d6d
RDX: 00eeeeee00eeefce RSI: ffffffff81388747 RDI: 0777777007777e70
RBP: ffff888091e4fd04 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880b4edd780 R14: ffff888000112640 R15: 0000000040000000
FS:  0000555556e48400(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c1f085e0e8 CR3: 0000000090fd7000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_wait_thread kernel/exit.c:1442 [inline]
 do_wait+0x429/0x9c0 kernel/exit.c:1513
 kernel_wait4+0x14c/0x260 kernel/exit.c:1655
 __do_sys_wait4 kernel/exit.c:1667 [inline]
 __se_sys_wait4+0x149/0x160 kernel/exit.c:1663
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f44db470717
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:00007ffc2b63b790 EFLAGS: 00000293 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 0000000000003ea8 RCX: 00007f44db470717
RDX: 0000000040000001 RSI: 00007ffc2b63b81c RDI: 00000000ffffffff
RBP: 00007ffc2b63b81c R08: 0000000000000000 R09: 00000176d7d71a7a
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032
R13: 0000000000164711 R14: 0000000000000000 R15: 00007ffc2b63b880
Modules linked in:
---[ end trace e070aee228db6b67 ]---
RIP: 0010:same_thread_group include/linux/sched/signal.h:644 [inline]
RIP: 0010:ptrace_reparented include/linux/ptrace.h:92 [inline]
RIP: 0010:wait_consider_task+0x1dda/0x3910 kernel/exit.c:1365
Code: 03 80 3c 02 00 0f 85 8c 14 00 00 48 8d bb 00 07 00 00 4d 8b ad 00 07 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 59 14 00 00 4c 39 ab 00 07 00 00 0f 94 c3 0f b6
RSP: 0018:ffff888091e4fb00 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0777777007777770 RCX: ffffffff81386d6d
RDX: 00eeeeee00eeefce RSI: ffffffff81388747 RDI: 0777777007777e70
RBP: ffff888091e4fd04 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880b4edd780 R14: ffff888000112640 R15: 0000000040000000
FS:  0000555556e48400(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c1f085e0e8 CR3: 0000000090fd7000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	03 80 3c 02 00 0f    	add    0xf00023c(%rax),%eax
   6:	85 8c 14 00 00 48 8d 	test   %ecx,-0x72b80000(%rsp,%rdx,1)
   d:	bb 00 07 00 00       	mov    $0x700,%ebx
  12:	4d 8b ad 00 07 00 00 	mov    0x700(%r13),%r13
  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:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 59 14 00 00    	jne    0x148d
  34:	4c 39 ab 00 07 00 00 	cmp    %r13,0x700(%rbx)
  3b:	0f 94 c3             	sete   %bl
  3e:	0f                   	.byte 0xf
  3f:	b6                   	.byte 0xb6