BUG: unable to handle kernel paging request at ffff8880007908bc
IP: wait_consider_task+0x96/0x3350 kernel/exit.c:1336
PGD b07a067 P4D b07a067 PUD b07b067 PMD 159063 PTE 0
Oops: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 6368 Comm: syz-executor.4 Not tainted 4.14.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88806909c680 task.stack: ffff8880690a0000
RIP: 0010:wait_consider_task+0x96/0x3350 kernel/exit.c:1336
RSP: 0018:ffff8880690a7b40 EFLAGS: 00010246
RAX: 0000000000000007 RBX: ffff888000790440 RCX: 0000000000000ec1
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880690a7d18
RBP: dffffc0000000000 R08: ffffffff8a071f88 R09: 000000000006008f
R10: ffff88806909cf08 R11: ffff88806909c680 R12: ffff8880690a7d18
R13: ffff88806909c680 R14: ffff8880690a7d18 R15: ffff8880007908bc
FS:  00000000022d5940(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8880007908bc CR3: 0000000069072000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_wait_thread kernel/exit.c:1445 [inline]
 do_wait+0x3e9/0x930 kernel/exit.c:1516
 kernel_wait4+0x107/0x1e0 kernel/exit.c:1658
 SYSC_wait4 kernel/exit.c:1670 [inline]
 SyS_wait4+0xfe/0x110 kernel/exit.c:1666
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x41618a
RSP: 002b:00007ffca7c6b668 EFLAGS: 00000246 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 00000000000e0384 RCX: 000000000041618a
RDX: 0000000040000001 RSI: 00007ffca7c6b6a0 RDI: ffffffffffffffff
RBP: 0000000000000f18 R08: 0000000000000001 R09: 00000000022d5940
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 00007ffca7c6b6a0 R14: 00000000000e033b R15: 00007ffca7c6b6b0
Code: 40 08 00 f3 f3 f3 e8 9a c1 24 00 4c 89 f8 48 c1 e8 03 0f b6 14 28 4c 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 d1 17 00 00 <44> 8b a3 7c 04 00 00 41 83 fc 10 0f 84 a1 00 00 00 e8 64 c1 24 
RIP: wait_consider_task+0x96/0x3350 kernel/exit.c:1336 RSP: ffff8880690a7b40
CR2: ffff8880007908bc
---[ end trace f529f5ba8c58c9c1 ]---