BUG: unable to handle kernel paging request at fffffffffffffe98
IP: mm_update_next_owner+0x3e5/0x5b0 kernel/exit.c:452
PGD 8e6b067 P4D 8e6b067 PUD 8e6d067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 4709 Comm: syz-executor.2 Not tainted 4.14.232-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff888075b923c0 task.stack: ffff888213c48000
RIP: 0010:mm_update_next_owner+0x3e5/0x5b0 kernel/exit.c:452
RSP: 0018:ffff888213c4fd48 EFLAGS: 00010246
RAX: 1fffffffffffffd3 RBX: dffffc0000000000 RCX: 0000000000001872
RDX: 0000000000000000 RSI: 0000000000000100 RDI: ffff8880001309d8
RBP: fffffffffffffa68 R08: fffffffffffffe98 R09: 000000000006008a
R10: ffff888075b92c48 R11: ffff888075b923c0 R12: ffff888094390c80
R13: ffff888096834710 R14: ffff888075b923c0 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffe98 CR3: 0000000210dd0000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 exit_mm kernel/exit.c:547 [inline]
 do_exit+0x97c/0x2850 kernel/exit.c:855
 do_group_exit+0x100/0x2e0 kernel/exit.c:965
 SYSC_exit_group kernel/exit.c:976 [inline]
 SyS_exit_group+0x19/0x20 kernel/exit.c:974
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x4665f9
RSP: 002b:00007ffd956c15e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00000000004665f9
RDX: 000000000041940b RSI: ffffffffffffffbc RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffd956c16e0
Code: a8 68 fa ff ff 49 39 c5 0f 84 f7 fe ff ff e8 03 72 23 00 4c 8d 85 30 04 00 00 4c 89 c0 48 c1 e8 03 80 3c 18 00 0f 85 df 00 00 00 <4c> 8b bd 30 04 00 00 4d 39 e7 75 95 e9 55 fd ff ff e8 d5 71 23 
RIP: mm_update_next_owner+0x3e5/0x5b0 kernel/exit.c:452 RSP: ffff888213c4fd48
CR2: fffffffffffffe98
---[ end trace cfad339d8f401a56 ]---