RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045dfb7
RDX: 0000000000000004 RSI: 0000000000004c00 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000020000260 R09: 0000000000000000
R10: 000000000003fc00 R11: 0000000000000246 R12: 0000000000000004
R13: 0000000000000004 R14: 0000000000000004 R15: 0000000020000270
BUG: unable to handle kernel paging request at fffffffffffffc54
sd 0:0:1:0: [sg0] tag#4766 CDB[00]: fa 62 91 38 ef e4 5d 93 93 52 91 33 cf 3e a5 7b
PGD 9e6e067 P4D 9e6e067 PUD 9e70067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 29499 Comm: syz-executor.2 Not tainted 4.19.163-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:mm_update_next_owner+0x376/0x650 kernel/exit.c:450
Code: 00 2b 00 48 8d bd 54 fc ff ff 48 89 f8 48 c1 e8 03 0f b6 14 18 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 26 02 00 00 <44> 8b ad 54 fc ff ff 31 ff 41 81 e5 00 00 20 00 44 89 ee e8 32 01
RSP: 0018:ffff888216da7d48 EFLAGS: 00010246
RAX: 0000000000000007 RBX: dffffc0000000000 RCX: ffffffff8139d04e
RDX: 0000000000000000 RSI: ffffffff8139d00f RDI: fffffffffffffc54
RBP: 0000000000000000 R08: ffff8880001105a0 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff888058f09380
R13: ffff88808f961810 R14: ffff888019c06000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffc54 CR3: 000000004884f000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 exit_mm kernel/exit.c:548 [inline]
 do_exit+0xae8/0x2be0 kernel/exit.c:877
sd 0:0:1:0: [sg0] tag#4766 CDB[10]: 8a 55 cd d7 1c 75 bb b0 98 e8 f4 31 b9 c2 3b ae
 do_group_exit+0x125/0x310 kernel/exit.c:993
 __do_sys_exit_group kernel/exit.c:1004 [inline]
 __se_sys_exit_group kernel/exit.c:1002 [inline]
 __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:1002
sd 0:0:1:0: [sg0] tag#4766 CDB[20]: 65
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45e149
Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fff192e17e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 000000000045e149
RDX: 0000000000417aa1 RSI: fffffffffffffff7 RDI: 0000000000000000
RBP: 0000000000000000 R08: 00000000622ee733 R09: 00007fff192e1840
R10: 000000000000072f R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff192e1840 R14: 00007fff192e1850 R15: 0000000000000001
Modules linked in:
CR2: fffffffffffffc54
---[ end trace 91618e9a7b9fce83 ]---
RIP: 0010:mm_update_next_owner+0x376/0x650 kernel/exit.c:450
Code: 00 2b 00 48 8d bd 54 fc ff ff 48 89 f8 48 c1 e8 03 0f b6 14 18 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 26 02 00 00 <44> 8b ad 54 fc ff ff 31 ff 41 81 e5 00 00 20 00 44 89 ee e8 32 01
RSP: 0018:ffff888216da7d48 EFLAGS: 00010246
RAX: 0000000000000007 RBX: dffffc0000000000 RCX: ffffffff8139d04e
RDX: 0000000000000000 RSI: ffffffff8139d00f RDI: fffffffffffffc54
RBP: 0000000000000000 R08: ffff8880001105a0 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff888058f09380
R13: ffff88808f961810 R14: ffff888019c06000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffc54 CR3: 000000004884f000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400