BUG: unable to handle page fault for address: fffffffffffffc4c
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 987c067 P4D 987c067 PUD 987e067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 6738 Comm: syz-executor.5 Not tainted 5.7.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:mm_update_next_owner+0x44b/0x7a0 kernel/exit.c:384
Code: 90 2d 00 48 8d bd 4c 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 b2 02 00 00 <44> 8b b5 4c fc ff ff 31 ff 41 81 e6 00 00 20 00 44 89 f6 e8 ed 91
RSP: 0018:ffffc90017f47d10 EFLAGS: 00010246
RAX: 0000000000000007 RBX: dffffc0000000000 RCX: ffffffff8145a403
RDX: 0000000000000000 RSI: ffffffff8145a3c4 RDI: fffffffffffffc4c
RBP: 0000000000000000 R08: ffff8880a6d66600 R09: fffffbfff1301219
R10: ffffffff898090c3 R11: fffffbfff1301218 R12: ffff88805d01b680
R13: fffffffffffffc28 R14: ffff88804c1d56c0 R15: ffff8880355b64d0
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: fffffffffffffc4c CR3: 000000021b349000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 exit_mm kernel/exit.c:479 [inline]
 do_exit+0xa49/0x2dd0 kernel/exit.c:783
 do_group_exit+0x125/0x340 kernel/exit.c:894
 __do_sys_exit_group kernel/exit.c:905 [inline]
 __se_sys_exit_group kernel/exit.c:903 [inline]
 __ia32_sys_exit_group+0x3a/0x50 kernel/exit.c:903
 do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline]
 do_fast_syscall_32+0x270/0xe90 arch/x86/entry/common.c:396
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
Modules linked in:
CR2: fffffffffffffc4c
---[ end trace 60cb50f47b9b0e3b ]---
RIP: 0010:mm_update_next_owner+0x44b/0x7a0 kernel/exit.c:384
Code: 90 2d 00 48 8d bd 4c 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 b2 02 00 00 <44> 8b b5 4c fc ff ff 31 ff 41 81 e6 00 00 20 00 44 89 f6 e8 ed 91
RSP: 0018:ffffc90017f47d10 EFLAGS: 00010246
RAX: 0000000000000007 RBX: dffffc0000000000 RCX: ffffffff8145a403
RDX: 0000000000000000 RSI: ffffffff8145a3c4 RDI: fffffffffffffc4c
RBP: 0000000000000000 R08: ffff8880a6d66600 R09: fffffbfff1301219
R10: ffffffff898090c3 R11: fffffbfff1301218 R12: ffff88805d01b680
R13: fffffffffffffc28 R14: ffff88804c1d56c0 R15: ffff8880355b64d0
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: fffffffffffffc4c CR3: 000000021b349000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400