BUG: unable to handle page fault for address: ffffffffffffff6c
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 927c067 P4D 927c067 PUD 927e067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 7001 Comm: syz-executor.3 Not tainted 5.8.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:wait_consider_task+0x62/0x2ed0 kernel/exit.c:1269
Code: 2d 00 48 89 1c 24 48 81 c3 74 04 00 00 48 89 d8 48 c1 e8 03 48 89 44 24 20 42 8a 04 30 84 c0 0f 85 5c 24 00 00 48 89 5c 24 10 <44> 8b 3b bf 10 00 00 00 44 89 fe e8 ae 33 2d 00 41 83 ff 10 0f 84
RSP: 0018:ffffc90004b37ba0 EFLAGS: 00010246
RAX: 1fffffffffffff00 RBX: ffffffffffffff6c RCX: ffff8880529b0080
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90004b37dd8
RBP: 0000000000000000 R08: ffffffff81472c1d R09: ffffffff81474bec
R10: 0000000000000002 R11: ffff8880529b0080 R12: ffffc90004b37dd8
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
FS:  0000000000d7c940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffff6c CR3: 0000000052977000 CR4: 00000000001426f0
DR0: 0001000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 do_wait_thread kernel/exit.c:1378 [inline]
 do_wait+0x2c1/0x690 kernel/exit.c:1449
 kernel_wait4+0x1d1/0x2c0 kernel/exit.c:1621
 __do_sys_wait4 kernel/exit.c:1633 [inline]
 __se_sys_wait4 kernel/exit.c:1629 [inline]
 __x64_sys_wait4+0xc3/0x150 kernel/exit.c:1629
 do_syscall_64+0x73/0xe0 arch/x86/entry/common.c:359
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x4169ca
Code: Bad RIP value.
RSP: 002b:00007fff55ba8498 EFLAGS: 00000246 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 00000000002c5ccd RCX: 00000000004169ca
RDX: 0000000040000001 RSI: 00007fff55ba84d0 RDI: ffffffffffffffff
RBP: 0000000000002b60 R08: 0000000000000001 R09: 0000000000d7c940
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff55ba84d0 R14: 00000000002c5cb9 R15: 00007fff55ba84e0
Modules linked in:
CR2: ffffffffffffff6c
---[ end trace c7377079b48f03d8 ]---
RIP: 0010:wait_consider_task+0x62/0x2ed0 kernel/exit.c:1269
Code: 2d 00 48 89 1c 24 48 81 c3 74 04 00 00 48 89 d8 48 c1 e8 03 48 89 44 24 20 42 8a 04 30 84 c0 0f 85 5c 24 00 00 48 89 5c 24 10 <44> 8b 3b bf 10 00 00 00 44 89 fe e8 ae 33 2d 00 41 83 ff 10 0f 84
RSP: 0018:ffffc90004b37ba0 EFLAGS: 00010246
RAX: 1fffffffffffff00 RBX: ffffffffffffff6c RCX: ffff8880529b0080
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90004b37dd8
RBP: 0000000000000000 R08: ffffffff81472c1d R09: ffffffff81474bec
R10: 0000000000000002 R11: ffff8880529b0080 R12: ffffc90004b37dd8
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
FS:  0000000000d7c940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffff6c CR3: 0000000052977000 CR4: 00000000001426f0
DR0: 0001000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600