BUG: unable to handle page fault for address: ffffffffffffff6b
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 9a90067 P4D 9a90067 PUD 9a92067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 7030 Comm: syz-executor.2 Not tainted 5.9.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:wait_consider_task+0xa9/0x3b20 kernel/exit.c:1269
Code: 00 00 00 31 c0 e8 77 29 2e 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 40 1d 00 00 <45> 8b a6 74 04 00 00 bf 10 00 00 00 44 89 e6 e8 c3 25 2e 00 41 83
RSP: 0018:ffffc90005eb7c50 EFLAGS: 00010246
RAX: 0000000000000006 RBX: 0000000000000000 RCX: ffffffff81466216
RDX: 0000000000000000 RSI: ffffffff81462409 RDI: ffffc90005eb7e50
RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffffff89a09083
R10: 0000000000000000 R11: 0000000000000000 R12: ffffc90005eb7e50
R13: ffff888094af2240 R14: fffffffffffffaf7 R15: ffffffffffffff6b
FS:  0000000000000000(0000) GS:ffff8880ae700000(0063) knlGS:00000000097d8900
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: ffffffffffffff6b CR3: 0000000094511000 CR4: 00000000001526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_wait_thread kernel/exit.c:1378 [inline]
 do_wait+0x36a/0x9e0 kernel/exit.c:1449
 kernel_wait4+0x14c/0x260 kernel/exit.c:1621
 do_syscall_32_irqs_on arch/x86/entry/common.c:78 [inline]
 __do_fast_syscall_32+0x60/0x90 arch/x86/entry/common.c:137
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:160
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7f3c549
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000090afda4 EFLAGS: 00000216 ORIG_RAX: 0000000000000007
RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 00000000090afe0c
RDX: 0000000040000001 RSI: 0000000000249e61 RDI: 0000000000000000
RBP: 000000000000000a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
CR2: ffffffffffffff6b
---[ end trace b5cb4bf270fe9320 ]---
RIP: 0010:wait_consider_task+0xa9/0x3b20 kernel/exit.c:1269
Code: 00 00 00 31 c0 e8 77 29 2e 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 40 1d 00 00 <45> 8b a6 74 04 00 00 bf 10 00 00 00 44 89 e6 e8 c3 25 2e 00 41 83
RSP: 0018:ffffc90005eb7c50 EFLAGS: 00010246
RAX: 0000000000000006 RBX: 0000000000000000 RCX: ffffffff81466216
RDX: 0000000000000000 RSI: ffffffff81462409 RDI: ffffc90005eb7e50
RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffffff89a09083
R10: 0000000000000000 R11: 0000000000000000 R12: ffffc90005eb7e50
R13: ffff888094af2240 R14: fffffffffffffaf7 R15: ffffffffffffff6b
FS:  0000000000000000(0000) GS:ffff8880ae700000(0063) knlGS:00000000097d8900
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: ffffffffffffff6b CR3: 0000000094511000 CR4: 00000000001526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400