BUG: kernel NULL pointer dereference, address: 0000000000000286
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD a3001067 P4D a3001067 PUD 9265b067 PMD 0 
Oops: 0002 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 6836 Comm: syz-executor220 Not tainted 5.8.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__syscall_return_slowpath+0x26/0x280 arch/x86/entry/common.c:339
Code: 0b 0f 1f 00 41 55 65 48 8b 04 25 00 ff 01 00 41 54 55 53 48 83 3d 19 60 b4 08 00 48 8b 18 74 3f 48 89 fd 9c 58 0f 1f 44 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
RSP: 0018:ffffc900016a7f18 EFLAGS: 00010286
RAX: 0000000000000286 RBX: 0000000000000000 RCX: ffffffff81c2acc4
RDX: ffff888095b2e540 RSI: ffffffff81c2ad0f RDI: ffffc900016a7f58
RBP: ffffc900016a7f58 R08: 0000000000000001 R09: ffff888095b2ee08
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fc912a8b700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000286 CR3: 0000000090b85000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_syscall_64+0x6c/0xe0 arch/x86/entry/common.c:393
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x446ac9
Code: Bad RIP value.
RSP: 002b:00007fc912a8adb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: fffffffffffffff7 RBX: 00000000006dbc28 RCX: 0000000000446ac9
RDX: 0000000020000580 RSI: 0000000000004b61 RDI: ffffffffffffffff
RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c
R13: 00007ffcf9002a1f R14: 00007fc912a8b9c0 R15: 000000000000002d
Modules linked in:
CR2: 0000000000000286
---[ end trace 439ded3ebb8de856 ]---
RIP: 0010:__syscall_return_slowpath+0x26/0x280 arch/x86/entry/common.c:339
Code: 0b 0f 1f 00 41 55 65 48 8b 04 25 00 ff 01 00 41 54 55 53 48 83 3d 19 60 b4 08 00 48 8b 18 74 3f 48 89 fd 9c 58 0f 1f 44 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
RSP: 0018:ffffc900016a7f18 EFLAGS: 00010286
RAX: 0000000000000286 RBX: 0000000000000000 RCX: ffffffff81c2acc4
RDX: ffff888095b2e540 RSI: ffffffff81c2ad0f RDI: ffffc900016a7f58
RBP: ffffc900016a7f58 R08: 0000000000000001 R09: ffff888095b2ee08
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fc912a8b700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000286 CR3: 0000000090b85000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400