BUG: kernel NULL pointer dereference, address: 0000000000000286
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD a1603067 P4D a1603067 PUD 24231067 PMD 0 
Oops: 0002 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 6599 Comm: syz-executor.0 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 77 07 c3 91 00 00 10 75 58 48 83 3d 05 60 b4 08 00 0f
RSP: 0018:ffffc90004917f18 EFLAGS: 00010286
RAX: 0000000000000286 RBX: 0000000000004000 RCX: 0000000000000000
RDX: ffff888051bcc580 RSI: ffffffff816435bd RDI: ffffc90004917f58
RBP: ffffc90004917f58 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000002a5b940(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000286 CR3: 00000000150d3000 CR4: 00000000001426e0
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: 0033:0x45a721
Code: Bad RIP value.
RSP: 002b:0000000000c9fbc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000023
RAX: 0000000000000000 RBX: 000000000010fa1d RCX: 000000000045a721
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000c9fbd0
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000c9fcd0 R11: 0000000000000293 R12: 000000000078bf00
R13: 000000000078c900 R14: ffffffffffffffff R15: 000000000078bf0c
Modules linked in:
CR2: 0000000000000286
---[ end trace 7ec8c1dbd0919977 ]---
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 77 07 c3 91 00 00 10 75 58 48 83 3d 05 60 b4 08 00 0f
RSP: 0018:ffffc90004917f18 EFLAGS: 00010286
RAX: 0000000000000286 RBX: 0000000000004000 RCX: 0000000000000000
RDX: ffff888051bcc580 RSI: ffffffff816435bd RDI: ffffc90004917f58
RBP: ffffc90004917f58 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000002a5b940(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000286 CR3: 00000000150d3000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400