BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 8b144067 P4D 8b144067 PUD a32fe067 PMD 0 
Oops: 0002 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 21530 Comm: syz-executor.3 Not tainted 5.7.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:do_syscall_64+0xf3/0x1b0 arch/x86/entry/common.c:295
Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 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: 0000:ffffc900063cff28 EFLAGS: 00010296
RAX: 0000000000000000 RBX: ffffffff886003e8 RCX: 3330fd5a8dde0200
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000286
RBP: 0000000000000000 R08: ffffffff81790f40 R09: fffffbfff16f8508
R10: fffffbfff16f8508 R11: 0000000000000000 R12: 0000000000000023
R13: dffffc0000000000 R14: ffffc900063cff58 R15: 0000000000000000
FS:  00000000012e5940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000099bcc000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x45af51
Code: 75 14 b8 23 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 d4 d1 fb ff c3 48 83 ec 08 e8 8a 46 00 00 48 89 04 24 b8 23 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 d3 46 00 00 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007fff1a3700d0 EFLAGS: 00000293 ORIG_RAX: 0000000000000023
RAX: ffffffffffffffda RBX: 0000000000066472 RCX: 000000000045af51
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fff1a3700e0
RBP: 0000000000000001 R08: ffffffff8129c9a5 R09: 00000000de14765c
R10: 00007fff1a3701e0 R11: 0000000000000293 R12: 000000000078bf00
R13: 000000000078c900 R14: ffffffffffffffff R15: 000000000078bfac
Modules linked in:
CR2: 0000000000000000
---[ end trace 039449477bc0efbf ]---
RIP: 0010:do_syscall_64+0xf3/0x1b0 arch/x86/entry/common.c:295
Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 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: 0000:ffffc900063cff28 EFLAGS: 00010296
RAX: 0000000000000000 RBX: ffffffff886003e8 RCX: 3330fd5a8dde0200
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000286
RBP: 0000000000000000 R08: ffffffff81790f40 R09: fffffbfff16f8508
R10: fffffbfff16f8508 R11: 0000000000000000 R12: 0000000000000023
R13: dffffc0000000000 R14: ffffc900063cff58 R15: 0000000000000000
FS:  00000000012e5940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000099bcc000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400