BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 8cc65067 P4D 8cc65067 PUD 8cc66067 PMD 0 
Oops: 0002 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 7078 Comm: syz-executor.0 Not tainted 5.7.0-rc1-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: 0018:ffffc90002ce7f28 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffffffff88600568 RCX: ffff888085a64600
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff81be6260 R09: fffffbfff12d7735
R10: fffffbfff12d7735 R11: 0000000000000000 R12: 0000000000000053
R13: dffffc0000000000 R14: ffffc90002ce7f58 R15: 0000000000000000
FS:  00000000023ee940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000008cc64000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x45bca7
Code: 1f 40 00 b8 5a 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffd955ba228 EFLAGS: 00000206 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00000000000d4f84 RCX: 000000000045bca7
RDX: 00007ffd955ba276 RSI: 00000000000001ff RDI: 00007ffd955ba270
RBP: 0000000000000e5f R08: 0000000000000000 R09: 0000000000000006
R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003
R13: 00007ffd955ba260 R14: 00000000000d4f3f R15: 00007ffd955ba270
Modules linked in:
CR2: 0000000000000000