BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
PGD 3a26b067 P4D 3a26b067 PUD 3a0bb067 PMD 0 
Oops: 0002 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 15037 Comm: syz-executor.4 Not tainted 4.19.107-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:do_syscall_64+0x107/0x620 arch/x86/entry/common.c:293
Code: 87 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 c3 04 00 00 48 89 ef ff 14 dd 40 46 60 87 48 8d 7d 50 48 ba 00 00 00 00 00 fc ff df <48> 00 00 00 00 e9 03 80 3c 11 00 0f 85 be 04 00 00 48 89 45 50 e8
RSP: 0018:ffff888201b2ff28 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000023 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffffff8159526e RDI: ffff888201b2ffa8
RBP: ffff888201b2ff58 R08: ffff888089e78600 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000010000000
R13: ffffffff88b25698 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000001f49940(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000079c07000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000005 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45a941
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 ea 46 00 00 48 89 04 24 b8 23 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 33 47 00 00 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007ffdc2ae5850 EFLAGS: 00000293 ORIG_RAX: 0000000000000023
RAX: ffffffffffffffda RBX: 00000000001741d0 RCX: 000000000045a941
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007ffdc2ae5860
RBP: 0000000000000001 R08: 00ffffffffffffff R09: 00ffffffffffffff
R10: 00007ffdc2ae5950 R11: 0000000000000293 R12: 000000000076bf20
R13: 000000000076c920 R14: 0000000000173f01 R15: 000000000076bf2c
Modules linked in:
CR2: 0000000000000000
BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
PGD 94dcb067 P4D 94dcb067 
---[ end trace 0d277953bda9435e ]---
PUD 4e749067 
RIP: 0010:do_syscall_64+0x107/0x620 arch/x86/entry/common.c:293
PMD 0 
Code: 87 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 c3 04 00 00 48 89 ef ff 14 dd 40 46 60 87 48 8d 7d 50 48 ba 00 00 00 00 00 fc ff df <48> 00 00 00 00 e9 03 80 3c 11 00 0f 85 be 04 00 00 48 89 45 50 e8
RSP: 0018:ffff888201b2ff28 EFLAGS: 00010282
Oops: 0002 [#2] PREEMPT SMP KASAN
RAX: 0000000000000000 RBX: 0000000000000023 RCX: 0000000000000000
CPU: 0 PID: 15114 Comm: syz-executor.2 Tainted: G      D           4.19.107-syzkaller #0
RDX: dffffc0000000000 RSI: ffffffff8159526e RDI: ffff888201b2ffa8
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RBP: ffff888201b2ff58 R08: ffff888089e78600 R09: 0000000000000000
RIP: 0010:do_syscall_64+0x107/0x620 arch/x86/entry/common.c:293
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000010000000
Code: 87 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 c3 04 00 00 48 89 ef ff 14 dd 40 46 60 87 48 8d 7d 50 48 ba 00 00 00 00 00 fc ff df <48> 00 00 00 00 e9 03 80 3c 11 00 0f 85 be 04 00 00 48 89 45 50 e8
R13: ffffffff88b25698 R14: 0000000000000000 R15: 0000000000000000
RSP: 0018:ffff88820196ff28 EFLAGS: 00010296
FS:  0000000001f49940(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
RAX: 0000000000000000 RBX: 0000000000000058 RCX: 0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
RDX: dffffc0000000000 RSI: ffffffff81ab1604 RDI: ffff88820196ffa8
CR2: 0000000000000000 CR3: 0000000079c07000 CR4: 00000000001426e0
RBP: ffff88820196ff58 R08: ffff8880492a8600 R09: 000000006533e9e7
DR0: 0000000000000000 DR1: 0000000000000005 DR2: 0000000000000000
R10: 00000000f49c88d5 R11: 0000000000000000 R12: 0000000010000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
R13: ffffffff88b25698 R14: 0000000000000000 R15: 0000000000000000