BUG: unable to handle kernel NULL pointer dereference in syscall_trace

Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported
general protection fault in syscall_return_slowpath kernel	syz	inconclusive	done	1	1645d	1732d

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.19	BUG: unable to handle kernel NULL pointer dereference in syscall_trace_enter				2	1545d	1612d	0/1	auto-closed as invalid on 2021/01/09 10:09

BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 0 P4D 0 
Oops: 0002 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 3881 Comm: systemd-udevd Not tainted 5.8.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:syscall_trace_enter+0x27/0x340 arch/x86/entry/common.c:124
Code: 00 00 00 41 56 41 55 41 54 55 53 48 89 fb 48 83 ec 40 65 4c 8b 24 25 00 ff 01 00 41 8b 44 24 08 4d 8b 2c 24 83 e0 02 83 f8 01 <19> 00 00 00 00 00 00 80 81 c5 03 00 00 40 41 f6 c5 41 0f 85 2b 01
RSP: 0018:ffffc90000f77ed0 EFLAGS: 00010297
RAX: 0000000000000000 RBX: ffffc90000f77f58 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90000f77f58
RBP: ffffc90000f77f58 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880a2770380
R13: 0000000000000100 R14: 0000000000000000 R15: 0000000000000000
FS:  00007faeae4538c0(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000a34fa000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_syscall_64+0x9b/0xe0 arch/x86/entry/common.c:355
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7faead2cf469
Code: Bad RIP value.
RSP: 002b:00007ffcf37e8418 EFLAGS: 00000246 ORIG_RAX: 000000000000013e
RAX: ffffffffffffffda RBX: 00005607178c49b0 RCX: 00007faead2cf469
RDX: 0000000000000001 RSI: 0000000000000010 RDI: 00005607178c49b0
RBP: 0000000000000010 R08: 0000000000000018 R09: 000000000000000a
R10: 0000000000000210 R11: 0000000000000246 R12: 00007ffcf37e8500
R13: 0000000000000200 R14: 00005607178c29a0 R15: 0000000000000019
Modules linked in:
CR2: 0000000000000000