BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 984f9067 P4D 984f9067 PUD a724e067 PMD 0 
Oops: 0002 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 17092 Comm: syz-executor.5 Not tainted 5.6.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/paravirt.h:757 [inline]
RIP: 0010:syscall_return_slowpath arch/x86/entry/common.c:277 [inline]
RIP: 0010:do_syscall_32_irqs_on arch/x86/entry/common.c:352 [inline]
RIP: 0010:do_fast_syscall_32+0x34c/0xe16 arch/x86/entry/common.c:408
Code: 07 00 00 e8 56 df 74 00 41 89 de 31 ff 41 81 e6 91 00 00 10 44 89 f6 e8 c2 e0 74 00 45 85 f6 0f 85 4b 08 00 00 e8 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 fc ff df 48 c1 e8 03 80
RSP: 0018:ffffc90003637f08 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000020024000 RCX: ffffffff8100b80e
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: ffffc90003637f48 R08: ffff8880a820c5c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffc90003637f58
R13: 00000000f7fcfe39 R14: 0000000000000000 R15: ffffc90003637fd8
FS:  0000000000000000(0000) GS:ffff8880ae900000(0063) knlGS:0000000009955900
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000973d2000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7fcfe39
Code: 1d 00 00 00 89 d3 5b 5e 5d c3 8b 04 24 c3 8b 1c 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:000000000868fbb8 EFLAGS: 00000212 ORIG_RAX: 00000000000000a2
RAX: 0000000000000000 RBX: 000000000868fbe8 RCX: 0000000000000000
RDX: 000000000817b640 RSI: 000000000817af80 RDI: 00000000000772ec
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
CR2: 0000000000000000
---[ end trace 6664821a265c65f1 ]---
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/paravirt.h:757 [inline]
RIP: 0010:syscall_return_slowpath arch/x86/entry/common.c:277 [inline]
RIP: 0010:do_syscall_32_irqs_on arch/x86/entry/common.c:352 [inline]
RIP: 0010:do_fast_syscall_32+0x34c/0xe16 arch/x86/entry/common.c:408
Code: 07 00 00 e8 56 df 74 00 41 89 de 31 ff 41 81 e6 91 00 00 10 44 89 f6 e8 c2 e0 74 00 45 85 f6 0f 85 4b 08 00 00 e8 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 fc ff df 48 c1 e8 03 80
RSP: 0018:ffffc90003637f08 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000020024000 RCX: ffffffff8100b80e
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: ffffc90003637f48 R08: ffff8880a820c5c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffc90003637f58
R13: 00000000f7fcfe39 R14: 0000000000000000 R15: ffffc90003637fd8
FS:  0000000000000000(0000) GS:ffff8880ae900000(0063) knlGS:0000000009955900
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000973d2000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400