kvm: emulating exchange as write
BUG: kernel NULL pointer dereference, address: 0000000000000086
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 1f0e8a067 P4D 1f0e8a067 PUD 1e3b12067 PMD 0 
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 1469 Comm: syz.1.354 Not tainted 5.4.276-syzkaller-00021-g58de09405d1e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:0x86
Code: Bad RIP value.
RSP: 0018:ffff8881d47b7308 EFLAGS: 00010086
RAX: ffff8881d47b7338 RBX: dffffc0000000000 RCX: 0000000000040000
RDX: ffffc90001146000 RSI: 0000000000010600 RDI: 0000000000010601
RBP: 0000000000000220 R08: ffffffff82316961 R09: ffffffff811c8ff5
R10: ffff8881e18b9f80 R11: 0000000000000002 R12: ffffffff84600200
R13: fffffe0000000228 R14: ffff8881eab70000 R15: fffffe000000022b
FS:  00007fc026c496c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000000005c CR3: 00000001e9a22000 CR4: 00000000003426a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
Modules linked in:
CR2: 0000000000000086
---[ end trace ed2d703942701d44 ]---
RIP: 0010:0x86
Code: Bad RIP value.
RSP: 0018:ffff8881d47b7308 EFLAGS: 00010086
RAX: ffff8881d47b7338 RBX: dffffc0000000000 RCX: 0000000000040000
RDX: ffffc90001146000 RSI: 0000000000010600 RDI: 0000000000010601
RBP: 0000000000000220 R08: ffffffff82316961 R09: ffffffff811c8ff5
R10: ffff8881e18b9f80 R11: 0000000000000002 R12: ffffffff84600200
R13: fffffe0000000228 R14: ffff8881eab70000 R15: fffffe000000022b
FS:  00007fc026c496c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000000005c CR3: 00000001e9a22000 CR4: 00000000003426a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400