BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 1ca20a067 P4D 1ca20a067 PUD 0 
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 17 Comm: ksoftirqd/1 Tainted: G        W         5.4.292-syzkaller-00021-gcd8e74fa0fa3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f5e2fbd0 EFLAGS: 00010206
RAX: ffffffff8150a590 RBX: 0000000000000100 RCX: ffff8881f5e18000
RDX: 0000000080000100 RSI: 0000000000000000 RDI: ffff8881f23cf1c0
RBP: ffff8881f5e2fc10 R08: 0000000000000004 R09: 0000000000000003
R10: ffffed103ebc5f74 R11: 1ffff1103ebc5f74 R12: 00000000ffffdd40
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881f23cf1c0
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001daecf000 CR4: 00000000003406a0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 call_timer_fn+0x3c/0x380 kernel/time/timer.c:1448
 expire_timers kernel/time/timer.c:1493 [inline]
 __run_timers+0x81d/0xb60 kernel/time/timer.c:1817
 run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1830
 __do_softirq+0x236/0x660 kernel/softirq.c:292
 run_ksoftirqd+0x23/0x30 kernel/softirq.c:603
 smpboot_thread_fn+0x474/0x850 kernel/smpboot.c:165
 kthread+0x31e/0x3a0 kernel/kthread.c:288
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:354
Modules linked in:
CR2: 0000000000000000
---[ end trace 6ead5107a0d96d8f ]---
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f5e2fbd0 EFLAGS: 00010206
RAX: ffffffff8150a590 RBX: 0000000000000100 RCX: ffff8881f5e18000
RDX: 0000000080000100 RSI: 0000000000000000 RDI: ffff8881f23cf1c0
RBP: ffff8881f5e2fc10 R08: 0000000000000004 R09: 0000000000000003
R10: ffffed103ebc5f74 R11: 1ffff1103ebc5f74 R12: 00000000ffffdd40
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881f23cf1c0
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001daecf000 CR4: 00000000003406a0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600