BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0010) - not-present page PGD 1e72f8067 P4D 1e72f8067 PUD 0 Oops: 0010 [#1] PREEMPT SMP KASAN CPU: 1 PID: 6820 Comm: syz.5.1816 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:ffff8881f6f09cf0 EFLAGS: 00010206 RAX: ffffffff8150a590 RBX: 0000000000000100 RCX: ffff8881eb292f40 RDX: 0000000080000100 RSI: 0000000000000000 RDI: ffff8881e3db31c0 RBP: ffff8881f6f09d30 R08: 0000000000000004 R09: 0000000000000003 R10: ffffed103ede1398 R11: 1ffff1103ede1398 R12: 00000000ffffd250 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881e3db31c0 FS: 00007f2da5fd06c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 00000001dc382000 CR4: 00000000003406a0 DR0: 0000000000000000 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 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x197/0x1c0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:539 [inline] smp_apic_timer_interrupt+0x11d/0x490 arch/x86/kernel/apic/apic.c:1161 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834 RIP: 0010:__do_sys_perf_event_open kernel/events/core.c:11161 [inline] RIP: 0010:__se_sys_perf_event_open+0x5a0/0x1a90 kernel/events/core.c:11053 Code: 49 83 fd 01 19 c0 44 09 f0 48 8d bc 24 80 00 00 00 48 8b 74 24 18 31 d2 45 31 c0 45 31 c9 50 6a 00 e8 04 1c 00 00 48 83 c4 10 <49> 89 c5 48 3d 00 f0 ff ff 76 34 e8 a0 eb e9 ff 44 8b 74 24 38 e9 RSP: 0018:ffff8881de1c7d60 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: ffff8881c5484000 RBX: 0000000000000001 RCX: 0000000000080000 RDX: ffffc900001db000 RSI: 0000000000003edc RDI: 0000000000003edd RBP: ffff8881de1c7ed0 R08: 0000000059e27312 R09: 0000000011d88e9d R10: 00000000ae040c2d R11: 0000000023cf447d R12: 1ffff1103bc38fb8 R13: 0000000000000000 R14: ffffffffffffffff R15: dffffc0000000000 __x64_sys_perf_event_open+0xbf/0xd0 kernel/events/core.c:11053 do_syscall_64+0xcf/0x170 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x5c/0xc1 RIP: 0033:0x7f2da7967969 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2da5fd0038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f2da7b8efa0 RCX: 00007f2da7967969 RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000200000000000 RBP: 00007f2da79e9ab1 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f2da7b8efa0 R15: 00007ffe176f0cc8 Modules linked in: CR2: 0000000000000000 ---[ end trace cc399fddee9319f1 ]--- RIP: 0010:0x0 Code: Bad RIP value. RSP: 0018:ffff8881f6f09cf0 EFLAGS: 00010206 RAX: ffffffff8150a590 RBX: 0000000000000100 RCX: ffff8881eb292f40 RDX: 0000000080000100 RSI: 0000000000000000 RDI: ffff8881e3db31c0 RBP: ffff8881f6f09d30 R08: 0000000000000004 R09: 0000000000000003 R10: ffffed103ede1398 R11: 1ffff1103ede1398 R12: 00000000ffffd250 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881e3db31c0 FS: 00007f2da5fd06c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 00000001dc382000 CR4: 00000000003406a0 DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 ---------------- Code disassembly (best guess): 0: 49 83 fd 01 cmp $0x1,%r13 4: 19 c0 sbb %eax,%eax 6: 44 09 f0 or %r14d,%eax 9: 48 8d bc 24 80 00 00 lea 0x80(%rsp),%rdi 10: 00 11: 48 8b 74 24 18 mov 0x18(%rsp),%rsi 16: 31 d2 xor %edx,%edx 18: 45 31 c0 xor %r8d,%r8d 1b: 45 31 c9 xor %r9d,%r9d 1e: 50 push %rax 1f: 6a 00 push $0x0 21: e8 04 1c 00 00 call 0x1c2a 26: 48 83 c4 10 add $0x10,%rsp * 2a: 49 89 c5 mov %rax,%r13 <-- trapping instruction 2d: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 33: 76 34 jbe 0x69 35: e8 a0 eb e9 ff call 0xffe9ebda 3a: 44 8b 74 24 38 mov 0x38(%rsp),%r14d 3f: e9 .byte 0xe9