BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0010) - not-present page PGD 1e71dc067 P4D 1e71dc067 PUD 0 Oops: 0010 [#1] PREEMPT SMP KASAN CPU: 1 PID: 658 Comm: syz.0.81 Not tainted 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: 00010202 RAX: ffffffff8150a590 RBX: 0000000000000101 RCX: ffff8881ebbe8000 RDX: 0000000000000101 RSI: 0000000000000000 RDI: ffff8881d37eb1c0 RBP: ffff8881f6f09d30 R08: 0000000000000004 R09: 0000000000000003 R10: ffffed103ede1398 R11: 1ffff1103ede1398 R12: 00000000ffff96f0 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881d37eb1c0 FS: 00007f9ecf62d6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 00000001e7d97000 CR4: 00000000003406a0 DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: <IRQ> 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 </IRQ> RIP: 0010:__fd_install+0x96/0x270 fs/file.c:602 Code: 3c 08 00 74 08 4c 89 e7 e8 17 ea f2 ff 4d 8b 3c 24 49 83 c7 08 4c 89 fb 48 c1 eb 03 48 b8 00 00 00 00 00 fc ff df 80 3c 03 00 <74> 08 4c 89 ff e8 f0 e9 f2 ff 45 89 f6 49 c1 e6 03 4d 8b 27 4d 01 RSP: 0018:ffff8881cf02fcf8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: 1ffff1103cf78581 RCX: dffffc0000000000 RDX: ffffc90000d45000 RSI: 00000000000076d6 RDI: ffffffff819a8eb0 RBP: ffff8881cf02fd28 R08: dffffc0000000000 R09: ffffed103d77d12a R10: ffffed103d77d12a R11: 1ffff1103d77d129 R12: ffff8881e292f0e0 R13: ffff8881e2e0fb00 R14: 000000000000000a R15: ffff8881e7bc2c08 fd_install+0x50/0x60 fs/file.c:609 __do_sys_perf_event_open kernel/events/core.c:11484 [inline] __se_sys_perf_event_open+0x18f2/0x1a90 kernel/events/core.c:11053 __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: 0033:0x7f9ed0fc4969 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:00007f9ecf62d038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f9ed11ebfa0 RCX: 00007f9ed0fc4969 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000700 RBP: 00007f9ed1046ab1 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f9ed11ebfa0 R15: 00007ffde1277f88 Modules linked in: CR2: 0000000000000000 ---[ end trace 2243e339765cd2cb ]--- RIP: 0010:0x0 Code: Bad RIP value. RSP: 0018:ffff8881f6f09cf0 EFLAGS: 00010202 RAX: ffffffff8150a590 RBX: 0000000000000101 RCX: ffff8881ebbe8000 RDX: 0000000000000101 RSI: 0000000000000000 RDI: ffff8881d37eb1c0 RBP: ffff8881f6f09d30 R08: 0000000000000004 R09: 0000000000000003 R10: ffffed103ede1398 R11: 1ffff1103ede1398 R12: 00000000ffff96f0 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881d37eb1c0 FS: 00007f9ecf62d6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 00000001e7d97000 CR4: 00000000003406a0 DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 ---------------- Code disassembly (best guess): 0: 3c 08 cmp $0x8,%al 2: 00 74 08 4c add %dh,0x4c(%rax,%rcx,1) 6: 89 e7 mov %esp,%edi 8: e8 17 ea f2 ff call 0xfff2ea24 d: 4d 8b 3c 24 mov (%r12),%r15 11: 49 83 c7 08 add $0x8,%r15 15: 4c 89 fb mov %r15,%rbx 18: 48 c1 eb 03 shr $0x3,%rbx 1c: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 23: fc ff df 26: 80 3c 03 00 cmpb $0x0,(%rbx,%rax,1) * 2a: 74 08 je 0x34 <-- trapping instruction 2c: 4c 89 ff mov %r15,%rdi 2f: e8 f0 e9 f2 ff call 0xfff2ea24 34: 45 89 f6 mov %r14d,%r14d 37: 49 c1 e6 03 shl $0x3,%r14 3b: 4d 8b 27 mov (%r15),%r12 3e: 4d rex.WRB 3f: 01 .byte 0x1