BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0010) - not-present page PGD 1e4902067 P4D 1e4902067 PUD 0 Oops: 0010 [#1] PREEMPT SMP KASAN CPU: 0 PID: 2340 Comm: syz.2.524 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:ffff8881f6e09cf0 EFLAGS: 00010206 RAX: ffffffff8150a590 RBX: 0000000000000100 RCX: ffff8881e222de80 RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff8881de6cb1c0 RBP: ffff8881f6e09d30 R08: 0000000000000004 R09: 0000000000000003 R10: ffffed103edc1398 R11: 1ffff1103edc1398 R12: 00000000ffffa950 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881de6cb1c0 FS: 00007f54527e16c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 00000001d4c40000 CR4: 00000000003406b0 DR0: 0000000000000000 DR1: 0000000000000000 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:find_stack lib/stackdepot.c:183 [inline] RIP: 0010:stack_depot_save+0x14b/0x4c0 lib/stackdepot.c:245 Code: e6 c1 c6 04 29 f1 41 31 cb c1 c1 0e 41 29 cb 45 31 dc 41 c1 c3 18 45 29 dc 44 89 e3 81 e3 ff ff 0f 00 4c 8b 2c dd 80 18 5c 86 <4d> 85 ed 74 59 44 89 ff eb 09 4d 8b 6d 00 4d 85 ed 74 4b 45 39 65 RSP: 0018:ffff8881eb3d7780 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000084c5e RCX: 0000000070b5d1fe RDX: 0000000000000dc0 RSI: 00000000385ed278 RDI: 0000000000000003 RBP: ffff8881eb3d77d0 R08: 00000000f49c5d08 R09: 000000003a83f71b R10: 000000006811e142 R11: 00000000771ed2f2 R12: 0000000026384c5e R13: ffff8881eb9645c0 R14: ffff8881eb3d7800 R15: 000000000000000c save_stack mm/kasan/common.c:72 [inline] set_track mm/kasan/common.c:78 [inline] __kasan_kmalloc+0x1c3/0x200 mm/kasan/common.c:529 kasan_kmalloc+0xd/0x20 mm/kasan/common.c:543 __kmalloc+0x12a/0x2f0 mm/slub.c:3913 __kmalloc_node include/linux/slab.h:422 [inline] kmalloc_node include/linux/slab.h:599 [inline] __vmalloc_area_node mm/vmalloc.c:2419 [inline] __vmalloc_node_range+0x2af/0x6e0 mm/vmalloc.c:2499 __vmalloc_node mm/vmalloc.c:2554 [inline] __vmalloc+0x45/0x50 mm/vmalloc.c:2560 bpf_prog_alloc_no_stats+0x73/0x230 kernel/bpf/core.c:88 bpf_prog_alloc+0x21/0x1f0 kernel/bpf/core.c:114 bpf_prog_load+0x5f4/0xe10 kernel/bpf/syscall.c:1678 __do_sys_bpf kernel/bpf/syscall.c:2891 [inline] __se_sys_bpf+0x435/0x570 kernel/bpf/syscall.c:2849 __x64_sys_bpf+0x7b/0x90 kernel/bpf/syscall.c:2849 do_syscall_64+0xcf/0x170 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x5c/0xc1 RIP: 0033:0x7f5454178969 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:00007f54527e1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f545439ffa0 RCX: 00007f5454178969 RDX: 0000000000000094 RSI: 0000200000000540 RDI: 0000000000000005 RBP: 00007f54541faab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f545439ffa0 R15: 00007ffd51ce5748 Modules linked in: CR2: 0000000000000000 ---[ end trace 4bf509dfab148268 ]--- RIP: 0010:0x0 Code: Bad RIP value. RSP: 0018:ffff8881f6e09cf0 EFLAGS: 00010206 RAX: ffffffff8150a590 RBX: 0000000000000100 RCX: ffff8881e222de80 RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff8881de6cb1c0 RBP: ffff8881f6e09d30 R08: 0000000000000004 R09: 0000000000000003 R10: ffffed103edc1398 R11: 1ffff1103edc1398 R12: 00000000ffffa950 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881de6cb1c0 FS: 00007f54527e16c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 00000001d4c40000 CR4: 00000000003406b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 ---------------- Code disassembly (best guess): 0: e6 c1 out %al,$0xc1 2: c6 04 29 f1 movb $0xf1,(%rcx,%rbp,1) 6: 41 31 cb xor %ecx,%r11d 9: c1 c1 0e rol $0xe,%ecx c: 41 29 cb sub %ecx,%r11d f: 45 31 dc xor %r11d,%r12d 12: 41 c1 c3 18 rol $0x18,%r11d 16: 45 29 dc sub %r11d,%r12d 19: 44 89 e3 mov %r12d,%ebx 1c: 81 e3 ff ff 0f 00 and $0xfffff,%ebx 22: 4c 8b 2c dd 80 18 5c mov -0x79a3e780(,%rbx,8),%r13 29: 86 * 2a: 4d 85 ed test %r13,%r13 <-- trapping instruction 2d: 74 59 je 0x88 2f: 44 89 ff mov %r15d,%edi 32: eb 09 jmp 0x3d 34: 4d 8b 6d 00 mov 0x0(%r13),%r13 38: 4d 85 ed test %r13,%r13 3b: 74 4b je 0x88 3d: 45 rex.RB 3e: 39 .byte 0x39 3f: 65 gs