BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0010) - not-present page PGD 1e74eb067 P4D 1e74eb067 PUD 0 Oops: 0010 [#1] PREEMPT SMP KASAN CPU: 0 PID: 3329 Comm: syz.0.854 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: ffff8881e5a81f80 RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff8881e01471c0 RBP: ffff8881f6e09d30 R08: 0000000000000004 R09: 0000000000000003 R10: ffffed103edc1398 R11: 1ffff1103edc1398 R12: 00000000ffffb698 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881e01471c0 FS: 00007ff796da66c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 00000001e195f000 CR4: 00000000003406b0 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:bpf_prog_kallsyms_find kernel/bpf/core.c:680 [inline] RIP: 0010:is_bpf_text_address+0x6d/0x290 kernel/bpf/core.c:718 Code: c2 04 bf 01 00 00 00 44 89 f6 e8 be c5 f6 ff 41 83 fe 01 0f 85 d4 01 00 00 49 bd 00 00 00 00 00 fc ff df 44 8b 3d 73 ee 57 04 <4c> 89 7d c8 41 83 e7 01 4e 8d 34 fd 08 ab c0 85 4c 89 f0 48 c1 e8 RSP: 0018:ffff8881e5c1f8a8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffffffff8168bc72 RBX: 0000000000000000 RCX: 0000000000000002 RDX: ffff8881e5a81f80 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffff8881e5c1f8e0 R08: dffffc0000000000 R09: ffffed103edcb135 R10: ffffed103edcb135 R11: 1ffff1103edcb134 R12: ffff8881e5a81f80 R13: dffffc0000000000 R14: 0000000000000001 R15: 00000000000009a6 kernel_text_address kernel/extable.c:148 [inline] __kernel_text_address+0xa0/0x100 kernel/extable.c:103 unwind_get_return_address+0x4d/0x90 arch/x86/kernel/unwind_frame.c:19 arch_stack_walk+0xf0/0x140 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0xaa/0xf0 kernel/stacktrace.c:123 save_stack mm/kasan/common.c:70 [inline] set_track mm/kasan/common.c:78 [inline] __kasan_kmalloc+0x162/0x200 mm/kasan/common.c:529 kasan_slab_alloc+0x12/0x20 mm/kasan/common.c:537 slab_post_alloc_hook mm/slab.h:584 [inline] slab_alloc_node mm/slub.c:2829 [inline] slab_alloc mm/slub.c:2837 [inline] kmem_cache_alloc+0xe2/0x270 mm/slub.c:2842 kmem_cache_zalloc include/linux/slab.h:680 [inline] lsm_inode_alloc security/security.c:556 [inline] security_inode_alloc+0x33/0x110 security/security.c:928 inode_init_always+0x652/0x8b0 fs/inode.c:202 alloc_inode fs/inode.c:238 [inline] new_inode_pseudo+0x91/0x210 fs/inode.c:966 sock_alloc net/socket.c:559 [inline] __sock_create+0x12b/0x740 net/socket.c:1391 sock_create net/socket.c:1478 [inline] __sys_socketpair+0x1a7/0x5a0 net/socket.c:1578 __do_sys_socketpair net/socket.c:1631 [inline] __se_sys_socketpair net/socket.c:1628 [inline] __x64_sys_socketpair+0x9b/0xb0 net/socket.c:1628 do_syscall_64+0xcf/0x170 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x5c/0xc1 RIP: 0033:0x7ff79873d969 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:00007ff796da6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000035 RAX: ffffffffffffffda RBX: 00007ff798964fa0 RCX: 00007ff79873d969 RDX: 0000000000000001 RSI: 000000000000000a RDI: 0000000000000002 RBP: 00007ff7987bfab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000200000000140 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ff798964fa0 R15: 00007ffdc6f4fc88 Modules linked in: CR2: 0000000000000000 ---[ end trace 465ed09e36d8b6d6 ]--- RIP: 0010:0x0 Code: Bad RIP value. RSP: 0018:ffff8881f6e09cf0 EFLAGS: 00010206 RAX: ffffffff8150a590 RBX: 0000000000000100 RCX: ffff8881e5a81f80 RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff8881e01471c0 RBP: ffff8881f6e09d30 R08: 0000000000000004 R09: 0000000000000003 R10: ffffed103edc1398 R11: 1ffff1103edc1398 R12: 00000000ffffb698 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881e01471c0 FS: 00007ff796da66c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 00000001e195f000 CR4: 00000000003406b0 DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 ---------------- Code disassembly (best guess): 0: c2 04 bf ret $0xbf04 3: 01 00 add %eax,(%rax) 5: 00 00 add %al,(%rax) 7: 44 89 f6 mov %r14d,%esi a: e8 be c5 f6 ff call 0xfff6c5cd f: 41 83 fe 01 cmp $0x1,%r14d 13: 0f 85 d4 01 00 00 jne 0x1ed 19: 49 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%r13 20: fc ff df 23: 44 8b 3d 73 ee 57 04 mov 0x457ee73(%rip),%r15d # 0x457ee9d * 2a: 4c 89 7d c8 mov %r15,-0x38(%rbp) <-- trapping instruction 2e: 41 83 e7 01 and $0x1,%r15d 32: 4e 8d 34 fd 08 ab c0 lea -0x7a3f54f8(,%r15,8),%r14 39: 85 3a: 4c 89 f0 mov %r14,%rax 3d: 48 rex.W 3e: c1 .byte 0xc1 3f: e8 .byte 0xe8