BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0010) - not-present page PGD 1eab3c067 P4D 1eab3c067 PUD 1e5b79067 PMD 0 Oops: 0010 [#1] PREEMPT SMP KASAN CPU: 1 PID: 980 Comm: syz-executor.2 Not tainted 5.4.274-syzkaller-00002-g6f97bd951d82 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:0x0 Code: Bad RIP value. RSP: 0018:ffff8881f6f09d18 EFLAGS: 00010206 RAX: ffffffff8154d7aa RBX: 0000000000000100 RCX: ffff8881edc53f00 RDX: 0000000080000100 RSI: 0000000000000000 RDI: ffff8881ddad71c0 RBP: ffff8881f6f09ec8 R08: ffffffff8154d3ee R09: 0000000000000003 R10: ffffffffffffffff R11: dffffc0000000001 R12: 00000000ffff99b0 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881ddad71c0 FS: 00007f01af57d6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 00000001f33fd000 CR4: 00000000003406a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> call_timer_fn+0x36/0x390 kernel/time/timer.c:1448 expire_timers kernel/time/timer.c:1493 [inline] __run_timers+0x879/0xbe0 kernel/time/timer.c:1817 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1830 __do_softirq+0x23b/0x6b7 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x195/0x1c0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:538 [inline] smp_apic_timer_interrupt+0x11a/0x460 arch/x86/kernel/apic/apic.c:1149 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834 </IRQ> RIP: 0010:memset+0x1/0x40 mm/kasan/common.c:105 Code: 7e ff 88 e8 09 00 00 c3 90 89 f6 48 8b 0c 24 31 d2 e9 93 22 00 00 0f 1f 00 89 f6 48 8b 0c 24 ba 01 00 00 00 e9 80 22 00 00 55 <41> 56 53 48 89 d3 41 89 f6 48 89 fd 48 8b 4c 24 18 48 89 d6 ba 01 RSP: 0018:ffff8881ebcbeb10 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: f2f2f200f1f1f1f1 RBX: dffffc0000000000 RCX: 1ffff1103d797d6c RDX: 0000000000000060 RSI: 0000000000000000 RDI: ffff8881ebcbec20 RBP: ffff8881ebcbec10 R08: dffffc0000000000 R09: ffff8881ebcbedd0 R10: 0000000000000002 R11: dffffc0000000001 R12: 0000000000000000 R13: ffff8881ebcbec20 R14: ffff8881ebcbed00 R15: ffff8881edc53f00 __unwind_start+0x90/0x890 arch/x86/kernel/unwind_orc.c:619 unwind_start arch/x86/include/asm/unwind.h:60 [inline] arch_stack_walk+0xdd/0x140 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0x118/0x1c0 kernel/stacktrace.c:123 save_stack mm/kasan/common.c:70 [inline] set_track mm/kasan/common.c:78 [inline] __kasan_kmalloc+0x171/0x210 mm/kasan/common.c:529 kmalloc include/linux/slab.h:556 [inline] kzalloc include/linux/slab.h:690 [inline] copy_verifier_state+0x581/0xbf0 kernel/bpf/verifier.c:746 is_state_visited kernel/bpf/verifier.c:7702 [inline] do_check+0x3286/0x9820 kernel/bpf/verifier.c:7837 bpf_check+0x2169/0xb340 kernel/bpf/verifier.c:9637 bpf_prog_load kernel/bpf/syscall.c:1724 [inline] __do_sys_bpf kernel/bpf/syscall.c:2891 [inline] __se_sys_bpf+0x8139/0xbcb0 kernel/bpf/syscall.c:2849 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x5c/0xc1 RIP: 0033:0x7f01b0202ea9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f01af57d0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f01b0339f80 RCX: 00007f01b0202ea9 RDX: 0000000000000048 RSI: 00000000200054c0 RDI: 0000000000000005 RBP: 00007f01b0271ff4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f01b0339f80 R15: 00007fff7c307538 Modules linked in: CR2: 0000000000000000 ---[ end trace 6044c5eeb09f82d7 ]--- RIP: 0010:0x0 Code: Bad RIP value. RSP: 0018:ffff8881f6f09d18 EFLAGS: 00010206 RAX: ffffffff8154d7aa RBX: 0000000000000100 RCX: ffff8881edc53f00 RDX: 0000000080000100 RSI: 0000000000000000 RDI: ffff8881ddad71c0 RBP: ffff8881f6f09ec8 R08: ffffffff8154d3ee R09: 0000000000000003 R10: ffffffffffffffff R11: dffffc0000000001 R12: 00000000ffff99b0 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881ddad71c0 FS: 00007f01af57d6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 00000001f33fd000 CR4: 00000000003406a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 7e ff jle 0x1 2: 88 e8 mov %ch,%al 4: 09 00 or %eax,(%rax) 6: 00 c3 add %al,%bl 8: 90 nop 9: 89 f6 mov %esi,%esi b: 48 8b 0c 24 mov (%rsp),%rcx f: 31 d2 xor %edx,%edx 11: e9 93 22 00 00 jmp 0x22a9 16: 0f 1f 00 nopl (%rax) 19: 89 f6 mov %esi,%esi 1b: 48 8b 0c 24 mov (%rsp),%rcx 1f: ba 01 00 00 00 mov $0x1,%edx 24: e9 80 22 00 00 jmp 0x22a9 29: 55 push %rbp * 2a: 41 56 push %r14 <-- trapping instruction 2c: 53 push %rbx 2d: 48 89 d3 mov %rdx,%rbx 30: 41 89 f6 mov %esi,%r14d 33: 48 89 fd mov %rdi,%rbp 36: 48 8b 4c 24 18 mov 0x18(%rsp),%rcx 3b: 48 89 d6 mov %rdx,%rsi 3e: ba .byte 0xba 3f: 01 .byte 0x1