------------[ cut here ]------------ WARNING: CPU: 0 PID: 0 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226 Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.15.184-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226 Code: 24 45 31 f6 31 ff 89 de e8 dd e3 d7 ff 85 db 48 c7 c0 f2 ff ff ff 49 0f 44 c6 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 60 e0 d7 ff <0f> 0b e9 1c ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c ea fe RSP: 0018:ffffc90000007298 EFLAGS: 00010246 RAX: ffffffff819fe0e0 RBX: 0000000000000008 RCX: ffffffff8bebc3c0 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff17d7879 R10: fffffbfff17d7879 R11: 1ffffffff17d7878 R12: ffffffff8bebdb48 R13: 00007ffffffff000 R14: ffffc90000007308 R15: 0000000020000000 FS: 0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f70a2297110 CR3: 000000007d9c6000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline] ____bpf_probe_read_compat kernel/trace/bpf_trace.c:281 [inline] bpf_probe_read_compat+0xdd/0x170 kernel/trace/bpf_trace.c:277 bpf_prog_63d51858d7cca270+0x3d/0xf10 bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline] __bpf_prog_run include/linux/filter.h:628 [inline] bpf_prog_run include/linux/filter.h:635 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline] bpf_trace_run5+0x1ae/0x370 kernel/trace/bpf_trace.c:1918 __traceiter_neigh_update+0x91/0xe0 include/trace/events/neigh.h:72 trace_neigh_update include/trace/events/neigh.h:72 [inline] __neigh_update+0x1e79/0x1ff0 net/core/neighbour.c:1246 neigh_update net/core/neighbour.c:1429 [inline] neigh_event_ns+0xad/0x120 net/core/neighbour.c:1458 arp_process+0x14fc/0x1a30 net/ipv4/arp.c:830 NF_HOOK+0x2d4/0x360 include/linux/netfilter.h:302 __netif_receive_skb_list_ptype net/core/dev.c:5573 [inline] __netif_receive_skb_list_core+0x6db/0x740 net/core/dev.c:5616 __netif_receive_skb_list net/core/dev.c:5668 [inline] netif_receive_skb_list_internal+0x871/0xb90 net/core/dev.c:5759 gro_normal_list net/core/dev.c:5913 [inline] napi_complete_done+0x37d/0x830 net/core/dev.c:6651 virtqueue_napi_complete drivers/net/virtio_net.c:357 [inline] virtnet_poll+0x912/0xef0 drivers/net/virtio_net.c:1592 __napi_poll+0xc0/0x430 net/core/dev.c:7075 napi_poll net/core/dev.c:7142 [inline] net_rx_action+0x4a8/0x9c0 net/core/dev.c:7232 handle_softirqs+0x328/0x820 kernel/softirq.c:558 __do_softirq kernel/softirq.c:592 [inline] invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:641 irq_exit_rcu+0x5/0x20 kernel/softirq.c:653 common_interrupt+0xb5/0xd0 arch/x86/kernel/irq.c:242 asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:667 RIP: 0010:default_idle+0xb/0x10 arch/x86/kernel/process.c:723 Code: bf 48 89 df e8 16 c9 12 f8 eb b5 e8 4f be f6 ff 00 00 cc cc 00 00 cc cc 00 00 cc cc 00 00 cc 66 90 0f 00 2d a7 53 5b 00 fb f4 0f 1f 40 00 41 57 41 56 53 49 be 00 00 00 00 00 fc ff df 65 48 RSP: 0018:ffffffff8be07dc8 EFLAGS: 000002c6 RAX: b15bb7ebd173a800 RBX: ffffffff8bebc3c0 RCX: b15bb7ebd173a800 RDX: 0000000000000001 RSI: ffffffff8a0b11c0 RDI: ffffffff8a59a700 RBP: ffffffff8be07ef8 R08: dffffc0000000000 R09: ffffed101720765a R10: ffffed101720765a R11: 1ffff11017207659 R12: ffffffff8d68aaa8 R13: 0000000000000000 R14: 0000000000000000 R15: 1ffffffff17d7878 default_idle_call+0x81/0xc0 kernel/sched/idle.c:112 cpuidle_idle_call kernel/sched/idle.c:194 [inline] do_idle+0x21b/0x5b0 kernel/sched/idle.c:306 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:403 start_kernel+0x486/0x530 init/main.c:1140 secondary_startup_64_no_verify+0xb1/0xbb ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 48 89 df mov %rbx,%rdi 3: e8 16 c9 12 f8 call 0xf812c91e 8: eb b5 jmp 0xffffffbf a: e8 4f be f6 ff call 0xfff6be5e f: 00 00 add %al,(%rax) 11: cc int3 12: cc int3 13: 00 00 add %al,(%rax) 15: cc int3 16: cc int3 17: 00 00 add %al,(%rax) 19: cc int3 1a: cc int3 1b: 00 00 add %al,(%rax) 1d: cc int3 1e: 66 90 xchg %ax,%ax 20: 0f 00 2d a7 53 5b 00 verw 0x5b53a7(%rip) # 0x5b53ce 27: fb sti 28: f4 hlt * 29: c3 ret <-- trapping instruction 2a: 0f 1f 40 00 nopl 0x0(%rax) 2e: 41 57 push %r15 30: 41 56 push %r14 32: 53 push %rbx 33: 49 be 00 00 00 00 00 movabs $0xdffffc0000000000,%r14 3a: fc ff df 3d: 65 gs 3e: 48 rex.W