------------[ cut here ]------------ WARNING: CPU: 1 PID: 4194 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226 Modules linked in: CPU: 1 PID: 4194 Comm: syz-execprog Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226 Code: 24 45 31 f6 31 ff 89 de e8 8d f6 d8 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 10 f3 d8 ff <0f> 0b e9 1c ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c ea fe RSP: 0000:ffffc90002e4f1d8 EFLAGS: 00010246 RAX: ffffffff819ed900 RBX: 0000000000000000 RCX: ffff88807a4bd940 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed100f497b29 R10: ffffed100f497b29 R11: 1ffff1100f497b28 R12: ffff88807a4bf0c8 R13: 00007ffffffff000 R14: ffffc90002e4f248 R15: 0000000000000000 FS: 000000c00262b898(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcbea6ef763 CR3: 000000001e091000 CR4: 00000000003506e0 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_3d2613b5dfc7747f+0x32/0x650 bpf_dispatcher_nop_func include/linux/bpf.h:888 [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:1624 __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:576 __do_softirq kernel/softirq.c:610 [inline] invoke_softirq kernel/softirq.c:450 [inline] __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671 common_interrupt+0x5e/0xd0 arch/x86/kernel/irq.c:242 asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:667 RIP: 0033:0x4d56c0 Code: 20 e8 c4 6e fa ff 48 8b 44 24 08 48 8b 5c 24 10 48 8b 4c 24 18 48 8b 7c 24 20 eb ae cc cc cc cc cc cc cc cc cc cc cc cc cc cc <49> 3b 66 10 0f 86 47 02 00 00 55 48 89 e5 48 83 ec 38 48 89 44 24 RSP: 002b:000000c00318b4a8 EFLAGS: 00000202 RAX: 0000000001328be4 RBX: 000000000000000e RCX: 0000000001778d1e RDX: 0000000000000001 RSI: 000000c00318b518 RDI: 0000000000000003 RBP: 000000c00318b5e8 R08: 000000000000000e R09: 000000000000000e R10: 0000000000000000 R11: 0000000000000000 R12: 000000c00318b440 R13: 0000000000000146 R14: 000000c0030fa540 R15: 000000c007067450