------------[ cut here ]------------ WARNING: CPU: 1 PID: 4435 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226 Modules linked in: CPU: 1 PID: 4435 Comm: syz.3.47 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226 Code: 24 45 31 f6 31 ff 89 de e8 6d f7 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 f0 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:ffffc9000332e9a8 EFLAGS: 00010246 RAX: ffffffff819ed660 RBX: 0000000000000000 RCX: ffff88801e8a9dc0 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffc9000332eda4 R10: fffff52000665dbb R11: 1ffff92000665db4 R12: ffff88801e8ab548 R13: ffffc9000118c030 R14: ffffc9000332ea08 R15: 0000000000000000 FS: 00007fafbc13c6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000000e000 CR3: 000000005d930000 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_user kernel/trace/bpf_trace.c:166 [inline] bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163 bpf_prog_f2594087b0f175cc+0x32/0x968 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_prog_run_pin_on_cpu include/linux/filter.h:652 [inline] bpf_flow_dissect+0x12b/0x3f0 net/core/flow_dissector.c:896 __skb_flow_dissect+0x79f/0x5af0 net/core/flow_dissector.c:1024 skb_flow_dissect_flow_keys include/linux/skbuff.h:1390 [inline] ___skb_get_hash+0x55/0x680 net/core/flow_dissector.c:1583 __skb_get_hash+0xb4/0x220 net/core/flow_dissector.c:1648 skb_get_hash include/linux/skbuff.h:1432 [inline] udp_flow_src_port include/net/udp.h:230 [inline] geneve_xmit_skb drivers/net/geneve.c:932 [inline] geneve_xmit+0x646/0x3070 drivers/net/geneve.c:1119 __netdev_start_xmit include/linux/netdevice.h:5027 [inline] netdev_start_xmit include/linux/netdevice.h:5041 [inline] xmit_one net/core/dev.c:3649 [inline] dev_hard_start_xmit+0x2a5/0x7e0 net/core/dev.c:3665 __dev_queue_xmit+0x19df/0x2ed0 net/core/dev.c:4288 neigh_hh_output include/net/neighbour.h:493 [inline] neigh_output include/net/neighbour.h:507 [inline] ip6_finish_output2+0x1035/0x1500 net/ipv6/ip6_output.c:130 dst_output include/net/dst.h:452 [inline] NF_HOOK include/linux/netfilter.h:302 [inline] ndisc_send_skb+0xbea/0x14a0 net/ipv6/ndisc.c:513 addrconf_rs_timer+0x2b8/0x600 net/ipv6/addrconf.c:3956 call_timer_fn+0x16c/0x530 kernel/time/timer.c:1451 expire_timers kernel/time/timer.c:1496 [inline] __run_timers+0x525/0x7c0 kernel/time/timer.c:1767 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780 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 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0033:0x7fafbdda4cf8 Code: 98 6e 1d 00 31 c0 e8 67 f5 fe ff 48 83 c4 68 5b 5d 41 5c 41 5e c3 0f 1f 40 00 48 8b 44 24 18 48 8b 1c 24 48 8b b0 80 00 00 00 <8b> 78 08 48 8d 53 30 e8 dc 57 ff ff 48 89 83 88 00 00 00 e9 45 fe RSP: 002b:00007fafbc13c060 EFLAGS: 00000246 RAX: 00007fafbdfe6e18 RBX: 00007fafbe12bfa0 RCX: 00007fafbdf5a775 RDX: baa95bde100e6f88 RSI: 0000000000000000 RDI: 00007fafbc13c588 RBP: 00007fafbdf57f91 R08: 0000000000000049 R09: 00166a3721279492 R10: 000000279224dba4 R11: 00000000000034f6 R12: 0000000000000000 R13: 00007fafbe12c038 R14: 00007fafbe12bfa0 R15: 00007ffe19294fd8