------------[ cut here ]------------ WARNING: CPU: 0 PID: 4199 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226 Modules linked in: CPU: 0 PID: 4199 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226 Code: 24 45 31 f6 31 ff 89 de e8 7d 90 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 00 8d 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:ffffc90002f0ee28 EFLAGS: 00010246 RAX: ffffffff81a0a790 RBX: 0000000000000000 RCX: ffff88807a033b80 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffc90002f0f257 R09: ffffc90002f0f224 R10: dffffc0000000000 R11: fffff520005e1e4b R12: ffff88807a035308 R13: ffffc90000db0030 R14: ffffc90002f0ee88 R15: 0000000000000000 FS: 0000555576c2d500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32f23ffc CR3: 00000000635ad000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 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+0x32/0xbe0 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+0x792/0x60b0 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+0xd2/0x270 net/core/flow_dissector.c:1648 skb_get_hash include/linux/skbuff.h:1432 [inline] skb_tx_hash net/core/dev.c:3256 [inline] netdev_pick_tx+0x335/0xad0 net/core/dev.c:4153 netdev_core_pick_tx+0x12e/0x2e0 net/core/dev.c:4186 __dev_queue_xmit+0x756/0x2f80 net/core/dev.c:4261 hsr_xmit net/hsr/hsr_forward.c:340 [inline] hsr_forward_do net/hsr/hsr_forward.c:431 [inline] hsr_forward_skb+0xfd2/0x1700 net/hsr/hsr_forward.c:584 send_hsr_supervision_frame+0x5f7/0xb80 net/hsr/hsr_device.c:349 hsr_announce+0x168/0x310 net/hsr/hsr_device.c:405 call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648 expire_timers kernel/time/timer.c:1699 [inline] __run_timers+0x53e/0x800 kernel/time/timer.c:1970 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983 handle_softirqs+0x339/0x830 kernel/softirq.c:576 __do_softirq kernel/softirq.c:610 [inline] invoke_softirq kernel/softirq.c:450 [inline] __irq_exit_rcu+0x13b/0x230 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: 0033:0x7f716d7e5d91 Code: 24 18 8b 40 08 44 89 64 24 2c 89 44 24 08 bf 10 27 00 00 e8 71 2b 13 00 ba 01 00 00 40 48 89 ee bf ff ff ff ff e8 3f 04 13 00 <39> c3 0f 84 af 04 00 00 4c 8b 25 00 a9 ed 00 48 8b 05 01 a9 ed 00 RSP: 002b:00007ffc44a1fd90 EFLAGS: 00000206 RAX: 0000000000000000 RBX: 0000000000002aa6 RCX: 00007f716d918933 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffffffff RBP: 00007ffc44a1fdcc R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000001388 R13: 00000000000927c0 R14: 000000000011fc37 R15: 00007ffc44a1fe20