------------[ cut here ]------------ Illegal XDP return value 4294967274, expect packet loss! WARNING: CPU: 1 PID: 18182 at net/core/filter.c:5537 bpf_warn_invalid_xdp_action net/core/filter.c:5537 [inline] WARNING: CPU: 1 PID: 18182 at net/core/filter.c:5537 bpf_warn_invalid_xdp_action+0x6f/0x80 net/core/filter.c:5533 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 18182 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 panic+0x26a/0x50e kernel/panic.c:186 __warn.cold+0x20/0x5a kernel/panic.c:541 report_bug+0x262/0x2b0 lib/bug.c:183 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038 RIP: 0010:bpf_warn_invalid_xdp_action net/core/filter.c:5537 [inline] RIP: 0010:bpf_warn_invalid_xdp_action+0x6f/0x80 net/core/filter.c:5533 Code: e0 4a 4d 89 41 83 fc 04 48 c7 c6 20 4b 4d 89 48 0f 46 ee e8 53 5c e3 fa 44 89 e2 48 c7 c7 60 4b 4d 89 48 89 ee e8 26 94 73 01 <0f> 0b 5b 5d 41 5c e9 36 5c e3 fa 66 0f 1f 44 00 00 41 54 55 89 fd RSP: 0018:ffff8880ba1079d0 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000100 RSI: ffffffff814dff01 RDI: ffffed1017420f2c RBP: ffffffff894d4ae0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 00000000ffffffea R13: 0000000000000001 R14: 0000000000000400 R15: ffff8880ba107ad0 netif_receive_generic_xdp+0xcab/0x1540 net/core/dev.c:4390 do_xdp_generic.part.0+0x80/0x1a0 net/core/dev.c:4439 do_xdp_generic net/core/dev.c:4808 [inline] __netif_receive_skb_core+0xd00/0x3270 net/core/dev.c:4808 __netif_receive_skb_one_core+0xae/0x180 net/core/dev.c:4952 __netif_receive_skb+0x27/0x1c0 net/core/dev.c:5066 process_backlog+0x241/0x700 net/core/dev.c:5849 napi_poll net/core/dev.c:6280 [inline] net_rx_action+0x4ac/0xfb0 net/core/dev.c:6346 __do_softirq+0x265/0x980 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x215/0x260 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:preempt_count_add+0x20/0x190 kernel/sched/core.c:3230 Code: f7 36 8d e8 b2 f3 56 00 eb ab 48 b8 00 00 00 00 00 fc ff df 55 89 fd 53 48 c7 c3 60 37 24 8d 48 89 da 48 c1 ea 03 0f b6 14 02 <48> 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 2a 01 00 00 8b RSP: 0018:ffff888095f47310 EFLAGS: 00000a02 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: ffffffff8d243760 RCX: 0000000000000005 RDX: 0000000000000004 RSI: ffff888095f472b8 RDI: 0000000000000001 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000001 R10: ffff888095f474b7 R11: 0000000000074071 R12: ffff888095f474a0 R13: 0000000000000000 R14: ffff888095f47458 R15: 0000000000000200 unwind_next_frame+0x135/0x1400 arch/x86/kernel/unwind_orc.c:407 __save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:44 save_stack mm/kasan/kasan.c:448 [inline] set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553 kmem_cache_alloc_node_trace+0x151/0x3b0 mm/slab.c:3668 __do_kmalloc_node mm/slab.c:3688 [inline] __kmalloc_node_track_caller+0x38/0x70 mm/slab.c:3703 __kmalloc_reserve net/core/skbuff.c:137 [inline] pskb_expand_head+0x159/0xf20 net/core/skbuff.c:1473 skb_ensure_writable+0x2c6/0x470 net/core/skbuff.c:5196 __bpf_try_make_writable net/core/filter.c:1633 [inline] bpf_try_make_writable net/core/filter.c:1639 [inline] bpf_try_make_head_writable net/core/filter.c:1647 [inline] ____bpf_clone_redirect net/core/filter.c:2088 [inline] bpf_clone_redirect+0x131/0x430 net/core/filter.c:2066 ___bpf_prog_run+0x1bfa/0x4e80 kernel/bpf/core.c:1184 Kernel Offset: disabled Rebooting in 86400 seconds.. ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 36 8d ss (bad) 2: e8 b2 f3 56 00 callq 0x56f3b9 7: eb ab jmp 0xffffffb4 9: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 10: fc ff df 13: 55 push %rbp 14: 89 fd mov %edi,%ebp 16: 53 push %rbx 17: 48 c7 c3 60 37 24 8d mov $0xffffffff8d243760,%rbx 1e: 48 89 da mov %rbx,%rdx 21: 48 c1 ea 03 shr $0x3,%rdx 25: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx * 29: 48 89 d8 mov %rbx,%rax <-- trapping instruction 2c: 83 e0 07 and $0x7,%eax 2f: 83 c0 03 add $0x3,%eax 32: 38 d0 cmp %dl,%al 34: 7c 08 jl 0x3e 36: 84 d2 test %dl,%dl 38: 0f 85 2a 01 00 00 jne 0x168 3e: 8b .byte 0x8b