------------[ cut here ]------------ Illegal XDP return value 4294967274, expect packet loss! WARNING: CPU: 1 PID: 6833 at net/core/filter.c:7195 bpf_warn_invalid_xdp_action+0x55/0x60 net/core/filter.c:7193 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 6833 Comm: syz-executor686 Not tainted 5.9.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1d6/0x29e lib/dump_stack.c:118 panic+0x2c0/0x800 kernel/panic.c:231 __warn+0x227/0x250 kernel/panic.c:600 report_bug+0x1b1/0x2e0 lib/bug.c:198 handle_bug+0x42/0x80 arch/x86/kernel/traps.c:234 exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:254 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536 RIP: 0010:bpf_warn_invalid_xdp_action+0x55/0x60 net/core/filter.c:7193 Code: e8 70 ab f7 fa 83 fb 04 48 c7 c0 35 e4 29 89 48 c7 c6 3d e4 29 89 48 0f 47 f0 48 c7 c7 08 e4 29 89 89 da 31 c0 e8 cb 45 c9 fa <0f> 0b 5b c3 0f 1f 80 00 00 00 00 55 41 57 41 56 41 55 41 54 53 50 RSP: 0018:ffffc90000da8ad0 EFLAGS: 00010246 RAX: cdecdda82430ca00 RBX: 00000000ffffffea RCX: ffff88808f58c300 RDX: 0000000000000103 RSI: 0000000000000103 RDI: 0000000000000000 RBP: 00000000ffffffea R08: ffffffff815e27d0 R09: ffffed1015d262c0 R10: ffffed1015d262c0 R11: 0000000000000000 R12: ffff8880a6685270 R13: dffffc0000000000 R14: ffffc90000da8cb8 R15: ffff8880a6685210 netif_receive_generic_xdp+0xe65/0x12f0 net/core/dev.c:4692 do_xdp_generic net/core/dev.c:4740 [inline] __netif_receive_skb_core+0x52c/0x36e0 net/core/dev.c:5112 __netif_receive_skb_one_core net/core/dev.c:5284 [inline] __netif_receive_skb+0xe3/0x3c0 net/core/dev.c:5400 process_backlog+0x578/0xa10 net/core/dev.c:6242 napi_poll net/core/dev.c:6688 [inline] net_rx_action+0x655/0x1200 net/core/dev.c:6758 __do_softirq+0x256/0x6d5 kernel/softirq.c:298 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0x91/0xe0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu+0x21f/0x230 kernel/softirq.c:423 irq_exit_rcu+0x5/0x20 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0xd5/0xf0 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581 RIP: 0010:unwind_next_frame+0x12b/0x1e90 arch/x86/kernel/unwind_orc.c:449 Code: ea 80 00 f6 03 03 0f 85 fb 19 00 00 4c 8b 6c 24 08 49 8d 6d 35 49 89 ef 49 c1 ef 03 49 be 00 00 00 00 00 fc ff df 43 8a 04 37 <84> c0 0f 85 c5 09 00 00 4c 0f be 65 00 48 8b 44 24 30 42 80 3c 30 RSP: 0018:ffffc900055472b8 EFLAGS: 00000a03 RAX: 1ffff92000aa8e00 RBX: 0000000000000000 RCX: ffffc90005547380 RDX: dffffc0000000000 RSI: 0000000000000002 RDI: 0000000000000001 RBP: ffffc9000554741d R08: dffffc0000000000 R09: ffffc900055473e8 R10: fffff52000aa8e89 R11: 0000000000000000 R12: ffffc90005547420 R13: ffffc900055473e8 R14: dffffc0000000000 R15: 1ffff92000aa8e83 __unwind_start+0x618/0x750 arch/x86/kernel/unwind_orc.c:702 unwind_start arch/x86/include/asm/unwind.h:60 [inline] arch_stack_walk+0x78/0xe0 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0xad/0x150 kernel/stacktrace.c:123 kasan_save_stack mm/kasan/common.c:48 [inline] kasan_set_track mm/kasan/common.c:56 [inline] __kasan_kmalloc+0x100/0x130 mm/kasan/common.c:461 slab_post_alloc_hook+0x3e/0x290 mm/slab.h:518 slab_alloc mm/slab.c:3312 [inline] kmem_cache_alloc+0x1c1/0x2d0 mm/slab.c:3482 skb_clone+0x1b2/0x370 net/core/skbuff.c:1449 ____bpf_clone_redirect net/core/filter.c:2176 [inline] bpf_clone_redirect+0xa2/0x350 net/core/filter.c:2163 bpf_prog_a467eebe3b6cb835+0x5f/0x524 bpf_dispatcher_nop_func include/linux/bpf.h:586 [inline] bpf_test_run+0x61d/0x8e0 net/bpf/test_run.c:49 bpf_prog_test_run_skb+0x9f6/0x1cf0 net/bpf/test_run.c:496 bpf_prog_test_run kernel/bpf/syscall.c:2996 [inline] __do_sys_bpf+0x40b2/0x11060 kernel/bpf/syscall.c:4196 do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x441849 Code: e8 fc ab 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 1b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fff32924b98 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441849 RDX: 0000000000000028 RSI: 0000000020000080 RDI: 000000000000000a RBP: 000000000000c74a R08: 00000000004002c8 R09: 00000000004002c8 R10: 0000000000000004 R11: 0000000000000246 R12: 00000000004025f0 R13: 0000000000402680 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds..