[ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.1' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 39.427378] A link change request failed with some changes committed already. Interface eth0 may have been left with an inconsistent configuration, please check. [ 39.448067] ------------[ cut here ]------------ [ 39.453163] Illegal XDP return value 4294967274, expect packet loss! [ 39.460076] WARNING: CPU: 1 PID: 8123 at net/core/filter.c:5537 bpf_warn_invalid_xdp_action+0x6f/0x80 [ 39.469434] Kernel panic - not syncing: panic_on_warn set ... [ 39.469434] [ 39.476847] CPU: 1 PID: 8123 Comm: syz-executor729 Not tainted 4.19.208-syzkaller #0 [ 39.484719] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.494510] Call Trace: [ 39.497104] [ 39.499298] dump_stack+0x1fc/0x2ef [ 39.502921] panic+0x26a/0x50e [ 39.506220] ? __warn_printk+0xf3/0xf3 [ 39.510124] ? bpf_warn_invalid_xdp_action+0x6f/0x80 [ 39.515253] ? __probe_kernel_read+0x130/0x1b0 [ 39.519824] ? __warn.cold+0x5/0x5a [ 39.523455] ? __warn+0xe4/0x200 [ 39.527248] ? bpf_warn_invalid_xdp_action+0x6f/0x80 [ 39.532344] __warn.cold+0x20/0x5a [ 39.535873] ? bpf_warn_invalid_xdp_action+0x6f/0x80 [ 39.540979] report_bug+0x262/0x2b0 [ 39.544788] do_error_trap+0x1d7/0x310 [ 39.548673] ? math_error+0x310/0x310 [ 39.552532] ? irq_work_claim+0xa6/0xc0 [ 39.556511] ? irq_work_queue+0x29/0x80 [ 39.560630] ? error_entry+0x72/0xd0 [ 39.564363] ? trace_hardirqs_off_caller+0x6e/0x210 [ 39.569694] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.574549] invalid_op+0x14/0x20 [ 39.577995] RIP: 0010:bpf_warn_invalid_xdp_action+0x6f/0x80 [ 39.583801] Code: 20 4a 4d 89 41 83 fc 04 48 c7 c6 60 4a 4d 89 48 0f 46 ee e8 03 6d e3 fa 44 89 e2 48 c7 c7 a0 4a 4d 89 48 89 ee e8 96 89 73 01 <0f> 0b 5b 5d 41 5c e9 e6 6c e3 fa 66 0f 1f 44 00 00 41 54 55 89 fd [ 39.603343] RSP: 0018:ffff8880ba107a18 EFLAGS: 00010282 [ 39.608786] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 39.616138] RDX: 0000000000000100 RSI: ffffffff814dfe11 RDI: ffffed1017420f35 [ 39.623601] RBP: ffffffff894d4a20 R08: 0000000000000001 R09: 0000000000000000 [ 39.631036] R10: 0000000000000005 R11: 0000000000000000 R12: 00000000ffffffea [ 39.638295] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8880ba107b18 [ 39.645664] ? vprintk_func+0x81/0x180 [ 39.649547] ? bpf_warn_invalid_xdp_action+0x6f/0x80 [ 39.654746] netif_receive_generic_xdp+0xcab/0x1540 [ 39.659757] do_xdp_generic.part.0+0x80/0x1a0 [ 39.664247] ? generic_xdp_tx+0x710/0x710 [ 39.668482] ? check_preemption_disabled+0x41/0x280 [ 39.673980] __netif_receive_skb_core+0xd00/0x3270 [ 39.678937] ? do_xdp_generic.part.0+0x1a0/0x1a0 [ 39.683712] ? mark_held_locks+0xf0/0xf0 [ 39.687957] ? napi_complete_done+0x16c/0x570 [ 39.692580] ? virtqueue_poll+0x100/0x150 [ 39.697072] ? virtnet_poll+0x764/0xe00 [ 39.701071] __netif_receive_skb_one_core+0xae/0x180 [ 39.706177] ? __netif_receive_skb_core+0x3270/0x3270 [ 39.711373] ? lock_acquire+0x170/0x3c0 [ 39.715679] ? process_backlog+0x1d0/0x700 [ 39.719930] __netif_receive_skb+0x27/0x1c0 [ 39.724444] process_backlog+0x241/0x700 [ 39.728599] ? net_rx_action+0x260/0xfb0 [ 39.732663] net_rx_action+0x4ac/0xfb0 [ 39.736556] ? napi_complete_done+0x570/0x570 [ 39.741184] ? check_preemption_disabled+0x41/0x280 [ 39.746355] __do_softirq+0x265/0x980 [ 39.750167] do_softirq_own_stack+0x2a/0x40 [ 39.754573] [ 39.756803] do_softirq.part.0+0x160/0x1c0 [ 39.761029] ? netlink_create+0x3c2/0x5e0 [ 39.765177] __local_bh_enable_ip+0x20e/0x270 [ 39.769677] netlink_create+0x402/0x5e0 [ 39.773666] ? rtnl_link_get_net_capable.constprop.0+0x230/0x230 [ 39.779894] __sock_create+0x3d8/0x740 [ 39.783793] __sys_socket+0xef/0x200 [ 39.787494] ? move_addr_to_kernel+0x70/0x70 [ 39.791892] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 39.797245] ? trace_hardirqs_off_caller+0x6e/0x210 [ 39.802253] __x64_sys_socket+0x6f/0xb0 [ 39.806220] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 39.810791] do_syscall_64+0xf9/0x620 [ 39.814592] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 39.819799] RIP: 0033:0x7efcf2ed4209 [ 39.823920] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 90 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 39.843512] RSP: 002b:00007ffeb0dc5e48 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 [ 39.851213] RAX: ffffffffffffffda RBX: 0000000000009a05 RCX: 00007efcf2ed4209 [ 39.858564] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000010 [ 39.865820] RBP: 0000000000000000 R08: 00007ffeb0dc5fe8 R09: 00007ffeb0dc5fe8 [ 39.873130] R10: 00007ffeb0dc5fe8 R11: 0000000000000246 R12: 00007ffeb0dc5e5c [ 39.880387] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 39.888143] Kernel Offset: disabled [ 39.891814] Rebooting in 86400 seconds..