[[0;32m OK [0m] Reached target Login Prompts.
[[0;32m OK [0m] Reached target Multi-User System.
[[0;32m OK [0m] Reached target Graphical Interface.
Starting Update UTMP about System Runlevel Changes...
[[0;32m OK [0m] Started Update UTMP about System Runlevel Changes.
Debian GNU/Linux 9 syzkaller ttyS0
Warning: Permanently added '10.128.1.73' (ECDSA) to the list of known hosts.
syzkaller login: [ 136.564439][ T8393] IPVS: ftp: loaded support on port[0] = 21
[ 136.659424][ T9] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 136.672803][ T9] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
executing program
[ 136.708286][ T3729] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
[ 136.733833][ T9] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
[ 136.746966][ T9] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
[ 136.769420][ T2935] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready
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[ 137.636147][ C0] ------------[ cut here ]------------
[ 137.641848][ C0] Illegal XDP return value 4294967283, expect packet loss!
[ 137.649692][ C0] WARNING: CPU: 0 PID: 3729 at net/core/filter.c:8109 bpf_warn_invalid_xdp_action+0x6f/0x80
[ 137.659909][ C0] Modules linked in:
[ 137.664004][ C0] CPU: 0 PID: 3729 Comm: kworker/0:3 Not tainted 5.12.0-rc4-syzkaller #0
[ 137.672693][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 137.682887][ C0] Workqueue: ipv6_addrconf addrconf_dad_work
[ 137.689471][ C0] RIP: 0010:bpf_warn_invalid_xdp_action+0x6f/0x80
[ 137.696324][ C0] Code: a0 d2 66 8a 41 83 fc 04 48 c7 c6 e0 d2 66 8a 48 0f 46 ee e8 43 bf 6c fa 44 89 e2 48 c7 c7 20 d3 66 8a 48 89 ee e8 7e 96 ba 01 <0f> 0b 5b 5d 41 5c e9 26 bf 6c fa 66 0f 1f 44 00 00 41 57 41 56 49
[ 137.717847][ C0] RSP: 0018:ffffc90000007928 EFLAGS: 00010282
[ 137.723958][ C0] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 137.732122][ C0] RDX: ffff88801caed4c0 RSI: ffffffff815c4d15 RDI: fffff52000000f17
[ 137.740236][ C0] RBP: ffffffff8a66d2a0 R08: 0000000000000000 R09: 0000000000000000
[ 137.748613][ C0] R10: ffffffff815bdaae R11: 0000000000000000 R12: 00000000fffffff3
[ 137.756917][ C0] R13: 000000000000dd86 R14: ffffc90000007b18 R15: ffff888023181dc0
[ 137.765249][ C0] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
[ 137.774365][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 137.781272][ C0] CR2: 00007ffd7884e0f8 CR3: 0000000021986000 CR4: 00000000001506f0
[ 137.789542][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 137.797905][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 137.806140][ C0] Call Trace:
[ 137.809453][ C0]
[ 137.812626][ C0] netif_receive_generic_xdp+0xe8f/0x1780
[ 137.819980][ C0] __netif_receive_skb_core+0x505/0x37f0
[ 137.825870][ C0] ? generic_xdp_tx+0x6b0/0x6b0
[ 137.830761][ C0] ? __lock_acquire+0xb43/0x54c0
[ 137.835811][ C0] ? lockdep_hardirqs_on_prepare+0x400/0x400
[ 137.841863][ C0] ? find_held_lock+0x2d/0x110
[ 137.846735][ C0] __netif_receive_skb_list_core+0x338/0x8e0
[ 137.852859][ C0] ? process_backlog+0x6c0/0x6c0
[ 137.858018][ C0] ? ktime_get_with_offset+0x3f2/0x500
[ 137.863549][ C0] ? lockdep_hardirqs_on+0x79/0x100
[ 137.868872][ C0] netif_receive_skb_list_internal+0x777/0xd70
[ 137.875093][ C0] ? __netif_receive_skb_list_core+0x8e0/0x8e0
[ 137.881355][ C0] ? find_held_lock+0x2d/0x110
[ 137.886474][ C0] ? lock_downgrade+0x6e0/0x6e0
[ 137.891383][ C0] netif_receive_skb_list+0x54/0x5b0
[ 137.896942][ C0] ieee80211_rx_napi+0x344/0x3d0
[ 137.902022][ C0] ? ieee80211_rx_list+0x2680/0x2680
[ 137.907547][ C0] ? lockdep_hardirqs_on+0x79/0x100
[ 137.913106][ C0] ? _raw_spin_unlock_irqrestore+0x3d/0x70
[ 137.919133][ C0] ieee80211_tasklet_handler+0xd4/0x130
[ 137.924745][ C0] tasklet_action_common.constprop.0+0x1d7/0x2d0
[ 137.931303][ C0] __do_softirq+0x29b/0x9f6
[ 137.936099][ C0] do_softirq.part.0+0xd9/0x130
[ 137.941004][ C0]
[ 137.943973][ C0] ? ip6_finish_output2+0x727/0x1700
[ 137.949497][ C0] __local_bh_enable_ip+0x102/0x120
[ 137.954970][ C0] ip6_finish_output2+0x755/0x1700
[ 137.960222][ C0] __ip6_finish_output+0x4c1/0xe10
[ 137.965397][ C0] ip6_finish_output+0x35/0x200
[ 137.971620][ C0] ip6_output+0x1e4/0x530
[ 137.976086][ C0] ndisc_send_skb+0xa99/0x1750
[ 137.981106][ C0] ? ndisc_ifinfo_sysctl_change+0x5f0/0x5f0
[ 137.987283][ C0] ? ndisc_parse_options.part.0+0x510/0x510
[ 137.993844][ C0] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70
[ 138.000215][ C0] ? skb_set_owner_w+0x270/0x420
[ 138.005287][ C0] ndisc_send_ns+0x3a9/0x840
[ 138.010105][ C0] ? pndisc_redo+0x20/0x20
[ 138.014859][ C0] ? mark_held_locks+0x9f/0xe0
[ 138.019945][ C0] ? __local_bh_enable_ip+0xa0/0x120
[ 138.025391][ C0] addrconf_dad_work+0xc3f/0x12b0
[ 138.030537][ C0] ? addrconf_dad_completed+0xc70/0xc70
[ 138.036303][ C0] process_one_work+0x98d/0x1600
[ 138.041287][ C0] ? pwq_dec_nr_in_flight+0x320/0x320
[ 138.046864][ C0] ? rwlock_bug.part.0+0x90/0x90
[ 138.051835][ C0] ? _raw_spin_lock_irq+0x41/0x50
[ 138.057005][ C0] worker_thread+0x64c/0x1120
[ 138.061727][ C0] ? __kthread_parkme+0x13f/0x1e0
[ 138.066957][ C0] ? process_one_work+0x1600/0x1600
[ 138.072308][ C0] kthread+0x3b1/0x4a0
[ 138.076493][ C0] ? __kthread_bind_mask+0xc0/0xc0
[ 138.081866][ C0] ret_from_fork+0x1f/0x30
[ 138.086394][ C0] Kernel panic - not syncing: panic_on_warn set ...
[ 138.093433][ C0] CPU: 0 PID: 3729 Comm: kworker/0:3 Not tainted 5.12.0-rc4-syzkaller #0
[ 138.102648][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 138.112729][ C0] Workqueue: ipv6_addrconf addrconf_dad_work
[ 138.118724][ C0] Call Trace:
[ 138.122003][ C0]
[ 138.124861][ C0] dump_stack+0x141/0x1d7
[ 138.129194][ C0] panic+0x306/0x73d
[ 138.133523][ C0] ? __warn_printk+0xf3/0xf3
[ 138.138143][ C0] ? __warn.cold+0x1a/0x44
[ 138.142559][ C0] ? bpf_warn_invalid_xdp_action+0x6f/0x80
[ 138.148479][ C0] __warn.cold+0x35/0x44
[ 138.152724][ C0] ? wake_up_klogd.part.0+0x8e/0xd0
[ 138.157927][ C0] ? bpf_warn_invalid_xdp_action+0x6f/0x80
[ 138.164566][ C0] report_bug+0x1bd/0x210
[ 138.169714][ C0] handle_bug+0x3c/0x60
[ 138.173927][ C0] exc_invalid_op+0x14/0x40
[ 138.178555][ C0] asm_exc_invalid_op+0x12/0x20
[ 138.183412][ C0] RIP: 0010:bpf_warn_invalid_xdp_action+0x6f/0x80
[ 138.189860][ C0] Code: a0 d2 66 8a 41 83 fc 04 48 c7 c6 e0 d2 66 8a 48 0f 46 ee e8 43 bf 6c fa 44 89 e2 48 c7 c7 20 d3 66 8a 48 89 ee e8 7e 96 ba 01 <0f> 0b 5b 5d 41 5c e9 26 bf 6c fa 66 0f 1f 44 00 00 41 57 41 56 49
[ 138.209479][ C0] RSP: 0018:ffffc90000007928 EFLAGS: 00010282
[ 138.215563][ C0] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[ 138.224156][ C0] RDX: ffff88801caed4c0 RSI: ffffffff815c4d15 RDI: fffff52000000f17
[ 138.232169][ C0] RBP: ffffffff8a66d2a0 R08: 0000000000000000 R09: 0000000000000000
[ 138.240156][ C0] R10: ffffffff815bdaae R11: 0000000000000000 R12: 00000000fffffff3
[ 138.248254][ C0] R13: 000000000000dd86 R14: ffffc90000007b18 R15: ffff888023181dc0
[ 138.256254][ C0] ? wake_up_klogd.part.0+0x8e/0xd0
[ 138.261481][ C0] ? vprintk_func+0x95/0x1e0
[ 138.266202][ C0] ? bpf_warn_invalid_xdp_action+0x6f/0x80
[ 138.272026][ C0] netif_receive_generic_xdp+0xe8f/0x1780
[ 138.277758][ C0] __netif_receive_skb_core+0x505/0x37f0
[ 138.283572][ C0] ? generic_xdp_tx+0x6b0/0x6b0
[ 138.289015][ C0] ? __lock_acquire+0xb43/0x54c0
[ 138.294189][ C0] ? lockdep_hardirqs_on_prepare+0x400/0x400
[ 138.301059][ C0] ? find_held_lock+0x2d/0x110
[ 138.305924][ C0] __netif_receive_skb_list_core+0x338/0x8e0
[ 138.311952][ C0] ? process_backlog+0x6c0/0x6c0
[ 138.316892][ C0] ? ktime_get_with_offset+0x3f2/0x500
[ 138.322557][ C0] ? lockdep_hardirqs_on+0x79/0x100
[ 138.327769][ C0] netif_receive_skb_list_internal+0x777/0xd70
[ 138.333956][ C0] ? __netif_receive_skb_list_core+0x8e0/0x8e0
[ 138.340130][ C0] ? find_held_lock+0x2d/0x110
[ 138.344902][ C0] ? lock_downgrade+0x6e0/0x6e0
[ 138.349756][ C0] netif_receive_skb_list+0x54/0x5b0
[ 138.355048][ C0] ieee80211_rx_napi+0x344/0x3d0
[ 138.360350][ C0] ? ieee80211_rx_list+0x2680/0x2680
[ 138.365726][ C0] ? lockdep_hardirqs_on+0x79/0x100
[ 138.370925][ C0] ? _raw_spin_unlock_irqrestore+0x3d/0x70
[ 138.376753][ C0] ieee80211_tasklet_handler+0xd4/0x130
[ 138.382304][ C0] tasklet_action_common.constprop.0+0x1d7/0x2d0
[ 138.388643][ C0] __do_softirq+0x29b/0x9f6
[ 138.393170][ C0] do_softirq.part.0+0xd9/0x130
[ 138.398102][ C0]
[ 138.401065][ C0] ? ip6_finish_output2+0x727/0x1700
[ 138.406639][ C0] __local_bh_enable_ip+0x102/0x120
[ 138.411882][ C0] ip6_finish_output2+0x755/0x1700
[ 138.417022][ C0] __ip6_finish_output+0x4c1/0xe10
[ 138.422152][ C0] ip6_finish_output+0x35/0x200
[ 138.427552][ C0] ip6_output+0x1e4/0x530
[ 138.434843][ C0] ndisc_send_skb+0xa99/0x1750
[ 138.439639][ C0] ? ndisc_ifinfo_sysctl_change+0x5f0/0x5f0
[ 138.445569][ C0] ? ndisc_parse_options.part.0+0x510/0x510
[ 138.451468][ C0] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70
[ 138.457731][ C0] ? skb_set_owner_w+0x270/0x420
[ 138.462680][ C0] ndisc_send_ns+0x3a9/0x840
[ 138.467278][ C0] ? pndisc_redo+0x20/0x20
[ 138.471793][ C0] ? mark_held_locks+0x9f/0xe0
[ 138.476565][ C0] ? __local_bh_enable_ip+0xa0/0x120
[ 138.481848][ C0] addrconf_dad_work+0xc3f/0x12b0
[ 138.486873][ C0] ? addrconf_dad_completed+0xc70/0xc70
[ 138.492440][ C0] process_one_work+0x98d/0x1600
[ 138.497389][ C0] ? pwq_dec_nr_in_flight+0x320/0x320
[ 138.502867][ C0] ? rwlock_bug.part.0+0x90/0x90
[ 138.508001][ C0] ? _raw_spin_lock_irq+0x41/0x50
[ 138.513045][ C0] worker_thread+0x64c/0x1120
[ 138.517772][ C0] ? __kthread_parkme+0x13f/0x1e0
[ 138.523083][ C0] ? process_one_work+0x1600/0x1600
[ 138.528302][ C0] kthread+0x3b1/0x4a0
[ 138.532381][ C0] ? __kthread_bind_mask+0xc0/0xc0
[ 138.537530][ C0] ret_from_fork+0x1f/0x30
[ 138.542777][ C0] Kernel Offset: disabled
[ 138.547203][ C0] Rebooting in 86400 seconds..