[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 68.462430][ T26] audit: type=1800 audit(1576808275.125:25): pid=9146 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 68.490058][ T26] audit: type=1800 audit(1576808275.125:26): pid=9146 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 68.538341][ T26] audit: type=1800 audit(1576808275.125:27): pid=9146 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.179' (ECDSA) to the list of known hosts. syzkaller login: [ 81.248826][ T9302] IPVS: ftp: loaded support on port[0] = 21 [ 81.307635][ T9302] chnl_net:caif_netlink_parms(): no params data found [ 81.337248][ T9302] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.345122][ T9302] bridge0: port 1(bridge_slave_0) entered disabled state [ 81.353377][ T9302] device bridge_slave_0 entered promiscuous mode [ 81.361517][ T9302] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.368652][ T9302] bridge0: port 2(bridge_slave_1) entered disabled state [ 81.376532][ T9302] device bridge_slave_1 entered promiscuous mode [ 81.395106][ T9302] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 81.407245][ T9302] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 81.427874][ T9302] team0: Port device team_slave_0 added [ 81.435897][ T9302] team0: Port device team_slave_1 added [ 81.521722][ T9302] device hsr_slave_0 entered promiscuous mode [ 81.569675][ T9302] device hsr_slave_1 entered promiscuous mode [ 81.664889][ T9302] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 81.721824][ T9302] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 81.761515][ T9302] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 81.821878][ T9302] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 81.889469][ T9302] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.896848][ T9302] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.904859][ T9302] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.912118][ T9302] bridge0: port 1(bridge_slave_0) entered forwarding state [ 81.947240][ T9302] 8021q: adding VLAN 0 to HW filter on device bond0 [ 81.961568][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 81.983482][ T5] bridge0: port 1(bridge_slave_0) entered disabled state [ 82.002598][ T5] bridge0: port 2(bridge_slave_1) entered disabled state [ 82.010962][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 82.024370][ T9302] 8021q: adding VLAN 0 to HW filter on device team0 [ 82.034554][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 82.043571][ T39] bridge0: port 1(bridge_slave_0) entered blocking state [ 82.050709][ T39] bridge0: port 1(bridge_slave_0) entered forwarding state [ 82.071743][ T9305] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 82.080647][ T9305] bridge0: port 2(bridge_slave_1) entered blocking state [ 82.087706][ T9305] bridge0: port 2(bridge_slave_1) entered forwarding state [ 82.096526][ T9305] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 82.106512][ T9305] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 82.116970][ T9305] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 82.126760][ T39] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 82.138771][ T9302] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 82.151394][ T9302] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 82.160410][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 82.179585][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 82.187208][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready executing program [ 82.197046][ T9302] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 82.249763][ T9302] ------------[ cut here ]------------ [ 82.255301][ T9302] net/hsr/hsr_forward.c:354: Malformed frame (port_src hsr0) [ 82.263411][ T9302] WARNING: CPU: 0 PID: 9302 at net/hsr/hsr_forward.c:353 hsr_forward_skb+0x127b/0x1d30 [ 82.273082][ T9302] Kernel panic - not syncing: panic_on_warn set ... [ 82.279699][ T9302] CPU: 0 PID: 9302 Comm: syz-executor270 Not tainted 5.5.0-rc2-syzkaller #0 [ 82.288362][ T9302] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.298420][ T9302] Call Trace: [ 82.301746][ T9302] dump_stack+0x197/0x210 [ 82.306062][ T9302] ? hsr_forward_skb+0x1230/0x1d30 [ 82.311167][ T9302] panic+0x2e3/0x75c [ 82.315044][ T9302] ? add_taint.cold+0x16/0x16 [ 82.319727][ T9302] ? __kasan_check_write+0x14/0x20 [ 82.324819][ T9302] ? __warn.cold+0x14/0x3e [ 82.329318][ T9302] ? __warn+0xd9/0x1cf [ 82.333375][ T9302] ? hsr_forward_skb+0x127b/0x1d30 [ 82.338485][ T9302] __warn.cold+0x2f/0x3e [ 82.342724][ T9302] ? hsr_forward_skb+0x127b/0x1d30 [ 82.347850][ T9302] report_bug+0x289/0x300 [ 82.352167][ T9302] do_error_trap+0x11b/0x200 [ 82.356737][ T9302] do_invalid_op+0x37/0x50 [ 82.361142][ T9302] ? hsr_forward_skb+0x127b/0x1d30 [ 82.366244][ T9302] invalid_op+0x23/0x30 [ 82.370387][ T9302] RIP: 0010:hsr_forward_skb+0x127b/0x1d30 [ 82.376100][ T9302] Code: fa ff ff e8 77 dc b7 f9 4c 89 e1 ba 62 01 00 00 48 c7 c6 80 61 f5 88 48 c7 c7 c0 61 f5 88 c6 05 f2 b7 b7 02 01 e8 14 86 88 f9 <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 [ 82.395772][ T9302] RSP: 0018:ffffc900023278c0 EFLAGS: 00010286 [ 82.401847][ T9302] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 82.409815][ T9302] RDX: 0000000000000000 RSI: ffffffff815e8906 RDI: fffff52000464f0a [ 82.417786][ T9302] RBP: ffffc90002327970 R08: ffff8880969e84c0 R09: 0000000000000000 [ 82.426009][ T9302] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88808f5ac000 [ 82.433980][ T9302] R13: ffff8880a76efa10 R14: 000000000000ffff R15: ffff8880a2829340 [ 82.441953][ T9302] ? vprintk_func+0x86/0x189 [ 82.446530][ T9302] ? validate_xmit_skb+0x81f/0xe50 [ 82.451706][ T9302] ? netdev_pick_tx+0x4c6/0xb00 [ 82.456652][ T9302] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 82.462451][ T9302] hsr_dev_xmit+0x7d/0xe0 [ 82.466942][ T9302] dev_direct_xmit+0x419/0x630 [ 82.471966][ T9302] ? __kasan_check_read+0x1/0x20 [ 82.476891][ T9302] ? validate_xmit_skb_list+0x150/0x150 [ 82.482475][ T9302] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 82.488701][ T9302] ? netdev_pick_tx+0x14e/0xb00 [ 82.493555][ T9302] packet_direct_xmit+0x1a9/0x250 [ 82.498760][ T9302] packet_sendmsg+0x260d/0x6220 [ 82.503705][ T9302] ? ___might_sleep+0x163/0x2c0 [ 82.508544][ T9302] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 82.515403][ T9302] ? aa_label_sk_perm+0x91/0xf0 [ 82.520868][ T9302] ? packet_notifier+0x880/0x880 [ 82.525803][ T9302] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 82.531329][ T9302] ? apparmor_socket_sendmsg+0x2a/0x30 [ 82.536783][ T9302] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 82.543002][ T9302] ? security_socket_sendmsg+0x8d/0xc0 [ 82.548438][ T9302] ? packet_notifier+0x880/0x880 [ 82.553357][ T9302] sock_sendmsg+0xd7/0x130 [ 82.557804][ T9302] __sys_sendto+0x262/0x380 [ 82.562309][ T9302] ? __ia32_sys_getpeername+0xb0/0xb0 [ 82.567683][ T9302] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 82.573832][ T9302] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 82.579360][ T9302] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 82.585450][ T9302] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 82.590921][ T9302] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 82.596530][ T9302] ? do_syscall_64+0x26/0x790 [ 82.601207][ T9302] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 82.607278][ T9302] __x64_sys_sendto+0xe1/0x1a0 [ 82.612064][ T9302] do_syscall_64+0xfa/0x790 [ 82.616584][ T9302] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 82.622467][ T9302] RIP: 0033:0x442099 [ 82.626348][ T9302] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 5b 10 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 82.646357][ T9302] RSP: 002b:00007ffc0b0f0078 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 82.655096][ T9302] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000442099 [ 82.663054][ T9302] RDX: 000000000000000e RSI: 0000000020000100 RDI: 0000000000000003 [ 82.671015][ T9302] RBP: 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 [ 82.678978][ T9302] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 82.686956][ T9302] R13: 0000000000403610 R14: 0000000000000000 R15: 0000000000000000 [ 82.696324][ T9302] Kernel Offset: disabled [ 82.700708][ T9302] Rebooting in 86400 seconds..