[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 39.791005] audit: type=1800 audit(1546148152.017:25): pid=7915 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 39.828088] audit: type=1800 audit(1546148152.017:26): pid=7915 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 39.848841] audit: type=1800 audit(1546148152.017:27): pid=7915 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 syzkaller login: [ 44.601060] sshd (8052) used greatest stack depth: 15720 bytes left Warning: Permanently added '10.128.0.59' (ECDSA) to the list of known hosts. [ 51.235853] IPVS: ftp: loaded support on port[0] = 21 [ 51.295610] chnl_net:caif_netlink_parms(): no params data found [ 51.331918] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.338662] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.346081] device bridge_slave_0 entered promiscuous mode [ 51.353655] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.360125] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.367234] device bridge_slave_1 entered promiscuous mode [ 51.388175] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 51.397708] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 51.415361] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 51.423062] team0: Port device team_slave_0 added [ 51.428477] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 51.435781] team0: Port device team_slave_1 added [ 51.441092] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 51.448367] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 51.512125] device hsr_slave_0 entered promiscuous mode [ 51.550028] device hsr_slave_1 entered promiscuous mode [ 51.600357] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 51.607316] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 51.621091] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.627749] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.634813] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.641214] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.674149] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 51.681687] 8021q: adding VLAN 0 to HW filter on device bond0 [ 51.689850] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 51.698188] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 51.708108] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.715607] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.722860] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 51.733728] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 51.740077] 8021q: adding VLAN 0 to HW filter on device team0 [ 51.751517] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 51.759094] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.765516] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.772410] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 51.780142] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.786573] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.802552] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 51.811429] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 51.823037] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 51.835674] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 51.845682] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 51.856099] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 51.863861] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready executing program [ 51.872106] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 51.879739] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 51.891721] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 51.902181] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 51.914545] ------------[ cut here ]------------ [ 51.919354] HSR: VLAN not yet supported [ 51.919815] WARNING: CPU: 0 PID: 8067 at net/hsr/hsr_forward.c:336 hsr_forward_skb+0x2196/0x28a0 [ 51.932669] Kernel panic - not syncing: panic_on_warn set ... [ 51.938571] CPU: 0 PID: 8067 Comm: syz-executor245 Not tainted 4.20.0+ #396 [ 51.945653] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.954988] Call Trace: [ 51.957558] dump_stack+0x1d3/0x2c6 [ 51.961175] ? dump_stack_print_info.cold.1+0x20/0x20 [ 51.966356] panic+0x2ad/0x55f [ 51.969545] ? add_taint.cold.5+0x16/0x16 [ 51.973685] ? __warn.cold.8+0x5/0x52 [ 51.977469] ? __warn+0xe8/0x1d0 [ 51.980823] ? hsr_forward_skb+0x2196/0x28a0 [ 51.985210] __warn.cold.8+0x20/0x52 [ 51.988903] ? rcu_softirq_qs+0x20/0x20 [ 51.992860] ? hsr_forward_skb+0x2196/0x28a0 [ 51.997259] report_bug+0x254/0x2d0 [ 52.000875] do_error_trap+0x11b/0x200 [ 52.004749] do_invalid_op+0x36/0x40 [ 52.008446] ? hsr_forward_skb+0x2196/0x28a0 [ 52.012841] invalid_op+0x14/0x20 [ 52.016279] RIP: 0010:hsr_forward_skb+0x2196/0x28a0 [ 52.021282] Code: e7 e8 9e 2a ff ff e9 8f f3 ff ff 48 89 85 b0 fe ff ff e8 8d d5 95 f9 48 c7 c7 a0 0e fa 88 c6 05 25 bc 4a 02 01 e8 0a 1b 5f f9 <0f> 0b 48 8b 85 a8 fe ff ff 48 b9 00 00 00 00 00 fc ff df 48 89 c2 [ 52.040175] RSP: 0018:ffff88809e3aeb28 EFLAGS: 00010282 [ 52.045530] RAX: 0000000000000000 RBX: ffff8880a8860900 RCX: 0000000000000000 [ 52.052784] RDX: 0000000000000000 RSI: ffffffff81683f55 RDI: 0000000000000006 [ 52.060038] RBP: ffff88809e3aecb8 R08: ffff8880a53260c0 R09: 0000000000000000 [ 52.067296] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 52.074559] R13: ffff8880907f5a80 R14: ffff8880a88609b6 R15: ffff88809e3aec90 [ 52.081834] ? vprintk_func+0x85/0x181 [ 52.085712] ? hsr_forward_skb+0x2196/0x28a0 [ 52.090107] ? rcu_read_unlock_special+0x370/0x370 [ 52.095029] ? find_held_lock+0x36/0x1c0 [ 52.099081] ? hsr_del_port+0x480/0x480 [ 52.103040] ? rcu_read_unlock+0x5e/0xa0 [ 52.107089] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 52.112113] ? hsr_netdev_notify+0x1070/0x1070 [ 52.116693] ? __lock_is_held+0xb5/0x140 [ 52.120743] hsr_dev_xmit+0x71/0xa0 [ 52.124357] dev_hard_start_xmit+0x286/0xc80 [ 52.128773] ? dev_direct_xmit+0x6a0/0x6a0 [ 52.133001] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 52.138526] ? netif_skb_features+0x681/0xb50 [ 52.143009] ? skb_flow_dissect_tunnel_info+0xd80/0xd80 [ 52.148381] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 52.153909] ? validate_xmit_xfrm+0x41c/0xef0 [ 52.158396] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.163925] ? validate_xmit_skb+0x849/0xf70 [ 52.168328] ? netif_skb_features+0xb50/0xb50 [ 52.172836] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.178363] ? check_preemption_disabled+0x48/0x280 [ 52.183389] ? check_preemption_disabled+0x48/0x280 [ 52.188399] __dev_queue_xmit+0x2f62/0x3ac0 [ 52.192711] ? kasan_kmalloc+0xcb/0xd0 [ 52.196596] ? netdev_pick_tx+0x300/0x300 [ 52.200738] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.206279] ? __alloc_skb+0x4bd/0x760 [ 52.210163] ? print_usage_bug+0xc0/0xc0 [ 52.214216] ? skb_scrub_packet+0x440/0x440 [ 52.218544] ? mark_held_locks+0x130/0x130 [ 52.222767] ? find_held_lock+0x36/0x1c0 [ 52.226832] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.232359] ? refcount_add_not_zero_checked+0x21e/0x330 [ 52.237804] ? refcount_dec_if_one+0x180/0x180 [ 52.242383] ? alloc_skb_with_frags+0x508/0x7c0 [ 52.247048] ? pagevec_lru_move_fn+0x259/0x350 [ 52.251625] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 52.257077] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 52.262609] ? refcount_add_checked+0x2f/0x70 [ 52.267100] ? skb_set_owner_w+0x21d/0x320 [ 52.271335] ? sock_alloc_send_pskb+0x7bb/0xab0 [ 52.276001] ? __lru_cache_add+0x2ff/0x4e0 [ 52.280234] ? sock_wmalloc+0x1f0/0x1f0 [ 52.284200] ? dev_get_by_index+0xf0/0x1c0 [ 52.288423] ? lock_downgrade+0x900/0x900 [ 52.292558] ? check_preemption_disabled+0x48/0x280 [ 52.297567] ? kasan_check_read+0x11/0x20 [ 52.301703] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 52.306964] ? mark_held_locks+0x130/0x130 [ 52.311188] ? rcu_read_unlock_special+0x370/0x370 [ 52.316107] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.321641] ? skb_copy_datagram_from_iter+0x445/0x650 [ 52.326909] ? memcpy+0x45/0x50 [ 52.330184] dev_queue_xmit+0x17/0x20 [ 52.333968] ? dev_queue_xmit+0x17/0x20 [ 52.337931] packet_sendmsg+0x298a/0x6ad0 [ 52.342066] ? __lock_acquire+0x62f/0x4c20 [ 52.346299] ? __this_cpu_preempt_check+0x1c/0x20 [ 52.351140] ? mark_held_locks+0xe0/0x130 [ 52.355284] ? packet_getname+0x5f0/0x5f0 [ 52.359421] ? aa_profile_af_perm+0x410/0x410 [ 52.363908] ? ___might_sleep+0x1ed/0x300 [ 52.368043] ? lock_downgrade+0x900/0x900 [ 52.372177] ? finish_task_switch+0x360/0x910 [ 52.376657] ? lock_release+0xa00/0xa00 [ 52.380619] ? arch_local_save_flags+0x40/0x40 [ 52.385192] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 52.390110] ? aa_sk_perm+0x22b/0x8e0 [ 52.393900] ? import_iovec+0x178/0x2d0 [ 52.397863] ? aa_af_perm+0x5a0/0x5a0 [ 52.401681] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 52.407211] ? aa_sock_msg_perm.isra.14+0xba/0x160 [ 52.412138] ? apparmor_socket_sendmsg+0x29/0x30 [ 52.416888] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.422414] ? security_socket_sendmsg+0x94/0xc0 [ 52.427169] ? packet_getname+0x5f0/0x5f0 [ 52.431307] sock_sendmsg+0xd5/0x120 [ 52.435026] ___sys_sendmsg+0x51d/0x930 [ 52.438990] ? copy_msghdr_from_user+0x580/0x580 [ 52.443729] ? _copy_to_user+0xc8/0x110 [ 52.447710] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 52.453240] ? sock_do_ioctl+0x110/0x420 [ 52.457297] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.462823] ? __fget_light+0x2e9/0x430 [ 52.466799] ? fget_raw+0x20/0x20 [ 52.470248] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 52.475428] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 52.480951] ? sockfd_lookup_light+0xc5/0x160 [ 52.485430] __sys_sendmmsg+0x246/0x6d0 [ 52.489395] ? __ia32_sys_sendmsg+0xb0/0xb0 [ 52.493772] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.499296] ? do_vfs_ioctl+0x201/0x1790 [ 52.503342] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 52.508604] ? ioctl_preallocate+0x300/0x300 [ 52.513000] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.518520] ? __fget_light+0x2e9/0x430 [ 52.522488] ? do_syscall_64+0x9a/0x820 [ 52.526443] ? do_syscall_64+0x9a/0x820 [ 52.530400] ? lockdep_hardirqs_on+0x421/0x5c0 [ 52.534982] ? trace_hardirqs_on+0xbd/0x310 [ 52.539289] ? security_file_ioctl+0x94/0xc0 [ 52.543686] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.549032] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 52.554471] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.559995] __x64_sys_sendmmsg+0x9d/0x100 [ 52.564217] do_syscall_64+0x1b9/0x820 [ 52.568092] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 52.573444] ? syscall_return_slowpath+0x5e0/0x5e0 [ 52.578355] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 52.583202] ? trace_hardirqs_on_caller+0x310/0x310 [ 52.588206] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 52.593209] ? prepare_exit_to_usermode+0x291/0x3b0 [ 52.598214] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 52.603052] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.608228] RIP: 0033:0x4418a9 [ 52.611406] 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 bb 10 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 52.630296] RSP: 002b:00007ffcd36b1858 EFLAGS: 00000213 ORIG_RAX: 0000000000000133 [ 52.638007] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00000000004418a9 [ 52.645285] RDX: 0000000000000300 RSI: 0000000020008a80 RDI: 0000000000000003 [ 52.652560] RBP: 0000000000000003 R08: 0000000001bbbbbb R09: 0000000001bbbbbb [ 52.659819] R10: 0000000000000000 R11: 0000000000000213 R12: 00007ffcd36b18a0 [ 52.667099] R13: 00007ffcd36b1890 R14: 0000000000000000 R15: 0000000000000000 [ 52.675440] Kernel Offset: disabled [ 52.679125] Rebooting in 86400 seconds..