[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 56.426890][ T26] audit: type=1800 audit(1559593745.376:25): pid=8288 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 56.461783][ T26] audit: type=1800 audit(1559593745.376:26): pid=8288 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 56.482814][ T26] audit: type=1800 audit(1559593745.376:27): pid=8288 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 '10.128.0.27' (ECDSA) to the list of known hosts. syzkaller login: [ 68.826080][ T8440] IPVS: ftp: loaded support on port[0] = 21 [ 68.888507][ T8440] chnl_net:caif_netlink_parms(): no params data found [ 68.914135][ T8440] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.921945][ T8440] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.929645][ T8440] device bridge_slave_0 entered promiscuous mode [ 68.937485][ T8440] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.944566][ T8440] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.952273][ T8440] device bridge_slave_1 entered promiscuous mode [ 68.967449][ T8440] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 68.976760][ T8440] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 68.994131][ T8440] team0: Port device team_slave_0 added [ 69.001373][ T8440] team0: Port device team_slave_1 added [ 69.079667][ T8440] device hsr_slave_0 entered promiscuous mode [ 69.147714][ T8440] device hsr_slave_1 entered promiscuous mode [ 69.225277][ T8440] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.232467][ T8440] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.240130][ T8440] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.247174][ T8440] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.280462][ T8440] 8021q: adding VLAN 0 to HW filter on device bond0 [ 69.291791][ T2901] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 69.301817][ T2901] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.310133][ T2901] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.319035][ T2901] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 69.330963][ T8440] 8021q: adding VLAN 0 to HW filter on device team0 [ 69.340886][ T3692] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 69.349830][ T3692] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.356948][ T3692] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.368136][ T2901] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 69.376614][ T2901] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.383713][ T2901] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.400902][ T3692] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 69.410428][ T3692] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 69.421931][ T2901] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready executing program [ 69.433130][ T3692] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 69.443976][ T2901] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 69.453808][ T8440] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 69.471368][ T8440] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 69.503832][ T8440] ------------[ cut here ]------------ [ 69.509562][ T8440] hsr_addr_subst_dest: Unknown node [ 69.515157][ T8440] WARNING: CPU: 1 PID: 8440 at net/hsr/hsr_framereg.c:294 hsr_addr_subst_dest+0x382/0x460 [ 69.525030][ T8440] Kernel panic - not syncing: panic_on_warn set ... [ 69.531603][ T8440] CPU: 1 PID: 8440 Comm: syz-executor768 Not tainted 5.2.0-rc2+ #38 [ 69.539557][ T8440] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.549717][ T8440] Call Trace: [ 69.552995][ T8440] dump_stack+0x172/0x1f0 [ 69.557459][ T8440] ? hsr_addr_subst_dest+0x310/0x460 [ 69.562743][ T8440] panic+0x2cb/0x744 [ 69.566626][ T8440] ? __warn_printk+0xf3/0xf3 [ 69.571203][ T8440] ? hsr_addr_subst_dest+0x382/0x460 [ 69.576472][ T8440] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 69.582704][ T8440] ? __warn.cold+0x5/0x4d [ 69.587016][ T8440] ? __warn+0xe8/0x1d0 [ 69.591068][ T8440] ? hsr_addr_subst_dest+0x382/0x460 [ 69.596331][ T8440] __warn.cold+0x20/0x4d [ 69.600556][ T8440] ? vprintk_emit+0x1ea/0x700 [ 69.605214][ T8440] ? hsr_addr_subst_dest+0x382/0x460 [ 69.610479][ T8440] report_bug+0x263/0x2b0 [ 69.614787][ T8440] do_error_trap+0x11b/0x200 [ 69.619359][ T8440] do_invalid_op+0x37/0x50 [ 69.623758][ T8440] ? hsr_addr_subst_dest+0x382/0x460 [ 69.629140][ T8440] invalid_op+0x14/0x20 [ 69.633429][ T8440] RIP: 0010:hsr_addr_subst_dest+0x382/0x460 [ 69.639305][ T8440] Code: 89 de e8 61 96 5e fa 84 db 75 d3 e8 18 95 5e fa 48 c7 c6 e0 95 21 88 48 c7 c7 a0 95 21 88 c6 05 b8 b1 6a 02 01 e8 7c da 30 fa <0f> 0b eb b0 e8 f5 94 5e fa 0f b6 1d a4 b1 6a 02 31 ff 89 de e8 25 [ 69.659002][ T8440] RSP: 0018:ffff88809969f5e0 EFLAGS: 00010286 [ 69.665049][ T8440] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 69.673014][ T8440] RDX: 0000000000000000 RSI: ffffffff815ac7e6 RDI: ffffed10132d3eae [ 69.680970][ T8440] RBP: ffff88809969f620 R08: ffff8880a0202540 R09: ffffed1015d240f1 [ 69.688923][ T8440] R10: ffffed1015d240f0 R11: ffff8880ae920787 R12: ffff8880834ecba0 [ 69.696998][ T8440] R13: 00000000aaaaaaaa R14: 000000000485ef34 R15: 00000000000024aa [ 69.704977][ T8440] ? vprintk_func+0x86/0x189 [ 69.709559][ T8440] hsr_forward_skb+0x138b/0x1d30 [ 69.714482][ T8440] hsr_dev_xmit+0x72/0xa0 [ 69.718798][ T8440] dev_hard_start_xmit+0x18a/0x950 [ 69.723894][ T8440] __dev_queue_xmit+0x2a8e/0x36b0 [ 69.728899][ T8440] ? __might_fault+0x12b/0x1e0 [ 69.733640][ T8440] ? find_held_lock+0x35/0x130 [ 69.738388][ T8440] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 69.743675][ T8440] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 69.749908][ T8440] ? iov_iter_advance+0x295/0xf70 [ 69.754931][ T8440] dev_queue_xmit+0x18/0x20 [ 69.759428][ T8440] ? dev_queue_xmit+0x18/0x20 [ 69.764118][ T8440] pppoe_sendmsg+0x654/0x7e0 [ 69.768704][ T8440] ? ether_setup+0x2d0/0x2d0 [ 69.773291][ T8440] ? pppoe_getname+0x120/0x120 [ 69.778037][ T8440] ? apparmor_socket_sendmsg+0x2a/0x30 [ 69.783477][ T8440] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 69.789911][ T8440] ? security_socket_sendmsg+0x8d/0xc0 [ 69.795356][ T8440] ? pppoe_getname+0x120/0x120 [ 69.800110][ T8440] sock_sendmsg+0xd7/0x130 [ 69.804509][ T8440] ___sys_sendmsg+0x3e2/0x920 [ 69.809169][ T8440] ? copy_msghdr_from_user+0x430/0x430 [ 69.814630][ T8440] ? mark_held_locks+0xf0/0xf0 [ 69.819385][ T8440] ? reacquire_held_locks+0xfa/0x520 [ 69.824659][ T8440] ? release_sock+0x156/0x1c0 [ 69.829328][ T8440] ? find_held_lock+0x35/0x130 [ 69.834233][ T8440] ? release_sock+0x156/0x1c0 [ 69.839009][ T8440] ? __local_bh_enable_ip+0x15a/0x270 [ 69.844376][ T8440] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 69.850612][ T8440] ? __fget_light+0x1a9/0x230 [ 69.855269][ T8440] ? __fdget+0x1b/0x20 [ 69.859323][ T8440] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 69.865622][ T8440] ? sockfd_lookup_light+0xcb/0x180 [ 69.870808][ T8440] __sys_sendmmsg+0x1bf/0x4d0 [ 69.875597][ T8440] ? __ia32_sys_sendmsg+0xb0/0xb0 [ 69.880716][ T8440] ? __sys_connect+0x12d/0x330 [ 69.885460][ T8440] ? __ia32_sys_accept+0xb0/0xb0 [ 69.890388][ T8440] ? kasan_check_write+0x14/0x20 [ 69.895306][ T8440] ? up_read+0xc4/0x200 [ 69.899445][ T8440] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 69.904986][ T8440] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 69.910443][ T8440] ? do_syscall_64+0x26/0x680 [ 69.915104][ T8440] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 69.921156][ T8440] ? do_syscall_64+0x26/0x680 [ 69.925816][ T8440] __x64_sys_sendmmsg+0x9d/0x100 [ 69.930871][ T8440] do_syscall_64+0xfd/0x680 [ 69.935359][ T8440] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 69.941345][ T8440] RIP: 0033:0x441a39 [ 69.945230][ T8440] 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 [ 69.964930][ T8440] RSP: 002b:00007ffcc64f64d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 69.973392][ T8440] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441a39 [ 69.981362][ T8440] RDX: 0000000000000003 RSI: 00000000200035c0 RDI: 0000000000000003 [ 69.989322][ T8440] RBP: 00000000004a90d0 R08: 0000000001bbbbbb R09: 0000000001bbbbbb [ 69.997273][ T8440] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402f80 [ 70.005224][ T8440] R13: 0000000000403010 R14: 0000000000000000 R15: 0000000000000000 [ 70.014583][ T8440] Kernel Offset: disabled [ 70.018985][ T8440] Rebooting in 86400 seconds..