[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 59.487577][ T25] audit: type=1800 audit(1575298084.858:25): pid=8790 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 59.507594][ T25] audit: type=1800 audit(1575298084.858:26): pid=8790 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 59.562007][ T25] audit: type=1800 audit(1575298084.868:27): pid=8790 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 '10.128.0.123' (ECDSA) to the list of known hosts. 2019/12/02 14:48:13 parsed 1 programs 2019/12/02 14:48:15 executed programs: 0 syzkaller login: [ 70.428987][ T8958] IPVS: ftp: loaded support on port[0] = 21 [ 70.497760][ T8958] chnl_net:caif_netlink_parms(): no params data found [ 70.529263][ T8958] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.537050][ T8958] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.546122][ T8958] device bridge_slave_0 entered promiscuous mode [ 70.554481][ T8958] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.561699][ T8958] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.570025][ T8958] device bridge_slave_1 entered promiscuous mode [ 70.589372][ T8958] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.600035][ T8958] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 70.621029][ T8958] team0: Port device team_slave_0 added [ 70.628302][ T8958] team0: Port device team_slave_1 added [ 70.707250][ T8958] device hsr_slave_0 entered promiscuous mode [ 70.785315][ T8958] device hsr_slave_1 entered promiscuous mode [ 70.858658][ T8958] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 70.907152][ T8958] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 70.958562][ T8958] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 71.007316][ T8958] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 71.066000][ T8958] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.073236][ T8958] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.081038][ T8958] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.088138][ T8958] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.123473][ T8958] 8021q: adding VLAN 0 to HW filter on device bond0 [ 71.139020][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 71.159880][ T5] bridge0: port 1(bridge_slave_0) entered disabled state [ 71.179292][ T5] bridge0: port 2(bridge_slave_1) entered disabled state [ 71.188597][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 71.200538][ T8958] 8021q: adding VLAN 0 to HW filter on device team0 [ 71.211558][ T3053] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 71.220624][ T3053] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.227733][ T3053] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.239088][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 71.247798][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.254944][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.280103][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 71.289492][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 71.298092][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 71.307234][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 71.315796][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 71.324552][ T8958] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 71.341075][ T3053] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 71.348582][ T3053] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 71.360355][ T8958] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.451794][ T8964] ERROR: Domain ' /sbin/init /etc/init.d/rc /sbin/startpar /etc/init.d/ssh /sbin/start-stop-daemon /usr/sbin/sshd /usr/sbin/sshd /bin/bash /root/syz-execprog /root/syz-executor.0 proc:/self/fd/3' not defined. [ 71.519501][ T8963] ------------[ cut here ]------------ [ 71.525183][ T8963] WARNING: CPU: 0 PID: 8963 at kernel/signal.c:378 task_participate_group_stop+0x200/0x260 [ 71.535150][ T8963] Kernel panic - not syncing: panic_on_warn set ... [ 71.541722][ T8963] CPU: 0 PID: 8963 Comm: 3 Not tainted 5.4.0-syzkaller #0 [ 71.548809][ T8963] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.558850][ T8963] Call Trace: [ 71.562130][ T8963] dump_stack+0x197/0x210 [ 71.566450][ T8963] ? task_participate_group_stop+0x1f0/0x260 [ 71.572412][ T8963] panic+0x2e3/0x75c [ 71.576290][ T8963] ? add_taint.cold+0x16/0x16 [ 71.580947][ T8963] ? printk+0xba/0xed [ 71.584975][ T8963] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 71.590421][ T8963] ? __warn.cold+0x14/0x3e [ 71.594818][ T8963] ? __warn+0xd9/0x1cf [ 71.598868][ T8963] ? task_participate_group_stop+0x200/0x260 [ 71.604833][ T8963] __warn.cold+0x2f/0x3e [ 71.609056][ T8963] ? report_bug.cold+0x63/0xb2 [ 71.613804][ T8963] ? task_participate_group_stop+0x200/0x260 [ 71.619768][ T8963] report_bug+0x289/0x300 [ 71.624081][ T8963] do_error_trap+0x11b/0x200 [ 71.628650][ T8963] do_invalid_op+0x37/0x50 [ 71.633047][ T8963] ? task_participate_group_stop+0x200/0x260 [ 71.639017][ T8963] invalid_op+0x23/0x30 [ 71.643164][ T8963] RIP: 0010:task_participate_group_stop+0x200/0x260 [ 71.649727][ T8963] Code: d0 7c 04 84 d2 75 44 41 89 9d a4 00 00 00 41 bc 01 00 00 00 e9 59 ff ff ff e8 4c d9 2b 00 0f 0b e9 91 fe ff ff e8 40 d9 2b 00 <0f> 0b e9 fe fe ff ff 4c 89 e7 e8 71 2b 69 00 e9 ca fe ff ff 4c 89 [ 71.669678][ T8963] RSP: 0018:ffff8880915afc20 EFLAGS: 00010093 [ 71.675727][ T8963] RAX: ffff88809fcb80c0 RBX: 0000000000000000 RCX: ffffffff81490dfe [ 71.683803][ T8963] RDX: 0000000000000000 RSI: ffffffff81490f10 RDI: 0000000000000005 [ 71.691774][ T8963] RBP: ffff8880915afc40 R08: ffff88809fcb80c0 R09: ffffed10122b5f84 [ 71.699725][ T8963] R10: ffffed10122b5f83 R11: 0000000000000003 R12: ffff8880a1a9c360 [ 71.707675][ T8963] R13: ffff8880a1a9c2c0 R14: 0000000000040000 R15: ffff8880915aff58 [ 71.715642][ T8963] ? task_participate_group_stop+0xee/0x260 [ 71.721514][ T8963] ? task_participate_group_stop+0x200/0x260 [ 71.727476][ T8963] do_signal_stop+0x1e6/0x840 [ 71.732135][ T8963] get_signal+0x101e/0x24f0 [ 71.736637][ T8963] do_signal+0x87/0x1700 [ 71.740872][ T8963] ? setup_sigcontext+0x7d0/0x7d0 [ 71.745881][ T8963] ? exit_to_usermode_loop+0x43/0x380 [ 71.751230][ T8963] ? do_syscall_64+0x676/0x790 [ 71.755977][ T8963] ? exit_to_usermode_loop+0x43/0x380 [ 71.761341][ T8963] ? lockdep_hardirqs_on+0x421/0x5e0 [ 71.766604][ T8963] ? trace_hardirqs_on+0x67/0x240 [ 71.771608][ T8963] exit_to_usermode_loop+0x286/0x380 [ 71.776871][ T8963] do_syscall_64+0x676/0x790 [ 71.781445][ T8963] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 71.787313][ T8963] RIP: 0033:0x324 [ 71.790933][ T8963] Code: Bad RIP value. [ 71.794990][ T8963] RSP: 002b:00007ffe07cc8c40 EFLAGS: 00000200 ORIG_RAX: 000000000000003b [ 71.803389][ T8963] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 71.811349][ T8963] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 71.819479][ T8963] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 71.827497][ T8963] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 71.835530][ T8963] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 71.845216][ T8963] Kernel Offset: disabled [ 71.849622][ T8963] Rebooting in 86400 seconds..