[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 66.843882][ T27] audit: type=1800 audit(1575920521.619:25): pid=8839 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 66.872289][ T27] audit: type=1800 audit(1575920521.619:26): pid=8839 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 66.915361][ T27] audit: type=1800 audit(1575920521.619:27): pid=8839 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 '10.128.0.236' (ECDSA) to the list of known hosts. syzkaller login: [ 78.094558][ T8995] IPVS: ftp: loaded support on port[0] = 21 [ 78.158778][ T8995] chnl_net:caif_netlink_parms(): no params data found [ 78.187970][ T8995] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.195680][ T8995] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.203684][ T8995] device bridge_slave_0 entered promiscuous mode [ 78.212041][ T8995] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.219333][ T8995] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.227042][ T8995] device bridge_slave_1 entered promiscuous mode [ 78.244306][ T8995] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 78.255123][ T8995] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 78.275067][ T8995] team0: Port device team_slave_0 added [ 78.283021][ T8995] team0: Port device team_slave_1 added [ 78.364334][ T8995] device hsr_slave_0 entered promiscuous mode [ 78.452867][ T8995] device hsr_slave_1 entered promiscuous mode [ 78.546052][ T8995] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 78.605361][ T8995] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 78.674492][ T8995] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 78.725074][ T8995] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 78.823094][ T8995] bridge0: port 2(bridge_slave_1) entered blocking state [ 78.830280][ T8995] bridge0: port 2(bridge_slave_1) entered forwarding state [ 78.838294][ T8995] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.845406][ T8995] bridge0: port 1(bridge_slave_0) entered forwarding state [ 78.886018][ T8995] 8021q: adding VLAN 0 to HW filter on device bond0 [ 78.899284][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 78.920786][ T17] bridge0: port 1(bridge_slave_0) entered disabled state [ 78.939423][ T17] bridge0: port 2(bridge_slave_1) entered disabled state [ 78.948421][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 78.960570][ T8995] 8021q: adding VLAN 0 to HW filter on device team0 [ 78.971397][ T3699] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 78.980710][ T3699] bridge0: port 1(bridge_slave_0) entered blocking state [ 78.987915][ T3699] bridge0: port 1(bridge_slave_0) entered forwarding state [ 79.002743][ T8997] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 79.011182][ T8997] bridge0: port 2(bridge_slave_1) entered blocking state [ 79.018273][ T8997] bridge0: port 2(bridge_slave_1) entered forwarding state [ 79.039920][ T8995] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 79.051397][ T8995] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 79.066337][ T3699] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 79.075548][ T3699] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 79.084798][ T3699] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 79.093511][ T3699] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 79.101839][ T3699] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 79.110071][ T3699] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 79.127722][ T8997] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 79.135142][ T8997] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 79.149185][ T8995] 8021q: adding VLAN 0 to HW filter on device batadv0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 82.382228][ T3699] ------------[ cut here ]------------ [ 82.387869][ T3699] AppArmor WARN aa_sock_msg_perm: ((!sock)): [ 82.388157][ T3699] WARNING: CPU: 0 PID: 3699 at security/apparmor/lsm.c:933 aa_sock_msg_perm.isra.0+0xdd/0x170 [ 82.404432][ T3699] Kernel panic - not syncing: panic_on_warn set ... [ 82.411034][ T3699] CPU: 0 PID: 3699 Comm: kworker/0:2 Not tainted 5.5.0-rc1-next-20191209-syzkaller #0 [ 82.420560][ T3699] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.430615][ T3699] Workqueue: krxrpcd rxrpc_peer_keepalive_worker [ 82.436940][ T3699] Call Trace: [ 82.440325][ T3699] dump_stack+0x197/0x210 [ 82.444644][ T3699] ? aa_sock_msg_perm.isra.0+0x40/0x170 [ 82.450173][ T3699] panic+0x2e3/0x75c [ 82.454069][ T3699] ? add_taint.cold+0x16/0x16 [ 82.458757][ T3699] ? __kasan_check_write+0x14/0x20 [ 82.463906][ T3699] ? __warn.cold+0x14/0x3e [ 82.468306][ T3699] ? __warn+0xd9/0x1cf [ 82.472377][ T3699] ? aa_sock_msg_perm.isra.0+0xdd/0x170 [ 82.477917][ T3699] __warn.cold+0x2f/0x3e [ 82.482152][ T3699] ? aa_sock_msg_perm.isra.0+0xdd/0x170 [ 82.487702][ T3699] report_bug+0x289/0x300 [ 82.492041][ T3699] do_error_trap+0x11b/0x200 [ 82.496640][ T3699] do_invalid_op+0x37/0x50 [ 82.501062][ T3699] ? aa_sock_msg_perm.isra.0+0xdd/0x170 [ 82.506609][ T3699] invalid_op+0x23/0x30 [ 82.510758][ T3699] RIP: 0010:aa_sock_msg_perm.isra.0+0xdd/0x170 [ 82.516905][ T3699] Code: 89 ef e8 66 70 03 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 c6 d2 17 fe 48 c7 c6 20 56 6a 88 48 c7 c7 60 40 6a 88 e8 c2 7e e8 fd <0f> 0b e9 43 ff ff ff e8 a7 d2 17 fe 48 c7 c6 20 56 6a 88 48 c7 c7 [ 82.536729][ T3699] RSP: 0018:ffffc9000c51f9b0 EFLAGS: 00010286 [ 82.542780][ T3699] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 82.551064][ T3699] RDX: 0000000000000000 RSI: ffffffff815e8576 RDI: fffff520018a3f28 [ 82.559072][ T3699] RBP: ffffc9000c51f9d8 R08: ffff88809a9c2200 R09: fffffbfff1659dbd [ 82.567038][ T3699] R10: fffffbfff1659dbc R11: ffffffff8b2cede7 R12: ffffc9000c51fb20 [ 82.575001][ T3699] R13: ffffffff886a4500 R14: 0000000000000002 R15: 000000000000001d [ 82.583047][ T3699] ? vprintk_func+0x86/0x189 [ 82.587639][ T3699] apparmor_socket_sendmsg+0x2a/0x30 [ 82.592923][ T3699] security_socket_sendmsg+0x77/0xc0 [ 82.598211][ T3699] sock_sendmsg+0x45/0x130 [ 82.602627][ T3699] kernel_sendmsg+0x44/0x50 [ 82.607125][ T3699] rxrpc_send_keepalive+0x1ff/0x940 [ 82.612314][ T3699] ? rxrpc_reject_packets+0xab0/0xab0 [ 82.617683][ T3699] ? _raw_spin_unlock_bh+0x2c/0x30 [ 82.622778][ T3699] ? __local_bh_enable_ip+0x15a/0x270 [ 82.628154][ T3699] ? lockdep_hardirqs_on+0x421/0x5e0 [ 82.633447][ T3699] ? rxrpc_peer_keepalive_worker+0x62e/0xd02 [ 82.639484][ T3699] ? __local_bh_enable_ip+0x15a/0x270 [ 82.644857][ T3699] rxrpc_peer_keepalive_worker+0x7be/0xd02 [ 82.650653][ T3699] ? rxrpc_peer_add_rtt+0x650/0x650 [ 82.655887][ T3699] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 82.661449][ T3699] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 82.667435][ T3699] ? trace_hardirqs_on+0x67/0x240 [ 82.672465][ T3699] process_one_work+0x9af/0x1740 [ 82.677407][ T3699] ? pwq_dec_nr_in_flight+0x320/0x320 [ 82.682893][ T3699] ? lock_acquire+0x190/0x410 [ 82.687587][ T3699] worker_thread+0x98/0xe40 [ 82.692087][ T3699] ? trace_hardirqs_on+0x67/0x240 [ 82.697115][ T3699] kthread+0x361/0x430 [ 82.701174][ T3699] ? process_one_work+0x1740/0x1740 [ 82.706370][ T3699] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 82.712101][ T3699] ret_from_fork+0x24/0x30 [ 82.718105][ T3699] Kernel Offset: disabled [ 82.722508][ T3699] Rebooting in 86400 seconds..