[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 92.447394][ T27] audit: type=1800 audit(1581821570.433:25): pid=9585 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 92.467093][ T27] audit: type=1800 audit(1581821570.433:26): pid=9585 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 92.493321][ T27] audit: type=1800 audit(1581821570.443:27): pid=9585 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 '10.128.0.140' (ECDSA) to the list of known hosts. syzkaller login: [ 103.733920][ T9741] IPVS: ftp: loaded support on port[0] = 21 [ 103.783455][ T9741] chnl_net:caif_netlink_parms(): no params data found [ 103.821239][ T9741] bridge0: port 1(bridge_slave_0) entered blocking state [ 103.829354][ T9741] bridge0: port 1(bridge_slave_0) entered disabled state [ 103.837839][ T9741] device bridge_slave_0 entered promiscuous mode [ 103.846244][ T9741] bridge0: port 2(bridge_slave_1) entered blocking state [ 103.853905][ T9741] bridge0: port 2(bridge_slave_1) entered disabled state [ 103.861733][ T9741] device bridge_slave_1 entered promiscuous mode [ 103.880845][ T9741] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 103.892595][ T9741] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 103.911478][ T9741] team0: Port device team_slave_0 added [ 103.919262][ T9741] team0: Port device team_slave_1 added [ 103.937176][ T9741] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 103.945468][ T9741] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 103.972482][ T9741] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 103.985634][ T9741] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 103.993011][ T9741] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 104.021201][ T9741] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 104.095086][ T9741] device hsr_slave_0 entered promiscuous mode [ 104.132774][ T9741] device hsr_slave_1 entered promiscuous mode [ 104.265224][ T9741] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 104.315189][ T9741] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 104.374583][ T9741] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 104.444960][ T9741] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 104.528644][ T9741] bridge0: port 2(bridge_slave_1) entered blocking state [ 104.536189][ T9741] bridge0: port 2(bridge_slave_1) entered forwarding state [ 104.544610][ T9741] bridge0: port 1(bridge_slave_0) entered blocking state [ 104.552062][ T9741] bridge0: port 1(bridge_slave_0) entered forwarding state [ 104.597573][ T9741] 8021q: adding VLAN 0 to HW filter on device bond0 [ 104.611247][ T2850] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 104.623032][ T2850] bridge0: port 1(bridge_slave_0) entered disabled state [ 104.631798][ T2850] bridge0: port 2(bridge_slave_1) entered disabled state [ 104.641934][ T2850] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 104.655840][ T9741] 8021q: adding VLAN 0 to HW filter on device team0 [ 104.668463][ T3276] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 104.677357][ T3276] bridge0: port 1(bridge_slave_0) entered blocking state [ 104.684858][ T3276] bridge0: port 1(bridge_slave_0) entered forwarding state [ 104.698427][ T2863] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 104.707301][ T2863] bridge0: port 2(bridge_slave_1) entered blocking state [ 104.715652][ T2863] bridge0: port 2(bridge_slave_1) entered forwarding state [ 104.734906][ T3276] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 104.745096][ T3276] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 104.756926][ T2863] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 104.770144][ T3276] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 104.783347][ T2863] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 104.792871][ T2863] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 104.805117][ T9741] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 104.825494][ T3276] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 104.833735][ T3276] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 104.847303][ T9741] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 104.867310][ T2863] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 104.877485][ T2863] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 104.898015][ T9741] device veth0_vlan entered promiscuous mode [ 104.905884][ T3263] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 104.915325][ T3263] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 104.929910][ T9741] device veth1_vlan entered promiscuous mode [ 104.937930][ T3276] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 104.946293][ T3276] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 104.955583][ T3276] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 104.978733][ T2863] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 104.987969][ T2863] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 104.997237][ T2863] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 105.009392][ T9741] device veth0_macvtap entered promiscuous mode [ 105.021059][ T9741] device veth1_macvtap entered promiscuous mode [ 105.039828][ T9741] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 105.047888][ T3276] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 105.056870][ T3276] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 105.065648][ T3276] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 105.074622][ T3276] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 105.086951][ T9741] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 105.095560][ T2863] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 105.105302][ T2863] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 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 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 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 [ 106.233346][ T3274] divide error: 0000 [#1] PREEMPT SMP KASAN [ 106.239586][ T3274] CPU: 0 PID: 3274 Comm: kworker/0:117 Not tainted 5.6.0-rc1-syzkaller #0 [ 106.248559][ T3274] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 106.259113][ T3274] Workqueue: wg-crypt-wg0 wg_packet_encrypt_worker [ 106.265975][ T3274] RIP: 0010:encrypt_packet+0xf8/0x920 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 [ 106.271367][ T3274] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 49 06 00 00 8b 4b 3c 44 89 f0 31 d2 48 89 df f1 44 8d 62 0f 41 83 e4 f0 44 39 e1 44 0f 46 e1 41 29 d4 45 8d [ 106.291846][ T3274] RSP: 0018:ffffc900023f77a8 EFLAGS: 00010246 [ 106.298068][ T3274] RAX: 0000000000000000 RBX: ffff8880a95f5c00 RCX: 0000000000000000 [ 106.306289][ T3274] RDX: 0000000000000000 RSI: ffffffff84ba0f9f RDI: ffff8880a95f5c00 [ 106.314689][ T3274] RBP: ffffc900023f7c08 R08: 1ffffffff16a3385 R09: fffffbfff16a3386 [ 106.323458][ T3274] R10: fffffbfff16a3385 R11: ffffffff8b519c2f R12: dffffc0000000000 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 [ 106.331531][ T3274] R13: ffffc900023f7be0 R14: 0000000000000000 R15: dffffc0000000000 [ 106.339992][ T3274] FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 106.349116][ T3274] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 106.356015][ T3274] CR2: 00000000006dcf70 CR3: 0000000009a6d000 CR4: 00000000001406f0 [ 106.364040][ T3274] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 106.372415][ T3274] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 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 [ 106.381782][ T3274] Call Trace: [ 106.385083][ T3274] ? __lock_acquire+0x16f2/0x4a00 [ 106.390220][ T3274] ? wg_packet_send_handshake_initiation+0x250/0x250 [ 106.397109][ T3274] ? __kasan_check_read+0x11/0x20 [ 106.402340][ T3274] ? mark_lock+0xc2/0x1220 [ 106.406956][ T3274] ? find_held_lock+0x35/0x130 [ 106.411889][ T3274] ? mark_held_locks+0xa4/0xf0 [ 106.416839][ T3274] ? __local_bh_enable_ip+0x15a/0x270 [ 106.422226][ T3274] ? _raw_write_unlock_bh+0x2c/0x30 [ 106.429076][ T3274] ? __local_bh_enable_ip+0x15a/0x270 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 [ 106.434468][ T3274] ? lockdep_hardirqs_on+0x19e/0x5e0 [ 106.439908][ T3274] ? fib6_walker_unlink+0x126/0x180 [ 106.445135][ T3274] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 106.451457][ T3274] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 106.457019][ T3274] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 106.463288][ T3274] ? lock_downgrade+0x920/0x920 [ 106.468247][ T3274] ? __kasan_check_read+0x11/0x20 [ 106.473521][ T3274] ? mark_lock+0xc2/0x1220 [ 106.477973][ T3274] ? __update_load_avg_se+0x701/0xc10 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 [ 106.483442][ T3274] ? __kasan_check_read+0x11/0x20 [ 106.488750][ T3274] ? __lock_acquire+0x16f2/0x4a00 [ 106.493886][ T3274] ? __kasan_check_read+0x11/0x20 [ 106.499203][ T3274] ? mark_lock+0xc2/0x1220 [ 106.503883][ T3274] ? find_held_lock+0x35/0x130 [ 106.508669][ T3274] ? mark_held_locks+0xa4/0xf0 [ 106.513457][ T3274] ? __local_bh_enable_ip+0x15a/0x270 [ 106.518857][ T3274] ? _raw_spin_unlock_bh+0x2c/0x30 [ 106.524170][ T3274] ? __local_bh_enable_ip+0x15a/0x270 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 [ 106.529857][ T3274] ? lockdep_hardirqs_on+0x421/0x5e0 [ 106.535307][ T3274] ? wg_packet_encrypt_worker+0x2c6/0xe00 [ 106.541167][ T3274] ? trace_hardirqs_on+0x67/0x240 [ 106.546465][ T3274] ? wg_packet_encrypt_worker+0x2c6/0xe00 [ 106.553166][ T3274] ? __local_bh_enable_ip+0x15a/0x270 [ 106.558565][ T3274] wg_packet_encrypt_worker+0x33f/0xe00 [ 106.564225][ T3274] ? wg_packet_tx_worker+0xc00/0xc00 [ 106.569810][ T3274] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 106.575663][ T3274] ? rcu_read_lock_any_held.part.0+0x50/0x50 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 [ 106.581788][ T3274] ? trace_hardirqs_on+0x67/0x240 [ 106.586934][ T3274] process_one_work+0xa05/0x17a0 [ 106.592245][ T3274] ? mark_held_locks+0xf0/0xf0 [ 106.597033][ T3274] ? pwq_dec_nr_in_flight+0x320/0x320 [ 106.602696][ T3274] ? lock_acquire+0x190/0x410 [ 106.607656][ T3274] worker_thread+0x98/0xe40 [ 106.612322][ T3274] kthread+0x361/0x430 [ 106.616413][ T3274] ? process_one_work+0x17a0/0x17a0 [ 106.621753][ T3274] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 106.627722][ T3274] ret_from_fork+0x24/0x30 executing program executing program executing program executing program executing program executing program executing program [ 106.632152][ T3274] Modules linked in: [ 106.641718][ T3274] ---[ end trace 554e7a2e7927f9c3 ]--- [ 106.647272][ T3274] RIP: 0010:encrypt_packet+0xf8/0x920 [ 106.653195][ T3274] Code: 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 49 06 00 00 8b 4b 3c 44 89 f0 31 d2 48 89 df f1 44 8d 62 0f 41 83 e4 f0 44 39 e1 44 0f 46 e1 41 29 d4 45 8d [ 106.673674][ T3274] RSP: 0018:ffffc900023f77a8 EFLAGS: 00010246 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 106.680254][ T3274] RAX: 0000000000000000 RBX: ffff8880a95f5c00 RCX: 0000000000000000 [ 106.688497][ T3274] RDX: 0000000000000000 RSI: ffffffff84ba0f9f RDI: ffff8880a95f5c00 [ 106.697124][ T3274] RBP: ffffc900023f7c08 R08: 1ffffffff16a3385 R09: fffffbfff16a3386 [ 106.705283][ T3274] R10: fffffbfff16a3385 R11: ffffffff8b519c2f R12: dffffc0000000000 [ 106.714726][ T3274] R13: ffffc900023f7be0 R14: 0000000000000000 R15: dffffc0000000000 [ 106.723314][ T3274] FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 106.732643][ T3274] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 106.739517][ T3274] CR2: 00000000006dcf70 CR3: 00000000a182a000 CR4: 00000000001406f0 [ 106.747958][ T3274] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 106.756239][ T3274] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 106.764323][ T3274] Kernel panic - not syncing: Fatal exception [ 106.772556][ T3274] Kernel Offset: disabled [ 106.777239][ T3274] Rebooting in 86400 seconds..