[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [ 100.266637][ T27] audit: type=1400 audit(1582112067.281:37): avc: denied { watch } for pid=10589 comm="restorecond" path="/root/.ssh" dev="sda1" ino=16179 scontext=system_u:system_r:kernel_t:s0 tcontext=unconfined_u:object_r:ssh_home_t:s0 tclass=dir permissive=1 [....] Starting file context maintaining daemon: restorecond[?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: [ 104.116017][ T27] kauditd_printk_skb: 3 callbacks suppressed [ 104.116031][ T27] audit: type=1400 audit(1582112071.131:41): avc: denied { map } for pid=10676 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.136' (ECDSA) to the list of known hosts. [ 110.984949][ T27] audit: type=1400 audit(1582112078.001:42): avc: denied { map } for pid=10688 comm="syz-executor680" path="/root/syz-executor680208763" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 111.009506][T10689] IPVS: ftp: loaded support on port[0] = 21 [ 111.065398][T10689] chnl_net:caif_netlink_parms(): no params data found [ 111.104173][T10689] bridge0: port 1(bridge_slave_0) entered blocking state [ 111.111972][T10689] bridge0: port 1(bridge_slave_0) entered disabled state [ 111.120081][T10689] device bridge_slave_0 entered promiscuous mode [ 111.130120][T10689] bridge0: port 2(bridge_slave_1) entered blocking state [ 111.137417][T10689] bridge0: port 2(bridge_slave_1) entered disabled state [ 111.145545][T10689] device bridge_slave_1 entered promiscuous mode [ 111.164598][T10689] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 111.176380][T10689] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 111.197089][T10689] team0: Port device team_slave_0 added [ 111.205121][T10689] team0: Port device team_slave_1 added [ 111.221713][T10689] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 111.228787][T10689] 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. [ 111.255054][T10689] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 111.268386][T10689] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 111.275656][T10689] 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. [ 111.302145][T10689] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 111.363888][T10689] device hsr_slave_0 entered promiscuous mode [ 111.432179][T10689] device hsr_slave_1 entered promiscuous mode [ 111.568100][ T27] audit: type=1400 audit(1582112078.581:43): avc: denied { create } for pid=10689 comm="syz-executor680" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 111.595877][T10689] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 111.603652][ T27] audit: type=1400 audit(1582112078.621:44): avc: denied { write } for pid=10689 comm="syz-executor680" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 111.629342][ T27] audit: type=1400 audit(1582112078.621:45): avc: denied { read } for pid=10689 comm="syz-executor680" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 111.636341][T10689] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 111.714557][T10689] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 111.774815][T10689] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 111.840261][T10689] bridge0: port 2(bridge_slave_1) entered blocking state [ 111.847672][T10689] bridge0: port 2(bridge_slave_1) entered forwarding state [ 111.855723][T10689] bridge0: port 1(bridge_slave_0) entered blocking state [ 111.862946][T10689] bridge0: port 1(bridge_slave_0) entered forwarding state [ 111.916874][T10689] 8021q: adding VLAN 0 to HW filter on device bond0 [ 111.932065][ T3201] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 111.943688][ T3201] bridge0: port 1(bridge_slave_0) entered disabled state [ 111.952768][ T3201] bridge0: port 2(bridge_slave_1) entered disabled state [ 111.960973][ T3201] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 111.975680][T10689] 8021q: adding VLAN 0 to HW filter on device team0 [ 111.987754][ T2791] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 111.997905][ T2791] bridge0: port 1(bridge_slave_0) entered blocking state [ 112.005187][ T2791] bridge0: port 1(bridge_slave_0) entered forwarding state [ 112.021966][ T2791] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 112.030494][ T2791] bridge0: port 2(bridge_slave_1) entered blocking state [ 112.037654][ T2791] bridge0: port 2(bridge_slave_1) entered forwarding state [ 112.056403][ T3201] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 112.066037][ T3201] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 112.077884][ T2791] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 112.088182][ T2791] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 112.107309][T10689] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 112.118652][T10689] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 112.132585][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 112.141095][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 112.150604][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 112.159808][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 112.168757][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 112.193254][ T3201] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 112.200674][ T3201] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 112.216923][T10689] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 112.238753][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 112.248567][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 112.272539][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 112.280818][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 112.290650][ T2791] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 112.298867][ T2791] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 112.307717][T10689] device veth0_vlan entered promiscuous mode [ 112.323552][T10689] device veth1_vlan entered promiscuous mode [ 112.349945][ T3201] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 112.358971][ T3201] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 112.367263][ T3201] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 112.376110][ T3201] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 112.387270][T10689] device veth0_macvtap entered promiscuous mode [ 112.398637][T10689] device veth1_macvtap entered promiscuous mode [ 112.420132][T10689] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 112.428175][ T2791] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 112.437725][ T2791] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 112.445922][ T2791] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 112.454676][ T2791] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 112.466652][T10689] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 112.474716][ T2791] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 112.483745][ T2791] 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 [ 113.672678][ T12] divide error: 0000 [#1] PREEMPT SMP KASAN [ 113.678764][ T12] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.6.0-rc2-syzkaller #0 [ 113.686911][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 113.696978][ T12] Workqueue: wg-crypt-wg0 wg_packet_encrypt_worker [ 113.703475][ T12] RIP: 0010:encrypt_packet+0xf8/0x920 [ 113.708971][ T12] 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 [ 113.728575][ T12] RSP: 0018:ffffc90000d2f7a8 EFLAGS: 00010246 [ 113.734647][ T12] RAX: 0000000000000000 RBX: ffff8880a8a6e440 RCX: 0000000000000000 [ 113.742620][ T12] RDX: 0000000000000000 RSI: ffffffff84ba491f RDI: ffff8880a8a6e440 [ 113.750597][ T12] RBP: ffffc90000d2fc08 R08: 1ffffffff16a3385 R09: fffffbfff16a3386 [ 113.758588][ T12] R10: fffffbfff16a3385 R11: ffffffff8b519c2f R12: dffffc0000000000 [ 113.766561][ T12] R13: ffffc90000d2fbe0 R14: 0000000000000000 R15: dffffc0000000000 [ 113.774655][ T12] FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 113.783577][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 113.790180][ T12] CR2: 00007ffe724a8c40 CR3: 000000009dd60000 CR4: 00000000001406f0 [ 113.798324][ T12] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 113.806296][ T12] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 113.814436][ T12] Call Trace: [ 113.817745][ T12] ? __lock_acquire+0x16f2/0x4a00 [ 113.822785][ T12] ? __kasan_check_read+0x11/0x20 [ 113.827841][ T12] ? wg_packet_send_handshake_initiation+0x250/0x250 [ 113.834528][ T12] ? __kasan_check_read+0x11/0x20 [ 113.839642][ T12] ? mark_lock+0xc2/0x1220 [ 113.844058][ T12] ? find_held_lock+0x35/0x130 [ 113.848842][ T12] ? mark_held_locks+0xa4/0xf0 [ 113.853608][ T12] ? __local_bh_enable_ip+0x15a/0x270 [ 113.858997][ T12] ? _raw_write_unlock_bh+0x2c/0x30 [ 113.864194][ T12] ? __local_bh_enable_ip+0x15a/0x270 [ 113.869940][ T12] ? lockdep_hardirqs_on+0x19e/0x5e0 [ 113.875240][ T12] ? fib6_walker_unlink+0x126/0x180 [ 113.880445][ T12] ? trace_hardirqs_on+0x67/0x240 [ 113.885471][ T12] ? __rtnl_unlock+0x36/0x90 [ 113.890089][ T12] ? find_held_lock+0x35/0x130 [ 113.894857][ T12] ? __rtnl_unlock+0x36/0x90 [ 113.899465][ T12] ? lock_downgrade+0x920/0x920 [ 113.904324][ T12] ? __kasan_check_read+0x11/0x20 [ 113.909355][ T12] ? mark_lock+0xc2/0x1220 [ 113.913777][ T12] ? mark_lock+0xc2/0x1220 [ 113.918200][ T12] ? __kasan_check_read+0x11/0x20 [ 113.923309][ T12] ? __lock_acquire+0x16f2/0x4a00 [ 113.928529][ T12] ? __lock_acquire+0x16f2/0x4a00 [ 113.933565][ T12] ? wait_for_completion+0x440/0x440 [ 113.938860][ T12] ? __kasan_check_read+0x11/0x20 [ 113.943901][ T12] ? mark_lock+0xc2/0x1220 [ 113.948319][ T12] ? find_held_lock+0x35/0x130 [ 113.953251][ T12] ? mark_held_locks+0xa4/0xf0 [ 113.958130][ T12] ? __local_bh_enable_ip+0x15a/0x270 [ 113.963521][ T12] ? _raw_spin_unlock_bh+0x2c/0x30 [ 113.968629][ T12] ? __local_bh_enable_ip+0x15a/0x270 [ 113.974008][ T12] ? lockdep_hardirqs_on+0x421/0x5e0 [ 113.979317][ T12] ? wg_packet_encrypt_worker+0x2c6/0xe00 [ 113.985059][ T12] ? trace_hardirqs_on+0x67/0x240 [ 113.990108][ T12] ? wg_packet_encrypt_worker+0x2c6/0xe00 [ 113.995853][ T12] ? __local_bh_enable_ip+0x15a/0x270 [ 114.001254][ T12] wg_packet_encrypt_worker+0x33f/0xe00 [ 114.006828][ T12] ? wg_packet_tx_worker+0xc00/0xc00 [ 114.012159][ T12] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 114.017767][ T12] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 114.023782][ T12] ? trace_hardirqs_on+0x67/0x240 [ 114.029005][ T12] process_one_work+0xa05/0x17a0 [ 114.033953][ T12] ? mark_held_locks+0xf0/0xf0 [ 114.038729][ T12] ? pwq_dec_nr_in_flight+0x320/0x320 [ 114.044211][ T12] ? lock_acquire+0x190/0x410 [ 114.048904][ T12] worker_thread+0x98/0xe40 [ 114.053409][ T12] ? trace_hardirqs_on+0x67/0x240 [ 114.058445][ T12] kthread+0x361/0x430 [ 114.062528][ T12] ? process_one_work+0x17a0/0x17a0 [ 114.067725][ T12] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 114.073664][ T12] ret_from_fork+0x24/0x30 [ 114.078430][ T12] Modules linked in: [ 114.089948][ T12] ---[ end trace c9beb00afb20fc0b ]--- [ 114.095884][ T12] RIP: 0010:encrypt_packet+0xf8/0x920 [ 114.101424][ T12] 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 [ 114.121179][ T12] RSP: 0018:ffffc90000d2f7a8 EFLAGS: 00010246 [ 114.127610][ T12] RAX: 0000000000000000 RBX: ffff8880a8a6e440 RCX: 0000000000000000 [ 114.135821][ T12] RDX: 0000000000000000 RSI: ffffffff84ba491f RDI: ffff8880a8a6e440 [ 114.144012][ T12] RBP: ffffc90000d2fc08 R08: 1ffffffff16a3385 R09: fffffbfff16a3386 [ 114.152334][ T12] R10: fffffbfff16a3385 R11: ffffffff8b519c2f R12: dffffc0000000000 [ 114.160363][ T12] R13: ffffc90000d2fbe0 R14: 0000000000000000 R15: dffffc0000000000 [ 114.168591][ T12] FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 114.177663][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 114.184350][ T12] CR2: 00007ffe724a8c40 CR3: 0000000099d7d000 CR4: 00000000001406f0 [ 114.192613][ T12] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 114.200932][ T12] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 114.208973][ T12] Kernel panic - not syncing: Fatal exception [ 114.216528][ T12] Kernel Offset: disabled [ 114.220875][ T12] Rebooting in 86400 seconds..