[ 106.246173][ T27] audit: type=1800 audit(1580357344.841:34): pid=10670 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 106.299593][ T27] audit: type=1800 audit(1580357344.841:35): pid=10670 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 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 mcstransd: [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.25' (ECDSA) to the list of known hosts. syzkaller login: [ 115.630119][ T27] kauditd_printk_skb: 6 callbacks suppressed [ 115.630135][ T27] audit: type=1400 audit(1580357354.251:42): avc: denied { map } for pid=10859 comm="syz-executor944" path="/root/syz-executor944667543" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 115.656131][T10860] IPVS: ftp: loaded support on port[0] = 21 [ 115.719211][T10860] chnl_net:caif_netlink_parms(): no params data found [ 115.751096][T10860] bridge0: port 1(bridge_slave_0) entered blocking state [ 115.758657][T10860] bridge0: port 1(bridge_slave_0) entered disabled state [ 115.766551][T10860] device bridge_slave_0 entered promiscuous mode [ 115.776051][T10860] bridge0: port 2(bridge_slave_1) entered blocking state [ 115.783291][T10860] bridge0: port 2(bridge_slave_1) entered disabled state [ 115.791729][T10860] device bridge_slave_1 entered promiscuous mode [ 115.811009][T10860] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 115.823357][T10860] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 115.844502][T10860] team0: Port device team_slave_0 added [ 115.852442][T10860] team0: Port device team_slave_1 added [ 115.868784][T10860] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 115.875882][T10860] 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. [ 115.901987][T10860] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 115.915173][T10860] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 115.922182][T10860] 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. [ 115.949001][T10860] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 116.011291][T10860] device hsr_slave_0 entered promiscuous mode [ 116.049287][T10860] device hsr_slave_1 entered promiscuous mode [ 116.166241][ T27] audit: type=1400 audit(1580357354.781:43): avc: denied { create } for pid=10860 comm="syz-executor944" 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 [ 116.192067][ T27] audit: type=1400 audit(1580357354.811:44): avc: denied { write } for pid=10860 comm="syz-executor944" 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 [ 116.194355][T10860] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 116.219617][ T27] audit: type=1400 audit(1580357354.811:45): avc: denied { read } for pid=10860 comm="syz-executor944" 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 [ 116.262485][T10860] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 116.340998][T10860] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 116.421241][T10860] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 116.495289][T10860] bridge0: port 2(bridge_slave_1) entered blocking state [ 116.502674][T10860] bridge0: port 2(bridge_slave_1) entered forwarding state [ 116.510638][T10860] bridge0: port 1(bridge_slave_0) entered blocking state [ 116.517715][T10860] bridge0: port 1(bridge_slave_0) entered forwarding state [ 116.575630][T10860] 8021q: adding VLAN 0 to HW filter on device bond0 [ 116.591465][ T3068] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 116.602720][ T3068] bridge0: port 1(bridge_slave_0) entered disabled state [ 116.611393][ T3068] bridge0: port 2(bridge_slave_1) entered disabled state [ 116.621030][ T3068] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 116.635527][T10860] 8021q: adding VLAN 0 to HW filter on device team0 [ 116.648712][ T2689] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 116.657364][ T2689] bridge0: port 1(bridge_slave_0) entered blocking state [ 116.664575][ T2689] bridge0: port 1(bridge_slave_0) entered forwarding state [ 116.678676][ T2798] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 116.687514][ T2798] bridge0: port 2(bridge_slave_1) entered blocking state [ 116.694789][ T2798] bridge0: port 2(bridge_slave_1) entered forwarding state [ 116.718733][ T2689] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 116.727385][ T2689] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 116.737693][ T2689] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 116.746853][ T2689] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 116.755482][ T2689] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 116.764706][ T2689] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 116.774351][ T2689] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 116.793947][T10860] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 116.809720][T10860] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 116.821987][ T2798] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 116.830705][ T2798] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 116.839579][ T2798] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 116.849181][ T2798] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 116.857714][ T2798] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 116.879459][ T2689] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 116.887064][ T2689] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 116.903308][T10860] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 116.926843][ T2798] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 116.935757][ T2798] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 116.957531][ T2689] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 116.967011][ T2689] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 116.976529][ T2689] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 116.984396][ T2689] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 116.993777][T10860] device veth0_vlan entered promiscuous mode [ 117.007283][T10860] device veth1_vlan entered promiscuous mode [ 117.034088][ T2798] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 117.043794][ T2798] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 117.052290][ T2798] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 117.061221][ T2798] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 117.073543][T10860] device veth0_macvtap entered promiscuous mode [ 117.084982][T10860] device veth1_macvtap entered promiscuous mode [ 117.105639][T10860] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 117.113623][ T2689] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 117.122289][ T2689] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready executing program [ 117.130374][ T2689] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 117.139335][ T2689] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 117.151830][T10860] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 117.159837][ T2798] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 117.168350][ T2798] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 117.300961][ T27] audit: type=1400 audit(1580357355.921:46): avc: denied { write } for pid=10860 comm="syz-executor944" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:unlabeled_t:s0 tclass=socket permissive=1 [ 117.764671][T10864] general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN [ 117.776682][T10864] KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] [ 117.785299][T10864] CPU: 0 PID: 10864 Comm: syz-executor944 Not tainted 5.5.0-syzkaller #0 [ 117.793697][T10864] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 117.803888][T10864] RIP: 0010:__lock_acquire+0x1254/0x4a00 [ 117.809549][T10864] Code: 00 0f 85 96 24 00 00 48 81 c4 f0 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 0b 28 00 00 49 81 3e 60 37 bd 8a 0f 84 5f ee ff [ 117.829252][T10864] RSP: 0018:ffffc90001e67a18 EFLAGS: 00010006 [ 117.835297][T10864] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 117.843266][T10864] RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000001 [ 117.851231][T10864] RBP: ffffc90001e67b30 R08: 0000000000000001 R09: 0000000000000001 [ 117.859227][T10864] R10: fffffbfff1505ce0 R11: ffff8880a7e1e300 R12: 0000000000000018 [ 117.867202][T10864] R13: 0000000000000000 R14: 0000000000000018 R15: 0000000000000001 [ 117.875166][T10864] FS: 00007fa530d37700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 117.884079][T10864] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 117.890768][T10864] CR2: 00000000004ad780 CR3: 000000009f9f5000 CR4: 00000000001406f0 [ 117.898731][T10864] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 117.906757][T10864] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 117.914895][T10864] Call Trace: [ 117.918188][T10864] ? __kasan_check_read+0x11/0x20 [ 117.923214][T10864] ? mark_lock+0xc2/0x1220 [ 117.927626][T10864] ? __kasan_check_read+0x11/0x20 [ 117.932642][T10864] ? __lock_acquire+0x16f2/0x4a00 [ 117.937660][T10864] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 117.943886][T10864] ? mark_held_locks+0xf0/0xf0 [ 117.948706][T10864] lock_acquire+0x190/0x410 [ 117.953199][T10864] ? prepare_to_wait+0x7c/0x300 [ 117.958098][T10864] _raw_spin_lock_irqsave+0x95/0xcd [ 117.963288][T10864] ? prepare_to_wait+0x7c/0x300 [ 117.968131][T10864] prepare_to_wait+0x7c/0x300 [ 117.972826][T10864] ? lock_sock_nested+0x9a/0x120 [ 117.978104][T10864] ? add_wait_queue_exclusive+0x1a0/0x1a0 [ 117.983826][T10864] ? lock_sock_nested+0xe2/0x120 [ 117.988769][T10864] nr_accept+0x245/0x770 [ 117.992998][T10864] ? nr_recvmsg+0x4d0/0x4d0 [ 117.997787][T10864] ? do_raw_spin_unlock+0x181/0x270 [ 118.002978][T10864] ? finish_wait+0x260/0x260 [ 118.007568][T10864] ? selinux_socket_accept+0x1ed/0x260 [ 118.013065][T10864] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 118.019329][T10864] ? nr_recvmsg+0x4d0/0x4d0 [ 118.023932][T10864] __sys_accept4_file+0x3be/0x5e0 [ 118.028949][T10864] ? __ia32_sys_listen+0x80/0x80 [ 118.033869][T10864] ? ksys_dup3+0x3e0/0x3e0 [ 118.038314][T10864] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 118.044276][T10864] ? __x64_sys_futex+0x404/0x590 [ 118.049207][T10864] ? __fget_light+0x1a9/0x230 [ 118.053877][T10864] __sys_accept4+0x5a/0xa0 [ 118.058276][T10864] __x64_sys_accept+0x75/0xb0 [ 118.062991][T10864] do_syscall_64+0xfa/0x790 [ 118.067487][T10864] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 118.073373][T10864] RIP: 0033:0x447fb9 [ 118.077254][T10864] Code: e8 ec 14 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 8b 0e fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 118.096945][T10864] RSP: 002b:00007fa530d36db8 EFLAGS: 00000246 ORIG_RAX: 000000000000002b [ 118.105339][T10864] RAX: ffffffffffffffda RBX: 00000000006ddc68 RCX: 0000000000447fb9 [ 118.113313][T10864] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 [ 118.121276][T10864] RBP: 00000000006ddc60 R08: 0000000000000000 R09: 0000000000000000 [ 118.129245][T10864] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006ddc6c [ 118.143233][T10864] R13: 00007fffe120c1ff R14: 00007fa530d379c0 R15: 000000000000002d [ 118.151240][T10864] Modules linked in: [ 118.155803][T10864] ---[ end trace 81a179622db7238a ]--- [ 118.161254][T10864] RIP: 0010:__lock_acquire+0x1254/0x4a00 [ 118.166963][T10864] Code: 00 0f 85 96 24 00 00 48 81 c4 f0 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 0b 28 00 00 49 81 3e 60 37 bd 8a 0f 84 5f ee ff [ 118.186816][T10864] RSP: 0018:ffffc90001e67a18 EFLAGS: 00010006 [ 118.192883][T10864] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 118.200925][T10864] RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000001 [ 118.208893][T10864] RBP: ffffc90001e67b30 R08: 0000000000000001 R09: 0000000000000001 [ 118.217007][T10864] R10: fffffbfff1505ce0 R11: ffff8880a7e1e300 R12: 0000000000000018 [ 118.225124][T10864] R13: 0000000000000000 R14: 0000000000000018 R15: 0000000000000001 [ 118.233089][T10864] FS: 00007fa530d37700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 118.242007][T10864] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 118.248581][T10864] CR2: 00000000004ad780 CR3: 000000009f9f5000 CR4: 00000000001406f0 [ 118.256587][T10864] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 118.264602][T10864] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 118.272689][T10864] Kernel panic - not syncing: Fatal exception [ 118.280236][T10864] Kernel Offset: disabled [ 118.284572][T10864] Rebooting in 86400 seconds..