[ 41.836985] audit: type=1800 audit(1580111957.922:29): pid=7973 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2447 res=0 [ 41.871588] audit: type=1800 audit(1580111957.922:30): pid=7973 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=2490 res=0 Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] 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 Warning: Permanently added '10.128.0.29' (ECDSA) to the list of known hosts. syzkaller login: [ 51.516663] kauditd_printk_skb: 5 callbacks suppressed [ 51.516679] audit: type=1400 audit(1580111967.602:36): avc: denied { map } for pid=8159 comm="syz-executor059" path="/root/syz-executor059819964" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 51.536070] IPVS: ftp: loaded support on port[0] = 21 [ 51.594761] chnl_net:caif_netlink_parms(): no params data found [ 51.625431] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.632025] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.639681] device bridge_slave_0 entered promiscuous mode [ 51.647068] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.653515] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.660412] device bridge_slave_1 entered promiscuous mode [ 51.676829] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 51.685676] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 51.701054] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 51.708590] team0: Port device team_slave_0 added [ 51.714272] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 51.721438] team0: Port device team_slave_1 added [ 51.734606] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 51.740859] 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. [ 51.766186] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 51.777926] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 51.784294] 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. [ 51.809522] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 51.820453] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 51.828117] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 51.914023] device hsr_slave_0 entered promiscuous mode [ 51.992447] device hsr_slave_1 entered promiscuous mode [ 52.052849] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 52.060002] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 52.114251] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.120695] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.127687] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.134066] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.166341] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 52.173114] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.180902] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 52.189846] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.208918] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.216719] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.224721] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 52.235429] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 52.241639] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.250893] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.258695] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.265067] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.276151] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.283760] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.290087] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.311661] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 52.321744] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 52.333464] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 52.340609] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.349003] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.356816] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 52.364516] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 52.377463] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 52.384058] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 52.390793] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 52.399478] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 52.406375] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 52.418289] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 52.431419] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 52.442840] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 52.483565] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 52.490679] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 52.497672] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 52.508073] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 52.515915] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 52.523693] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 52.533206] device veth0_vlan entered promiscuous mode [ 52.542009] device veth1_vlan entered promiscuous mode [ 52.548504] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 52.557114] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 52.568827] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 52.578441] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 52.585900] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 52.593449] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 52.604184] device veth0_macvtap entered promiscuous mode [ 52.611914] device veth1_macvtap entered promiscuous mode [ 52.621861] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 52.632602] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 52.641690] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_0: link is not ready [ 52.650202] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 52.657681] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 52.665599] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 52.676189] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready executing program [ 52.683245] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 52.689792] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 52.697695] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 52.823287] audit: type=1400 audit(1580111968.912:37): avc: denied { write } for pid=8160 comm="syz-executor059" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:unlabeled_t:s0 tclass=socket permissive=1 [ 53.286370] kasan: CONFIG_KASAN_INLINE enabled [ 53.290990] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 53.298832] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 53.305071] CPU: 0 PID: 8175 Comm: syz-executor059 Not tainted 4.19.98-syzkaller #0 [ 53.312853] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.322210] RIP: 0010:__lock_acquire+0x1ca/0x49c0 [ 53.327079] Code: 28 00 00 00 0f 85 37 2e 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 c1 32 00 00 49 81 3f 60 f5 0c 8a 0f 84 55 ff ff [ 53.346086] RSP: 0018:ffff88807f8cf970 EFLAGS: 00010006 [ 53.351457] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 53.358722] RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000001 [ 53.365986] RBP: ffff88807f8cfb40 R08: 0000000000000001 R09: 0000000000000000 [ 53.373245] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000 [ 53.380782] R13: 0000000000000001 R14: ffff888092560440 R15: 0000000000000018 [ 53.388047] FS: 00007f5085014700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 53.396282] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.402163] CR2: 00007f5084f8fe78 CR3: 000000008ce63000 CR4: 00000000001406f0 [ 53.409435] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 53.416690] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 53.423946] Call Trace: [ 53.426527] ? __lock_acquire+0x6ee/0x49c0 [ 53.430756] ? free_one_page+0x99d/0xfb0 [ 53.434820] ? mark_held_locks+0x100/0x100 [ 53.439048] ? lockdep_hardirqs_on+0x415/0x5d0 [ 53.443619] ? mark_held_locks+0x100/0x100 [ 53.447898] ? __free_pages+0x85/0xb0 [ 53.451685] lock_acquire+0x16f/0x3f0 [ 53.455483] ? prepare_to_wait+0x7c/0x300 [ 53.459621] _raw_spin_lock_irqsave+0x95/0xcd [ 53.464124] ? prepare_to_wait+0x7c/0x300 [ 53.468315] prepare_to_wait+0x7c/0x300 [ 53.472288] ? lock_sock_nested+0x9a/0x120 [ 53.476520] ? add_wait_queue_exclusive+0x1a0/0x1a0 [ 53.481536] ? lock_sock_nested+0xe2/0x120 [ 53.485760] nr_accept+0x239/0x760 [ 53.489287] ? nr_ioctl+0x320/0x320 [ 53.492902] ? do_raw_spin_unlock+0x181/0x270 [ 53.497395] ? finish_wait+0x260/0x260 [ 53.501271] ? selinux_socket_accept+0x5f/0x210 [ 53.505938] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.511475] __sys_accept4+0x34e/0x6a0 [ 53.515363] ? __ia32_sys_listen+0x80/0x80 [ 53.519600] ? __x64_sys_futex+0x40d/0x590 [ 53.523882] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 53.528634] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 53.533385] ? do_syscall_64+0x26/0x620 [ 53.537364] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.542719] ? do_syscall_64+0x26/0x620 [ 53.546683] __x64_sys_accept+0x75/0xb0 [ 53.550646] do_syscall_64+0xfd/0x620 [ 53.554442] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.559662] RIP: 0033:0x447fd9 [ 53.562841] 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 [ 53.581745] RSP: 002b:00007f5085013db8 EFLAGS: 00000246 ORIG_RAX: 000000000000002b [ 53.589486] RAX: ffffffffffffffda RBX: 00000000006ddc68 RCX: 0000000000447fd9 [ 53.596749] RDX: 0000000020000100 RSI: 0000000000000000 RDI: 0000000000000004 [ 53.604040] RBP: 00000000006ddc60 R08: 0000000000000000 R09: 0000000000000000 [ 53.611358] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006ddc6c [ 53.618660] R13: 00007ffecfebe35f R14: 00007f50850149c0 R15: 000000000000002d [ 53.625925] Modules linked in: [ 53.629112] ---[ end trace 08c8e785a9b30788 ]--- [ 53.633864] RIP: 0010:__lock_acquire+0x1ca/0x49c0 [ 53.638744] Code: 28 00 00 00 0f 85 37 2e 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 c1 32 00 00 49 81 3f 60 f5 0c 8a 0f 84 55 ff ff [ 53.657740] RSP: 0018:ffff88807f8cf970 EFLAGS: 00010006 [ 53.663093] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 53.670353] RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000001 [ 53.677615] RBP: ffff88807f8cfb40 R08: 0000000000000001 R09: 0000000000000000 [ 53.684866] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000 [ 53.692159] R13: 0000000000000001 R14: ffff888092560440 R15: 0000000000000018 [ 53.700140] FS: 00007f5085014700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 53.708371] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.714246] CR2: 00007f5084f8fe78 CR3: 000000008ce63000 CR4: 00000000001406f0 [ 53.721506] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 53.728775] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 53.736039] Kernel panic - not syncing: Fatal exception [ 53.742803] Kernel Offset: disabled [ 53.746426] Rebooting in 86400 seconds..