Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 31.578328] kauditd_printk_skb: 9 callbacks suppressed [ 31.578339] audit: type=1800 audit(1542180291.634:33): pid=5917 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 31.606339] audit: type=1800 audit(1542180291.634:34): pid=5917 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 33.978052] audit: type=1400 audit(1542180294.034:35): avc: denied { map } for pid=6091 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 '10.128.0.111' (ECDSA) to the list of known hosts. [ 64.838796] audit: type=1400 audit(1542180324.894:36): avc: denied { map } for pid=6106 comm="syz-execprog" path="/root/syz-execprog" 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 2018/11/14 07:25:25 parsed 1 programs [ 65.392897] audit: type=1400 audit(1542180325.444:37): avc: denied { map } for pid=6106 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=69 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 2018/11/14 07:25:26 executed programs: 0 [ 66.854830] IPVS: ftp: loaded support on port[0] = 21 [ 67.117746] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.127999] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.135194] device bridge_slave_0 entered promiscuous mode [ 67.167877] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.174477] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.182751] device bridge_slave_1 entered promiscuous mode [ 67.203491] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 67.223565] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 67.273461] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 67.295207] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 67.371077] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 67.378657] team0: Port device team_slave_0 added [ 67.396680] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 67.403767] team0: Port device team_slave_1 added [ 67.422137] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 67.445327] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 67.463795] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 67.484404] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 67.627755] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.634366] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.641418] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.647778] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.150574] 8021q: adding VLAN 0 to HW filter on device bond0 [ 68.201702] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 68.251899] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 68.258317] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 68.265980] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 68.313333] 8021q: adding VLAN 0 to HW filter on device team0 [ 68.595366] audit: type=1400 audit(1542180328.644:38): avc: denied { associate } for pid=6119 comm="syz-executor0" name="syz0" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 2018/11/14 07:25:31 executed programs: 95 2018/11/14 07:25:36 executed programs: 246 2018/11/14 07:25:41 executed programs: 397 2018/11/14 07:25:46 executed programs: 547 [ 91.319254] ================================================================== [ 91.326778] BUG: KASAN: user-memory-access in n_tty_set_termios+0x106/0xe80 [ 91.333876] Write of size 512 at addr 0000000000001060 by task syz-executor0/10457 [ 91.341569] [ 91.343222] CPU: 1 PID: 10457 Comm: syz-executor0 Not tainted 4.20.0-rc2+ #112 [ 91.350573] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 91.359916] Call Trace: [ 91.362502] dump_stack+0x244/0x39d [ 91.366129] ? dump_stack_print_info.cold.1+0x20/0x20 [ 91.371336] ? vprintk_func+0x85/0x181 [ 91.375229] kasan_report.cold.8+0x6d/0x309 [ 91.379548] ? n_tty_set_termios+0x106/0xe80 [ 91.383956] check_memory_region+0x13e/0x1b0 [ 91.388363] memset+0x23/0x40 [ 91.391468] n_tty_set_termios+0x106/0xe80 [ 91.395700] ? n_tty_receive_signal_char+0x120/0x120 [ 91.400799] tty_set_termios+0x7a0/0xac0 [ 91.404863] ? tty_wait_until_sent+0x5d0/0x5d0 [ 91.409448] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 91.414981] ? ldsem_up_read+0x54/0x90 [ 91.418866] set_termios+0x41e/0x7d0 [ 91.422579] ? tty_perform_flush+0x80/0x80 [ 91.426823] ? drop_futex_key_refs.isra.14+0x6d/0xe0 [ 91.431926] tty_mode_ioctl+0x857/0xb40 [ 91.435897] ? set_termios+0x7d0/0x7d0 [ 91.439786] ? perf_trace_sched_process_exec+0x860/0x860 [ 91.445240] ? avc_has_extended_perms+0x8cb/0x15a0 [ 91.450171] n_tty_ioctl_helper+0x54/0x3b0 [ 91.454402] n_tty_ioctl+0x54/0x360 [ 91.458029] ? ldsem_down_read+0x32/0x40 [ 91.462086] ? ldsem_down_read+0x32/0x40 [ 91.466143] tty_ioctl+0x5c6/0x17d0 [ 91.469764] ? commit_echoes+0x1c0/0x1c0 [ 91.473823] ? tty_vhangup+0x30/0x30 [ 91.477560] ? avc_has_extended_perms+0xab2/0x15a0 [ 91.482496] ? avc_ss_reset+0x190/0x190 [ 91.486467] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 91.491416] ? kasan_check_read+0x11/0x20 [ 91.495559] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 91.500831] ? rcu_softirq_qs+0x20/0x20 [ 91.504822] ? perf_trace_sched_process_exec+0x860/0x860 [ 91.510285] ? __might_fault+0x12b/0x1e0 [ 91.514348] ? lock_downgrade+0x900/0x900 [ 91.518500] ? tty_vhangup+0x30/0x30 [ 91.522212] do_vfs_ioctl+0x1de/0x1790 [ 91.526144] ? ioctl_preallocate+0x300/0x300 [ 91.530551] ? selinux_file_mprotect+0x620/0x620 [ 91.535318] ? rht_deferred_worker+0x14e2/0x1de0 [ 91.540074] ? __sanitizer_cov_trace_const_cmp4+0x1b/0x20 [ 91.545607] ? put_timespec64+0x10f/0x1b0 [ 91.549752] ? nsecs_to_jiffies+0x30/0x30 [ 91.553897] ? do_syscall_64+0x9a/0x820 [ 91.557871] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 91.563423] ? security_file_ioctl+0x94/0xc0 [ 91.567833] ksys_ioctl+0xa9/0xd0 [ 91.571295] __x64_sys_ioctl+0x73/0xb0 [ 91.575176] do_syscall_64+0x1b9/0x820 [ 91.579061] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 91.584421] ? syscall_return_slowpath+0x5e0/0x5e0 [ 91.589346] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 91.594184] ? trace_hardirqs_on_caller+0x310/0x310 [ 91.599194] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 91.604199] ? prepare_exit_to_usermode+0x291/0x3b0 [ 91.609214] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 91.614095] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 91.619290] RIP: 0033:0x457569 [ 91.622483] Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 91.641375] RSP: 002b:00007fc07a60ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 91.649115] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 [ 91.656484] RDX: 0000000020000100 RSI: 0000000000005402 RDI: 0000000000000005 [ 91.663747] RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 [ 91.671008] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc07a60b6d4 [ 91.678281] R13: 00000000004c0ffe R14: 00000000004d1d88 R15: 00000000ffffffff [ 91.685553] ================================================================== [ 91.692897] Disabling lock debugging due to kernel taint [ 91.699380] Kernel panic - not syncing: panic_on_warn set ... [ 91.705301] CPU: 1 PID: 10457 Comm: syz-executor0 Tainted: G B 4.20.0-rc2+ #112 [ 91.714053] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 91.723400] Call Trace: [ 91.725984] dump_stack+0x244/0x39d [ 91.729607] ? dump_stack_print_info.cold.1+0x20/0x20 [ 91.734803] panic+0x2ad/0x55c [ 91.737989] ? add_taint.cold.5+0x16/0x16 [ 91.742131] ? preempt_schedule+0x4d/0x60 [ 91.746291] ? ___preempt_schedule+0x16/0x18 [ 91.750694] ? trace_hardirqs_on+0xb4/0x310 [ 91.755012] kasan_end_report+0x47/0x4f [ 91.758984] kasan_report.cold.8+0x76/0x309 [ 91.763309] ? n_tty_set_termios+0x106/0xe80 [ 91.767716] check_memory_region+0x13e/0x1b0 [ 91.772115] memset+0x23/0x40 [ 91.775219] n_tty_set_termios+0x106/0xe80 [ 91.779449] ? n_tty_receive_signal_char+0x120/0x120 [ 91.784545] tty_set_termios+0x7a0/0xac0 [ 91.788601] ? tty_wait_until_sent+0x5d0/0x5d0 [ 91.793215] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 91.798749] ? ldsem_up_read+0x54/0x90 [ 91.802636] set_termios+0x41e/0x7d0 [ 91.806357] ? tty_perform_flush+0x80/0x80 [ 91.810589] ? drop_futex_key_refs.isra.14+0x6d/0xe0 [ 91.815688] tty_mode_ioctl+0x857/0xb40 [ 91.819653] ? set_termios+0x7d0/0x7d0 [ 91.823537] ? perf_trace_sched_process_exec+0x860/0x860 [ 91.828982] ? avc_has_extended_perms+0x8cb/0x15a0 [ 91.834123] n_tty_ioctl_helper+0x54/0x3b0 [ 91.838357] n_tty_ioctl+0x54/0x360 [ 91.841978] ? ldsem_down_read+0x32/0x40 [ 91.846087] ? ldsem_down_read+0x32/0x40 [ 91.850140] tty_ioctl+0x5c6/0x17d0 [ 91.853761] ? commit_echoes+0x1c0/0x1c0 [ 91.857820] ? tty_vhangup+0x30/0x30 [ 91.861531] ? avc_has_extended_perms+0xab2/0x15a0 [ 91.866456] ? avc_ss_reset+0x190/0x190 [ 91.870423] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 91.875356] ? kasan_check_read+0x11/0x20 [ 91.879504] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 91.884776] ? rcu_softirq_qs+0x20/0x20 [ 91.888763] ? perf_trace_sched_process_exec+0x860/0x860 [ 91.894227] ? __might_fault+0x12b/0x1e0 [ 91.898302] ? lock_downgrade+0x900/0x900 [ 91.902443] ? tty_vhangup+0x30/0x30 [ 91.906192] do_vfs_ioctl+0x1de/0x1790 [ 91.910076] ? ioctl_preallocate+0x300/0x300 [ 91.914523] ? selinux_file_mprotect+0x620/0x620 [ 91.919285] ? rht_deferred_worker+0x14e2/0x1de0 [ 91.924039] ? __sanitizer_cov_trace_const_cmp4+0x1b/0x20 [ 91.929572] ? put_timespec64+0x10f/0x1b0 [ 91.933753] ? nsecs_to_jiffies+0x30/0x30 [ 91.937904] ? do_syscall_64+0x9a/0x820 [ 91.941874] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 91.947407] ? security_file_ioctl+0x94/0xc0 [ 91.951810] ksys_ioctl+0xa9/0xd0 [ 91.955273] __x64_sys_ioctl+0x73/0xb0 [ 91.959157] do_syscall_64+0x1b9/0x820 [ 91.963040] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 91.968413] ? syscall_return_slowpath+0x5e0/0x5e0 [ 91.973337] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 91.978174] ? trace_hardirqs_on_caller+0x310/0x310 [ 91.983189] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 91.988208] ? prepare_exit_to_usermode+0x291/0x3b0 [ 91.993261] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 91.998105] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 92.003293] RIP: 0033:0x457569 [ 92.006491] Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 92.025433] RSP: 002b:00007fc07a60ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 92.033145] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 [ 92.040405] RDX: 0000000020000100 RSI: 0000000000005402 RDI: 0000000000000005 [ 92.047674] RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 [ 92.054943] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc07a60b6d4 [ 92.062211] R13: 00000000004c0ffe R14: 00000000004d1d88 R15: 00000000ffffffff [ 92.071012] Kernel Offset: disabled [ 92.074647] Rebooting in 86400 seconds..