[....] 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 Sh[ 33.283163] kauditd_printk_skb: 9 callbacks suppressed [ 33.283175] audit: type=1800 audit(1542496820.157:33): pid=6021 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 ell server: sshd[?25l[?1c7[1[ 33.312214] audit: type=1800 audit(1542496820.157:34): pid=6021 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 G[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 35.969520] audit: type=1400 audit(1542496822.837:35): avc: denied { map } for pid=6196 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 '10.128.10.2' (ECDSA) to the list of known hosts. [ 95.533369] audit: type=1400 audit(1542496882.407:36): avc: denied { map } for pid=6210 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2018/11/17 23:21:22 parsed 1 programs [ 96.103394] audit: type=1400 audit(1542496882.977:37): avc: denied { map } for pid=6210 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=74 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 2018/11/17 23:21:24 executed programs: 0 [ 97.470446] IPVS: ftp: loaded support on port[0] = 21 [ 97.727135] bridge0: port 1(bridge_slave_0) entered blocking state [ 97.734413] bridge0: port 1(bridge_slave_0) entered disabled state [ 97.742005] device bridge_slave_0 entered promiscuous mode [ 97.760402] bridge0: port 2(bridge_slave_1) entered blocking state [ 97.766852] bridge0: port 2(bridge_slave_1) entered disabled state [ 97.774508] device bridge_slave_1 entered promiscuous mode [ 97.792018] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 97.810563] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 97.862013] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 97.882752] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 97.961255] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 97.968638] team0: Port device team_slave_0 added [ 97.986562] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 97.994335] team0: Port device team_slave_1 added [ 98.012436] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 98.033169] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 98.054397] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 98.075097] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 98.228176] bridge0: port 2(bridge_slave_1) entered blocking state [ 98.234606] bridge0: port 2(bridge_slave_1) entered forwarding state [ 98.241540] bridge0: port 1(bridge_slave_0) entered blocking state [ 98.247891] bridge0: port 1(bridge_slave_0) entered forwarding state [ 98.781913] 8021q: adding VLAN 0 to HW filter on device bond0 [ 98.836449] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 98.891180] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 98.897288] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 98.905283] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 98.951233] 8021q: adding VLAN 0 to HW filter on device team0 [ 99.245853] audit: type=1400 audit(1542496886.117:38): avc: denied { associate } for pid=6223 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 2018/11/17 23:21:29 executed programs: 95 [ 106.991643] ================================================================== [ 106.999177] BUG: KASAN: user-memory-access in n_tty_set_termios+0x106/0xe80 [ 107.006281] Write of size 512 at addr 0000000000001060 by task syz-executor0/7848 [ 107.013894] [ 107.015511] CPU: 1 PID: 7848 Comm: syz-executor0 Not tainted 4.20.0-rc2+ #118 [ 107.022764] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 107.032123] Call Trace: [ 107.034699] dump_stack+0x244/0x39d [ 107.038315] ? dump_stack_print_info.cold.1+0x20/0x20 [ 107.043497] ? vprintk_func+0x85/0x181 [ 107.047370] kasan_report.cold.8+0x6d/0x309 [ 107.051678] ? n_tty_set_termios+0x106/0xe80 [ 107.056080] check_memory_region+0x13e/0x1b0 [ 107.060475] memset+0x23/0x40 [ 107.063567] n_tty_set_termios+0x106/0xe80 [ 107.067790] ? n_tty_receive_signal_char+0x120/0x120 [ 107.072878] tty_set_termios+0x7a0/0xac0 [ 107.076925] ? tty_wait_until_sent+0x5d0/0x5d0 [ 107.081497] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 107.087026] set_termios+0x41e/0x7d0 [ 107.090738] ? tty_perform_flush+0x80/0x80 [ 107.094963] ? drop_futex_key_refs.isra.14+0x6d/0xe0 [ 107.100065] tty_mode_ioctl+0x857/0xb40 [ 107.104057] ? set_termios+0x7d0/0x7d0 [ 107.107931] ? perf_trace_sched_process_exec+0x860/0x860 [ 107.113370] ? avc_has_extended_perms+0x8cb/0x15a0 [ 107.118289] n_tty_ioctl_helper+0x54/0x3b0 [ 107.122511] n_tty_ioctl+0x54/0x360 [ 107.126139] ? ldsem_down_read+0x32/0x40 [ 107.130183] ? ldsem_down_read+0x32/0x40 [ 107.134228] tty_ioctl+0x5c6/0x17d0 [ 107.137837] ? commit_echoes+0x1c0/0x1c0 [ 107.141881] ? tty_vhangup+0x30/0x30 [ 107.145594] ? avc_has_extended_perms+0xab2/0x15a0 [ 107.150509] ? avc_ss_reset+0x190/0x190 [ 107.154465] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 107.159418] ? kasan_check_read+0x11/0x20 [ 107.163566] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 107.168822] ? rcu_softirq_qs+0x20/0x20 [ 107.172795] ? perf_trace_sched_process_exec+0x860/0x860 [ 107.178229] ? __might_fault+0x12b/0x1e0 [ 107.182275] ? lock_downgrade+0x900/0x900 [ 107.186410] ? tty_vhangup+0x30/0x30 [ 107.190107] do_vfs_ioctl+0x1de/0x1790 [ 107.193984] ? ioctl_preallocate+0x300/0x300 [ 107.198382] ? selinux_file_mprotect+0x620/0x620 [ 107.203121] ? reciprocal_value_adv+0x72/0x1a0 [ 107.207685] ? __sanitizer_cov_trace_const_cmp4+0x1b/0x20 [ 107.213222] ? put_timespec64+0x10f/0x1b0 [ 107.217502] ? nsecs_to_jiffies+0x30/0x30 [ 107.221657] ? do_syscall_64+0x9a/0x820 [ 107.225617] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 107.231151] ? security_file_ioctl+0x94/0xc0 [ 107.235544] ksys_ioctl+0xa9/0xd0 [ 107.238982] __x64_sys_ioctl+0x73/0xb0 [ 107.242870] do_syscall_64+0x1b9/0x820 [ 107.246740] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 107.252103] ? syscall_return_slowpath+0x5e0/0x5e0 [ 107.257022] ? trace_hardirqs_on_caller+0x310/0x310 [ 107.262041] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 107.267042] ? post_copy_siginfo_from_user.isra.25.part.26+0x250/0x250 [ 107.273721] ? __switch_to_asm+0x40/0x70 [ 107.277785] ? __switch_to_asm+0x34/0x70 [ 107.281860] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 107.286702] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 107.291876] RIP: 0033:0x457569 [ 107.295067] 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 [ 107.313952] RSP: 002b:00007faf6b17ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 107.321640] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 [ 107.328890] RDX: 0000000020000100 RSI: 0000000000005402 RDI: 0000000000000005 [ 107.336143] RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000 [ 107.343395] R10: 0000000000000000 R11: 0000000000000246 R12: 00007faf6b17b6d4 [ 107.350648] R13: 00000000004c0ffe R14: 00000000004d1d88 R15: 00000000ffffffff [ 107.357908] ================================================================== [ 107.365244] Disabling lock debugging due to kernel taint [ 107.371776] Kernel panic - not syncing: panic_on_warn set ... [ 107.377672] CPU: 1 PID: 7848 Comm: syz-executor0 Tainted: G B 4.20.0-rc2+ #118 [ 107.386322] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 107.395658] Call Trace: [ 107.398342] dump_stack+0x244/0x39d [ 107.401970] ? dump_stack_print_info.cold.1+0x20/0x20 [ 107.407164] panic+0x2ad/0x55c [ 107.410340] ? add_taint.cold.5+0x16/0x16 [ 107.414484] ? preempt_schedule+0x4d/0x60 [ 107.418617] ? ___preempt_schedule+0x16/0x18 [ 107.423018] ? trace_hardirqs_on+0xb4/0x310 [ 107.427327] kasan_end_report+0x47/0x4f [ 107.431306] kasan_report.cold.8+0x76/0x309 [ 107.435619] ? n_tty_set_termios+0x106/0xe80 [ 107.440020] check_memory_region+0x13e/0x1b0 [ 107.444415] memset+0x23/0x40 [ 107.447506] n_tty_set_termios+0x106/0xe80 [ 107.451734] ? n_tty_receive_signal_char+0x120/0x120 [ 107.456845] tty_set_termios+0x7a0/0xac0 [ 107.460916] ? tty_wait_until_sent+0x5d0/0x5d0 [ 107.465491] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 107.471030] set_termios+0x41e/0x7d0 [ 107.474739] ? tty_perform_flush+0x80/0x80 [ 107.478959] ? drop_futex_key_refs.isra.14+0x6d/0xe0 [ 107.484046] tty_mode_ioctl+0x857/0xb40 [ 107.488015] ? set_termios+0x7d0/0x7d0 [ 107.491890] ? perf_trace_sched_process_exec+0x860/0x860 [ 107.497340] ? avc_has_extended_perms+0x8cb/0x15a0 [ 107.502252] n_tty_ioctl_helper+0x54/0x3b0 [ 107.506469] n_tty_ioctl+0x54/0x360 [ 107.510079] ? ldsem_down_read+0x32/0x40 [ 107.514131] ? ldsem_down_read+0x32/0x40 [ 107.518206] tty_ioctl+0x5c6/0x17d0 [ 107.521836] ? commit_echoes+0x1c0/0x1c0 [ 107.525894] ? tty_vhangup+0x30/0x30 [ 107.529599] ? avc_has_extended_perms+0xab2/0x15a0 [ 107.534519] ? avc_ss_reset+0x190/0x190 [ 107.538479] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 107.543400] ? kasan_check_read+0x11/0x20 [ 107.547567] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 107.552828] ? rcu_softirq_qs+0x20/0x20 [ 107.556796] ? perf_trace_sched_process_exec+0x860/0x860 [ 107.562231] ? __might_fault+0x12b/0x1e0 [ 107.566276] ? lock_downgrade+0x900/0x900 [ 107.570413] ? tty_vhangup+0x30/0x30 [ 107.574114] do_vfs_ioctl+0x1de/0x1790 [ 107.577986] ? ioctl_preallocate+0x300/0x300 [ 107.582388] ? selinux_file_mprotect+0x620/0x620 [ 107.587128] ? reciprocal_value_adv+0x72/0x1a0 [ 107.591732] ? __sanitizer_cov_trace_const_cmp4+0x1b/0x20 [ 107.597257] ? put_timespec64+0x10f/0x1b0 [ 107.601394] ? nsecs_to_jiffies+0x30/0x30 [ 107.605527] ? do_syscall_64+0x9a/0x820 [ 107.609488] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 107.615017] ? security_file_ioctl+0x94/0xc0 [ 107.619410] ksys_ioctl+0xa9/0xd0 [ 107.622847] __x64_sys_ioctl+0x73/0xb0 [ 107.626721] do_syscall_64+0x1b9/0x820 [ 107.630594] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 107.635941] ? syscall_return_slowpath+0x5e0/0x5e0 [ 107.640856] ? trace_hardirqs_on_caller+0x310/0x310 [ 107.645857] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 107.650859] ? post_copy_siginfo_from_user.isra.25.part.26+0x250/0x250 [ 107.657509] ? __switch_to_asm+0x40/0x70 [ 107.661562] ? __switch_to_asm+0x34/0x70 [ 107.665610] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 107.670456] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 107.675644] RIP: 0033:0x457569 [ 107.678826] 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 [ 107.697711] RSP: 002b:00007faf6b17ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 107.705400] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 [ 107.712660] RDX: 0000000020000100 RSI: 0000000000005402 RDI: 0000000000000005 [ 107.719914] RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000 [ 107.727166] R10: 0000000000000000 R11: 0000000000000246 R12: 00007faf6b17b6d4 [ 107.734441] R13: 00000000004c0ffe R14: 00000000004d1d88 R15: 00000000ffffffff [ 107.742681] Kernel Offset: disabled [ 107.746307] Rebooting in 86400 seconds..