[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 28.554943] kauditd_printk_skb: 8 callbacks suppressed [ 28.554955] audit: type=1800 audit(1540041918.971:29): pid=5243 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 28.588993] audit: type=1800 audit(1540041918.971:30): pid=5243 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.23' (ECDSA) to the list of known hosts. 2018/10/20 13:25:45 parsed 1 programs 2018/10/20 13:25:47 executed programs: 0 syzkaller login: [ 56.783096] IPVS: ftp: loaded support on port[0] = 21 [ 57.030566] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.037266] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.044897] device bridge_slave_0 entered promiscuous mode [ 57.063511] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.070195] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.077600] device bridge_slave_1 entered promiscuous mode [ 57.095169] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 57.112930] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 57.163089] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 57.183865] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 57.260139] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 57.267823] team0: Port device team_slave_0 added [ 57.284498] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 57.292868] team0: Port device team_slave_1 added [ 57.311086] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 57.335633] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 57.354647] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 57.373849] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 57.515978] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.522447] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.529403] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.535789] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.049787] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.103771] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 58.157138] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 58.163290] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 58.171661] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 58.219539] 8021q: adding VLAN 0 to HW filter on device team0 2018/10/20 13:25:52 executed programs: 143 2018/10/20 13:25:57 executed programs: 370 2018/10/20 13:26:02 executed programs: 594 2018/10/20 13:26:07 executed programs: 819 2018/10/20 13:26:12 executed programs: 1048 2018/10/20 13:26:17 executed programs: 1267 2018/10/20 13:26:22 executed programs: 1495 2018/10/20 13:26:27 executed programs: 1719 2018/10/20 13:26:32 executed programs: 1948 2018/10/20 13:26:37 executed programs: 2170 2018/10/20 13:26:42 executed programs: 2392 2018/10/20 13:26:47 executed programs: 2611 [ 120.081613] kasan: CONFIG_KASAN_INLINE enabled [ 120.086902] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 120.094321] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 120.100552] CPU: 0 PID: 17026 Comm: syz-executor0 Not tainted 4.19.0-rc8+ #70 [ 120.107826] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 120.117178] RIP: 0010:n_tty_set_termios+0x2d9/0xe80 [ 120.122181] Code: 45 d0 31 ff 83 e0 02 89 c6 89 45 d0 e8 a0 fa a9 fd 8b 45 d0 4c 89 f1 48 ba 00 00 00 00 00 fc ff df 85 c0 0f 95 c0 48 c1 e9 03 <0f> b6 14 11 4c 89 f1 83 e1 07 38 ca 7f 08 84 d2 0f 85 96 09 00 00 [ 120.141062] RSP: 0018:ffff8801c85e7678 EFLAGS: 00010203 [ 120.146407] RAX: 0000000000000001 RBX: 0000000000000000 RCX: 000000000000000b [ 120.153662] RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000005 [ 120.160924] RBP: ffff8801c85e76b0 R08: ffff8801cdcc0380 R09: 0000000000000002 [ 120.168173] R10: ffff8801cdcc0c50 R11: edf061219a426e1b R12: ffff8801d121d500 [ 120.175443] R13: ffff8801d121d8b4 R14: 000000000000005d R15: ffff8801c85e7710 [ 120.182696] FS: 00007fab63895700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 120.190903] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 120.196765] CR2: 00007fab63852db8 CR3: 00000001d4fd7000 CR4: 00000000001406f0 [ 120.204017] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 120.211267] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 120.218516] Call Trace: [ 120.221094] ? n_tty_poll+0xa40/0xa40 [ 120.224880] tty_set_termios+0x7a0/0xac0 [ 120.228927] ? tty_wait_until_sent+0x5d0/0x5d0 [ 120.233512] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 120.239034] set_termios+0x41e/0x7d0 [ 120.242733] ? tty_perform_flush+0x80/0x80 [ 120.246968] tty_mode_ioctl+0x83a/0xb40 [ 120.250974] ? mark_held_locks+0x130/0x130 [ 120.255193] ? set_termios+0x7d0/0x7d0 [ 120.259071] ? tty_kref_put.part.14+0x88/0x260 [ 120.263638] ? ___might_sleep+0x1ed/0x300 [ 120.267772] ? arch_local_save_flags+0x40/0x40 [ 120.272367] n_tty_ioctl_helper+0x54/0x3b0 [ 120.276596] n_tty_ioctl+0x54/0x360 [ 120.280214] ? ldsem_down_read+0x32/0x40 [ 120.284261] ? ldsem_down_read+0x32/0x40 [ 120.288316] tty_ioctl+0x5ad/0x1820 [ 120.291935] ? commit_echoes+0x1c0/0x1c0 [ 120.295988] ? tty_vhangup+0x30/0x30 [ 120.299703] ? rcu_bh_qs+0xc0/0xc0 [ 120.303247] ? __fget+0x4d1/0x740 [ 120.306685] ? ksys_dup3+0x680/0x680 [ 120.310383] ? __might_fault+0x12b/0x1e0 [ 120.314429] ? lock_downgrade+0x900/0x900 [ 120.318560] ? lock_release+0x970/0x970 [ 120.322518] ? arch_local_save_flags+0x40/0x40 [ 120.327089] ? tty_vhangup+0x30/0x30 [ 120.330788] do_vfs_ioctl+0x1de/0x1720 [ 120.334670] ? ioctl_preallocate+0x300/0x300 [ 120.339061] ? memset+0x31/0x40 [ 120.342329] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 120.347851] ? smack_file_ioctl+0x210/0x3c0 [ 120.352156] ? fget_raw+0x20/0x20 [ 120.355601] ? smack_file_lock+0x2e0/0x2e0 [ 120.359845] ? do_syscall_64+0x9a/0x820 [ 120.363800] ? do_syscall_64+0x9a/0x820 [ 120.367775] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 120.373298] ? security_file_ioctl+0x94/0xc0 [ 120.377710] ksys_ioctl+0xa9/0xd0 [ 120.381150] __x64_sys_ioctl+0x73/0xb0 [ 120.385048] do_syscall_64+0x1b9/0x820 [ 120.388924] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 120.394268] ? syscall_return_slowpath+0x5e0/0x5e0 [ 120.399181] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 120.404009] ? trace_hardirqs_on_caller+0x310/0x310 [ 120.409008] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 120.414007] ? prepare_exit_to_usermode+0x291/0x3b0 [ 120.419010] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 120.423845] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 120.429020] RIP: 0033:0x457569 [ 120.432199] 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 [ 120.451081] RSP: 002b:00007fab63894c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 120.458787] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 [ 120.466051] RDX: 0000000020000040 RSI: 0000000000005407 RDI: 0000000000000005 [ 120.473299] RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 [ 120.480552] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fab638956d4 [ 120.487817] R13: 00000000004c0d89 R14: 00000000004d17a0 R15: 00000000ffffffff [ 120.495074] Modules linked in: [ 120.499578] ---[ end trace 74a046e065e2d625 ]--- [ 120.504352] RIP: 0010:n_tty_set_termios+0x2d9/0xe80 [ 120.509579] Code: 45 d0 31 ff 83 e0 02 89 c6 89 45 d0 e8 a0 fa a9 fd 8b 45 d0 4c 89 f1 48 ba 00 00 00 00 00 fc ff df 85 c0 0f 95 c0 48 c1 e9 03 <0f> b6 14 11 4c 89 f1 83 e1 07 38 ca 7f 08 84 d2 0f 85 96 09 00 00 [ 120.528538] RSP: 0018:ffff8801c85e7678 EFLAGS: 00010203 [ 120.533917] RAX: 0000000000000001 RBX: 0000000000000000 RCX: 000000000000000b [ 120.541491] RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000005 [ 120.548828] RBP: ffff8801c85e76b0 R08: ffff8801cdcc0380 R09: 0000000000000002 [ 120.556214] R10: ffff8801cdcc0c50 R11: edf061219a426e1b R12: ffff8801d121d500 [ 120.563480] R13: ffff8801d121d8b4 R14: 000000000000005d R15: ffff8801c85e7710 [ 120.570820] FS: 00007fab63895700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 120.579075] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 120.584942] CR2: 00007fab63852db8 CR3: 00000001d4fd7000 CR4: 00000000001406f0 [ 120.592233] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 120.599519] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 120.606842] Kernel panic - not syncing: Fatal exception [ 120.613127] Kernel Offset: disabled [ 120.616750] Rebooting in 86400 seconds..