INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] 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. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.63' (ECDSA) to the list of known hosts. 2018/04/07 17:28:35 parsed 1 programs 2018/04/07 17:28:35 executed programs: 0 syzkaller login: [ 42.163622] ================================================================== [ 42.171014] BUG: KMSAN: uninit-value in netlink_sendmsg+0xb26/0x1310 [ 42.177484] CPU: 0 PID: 3626 Comm: syz-executor4 Not tainted 4.16.0+ #82 [ 42.184296] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.193625] Call Trace: [ 42.196193] dump_stack+0x185/0x1d0 [ 42.199804] ? netlink_sendmsg+0xb26/0x1310 [ 42.204102] kmsan_report+0x142/0x240 [ 42.207882] __msan_warning_32+0x6c/0xb0 RESULT: signal 0, coverage 0 errno 0 RESULT: signal 0, coverage 0 errno 0 RESULT: signal 0, coverage 0 errno 0 [ 42.211926] netlink_sendmsg+0xb26/0x1310 [ 42.216050] ? netlink_getsockopt+0xc80/0xc80 [ 42.220530] ___sys_sendmsg+0xec0/0x1310 [ 42.224577] ? __fdget+0x4e/0x60 [ 42.227918] ? __fget_light+0x56/0x710 [ 42.231781] ? __fdget+0x4e/0x60 [ 42.235126] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 42.240475] ? __fget_light+0x6b9/0x710 [ 42.244461] SYSC_sendmsg+0x2a3/0x3d0 [ 42.248263] SyS_sendmsg+0x54/0x80 [ 42.251805] do_syscall_64+0x309/0x430 [ 42.255683] ? ___sys_sendmsg+0x1310/0x1310 RESULT: signal 0, coverage 0 errno 0 RESULT: signal 0, coverage 0 errno 0 RESULT: signal 0, coverage 0 errno 0 [ 42.259993] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 42.265159] RIP: 0033:0x455259 [ 42.268322] RSP: 002b:00007fd9af739c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 42.276004] RAX: ffffffffffffffda RBX: 00007fd9af73a6d4 RCX: 0000000000455259 [ 42.283257] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 [ 42.290503] RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 [ 42.297747] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 42.304992] R13: 00000000000004f1 R14: 00000000006fa738 R15: 0000000000000000 [ 42.312255] RESULT: signal 0, coverage 0 errno 0 RESULT: signal 0, coverage 0 errno 0 [ 42.313860] Local variable description: ----address@___sys_sendmsg [ 42.320159] Variable was created at: [ 42.323857] ___sys_sendmsg+0xd3/0x1310 [ 42.327809] SYSC_sendmsg+0x2a3/0x3d0 [ 42.331579] ================================================================== [ 42.338906] Disabling lock debugging due to kernel taint [ 42.344338] Kernel panic - not syncing: panic_on_warn set ... [ 42.344338] [ 42.351692] CPU: 0 PID: 3626 Comm: syz-executor4 Tainted: G B 4.16.0+ #82 RESULT: signal 0, coverage 0 errno 0 RESULT: signal 0, coverage 0 errno 0 [ 42.359817] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.369230] Call Trace: [ 42.371801] dump_stack+0x185/0x1d0 [ 42.375403] panic+0x39d/0x940 [ 42.378603] ? netlink_sendmsg+0xb26/0x1310 [ 42.382954] kmsan_report+0x238/0x240 [ 42.386740] __msan_warning_32+0x6c/0xb0 [ 42.390788] netlink_sendmsg+0xb26/0x1310 [ 42.394939] ? netlink_getsockopt+0xc80/0xc80 [ 42.399410] ___sys_sendmsg+0xec0/0x1310 [ 42.403470] ? __fdget+0x4e/0x60 [ 42.406828] ? __fget_light+0x56/0x710 [ 42.410692] ? __fdget+0x4e/0x60 RESULT: signal 0, coverage 0 errno 0 [ 42.414032] ? __msan_metadata_ptr_for_load_1+0x10/0x20 [ 42.419368] ? __fget_light+0x6b9/0x710 [ 42.423338] SYSC_sendmsg+0x2a3/0x3d0 [ 42.427153] SyS_sendmsg+0x54/0x80 [ 42.430687] do_syscall_64+0x309/0x430 [ 42.434558] ? ___sys_sendmsg+0x1310/0x1310 [ 42.438866] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 42.444049] RIP: 0033:0x455259 [ 42.447211] RSP: 002b:00007fd9af739c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 42.455240] RAX: ffffffffffffffda RBX: 00007fd9af73a6d4 RCX: 0000000000455259 [ 42.462488] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 [ 42.469743] RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 [ 42.476987] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 42.484232] R13: 00000000000004f1 R14: 00000000006fa738 R15: 0000000000000000 [ 42.491858] Dumping ftrace buffer: [ 42.495372] (ftrace buffer empty) [ 42.499477] Kernel Offset: disabled [ 42.503079] Rebooting in 86400 seconds..