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 '10.128.0.51' (ECDSA) to the list of known hosts. 2018/04/08 11:05:40 parsed 1 programs 2018/04/08 11:05:40 executed programs: 0 syzkaller login: [ 32.380869] ================================================================== [ 32.388273] BUG: KMSAN: uninit-value in sctp_sendmsg+0x1ced/0x6020 [ 32.394594] CPU: 1 PID: 3611 Comm: syz-executor3 Not tainted 4.16.0+ #82 [ 32.401437] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.410788] Call Trace: [ 32.413384] dump_stack+0x185/0x1d0 [ 32.417016] ? sctp_sendmsg+0x1ced/0x6020 [ 32.421162] kmsan_report+0x142/0x240 [ 32.424962] __msan_warning_32+0x6c/0xb0 [ 32.429032] sctp_sendmsg+0x1ced/0x6020 [ 32.433007] ? __local_bh_enable_ip+0x3b/0x140 [ 32.437588] ? local_bh_enable+0x36/0x40 [ 32.441648] ? kmsan_set_origin_inline+0x6b/0x120 [ 32.446507] ? sctp_getsockopt+0x145b0/0x145b0 [ 32.451086] inet_sendmsg+0x48d/0x740 [ 32.454891] ? inet_getname+0x500/0x500 [ 32.458864] SYSC_sendto+0x6c3/0x7e0 [ 32.462577] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 32.468023] ? prepare_exit_to_usermode+0x149/0x3a0 [ 32.473047] SyS_sendto+0x8a/0xb0 [ 32.476513] do_syscall_64+0x309/0x430 RESULT: signal 0, coverage 0 errno 0 RESULT: signal 0, coverage 0 errno 0 [ 32.480420] ? SYSC_getpeername+0x560/0x560 [ 32.484744] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 32.489928] RIP: 0033:0x455259 [ 32.493110] RSP: 002b:00007f4c452a7c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 32.500810] RAX: ffffffffffffffda RBX: 00007f4c452a86d4 RCX: 0000000000455259 [ 32.508076] RDX: 0000000000000001 RSI: 0000000020000140 RDI: 0000000000000003 [ 32.515338] RBP: 000000000072bea0 R08: 00000000209e1000 R09: 0000000000000010 [ 32.522604] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff RESULT: signal 0, coverage 0 errno 0 [ 32.529863] R13: 00000000000004f8 R14: 00000000006fa7e0 R15: 0000000000000000 [ 32.537124] [ 32.538739] Local variable description: ----address@SYSC_sendto [ 32.544784] Variable was created at: [ 32.548498] SYSC_sendto+0xb8/0x7e0 [ 32.552125] SyS_sendto+0x8a/0xb0 [ 32.555560] ================================================================== [ 32.562992] Disabling lock debugging due to kernel taint [ 32.568431] Kernel panic - not syncing: panic_on_warn set ... [ 32.568431] RESULT: signal 0, coverage 0 errno 0 [ 32.575790] CPU: 1 PID: 3611 Comm: syz-executor3 Tainted: G B 4.16.0+ #82 [ 32.583914] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.593256] Call Trace: [ 32.595844] dump_stack+0x185/0x1d0 [ 32.599474] panic+0x39d/0x940 [ 32.602686] ? sctp_sendmsg+0x1ced/0x6020 [ 32.606832] kmsan_report+0x238/0x240 [ 32.610632] __msan_warning_32+0x6c/0xb0 [ 32.614693] sctp_sendmsg+0x1ced/0x6020 [ 32.618670] ? __local_bh_enable_ip+0x3b/0x140 [ 32.623252] ? local_bh_enable+0x36/0x40 [ 32.627315] ? kmsan_set_origin_inline+0x6b/0x120 RESULT: signal 0, coverage 0 errno 0 [ 32.632167] ? sctp_getsockopt+0x145b0/0x145b0 [ 32.636745] inet_sendmsg+0x48d/0x740 [ 32.640546] ? inet_getname+0x500/0x500 [ 32.644521] SYSC_sendto+0x6c3/0x7e0 [ 32.648232] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 32.653766] ? prepare_exit_to_usermode+0x149/0x3a0 [ 32.658790] SyS_sendto+0x8a/0xb0 [ 32.662243] do_syscall_64+0x309/0x430 [ 32.666128] ? SYSC_getpeername+0x560/0x560 [ 32.670449] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 32.675632] RIP: 0033:0x455259 RESULT: signal 0, coverage 0 errno 0 RESULT: signal 0, coverage 0 errno 0 [ 32.678810] RSP: 002b:00007f4c452a7c68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 32.686515] RAX: ffffffffffffffda RBX: 00007f4c452a86d4 RCX: 0000000000455259 [ 32.693792] RDX: 0000000000000001 RSI: 0000000020000140 RDI: 0000000000000003 [ 32.701082] RBP: 000000000072bea0 R08: 00000000209e1000 R09: 0000000000000010 [ 32.708352] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 32.715626] R13: 00000000000004f8 R14: 00000000006fa7e0 R15: 0000000000000000 [ 32.723402] Dumping ftrace buffer: [ 32.726926] (ftrace buffer empty) [ 32.730607] Kernel Offset: disabled [ 32.734206] Rebooting in 86400 seconds..