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 '10.128.10.15' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 32.351426] ================================================================== [ 32.358854] BUG: KMSAN: uninit-value in inet_csk_bind_conflict+0x5f9/0x990 [ 32.365876] CPU: 0 PID: 3582 Comm: syzkaller197481 Not tainted 4.16.0+ #83 [ 32.372901] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.382263] Call Trace: [ 32.384867] dump_stack+0x185/0x1d0 [ 32.388509] ? inet_csk_bind_conflict+0x5f9/0x990 [ 32.393360] kmsan_report+0x142/0x240 [ 32.397175] __msan_warning_32+0x6c/0xb0 [ 32.401241] inet_csk_bind_conflict+0x5f9/0x990 [ 32.405922] inet_csk_get_port+0x1d28/0x1e40 [ 32.410347] ? __msan_poison_alloca+0x15c/0x1d0 [ 32.415029] ? local_bh_enable+0x36/0x40 [ 32.419113] ? __local_bh_enable_ip+0x3b/0x140 [ 32.423788] ? local_bh_enable+0x36/0x40 [ 32.427858] ? inet_get_local_port_range+0x2d0/0x2d0 [ 32.433013] inet6_bind+0x121c/0x1820 [ 32.436817] ? ipv6_mod_enabled+0x60/0x60 [ 32.440963] SYSC_bind+0x3f2/0x4b0 [ 32.444500] SyS_bind+0x54/0x80 [ 32.447770] do_syscall_64+0x309/0x430 [ 32.451648] ? SYSC_socketpair+0x14a0/0x14a0 [ 32.456049] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 32.461214] RIP: 0033:0x4417e9 [ 32.464377] RSP: 002b:00007fff47dbfde8 EFLAGS: 00000217 ORIG_RAX: 0000000000000031 [ 32.472065] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004417e9 [ 32.479311] RDX: 000000000000001c RSI: 0000000020000000 RDI: 0000000000000003 [ 32.486560] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 [ 32.493807] R10: 0000000000000004 R11: 0000000000000217 R12: 0000000000007e50 [ 32.501056] R13: 00000000006cd448 R14: 0000000000000000 R15: 0000000000000000 [ 32.508306] [ 32.509909] Uninit was stored to memory at: [ 32.514215] kmsan_internal_chain_origin+0x12b/0x210 [ 32.519295] __msan_chain_origin+0x69/0xc0 [ 32.523509] inet_twsk_alloc+0xaef/0xc00 [ 32.527546] tcp_time_wait+0xd9/0xf50 [ 32.531325] tcp_rcv_state_process+0xebe/0x6490 [ 32.535972] tcp_v4_do_rcv+0xb26/0xd90 [ 32.539836] __release_sock+0x2d6/0x680 [ 32.543785] release_sock+0x97/0x2a0 [ 32.547474] tcp_close+0x277/0x18f0 [ 32.551077] inet_release+0x240/0x2a0 [ 32.554856] sock_close+0xe0/0x300 [ 32.558375] __fput+0x49e/0xa10 [ 32.561632] ____fput+0x37/0x40 [ 32.564899] task_work_run+0x243/0x2c0 [ 32.568776] do_exit+0x10e1/0x38d0 [ 32.572290] do_group_exit+0x1a0/0x360 [ 32.576153] SYSC_exit_group+0x21/0x30 [ 32.580027] SyS_exit_group+0x25/0x30 [ 32.583818] do_syscall_64+0x309/0x430 [ 32.587685] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 32.592844] Uninit was created at: [ 32.596367] kmsan_internal_poison_shadow+0xb8/0x1b0 [ 32.601459] kmsan_kmalloc+0x94/0x100 [ 32.605258] kmem_cache_alloc+0xaab/0xb90 [ 32.609386] inet_twsk_alloc+0x13b/0xc00 [ 32.613431] tcp_time_wait+0xd9/0xf50 [ 32.617219] tcp_rcv_state_process+0xebe/0x6490 [ 32.621877] tcp_v4_do_rcv+0xb26/0xd90 [ 32.625743] __release_sock+0x2d6/0x680 [ 32.629700] release_sock+0x97/0x2a0 [ 32.633391] tcp_close+0x277/0x18f0 [ 32.637003] inet_release+0x240/0x2a0 [ 32.640788] sock_close+0xe0/0x300 [ 32.644303] __fput+0x49e/0xa10 [ 32.647560] ____fput+0x37/0x40 [ 32.650818] task_work_run+0x243/0x2c0 [ 32.654681] do_exit+0x10e1/0x38d0 [ 32.658196] do_group_exit+0x1a0/0x360 [ 32.662067] SYSC_exit_group+0x21/0x30 [ 32.665945] SyS_exit_group+0x25/0x30 [ 32.669732] do_syscall_64+0x309/0x430 [ 32.673600] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 32.678779] ================================================================== [ 32.686211] Disabling lock debugging due to kernel taint [ 32.691640] Kernel panic - not syncing: panic_on_warn set ... [ 32.691640] [ 32.698987] CPU: 0 PID: 3582 Comm: syzkaller197481 Tainted: G B 4.16.0+ #83 [ 32.707277] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.716618] Call Trace: [ 32.719207] dump_stack+0x185/0x1d0 [ 32.722824] panic+0x39d/0x940 [ 32.726008] ? inet_csk_bind_conflict+0x5f9/0x990 [ 32.730837] kmsan_report+0x238/0x240 [ 32.734618] __msan_warning_32+0x6c/0xb0 [ 32.738659] inet_csk_bind_conflict+0x5f9/0x990 [ 32.743311] inet_csk_get_port+0x1d28/0x1e40 [ 32.747701] ? __msan_poison_alloca+0x15c/0x1d0 [ 32.752356] ? local_bh_enable+0x36/0x40 [ 32.756401] ? __local_bh_enable_ip+0x3b/0x140 [ 32.760959] ? local_bh_enable+0x36/0x40 [ 32.765004] ? inet_get_local_port_range+0x2d0/0x2d0 [ 32.770094] inet6_bind+0x121c/0x1820 [ 32.773877] ? ipv6_mod_enabled+0x60/0x60 [ 32.778002] SYSC_bind+0x3f2/0x4b0 [ 32.781546] SyS_bind+0x54/0x80 [ 32.784811] do_syscall_64+0x309/0x430 [ 32.788684] ? SYSC_socketpair+0x14a0/0x14a0 [ 32.793082] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 32.798253] RIP: 0033:0x4417e9 [ 32.801418] RSP: 002b:00007fff47dbfde8 EFLAGS: 00000217 ORIG_RAX: 0000000000000031 [ 32.809122] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004417e9 [ 32.816378] RDX: 000000000000001c RSI: 0000000020000000 RDI: 0000000000000003 [ 32.823635] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 [ 32.830886] R10: 0000000000000004 R11: 0000000000000217 R12: 0000000000007e50 [ 32.838134] R13: 00000000006cd448 R14: 0000000000000000 R15: 0000000000000000 [ 32.845907] Dumping ftrace buffer: [ 32.849449] (ftrace buffer empty) [ 32.853143] Kernel Offset: disabled [ 32.856744] Rebooting in 86400 seconds..