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 '10.128.0.49' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 28.682103] ================================================================== [ 28.689502] BUG: KMSAN: uninit-value in tipc_subscrb_rcv_cb+0x418/0xe80 [ 28.696229] CPU: 0 PID: 19 Comm: kworker/u4:1 Not tainted 4.16.0+ #83 [ 28.702777] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.712115] Workqueue: tipc_rcv tipc_recv_work [ 28.716671] Call Trace: [ 28.719232] dump_stack+0x185/0x1d0 [ 28.722834] ? tipc_subscrb_rcv_cb+0x418/0xe80 [ 28.727389] kmsan_report+0x142/0x240 [ 28.731173] __msan_warning_32+0x6c/0xb0 [ 28.735208] tipc_subscrb_rcv_cb+0x418/0xe80 [ 28.739594] tipc_receive_from_sock+0x64c/0x800 [ 28.744236] ? tipc_topsrv_start+0x650/0x650 [ 28.748619] ? tipc_accept_from_sock+0x610/0x610 [ 28.753359] tipc_recv_work+0xd8/0x1f0 [ 28.757223] ? tipc_send_work+0xe20/0xe20 [ 28.761344] process_one_work+0x12c6/0x1f60 [ 28.765644] worker_thread+0x113c/0x24f0 [ 28.769683] ? process_one_work+0x1f60/0x1f60 [ 28.774151] kthread+0x539/0x720 [ 28.777494] ? process_one_work+0x1f60/0x1f60 [ 28.781966] ? kthread_blkcg+0xf0/0xf0 [ 28.785830] ret_from_fork+0x35/0x40 [ 28.789513] [ 28.791111] Uninit was created at: [ 28.794631] kmsan_internal_poison_shadow+0xb8/0x1b0 [ 28.799717] kmsan_kmalloc+0x94/0x100 [ 28.803492] kmem_cache_alloc+0xaab/0xb90 [ 28.807612] tipc_receive_from_sock+0x15c/0x800 [ 28.812263] tipc_recv_work+0xd8/0x1f0 [ 28.816132] process_one_work+0x12c6/0x1f60 [ 28.820425] worker_thread+0x113c/0x24f0 [ 28.824457] kthread+0x539/0x720 [ 28.827796] ret_from_fork+0x35/0x40 [ 28.831477] ================================================================== [ 28.838804] Disabling lock debugging due to kernel taint [ 28.844225] Kernel panic - not syncing: panic_on_warn set ... [ 28.844225] [ 28.851562] CPU: 0 PID: 19 Comm: kworker/u4:1 Tainted: G B 4.16.0+ #83 [ 28.859412] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.868743] Workqueue: tipc_rcv tipc_recv_work [ 28.873294] Call Trace: [ 28.875857] dump_stack+0x185/0x1d0 [ 28.879461] panic+0x39d/0x940 [ 28.882636] ? tipc_subscrb_rcv_cb+0x418/0xe80 [ 28.887189] kmsan_report+0x238/0x240 [ 28.890966] __msan_warning_32+0x6c/0xb0 [ 28.895000] tipc_subscrb_rcv_cb+0x418/0xe80 [ 28.899392] tipc_receive_from_sock+0x64c/0x800 [ 28.904045] ? tipc_topsrv_start+0x650/0x650 [ 28.908429] ? tipc_accept_from_sock+0x610/0x610 [ 28.913167] tipc_recv_work+0xd8/0x1f0 [ 28.917037] ? tipc_send_work+0xe20/0xe20 [ 28.921165] process_one_work+0x12c6/0x1f60 [ 28.925553] worker_thread+0x113c/0x24f0 [ 28.929591] ? process_one_work+0x1f60/0x1f60 [ 28.934060] kthread+0x539/0x720 [ 28.937398] ? process_one_work+0x1f60/0x1f60 [ 28.941868] ? kthread_blkcg+0xf0/0xf0 [ 28.945730] ret_from_fork+0x35/0x40 [ 28.949936] Dumping ftrace buffer: [ 28.953457] (ftrace buffer empty) [ 28.957141] Kernel Offset: disabled [ 28.960754] Rebooting in 86400 seconds..