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 '10.128.10.41' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 43.714550] IPVS: ftp: loaded support on port[0] = 21 [ 43.743089] IPVS: set_ctl: invalid protocol: 13703 39.52.93.236:60696 Ɓtpm`x/.HݼބDBC+F [ 43.753448] ================================================================== [ 43.760814] BUG: KMSAN: uninit-value in do_syslog+0x397b/0x3c20 [ 43.766855] CPU: 0 PID: 4397 Comm: rsyslogd Not tainted 4.16.0+ #87 [ 43.773236] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.782571] Call Trace: [ 43.785153] dump_stack+0x185/0x1d0 [ 43.788770] ? kmsan_internal_check_memory+0x116/0x1e0 [ 43.794033] kmsan_report+0x142/0x240 [ 43.797823] kmsan_internal_check_memory+0x135/0x1e0 [ 43.802903] kmsan_copy_to_user+0x69/0x160 [ 43.807129] do_syslog+0x397b/0x3c20 [ 43.810824] ? init_wait_entry+0x1a0/0x1a0 [ 43.815058] kmsg_read+0x142/0x1a0 [ 43.818586] ? mmap_vmcore_fault+0x30/0x30 [ 43.822800] proc_reg_read+0x1de/0x2f0 [ 43.826669] ? proc_reg_llseek+0x260/0x260 [ 43.830888] __vfs_read+0x1a5/0x9b0 [ 43.834501] vfs_read+0x36c/0x6c0 [ 43.837946] SYSC_read+0x172/0x360 [ 43.841466] SyS_read+0x55/0x80 [ 43.844731] do_syscall_64+0x309/0x430 [ 43.848601] ? vfs_write+0x8d0/0x8d0 [ 43.852298] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 43.857467] RIP: 0033:0x7f869ef1b1fd [ 43.861164] RSP: 002b:00007f869c4bae30 EFLAGS: 00000293 ORIG_RAX: 0000000000000000 [ 43.868849] RAX: ffffffffffffffda RBX: 0000000001ffdce0 RCX: 00007f869ef1b1fd [ 43.876112] RDX: 0000000000000fff RSI: 00007f869dcef5a0 RDI: 0000000000000004 [ 43.883359] RBP: 0000000000000000 R08: 0000000001fe9260 R09: 0000000004000001 [ 43.890608] R10: 0000000000000001 R11: 0000000000000293 R12: 000000000065e420 [ 43.897857] R13: 00007f869c4bb9c0 R14: 00007f869f560040 R15: 0000000000000003 [ 43.905107] [ 43.906710] Uninit was created at: [ 43.910248] kmsan_internal_poison_shadow+0xb8/0x1b0 [ 43.915335] kmsan_kmalloc+0x94/0x100 [ 43.919116] __kmalloc+0x23c/0x350 [ 43.922641] do_syslog+0x31d3/0x3c20 [ 43.926334] kmsg_read+0x142/0x1a0 [ 43.929858] proc_reg_read+0x1de/0x2f0 [ 43.933727] __vfs_read+0x1a5/0x9b0 [ 43.937333] vfs_read+0x36c/0x6c0 [ 43.940771] SYSC_read+0x172/0x360 [ 43.944288] SyS_read+0x55/0x80 [ 43.947547] do_syscall_64+0x309/0x430 [ 43.951416] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 43.956583] [ 43.958185] Bytes 108-109 of 111 are uninitialized [ 43.963090] ================================================================== [ 43.970432] Disabling lock debugging due to kernel taint [ 43.975864] Kernel panic - not syncing: panic_on_warn set ... [ 43.975864] [ 43.983205] CPU: 0 PID: 4397 Comm: rsyslogd Tainted: G B 4.16.0+ #87 [ 43.990890] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.000237] Call Trace: [ 44.002811] dump_stack+0x185/0x1d0 [ 44.006419] panic+0x39d/0x940 [ 44.009603] ? kmsan_internal_check_memory+0x116/0x1e0 [ 44.014867] kmsan_report+0x238/0x240 [ 44.018652] kmsan_internal_check_memory+0x135/0x1e0 [ 44.023742] kmsan_copy_to_user+0x69/0x160 [ 44.027970] do_syslog+0x397b/0x3c20 [ 44.031666] ? init_wait_entry+0x1a0/0x1a0 [ 44.035886] kmsg_read+0x142/0x1a0 [ 44.039406] ? mmap_vmcore_fault+0x30/0x30 [ 44.043618] proc_reg_read+0x1de/0x2f0 [ 44.047501] ? proc_reg_llseek+0x260/0x260 [ 44.051718] __vfs_read+0x1a5/0x9b0 [ 44.055330] vfs_read+0x36c/0x6c0 [ 44.058765] SYSC_read+0x172/0x360 [ 44.062291] SyS_read+0x55/0x80 [ 44.065549] do_syscall_64+0x309/0x430 [ 44.069418] ? vfs_write+0x8d0/0x8d0 [ 44.073122] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 44.078289] RIP: 0033:0x7f869ef1b1fd [ 44.081977] RSP: 002b:00007f869c4bae30 EFLAGS: 00000293 ORIG_RAX: 0000000000000000 [ 44.089660] RAX: ffffffffffffffda RBX: 0000000001ffdce0 RCX: 00007f869ef1b1fd [ 44.096907] RDX: 0000000000000fff RSI: 00007f869dcef5a0 RDI: 0000000000000004 [ 44.104154] RBP: 0000000000000000 R08: 0000000001fe9260 R09: 0000000004000001 [ 44.111405] R10: 0000000000000001 R11: 0000000000000293 R12: 000000000065e420 [ 44.118654] R13: 00007f869c4bb9c0 R14: 00007f869f560040 R15: 0000000000000003 [ 44.126381] Dumping ftrace buffer: [ 44.129901] (ftrace buffer empty) [ 44.133585] Kernel Offset: disabled [ 44.137193] Rebooting in 86400 seconds..