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 '10.128.10.55' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 41.086867] ================================================================== [ 41.094288] BUG: KMSAN: uninit-value in pointer+0x11e5/0x1410 [ 41.100158] CPU: 1 PID: 4524 Comm: syz-executor482 Not tainted 4.16.0+ #87 [ 41.107147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.116488] Call Trace: [ 41.119064] dump_stack+0x185/0x1d0 [ 41.122671] ? pointer+0x11e5/0x1410 [ 41.126377] kmsan_report+0x142/0x240 [ 41.130163] __msan_warning_32+0x6c/0xb0 [ 41.134206] ? proc_pid_stack+0x251/0x470 [ 41.138351] pointer+0x11e5/0x1410 [ 41.141881] ? proc_pid_stack+0x26a/0x470 [ 41.146022] vsnprintf+0xa2d/0x33c0 [ 41.149655] seq_printf+0x29f/0x420 [ 41.153271] ? proc_pid_stack+0x26a/0x470 [ 41.157399] ? proc_pid_stack+0x26a/0x470 [ 41.161528] ? proc_pid_stack+0x26a/0x470 [ 41.165655] proc_pid_stack+0x326/0x470 [ 41.169612] proc_single_show+0x1af/0x300 [ 41.173744] ? proc_pid_wchan+0x250/0x250 [ 41.177896] ? proc_single_open+0x90/0x90 [ 41.182034] seq_read+0xc7d/0x2260 [ 41.185578] ? __fsnotify_parent+0x75/0x560 [ 41.189885] ? seq_open+0x360/0x360 [ 41.193493] __vfs_read+0x1a5/0x9b0 [ 41.197114] vfs_read+0x36c/0x6c0 [ 41.200559] SYSC_read+0x172/0x360 [ 41.204092] SyS_read+0x55/0x80 [ 41.207362] do_syscall_64+0x309/0x430 [ 41.211342] ? vfs_write+0x8d0/0x8d0 [ 41.215047] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 41.220217] RIP: 0033:0x440089 [ 41.223385] RSP: 002b:00007fff2e049c88 EFLAGS: 00000213 ORIG_RAX: 0000000000000000 [ 41.231077] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440089 [ 41.238330] RDX: 0000000000000086 RSI: 0000000020000040 RDI: 0000000000000003 [ 41.245581] RBP: 00000000006ca018 R08: 0000000000000010 R09: 65732f636f72702f [ 41.252855] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401910 [ 41.260107] R13: 00000000004019a0 R14: 0000000000000000 R15: 0000000000000000 [ 41.267360] [ 41.268965] Uninit was stored to memory at: [ 41.273271] kmsan_internal_chain_origin+0x12b/0x210 [ 41.278376] __msan_chain_origin+0x69/0xc0 [ 41.282593] __save_stack_trace+0x829/0xb00 [ 41.286898] save_stack_trace_tsk+0x258/0x2f0 [ 41.291374] proc_pid_stack+0x26a/0x470 [ 41.295334] proc_single_show+0x1af/0x300 [ 41.299458] seq_read+0xc7d/0x2260 [ 41.302991] __vfs_read+0x1a5/0x9b0 [ 41.306601] vfs_read+0x36c/0x6c0 [ 41.310040] SYSC_read+0x172/0x360 [ 41.313560] SyS_read+0x55/0x80 [ 41.316834] do_syscall_64+0x309/0x430 [ 41.320705] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 41.325873] Uninit was stored to memory at: [ 41.330181] kmsan_internal_chain_origin+0x12b/0x210 [ 41.335262] __msan_chain_origin+0x69/0xc0 [ 41.339476] update_stack_state+0x959/0xa40 [ 41.343775] unwind_next_frame+0x618/0xe50 [ 41.348003] __save_stack_trace+0x734/0xb00 [ 41.352327] save_stack_trace_tsk+0x258/0x2f0 [ 41.356806] proc_pid_stack+0x26a/0x470 [ 41.360760] proc_single_show+0x1af/0x300 [ 41.364887] seq_read+0xc7d/0x2260 [ 41.368405] __vfs_read+0x1a5/0x9b0 [ 41.372026] vfs_read+0x36c/0x6c0 [ 41.375461] SYSC_read+0x172/0x360 [ 41.379003] SyS_read+0x55/0x80 [ 41.382269] do_syscall_64+0x309/0x430 [ 41.386134] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 41.391311] Local variable description: ----wait.i@try_charge [ 41.397192] Variable was created at: [ 41.400901] try_charge+0x105/0x2fd0 [ 41.404592] mem_cgroup_try_charge+0xa80/0xf00 [ 41.409148] ================================================================== [ 41.416483] Disabling lock debugging due to kernel taint [ 41.421908] Kernel panic - not syncing: panic_on_warn set ... [ 41.421908] [ 41.429261] CPU: 1 PID: 4524 Comm: syz-executor482 Tainted: G B 4.16.0+ #87 [ 41.437550] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.446880] Call Trace: [ 41.449466] dump_stack+0x185/0x1d0 [ 41.453076] panic+0x39d/0x940 [ 41.456255] ? pointer+0x11e5/0x1410 [ 41.459945] kmsan_report+0x238/0x240 [ 41.463726] __msan_warning_32+0x6c/0xb0 [ 41.467767] ? proc_pid_stack+0x251/0x470 [ 41.471895] pointer+0x11e5/0x1410 [ 41.475416] ? proc_pid_stack+0x26a/0x470 [ 41.479551] vsnprintf+0xa2d/0x33c0 [ 41.483170] seq_printf+0x29f/0x420 [ 41.486784] ? proc_pid_stack+0x26a/0x470 [ 41.490957] ? proc_pid_stack+0x26a/0x470 [ 41.495092] ? proc_pid_stack+0x26a/0x470 [ 41.499227] proc_pid_stack+0x326/0x470 [ 41.503183] proc_single_show+0x1af/0x300 [ 41.507312] ? proc_pid_wchan+0x250/0x250 [ 41.511439] ? proc_single_open+0x90/0x90 [ 41.515563] seq_read+0xc7d/0x2260 [ 41.519084] ? __fsnotify_parent+0x75/0x560 [ 41.523385] ? seq_open+0x360/0x360 [ 41.526996] __vfs_read+0x1a5/0x9b0 [ 41.530614] vfs_read+0x36c/0x6c0 [ 41.534054] SYSC_read+0x172/0x360 [ 41.537580] SyS_read+0x55/0x80 [ 41.540841] do_syscall_64+0x309/0x430 [ 41.544709] ? vfs_write+0x8d0/0x8d0 [ 41.548431] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 41.553599] RIP: 0033:0x440089 [ 41.556776] RSP: 002b:00007fff2e049c88 EFLAGS: 00000213 ORIG_RAX: 0000000000000000 [ 41.564462] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440089 [ 41.571710] RDX: 0000000000000086 RSI: 0000000020000040 RDI: 0000000000000003 [ 41.578971] RBP: 00000000006ca018 R08: 0000000000000010 R09: 65732f636f72702f [ 41.586233] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401910 [ 41.593483] R13: 00000000004019a0 R14: 0000000000000000 R15: 0000000000000000 [ 41.601247] Dumping ftrace buffer: [ 41.604776] (ftrace buffer empty) [ 41.608463] Kernel Offset: disabled [ 41.612068] Rebooting in 86400 seconds..