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 '10.128.0.62' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 43.236235] ================================================================== [ 43.243639] BUG: KMSAN: uninit-value in pointer+0x11e5/0x1410 [ 43.249516] CPU: 1 PID: 4486 Comm: syz-executor698 Not tainted 4.16.0+ #87 [ 43.256517] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.265859] Call Trace: [ 43.268429] dump_stack+0x185/0x1d0 [ 43.272042] ? pointer+0x11e5/0x1410 [ 43.275745] kmsan_report+0x142/0x240 [ 43.279528] __msan_warning_32+0x6c/0xb0 [ 43.283570] ? proc_pid_stack+0x251/0x470 [ 43.287695] pointer+0x11e5/0x1410 [ 43.291215] ? proc_pid_stack+0x26a/0x470 [ 43.295340] vsnprintf+0xa2d/0x33c0 [ 43.298954] seq_printf+0x29f/0x420 [ 43.302584] ? save_stack_trace_tsk+0x26a/0x2f0 [ 43.307230] ? proc_pid_stack+0x26a/0x470 [ 43.311358] ? proc_pid_stack+0x26a/0x470 [ 43.315483] ? proc_pid_stack+0x26a/0x470 [ 43.319622] proc_pid_stack+0x326/0x470 [ 43.323578] proc_single_show+0x1af/0x300 [ 43.327707] ? proc_pid_wchan+0x250/0x250 [ 43.331833] ? proc_single_open+0x90/0x90 [ 43.335962] seq_read+0xc7d/0x2260 [ 43.339486] ? __vfs_read+0xc9/0x9b0 [ 43.343177] ? seq_open+0x360/0x360 [ 43.346786] __vfs_read+0x1a5/0x9b0 [ 43.350405] vfs_read+0x36c/0x6c0 [ 43.353839] SYSC_pread64+0x275/0x310 [ 43.357621] SyS_pread64+0x65/0x90 [ 43.361140] do_syscall_64+0x309/0x430 [ 43.365005] ? SYSC_write+0x360/0x360 [ 43.368786] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 43.373956] RIP: 0033:0x440089 [ 43.377123] RSP: 002b:00007ffc0b97c878 EFLAGS: 00000213 ORIG_RAX: 0000000000000011 [ 43.384819] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440089 [ 43.392073] RDX: 00000000ffffff72 RSI: 0000000020003c00 RDI: 0000000000000003 [ 43.399330] RBP: 00000000006ca018 R08: 0000000000000010 R09: 65732f636f72702f [ 43.406579] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401910 [ 43.413828] R13: 00000000004019a0 R14: 0000000000000000 R15: 0000000000000000 [ 43.421077] [ 43.422991] Uninit was stored to memory at: [ 43.427302] kmsan_internal_chain_origin+0x12b/0x210 [ 43.432383] __msan_chain_origin+0x69/0xc0 [ 43.436611] __save_stack_trace+0x829/0xb00 [ 43.440911] save_stack_trace_tsk+0x258/0x2f0 [ 43.445385] proc_pid_stack+0x26a/0x470 [ 43.449338] proc_single_show+0x1af/0x300 [ 43.453464] seq_read+0xc7d/0x2260 [ 43.456982] __vfs_read+0x1a5/0x9b0 [ 43.460585] vfs_read+0x36c/0x6c0 [ 43.464024] SYSC_pread64+0x275/0x310 [ 43.467810] SyS_pread64+0x65/0x90 [ 43.471329] do_syscall_64+0x309/0x430 [ 43.475198] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 43.480359] Uninit was stored to memory at: [ 43.484658] kmsan_internal_chain_origin+0x12b/0x210 [ 43.489738] __msan_chain_origin+0x69/0xc0 [ 43.493953] update_stack_state+0x959/0xa40 [ 43.498252] unwind_next_frame+0x618/0xe50 [ 43.502467] __save_stack_trace+0x734/0xb00 [ 43.506767] save_stack_trace_tsk+0x258/0x2f0 [ 43.511240] proc_pid_stack+0x26a/0x470 [ 43.515192] proc_single_show+0x1af/0x300 [ 43.519316] seq_read+0xc7d/0x2260 [ 43.522836] __vfs_read+0x1a5/0x9b0 [ 43.526444] vfs_read+0x36c/0x6c0 [ 43.529875] SYSC_pread64+0x275/0x310 [ 43.533663] SyS_pread64+0x65/0x90 [ 43.537180] do_syscall_64+0x309/0x430 [ 43.541047] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 43.546210] Local variable description: ----wait.i@try_charge [ 43.552072] Variable was created at: [ 43.555774] try_charge+0x105/0x2fd0 [ 43.559465] mem_cgroup_try_charge+0xa80/0xf00 [ 43.564023] ================================================================== [ 43.571365] Disabling lock debugging due to kernel taint [ 43.576790] Kernel panic - not syncing: panic_on_warn set ... [ 43.576790] [ 43.584136] CPU: 1 PID: 4486 Comm: syz-executor698 Tainted: G B 4.16.0+ #87 [ 43.592427] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.601758] Call Trace: [ 43.604326] dump_stack+0x185/0x1d0 [ 43.607934] panic+0x39d/0x940 [ 43.611115] ? pointer+0x11e5/0x1410 [ 43.614807] kmsan_report+0x238/0x240 [ 43.618589] __msan_warning_32+0x6c/0xb0 [ 43.622632] ? proc_pid_stack+0x251/0x470 [ 43.626760] pointer+0x11e5/0x1410 [ 43.630280] ? proc_pid_stack+0x26a/0x470 [ 43.634407] vsnprintf+0xa2d/0x33c0 [ 43.638015] seq_printf+0x29f/0x420 [ 43.641633] ? save_stack_trace_tsk+0x26a/0x2f0 [ 43.646287] ? proc_pid_stack+0x26a/0x470 [ 43.650424] ? proc_pid_stack+0x26a/0x470 [ 43.654549] ? proc_pid_stack+0x26a/0x470 [ 43.658675] proc_pid_stack+0x326/0x470 [ 43.662631] proc_single_show+0x1af/0x300 [ 43.666758] ? proc_pid_wchan+0x250/0x250 [ 43.670883] ? proc_single_open+0x90/0x90 [ 43.675017] seq_read+0xc7d/0x2260 [ 43.678538] ? __vfs_read+0xc9/0x9b0 [ 43.682229] ? seq_open+0x360/0x360 [ 43.685833] __vfs_read+0x1a5/0x9b0 [ 43.689443] vfs_read+0x36c/0x6c0 [ 43.692875] SYSC_pread64+0x275/0x310 [ 43.696658] SyS_pread64+0x65/0x90 [ 43.700177] do_syscall_64+0x309/0x430 [ 43.704057] ? SYSC_write+0x360/0x360 [ 43.707847] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 43.713013] RIP: 0033:0x440089 [ 43.716179] RSP: 002b:00007ffc0b97c878 EFLAGS: 00000213 ORIG_RAX: 0000000000000011 [ 43.723872] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440089 [ 43.731120] RDX: 00000000ffffff72 RSI: 0000000020003c00 RDI: 0000000000000003 [ 43.738368] RBP: 00000000006ca018 R08: 0000000000000010 R09: 65732f636f72702f [ 43.745617] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401910 [ 43.752864] R13: 00000000004019a0 R14: 0000000000000000 R15: 0000000000000000 [ 43.760605] Dumping ftrace buffer: [ 43.764142] (ftrace buffer empty) [ 43.767826] Kernel Offset: disabled [ 43.771427] Rebooting in 86400 seconds..