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 '10.128.0.34' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 43.750141] ================================================================== [ 43.757549] BUG: KMSAN: uninit-value in pointer+0x11e5/0x1410 [ 43.763413] CPU: 0 PID: 4509 Comm: syz-executor104 Not tainted 4.16.0+ #87 [ 43.770574] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.779910] Call Trace: [ 43.782484] dump_stack+0x185/0x1d0 [ 43.786103] ? pointer+0x11e5/0x1410 [ 43.789805] kmsan_report+0x142/0x240 [ 43.793602] __msan_warning_32+0x6c/0xb0 [ 43.797647] ? proc_pid_stack+0x251/0x470 [ 43.801773] pointer+0x11e5/0x1410 [ 43.805291] ? proc_pid_stack+0x26a/0x470 [ 43.809415] vsnprintf+0xa2d/0x33c0 [ 43.813038] seq_printf+0x29f/0x420 [ 43.816664] ? save_stack_trace_tsk+0x26a/0x2f0 [ 43.821310] ? proc_pid_stack+0x26a/0x470 [ 43.825435] ? proc_pid_stack+0x26a/0x470 [ 43.829561] ? proc_pid_stack+0x26a/0x470 [ 43.833692] proc_pid_stack+0x326/0x470 [ 43.837655] proc_single_show+0x1af/0x300 [ 43.841782] ? proc_pid_wchan+0x250/0x250 [ 43.845907] ? proc_single_open+0x90/0x90 [ 43.850039] seq_read+0xc7d/0x2260 [ 43.853571] ? __vfs_read+0xc9/0x9b0 [ 43.857263] ? seq_open+0x360/0x360 [ 43.860869] __vfs_read+0x1a5/0x9b0 [ 43.864478] vfs_read+0x36c/0x6c0 [ 43.867913] SYSC_pread64+0x275/0x310 [ 43.871694] SyS_pread64+0x65/0x90 [ 43.875211] do_syscall_64+0x309/0x430 [ 43.879076] ? SYSC_write+0x360/0x360 [ 43.882857] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 43.888032] RIP: 0033:0x440089 [ 43.891209] RSP: 002b:00007ffddb7d4ee8 EFLAGS: 00000213 ORIG_RAX: 0000000000000011 [ 43.898911] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440089 [ 43.906168] RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003 [ 43.913415] RBP: 00000000006ca018 R08: 0000000000000010 R09: 65732f636f72702f [ 43.920662] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401910 [ 43.927910] R13: 00000000004019a0 R14: 0000000000000000 R15: 0000000000000000 [ 43.935174] [ 43.936777] Uninit was stored to memory at: [ 43.941082] kmsan_internal_chain_origin+0x12b/0x210 [ 43.946163] __msan_chain_origin+0x69/0xc0 [ 43.950376] __save_stack_trace+0x829/0xb00 [ 43.954676] save_stack_trace_tsk+0x258/0x2f0 [ 43.959151] proc_pid_stack+0x26a/0x470 [ 43.963105] proc_single_show+0x1af/0x300 [ 43.967230] seq_read+0xc7d/0x2260 [ 43.970749] __vfs_read+0x1a5/0x9b0 [ 43.974352] vfs_read+0x36c/0x6c0 [ 43.977781] SYSC_pread64+0x275/0x310 [ 43.981558] SyS_pread64+0x65/0x90 [ 43.985078] do_syscall_64+0x309/0x430 [ 43.988963] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 43.994127] Uninit was stored to memory at: [ 43.998426] kmsan_internal_chain_origin+0x12b/0x210 [ 44.003507] __msan_chain_origin+0x69/0xc0 [ 44.007721] update_stack_state+0x959/0xa40 [ 44.012030] unwind_next_frame+0x618/0xe50 [ 44.016254] __save_stack_trace+0x734/0xb00 [ 44.020553] save_stack_trace_tsk+0x258/0x2f0 [ 44.025036] proc_pid_stack+0x26a/0x470 [ 44.028993] proc_single_show+0x1af/0x300 [ 44.033120] seq_read+0xc7d/0x2260 [ 44.036638] __vfs_read+0x1a5/0x9b0 [ 44.040250] vfs_read+0x36c/0x6c0 [ 44.043680] SYSC_pread64+0x275/0x310 [ 44.047458] SyS_pread64+0x65/0x90 [ 44.050978] do_syscall_64+0x309/0x430 [ 44.054853] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 44.060114] Local variable description: ----wait.i@try_charge [ 44.065978] Variable was created at: [ 44.069674] try_charge+0x105/0x2fd0 [ 44.073363] mem_cgroup_try_charge+0xa80/0xf00 [ 44.077918] ================================================================== [ 44.085252] Disabling lock debugging due to kernel taint [ 44.090689] Kernel panic - not syncing: panic_on_warn set ... [ 44.090689] [ 44.098041] CPU: 0 PID: 4509 Comm: syz-executor104 Tainted: G B 4.16.0+ #87 [ 44.106355] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.115693] Call Trace: [ 44.118274] dump_stack+0x185/0x1d0 [ 44.121883] panic+0x39d/0x940 [ 44.125072] ? pointer+0x11e5/0x1410 [ 44.128767] kmsan_report+0x238/0x240 [ 44.132548] __msan_warning_32+0x6c/0xb0 [ 44.136594] ? proc_pid_stack+0x251/0x470 [ 44.140720] pointer+0x11e5/0x1410 [ 44.144241] ? proc_pid_stack+0x26a/0x470 [ 44.148366] vsnprintf+0xa2d/0x33c0 [ 44.151988] seq_printf+0x29f/0x420 [ 44.155612] ? save_stack_trace_tsk+0x26a/0x2f0 [ 44.160269] ? proc_pid_stack+0x26a/0x470 [ 44.164394] ? proc_pid_stack+0x26a/0x470 [ 44.168523] ? proc_pid_stack+0x26a/0x470 [ 44.172651] proc_pid_stack+0x326/0x470 [ 44.176606] proc_single_show+0x1af/0x300 [ 44.180734] ? proc_pid_wchan+0x250/0x250 [ 44.184860] ? proc_single_open+0x90/0x90 [ 44.188984] seq_read+0xc7d/0x2260 [ 44.192509] ? __vfs_read+0xc9/0x9b0 [ 44.196199] ? seq_open+0x360/0x360 [ 44.199806] __vfs_read+0x1a5/0x9b0 [ 44.203414] vfs_read+0x36c/0x6c0 [ 44.206850] SYSC_pread64+0x275/0x310 [ 44.210634] SyS_pread64+0x65/0x90 [ 44.214152] do_syscall_64+0x309/0x430 [ 44.218106] ? SYSC_write+0x360/0x360 [ 44.221897] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 44.227065] RIP: 0033:0x440089 [ 44.230231] RSP: 002b:00007ffddb7d4ee8 EFLAGS: 00000213 ORIG_RAX: 0000000000000011 [ 44.237926] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440089 [ 44.245349] RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003 [ 44.252602] RBP: 00000000006ca018 R08: 0000000000000010 R09: 65732f636f72702f [ 44.259861] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401910 [ 44.267109] R13: 00000000004019a0 R14: 0000000000000000 R15: 0000000000000000 [ 44.274932] Dumping ftrace buffer: [ 44.278465] (ftrace buffer empty) [ 44.282159] Kernel Offset: disabled [ 44.285762] Rebooting in 86400 seconds..