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 syzkaller login: INIT: Id "6" respawning too fast: disabled for 5 minutes INIT: Id "5" respawning too fast: disabled for 5 minutes INIT: Id "1" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "4" respawning too fast: disabled for 5 minutes Warning: Permanently added '10.128.0.7' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program [ 119.019699] ================================================================== [ 119.027078] BUG: KASAN: out-of-bounds in __unwind_start+0x37c/0x3c0 [ 119.033457] Read of size 8 at addr ffff8801d90d7820 by task syzkaller544472/3734 [ 119.040963] [ 119.042571] CPU: 1 PID: 3734 Comm: syzkaller544472 Not tainted 4.9.95-gee0bcd6 #3 [ 119.050160] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 119.059498] ffff8801d8cd7770 ffffffff81eb0f89 ffffea00076435c0 ffff8801d90d7820 executing program executing program [ 119.067494] 0000000000000000 ffff8801d90d7828 ffff8801d8cd78a8 ffff8801d8cd77a8 [ 119.075469] ffffffff815653cb ffff8801d90d7820 0000000000000008 0000000000000000 [ 119.083453] Call Trace: [ 119.086017] [] dump_stack+0xc1/0x128 [ 119.091366] [] print_address_description+0x6c/0x234 [ 119.098015] [] kasan_report.cold.6+0x242/0x2fe [ 119.104220] [] ? __unwind_start+0x37c/0x3c0 [ 119.110162] [] __asan_report_load8_noabort+0x14/0x20 executing program [ 119.116894] [] __unwind_start+0x37c/0x3c0 [ 119.122672] [] ? ptrace_may_access+0x24/0x50 [ 119.128707] [] __save_stack_trace+0x59/0xf0 [ 119.134650] [] save_stack_trace_tsk+0x48/0x70 [ 119.140769] [] proc_pid_stack+0x148/0x220 [ 119.146559] [] ? lock_trace+0xc0/0xc0 [ 119.151984] [] proc_single_show+0xfd/0x170 [ 119.157846] [] seq_read+0x4b6/0x12e0 [ 119.163188] [] ? seq_dentry+0x290/0x290 executing program executing program [ 119.168787] [] ? __fsnotify_update_child_dentry_flags.part.1+0x300/0x300 [ 119.177250] [] ? fsnotify+0x1100/0x1100 [ 119.182852] [] do_loop_readv_writev.part.18+0xd5/0x280 [ 119.189753] [] do_readv_writev+0x565/0x7a0 [ 119.195613] [] ? vfs_write+0x530/0x530 [ 119.201123] [] ? mark_held_locks+0xc7/0x130 [ 119.207078] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 119.213894] [] ? mutex_lock_nested+0x596/0x870 executing program executing program [ 119.220099] [] ? __fdget_pos+0xac/0xd0 [ 119.225612] [] ? __fget+0x20a/0x3b0 [ 119.230864] [] ? mutex_trylock+0x3e0/0x3e0 [ 119.236724] [] ? __fget+0x231/0x3b0 [ 119.241979] [] ? __fget+0x47/0x3b0 [ 119.247147] [] vfs_readv+0x84/0xc0 [ 119.252311] [] do_readv+0xe6/0x260 [ 119.257474] [] ? vfs_readv+0xc0/0xc0 [ 119.262812] [] SyS_readv+0x27/0x30 executing program [ 119.267981] [] ? rw_copy_check_uvector+0x330/0x330 [ 119.274549] [] do_syscall_64+0x1a6/0x490 [ 119.280236] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 119.287139] [ 119.288737] The buggy address belongs to the page: [ 119.293644] page:ffffea00076435c0 count:0 mapcount:0 mapping: (null) index:0x0 [ 119.301973] flags: 0x8000000000000000() [ 119.305928] page dumped because: kasan: bad access detected [ 119.311609] [ 119.313207] Memory state around the buggy address: executing program executing program [ 119.318107] ffff8801d90d7700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 119.325439] ffff8801d90d7780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 119.332774] >ffff8801d90d7800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 119.340107] ^ [ 119.344756] ffff8801d90d7880: 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 [ 119.352087] ffff8801d90d7900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 119.359416] ================================================================== executing program executing program [ 119.366748] Disabling lock debugging due to kernel taint [ 119.372607] Kernel panic - not syncing: panic_on_warn set ... [ 119.372607] [ 119.379952] CPU: 1 PID: 3734 Comm: syzkaller544472 Tainted: G B 4.9.95-gee0bcd6 #3 [ 119.388756] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 119.398084] ffff8801d8cd76d0 ffffffff81eb0f89 ffffffff841c45f5 00000000ffffffff [ 119.406075] 0000000000000000 0000000000000001 ffff8801d8cd78a8 ffff8801d8cd7790 executing program [ 119.414070] ffffffff8141f945 0000000041b58ab3 ffffffff841b7cf8 ffffffff8141f786 [ 119.422069] Call Trace: [ 119.424632] [] dump_stack+0xc1/0x128 [ 119.429976] [] panic+0x1bf/0x3bc [ 119.434973] [] ? add_taint.cold.6+0x16/0x16 [ 119.440928] [] ? ___preempt_schedule+0x16/0x18 [ 119.447136] [] kasan_end_report+0x47/0x4f [ 119.452919] [] kasan_report.cold.6+0x76/0x2fe [ 119.459037] [] ? __unwind_start+0x37c/0x3c0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 119.464996] [] __asan_report_load8_noabort+0x14/0x20 [ 119.472765] [] __unwind_start+0x37c/0x3c0 [ 119.478541] [] ? ptrace_may_access+0x24/0x50 [ 119.484580] [] __save_stack_trace+0x59/0xf0 [ 119.490526] [] save_stack_trace_tsk+0x48/0x70 [ 119.496644] [] proc_pid_stack+0x148/0x220 [ 119.502459] [] ? lock_trace+0xc0/0xc0 [ 119.507882] [] proc_single_show+0xfd/0x170 [ 119.513752] [] seq_read+0x4b6/0x12e0 [ 119.519091] [] ? seq_dentry+0x290/0x290 [ 119.524695] [] ? __fsnotify_update_child_dentry_flags.part.1+0x300/0x300 [ 119.533162] [] ? fsnotify+0x1100/0x1100 [ 119.538764] [] do_loop_readv_writev.part.18+0xd5/0x280 [ 119.545671] [] do_readv_writev+0x565/0x7a0 [ 119.551531] [] ? vfs_write+0x530/0x530 [ 119.557042] [] ? mark_held_locks+0xc7/0x130 [ 119.562987] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 119.569803] [] ? mutex_lock_nested+0x596/0x870 [ 119.576010] [] ? __fdget_pos+0xac/0xd0 [ 119.581520] [] ? __fget+0x20a/0x3b0 [ 119.586771] [] ? mutex_trylock+0x3e0/0x3e0 [ 119.592630] [] ? __fget+0x231/0x3b0 [ 119.597882] [] ? __fget+0x47/0x3b0 [ 119.603045] [] vfs_readv+0x84/0xc0 [ 119.608207] [] do_readv+0xe6/0x260 [ 119.613369] [] ? vfs_readv+0xc0/0xc0 [ 119.618708] [] SyS_readv+0x27/0x30 [ 119.623872] [] ? rw_copy_check_uvector+0x330/0x330 [ 119.630423] [] do_syscall_64+0x1a6/0x490 [ 119.636111] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 119.643433] Dumping ftrace buffer: [ 119.646963] (ftrace buffer empty) [ 119.650652] Kernel Offset: disabled [ 119.654256] Rebooting in 86400 seconds..