[info] Using makefile-style concurrent boot in runlevel 2. [ 26.237837] audit: type=1800 audit(1544109389.388:21): pid=5864 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [....] 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 '10.128.10.1' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 37.432370] ------------[ cut here ]------------ [ 37.437366] memory commitment underflow [ 37.437467] WARNING: CPU: 0 PID: 5999 at mm/util.c:645 __vm_enough_memory+0x734/0x960 [ 37.449366] Kernel panic - not syncing: panic_on_warn set ... [ 37.455234] CPU: 0 PID: 5999 Comm: udevd Not tainted 4.20.0-rc5+ #364 [ 37.461830] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.471165] Call Trace: [ 37.473743] dump_stack+0x244/0x39d [ 37.477355] ? dump_stack_print_info.cold.1+0x20/0x20 [ 37.482542] panic+0x2ad/0x55c [ 37.485719] ? add_taint.cold.5+0x16/0x16 [ 37.489857] ? __warn.cold.8+0x5/0x45 [ 37.493659] ? __warn+0xe8/0x1d0 [ 37.497014] ? __vm_enough_memory+0x734/0x960 [ 37.501498] __warn.cold.8+0x20/0x45 [ 37.505201] ? rcu_softirq_qs+0x20/0x20 [ 37.509160] ? __vm_enough_memory+0x734/0x960 [ 37.513644] report_bug+0x254/0x2d0 [ 37.517257] do_error_trap+0x11b/0x200 [ 37.521134] do_invalid_op+0x36/0x40 [ 37.524848] ? __vm_enough_memory+0x734/0x960 [ 37.529328] invalid_op+0x14/0x20 [ 37.532797] RIP: 0010:__vm_enough_memory+0x734/0x960 [ 37.537900] Code: 60 d3 ff 0f b6 85 28 fe ff ff 84 c0 0f 85 4e fa ff ff e8 ff 5f d3 ff 48 c7 c7 60 99 32 88 c6 05 0c 8a 66 08 01 e8 fc bf 9c ff <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 0f b6 14 [ 37.556784] RSP: 0018:ffff8881c3696ca0 EFLAGS: 00010282 [ 37.562134] RAX: 0000000000000000 RBX: 1ffff110386d2d98 RCX: 0000000000000000 [ 37.569389] RDX: 0000000000000000 RSI: ffffffff8165fbe5 RDI: 0000000000000006 [ 37.576659] RBP: ffff8881c3696e88 R08: ffff8881c37400c0 R09: 0000000000000006 [ 37.583911] R10: 0000000000000000 R11: ffff8881c37400c0 R12: ffff8881c3696e60 [ 37.591162] R13: 0000000000000c60 R14: ffffffff8961c660 R15: 0000000000000001 [ 37.598425] ? vprintk_func+0x85/0x181 [ 37.602305] ? vm_commit_limit+0xd0/0xd0 [ 37.606407] ? copy_process+0x4413/0x87a0 [ 37.610559] ? lock_downgrade+0x900/0x900 [ 37.614694] ? lock_release+0xa00/0xa00 [ 37.618652] ? perf_trace_sched_process_exec+0x860/0x860 [ 37.624085] ? dup_userfaultfd+0x6d8/0x890 [ 37.628311] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 37.633837] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 37.639393] ? cap_capable+0x1f9/0x260 [ 37.643300] security_vm_enough_memory_mm+0x9d/0xc0 [ 37.648305] copy_process+0x4146/0x87a0 [ 37.652296] ? __cleanup_sighand+0x70/0x70 [ 37.656521] ? __lock_acquire+0x62f/0x4c20 [ 37.660775] ? print_usage_bug+0xc0/0xc0 [ 37.664825] ? mark_held_locks+0x130/0x130 [ 37.669380] ? mark_held_locks+0x130/0x130 [ 37.673603] ? lock_unpin_lock+0x4a0/0x4a0 [ 37.677823] ? print_usage_bug+0xc0/0xc0 [ 37.681876] ? __lock_acquire+0x62f/0x4c20 [ 37.686095] ? zap_class+0x640/0x640 [ 37.689795] ? print_usage_bug+0xc0/0xc0 [ 37.693841] ? __lock_acquire+0x62f/0x4c20 [ 37.698058] ? zap_class+0x640/0x640 [ 37.701769] ? print_usage_bug+0xc0/0xc0 [ 37.705843] ? mark_held_locks+0x130/0x130 [ 37.710075] ? zap_class+0x640/0x640 [ 37.713788] ? trace_hardirqs_on+0xbd/0x310 [ 37.718097] ? print_usage_bug+0xc0/0xc0 [ 37.722146] ? trace_hardirqs_off_caller+0x310/0x310 [ 37.727262] ? do_raw_spin_trylock+0x270/0x270 [ 37.731832] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 37.736747] ? kasan_check_read+0x11/0x20 [ 37.740900] ? print_usage_bug+0xc0/0xc0 [ 37.744945] ? find_held_lock+0x36/0x1c0 [ 37.748987] ? zap_class+0x640/0x640 [ 37.752703] ? print_usage_bug+0xc0/0xc0 [ 37.756745] ? mark_held_locks+0xc7/0x130 [ 37.760879] ? print_usage_bug+0xc0/0xc0 [ 37.764926] ? __lock_acquire+0x62f/0x4c20 [ 37.769144] ? zap_class+0x640/0x640 [ 37.772869] ? __lock_acquire+0x62f/0x4c20 [ 37.777097] ? find_held_lock+0x36/0x1c0 [ 37.781154] ? is_bpf_text_address+0xac/0x170 [ 37.785656] ? check_preemption_disabled+0x48/0x280 [ 37.790659] ? kasan_check_read+0x11/0x20 [ 37.794804] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 37.800161] ? rcu_softirq_qs+0x20/0x20 [ 37.804117] ? rcu_softirq_qs+0x20/0x20 [ 37.808078] ? unwind_dump+0x190/0x190 [ 37.811959] ? kernel_text_address+0x79/0xf0 [ 37.816350] ? __kernel_text_address+0xd/0x40 [ 37.820846] ? unwind_get_return_address+0x61/0xa0 [ 37.825760] ? __save_stack_trace+0x8d/0xf0 [ 37.830072] ? save_stack+0xa9/0xd0 [ 37.833703] ? save_stack+0x43/0xd0 [ 37.837312] ? __kasan_slab_free+0x102/0x150 [ 37.841718] ? kasan_slab_free+0xe/0x10 [ 37.845675] ? kmem_cache_free+0x83/0x290 [ 37.849810] ? putname+0xf2/0x130 [ 37.853248] ? do_unlinkat+0x236/0xa30 [ 37.857118] ? __x64_sys_unlink+0x42/0x50 [ 37.861272] ? do_syscall_64+0x1b9/0x820 [ 37.865343] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.870703] ? trace_hardirqs_off+0xb8/0x310 [ 37.875204] ? kasan_check_read+0x11/0x20 [ 37.879353] ? do_raw_spin_unlock+0xa7/0x330 [ 37.883858] ? trace_hardirqs_on+0x310/0x310 [ 37.888265] ? rcu_softirq_qs+0x20/0x20 [ 37.892225] ? dput.part.25+0x241/0x860 [ 37.896183] ? trace_hardirqs_off+0xb8/0x310 [ 37.900609] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 37.906139] ? check_preemption_disabled+0x48/0x280 [ 37.911163] ? rcu_pm_notify+0xc0/0xc0 [ 37.915042] _do_fork+0x1cb/0x11d0 [ 37.918687] ? fork_idle+0x1d0/0x1d0 [ 37.922395] ? putname+0xf7/0x130 [ 37.925832] ? do_unlinkat+0x23b/0xa30 [ 37.929813] ? __ia32_sys_rmdir+0x40/0x40 [ 37.933948] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 37.939577] ? strncpy_from_user+0x411/0x5a0 [ 37.943980] ? do_syscall_64+0x9a/0x820 [ 37.948072] ? do_syscall_64+0x9a/0x820 [ 37.952116] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 37.956754] ? trace_hardirqs_on+0xbd/0x310 [ 37.961068] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.966420] ? trace_hardirqs_off_caller+0x310/0x310 [ 37.971531] __x64_sys_clone+0xbf/0x150 [ 37.975493] do_syscall_64+0x1b9/0x820 [ 37.979369] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 37.984726] ? syscall_return_slowpath+0x5e0/0x5e0 [ 37.989899] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 37.994731] ? trace_hardirqs_on_caller+0x310/0x310 [ 37.999730] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 38.004729] ? prepare_exit_to_usermode+0x291/0x3b0 [ 38.009738] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 38.014698] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 38.019875] RIP: 0033:0x7f5f57620f46 [ 38.023630] Code: f7 d8 64 89 04 25 d4 02 00 00 64 4c 8b 14 25 10 00 00 00 31 d2 49 81 c2 d0 02 00 00 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 31 01 00 00 85 c0 41 89 c4 0f 85 3b 01 00 [ 38.042656] RSP: 002b:00007ffe116063d0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 [ 38.050365] RAX: ffffffffffffffda RBX: 00007ffe116063d0 RCX: 00007f5f57620f46 [ 38.057615] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 [ 38.064906] RBP: 00007ffe11606430 R08: 000000000000176f R09: 000000000000176f [ 38.072170] R10: 00007f5f57f3da70 R11: 0000000000000246 R12: 0000000000000000 [ 38.079438] R13: 00007ffe116063f0 R14: 0000000000000003 R15: 0000000000000003 [ 38.087873] Kernel Offset: disabled [ 38.091574] Rebooting in 86400 seconds..