[info] Using makefile-style concurrent boot in runlevel 2. [ 24.281379] audit: type=1800 audit(1543868704.310:21): pid=5762 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 24.309763] audit: type=1800 audit(1543868704.310:22): pid=5762 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2447 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 '10.128.0.125' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 35.812822] [ 35.814498] ==================================== [ 35.819275] WARNING: syz-executor889/5918 still has locks held! [ 35.825329] 4.20.0-rc5+ #361 Not tainted [ 35.829504] ------------------------------------ [ 35.834249] 1 lock held by syz-executor889/5918: [ 35.839001] #0: 00000000d164fb2d (&sig->cred_guard_mutex){+.+.}, at: prepare_bprm_creds+0x53/0x120 [ 35.848217] [ 35.848217] stack backtrace: [ 35.852715] CPU: 1 PID: 5918 Comm: syz-executor889 Not tainted 4.20.0-rc5+ #361 [ 35.860139] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.869472] Call Trace: [ 35.872043] dump_stack+0x244/0x39d [ 35.875651] ? dump_stack_print_info.cold.1+0x20/0x20 [ 35.880834] ? vprintk_func+0x85/0x181 [ 35.884707] debug_check_no_locks_held.cold.49+0x93/0x9f [ 35.890140] flush_old_exec+0x1ea2/0x2480 [ 35.894268] ? save_stack+0x43/0xd0 [ 35.897874] ? __kmalloc+0x15b/0x760 [ 35.901570] ? copy_strings_kernel+0x110/0x110 [ 35.906132] ? iov_iter_init+0xe5/0x210 [ 35.910089] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 35.915604] ? __vfs_read+0x11f/0x9b0 [ 35.919387] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.924908] ? fsnotify+0x50e/0xef0 [ 35.928515] ? fsnotify+0xef0/0xef0 [ 35.932152] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.937670] ? fsnotify_first_mark+0x350/0x350 [ 35.942231] ? __fsnotify_parent+0xcc/0x430 [ 35.946543] ? fsnotify+0xef0/0xef0 [ 35.950153] ? rw_verify_area+0x118/0x360 [ 35.954284] ? vfs_read+0x1ce/0x3c0 [ 35.957894] ? kernel_read+0xab/0x120 [ 35.961780] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 35.966793] ? load_elf_phdrs+0x1e4/0x270 [ 35.970919] ? writenote+0x3d0/0x3d0 [ 35.974615] ? __kasan_slab_free+0x119/0x150 [ 35.979004] load_elf_binary+0xa9a/0x5cf0 [ 35.983144] ? find_held_lock+0x36/0x1c0 [ 35.987191] ? notesize.isra.6+0x80/0x80 [ 35.991230] ? ima_file_mmap+0x160/0x160 [ 35.995271] ? lock_downgrade+0x900/0x900 [ 35.999403] ? kasan_check_write+0x14/0x20 [ 36.003625] search_binary_handler+0x17d/0x570 [ 36.008193] __do_execve_file.isra.33+0x1661/0x25d0 [ 36.013191] ? prepare_bprm_creds+0x120/0x120 [ 36.017668] ? usercopy_warn+0x110/0x110 [ 36.021711] ? check_preemption_disabled+0x48/0x280 [ 36.026712] ? rcu_lockdep_current_cpu_online+0x1a4/0x210 [ 36.032270] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 36.037788] ? strncpy_from_user+0x411/0x5a0 [ 36.042181] ? digsig_verify+0x1530/0x1530 [ 36.046410] ? kmem_cache_alloc+0x33a/0x730 [ 36.050712] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 36.055276] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 36.060794] __x64_sys_execveat+0xed/0x130 [ 36.065011] do_syscall_64+0x1b9/0x820 [ 36.068882] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 36.074224] ? syscall_return_slowpath+0x5e0/0x5e0 [ 36.079137] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.083962] ? trace_hardirqs_on_caller+0x310/0x310 [ 36.088958] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 36.093964] ? prepare_exit_to_usermode+0x291/0x3b0 [ 36.098961] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.103785] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.108954] RIP: 0033:0x445789 [ 36.112128] Code: e8 6c b6 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 36.131007] RSP: 002b:00007f78498d6db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000142 [ 36.138694] RAX: ffffffffffffffda RBX: 00000000006dac28 RCX: 0000000000445789 [ 36.145943] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003 [ 36.153193] RBP: 00000000006dac20 R08: 0000000000001000 R09: 0000000000000000 [ 36.160458] R10: 0000000000000000 R11: 0000