[info] Using makefile-style concurrent boot in runlevel 2. [ 25.646056] audit: type=1800 audit(1543340615.273:21): pid=5831 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 25.665781] audit: type=1800 audit(1543340615.273:22): pid=5831 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 syzkaller login: [ 33.378368] sshd (5971) used greatest stack depth: 15744 bytes left Warning: Permanently added '10.128.0.69' (ECDSA) to the list of known hosts. executing program [ 39.956592] [ 39.958266] ==================================== [ 39.962993] WARNING: syz-executor232/5988 still has locks held! [ 39.969117] 4.20.0-rc4+ #255 Not tainted [ 39.973172] ------------------------------------ [ 39.978200] 1 lock held by syz-executor232/5988: [ 39.982932] #0: 000000002240c750 (&sig->cred_guard_mutex){+.+.}, at: prepare_bprm_creds+0x53/0x120 [ 39.992218] [ 39.992218] stack backtrace: [ 39.996758] CPU: 1 PID: 5988 Comm: syz-executor232 Not tainted 4.20.0-rc4+ #255 [ 40.004229] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.013556] Call Trace: [ 40.016121] dump_stack+0x244/0x39d [ 40.019727] ? dump_stack_print_info.cold.1+0x20/0x20 [ 40.024917] ? vprintk_func+0x85/0x181 [ 40.028782] debug_check_no_locks_held.cold.49+0x93/0x9f [ 40.034273] flush_old_exec+0x1ea2/0x2480 [ 40.038456] ? save_stack+0x43/0xd0 [ 40.042060] ? __kmalloc+0x15b/0x760 [ 40.045748] ? copy_strings_kernel+0x110/0x110 [ 40.050306] ? iov_iter_init+0xe5/0x210 [ 40.054260] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 40.059776] ? __vfs_read+0x11f/0x9b0 [ 40.063550] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 40.069062] ? fsnotify+0x50e/0xef0 [ 40.072697] ? fsnotify+0xef0/0xef0 [ 40.076302] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 40.081828] ? fsnotify_first_mark+0x350/0x350 [ 40.086384] ? __fsnotify_parent+0xcc/0x430 [ 40.090703] ? fsnotify+0xef0/0xef0 [ 40.094311] ? rw_verify_area+0x118/0x360 [ 40.098439] ? vfs_read+0x1ce/0x3c0 [ 40.102042] ? kernel_read+0xab/0x120 [ 40.105835] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 40.110829] ? load_elf_phdrs+0x1e4/0x270 [ 40.114953] ? writenote+0x3d0/0x3d0 [ 40.118659] ? __kasan_slab_free+0x119/0x150 [ 40.123044] load_elf_binary+0xa9a/0x5cf0 [ 40.127232] ? find_held_lock+0x36/0x1c0 [ 40.131273] ? notesize.isra.6+0x80/0x80 [ 40.135310] ? ima_file_mmap+0x160/0x160 [ 40.139362] ? lock_downgrade+0x900/0x900 [ 40.143486] ? kasan_check_write+0x14/0x20 [ 40.147695] search_binary_handler+0x17d/0x570 [ 40.152263] __do_execve_file.isra.33+0x1661/0x25d0 [ 40.157273] ? prepare_bprm_creds+0x120/0x120 [ 40.161770] ? usercopy_warn+0x110/0x110 [ 40.165814] ? check_preemption_disabled+0x48/0x280 [ 40.170808] ? rcu_lockdep_current_cpu_online+0x1a4/0x210 [ 40.176348] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 40.181878] ? strncpy_from_user+0x411/0x5a0 [ 40.186279] ? digsig_verify+0x1530/0x1530 [ 40.190485] ? kmem_cache_alloc+0x33a/0x730 [ 40.194817] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 40.199391] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 40.204907] __ia32_compat_sys_execveat+0xf3/0x140 [ 40.209831] do_fast_syscall_32+0x34d/0xfb2 [ 40.214129] ? do_int80_syscall_32+0x890/0x890 [ 40.218691] ? entry_SYSENTER_compat+0x68/0x7f [ 40.223248] ? trace_hardirqs_off_caller+0xbb/0x310 [ 40.228239] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.233055] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.237879] ? trace_hardirqs_on_caller+0x310/0x310 [ 40.242885] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 40.247929] ? prepare_exit_to_usermode+0x291/0x3b0 [ 40.252938] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.257759] entry_SYSENTER_compat+0x70/0x7f [ 40.262184] RIP: 0023:0xf7fe8a29 [ 40.265525] Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 40.284413] RSP: 002b:00000000f7fe41cc EFLAGS: 00000292 ORIG_RAX: 0000000000000166 [ 40.292107] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000040 [ 40.299368] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000001000 [ 40.306628] RBP