Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 33.891843] audit: type=1800 audit(1543059835.323:33): pid=6028 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 33.921834] audit: type=1800 audit(1543059835.323:34): pid=6028 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 [ 35.171598] audit: type=1400 audit(1543059836.603:35): avc: denied { map } for pid=6203 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.75' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 41.842970] audit: type=1400 audit(1543059843.273:36): avc: denied { map } for pid=6217 comm="syz-executor552" path="/root/syz-executor552394561" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 41.871296] [ 41.872944] ==================================== [ 41.878242] WARNING: syz-executor552/6218 still has locks held! [ 41.884281] 4.20.0-rc3+ #127 Not tainted [ 41.888371] ------------------------------------ [ 41.893119] 1 lock held by syz-executor552/6218: [ 41.897922] #0: 000000004754a9eb (&sig->cred_guard_mutex){+.+.}, at: prepare_bprm_creds+0x53/0x120 [ 41.907144] [ 41.907144] stack backtrace: [ 41.911631] CPU: 0 PID: 6218 Comm: syz-executor552 Not tainted 4.20.0-rc3+ #127 [ 41.919054] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.928384] Call Trace: [ 41.930955] dump_stack+0x244/0x39d [ 41.934564] ? dump_stack_print_info.cold.1+0x20/0x20 [ 41.939736] ? vprintk_func+0x85/0x181 [ 41.943610] debug_check_no_locks_held.cold.49+0x93/0x9f [ 41.949041] flush_old_exec+0x1ea2/0x2480 [ 41.953191] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 41.958102] ? copy_strings_kernel+0x110/0x110 [ 41.962661] ? dput.part.25+0x26d/0x860 [ 41.966614] ? __vfs_read+0x11f/0x9b0 [ 41.970389] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 41.975899] ? fsnotify+0x50e/0xef0 [ 41.979557] ? fsnotify_first_mark+0x350/0x350 [ 41.984135] ? __fsnotify_parent+0xcc/0x430 [ 41.988461] ? fsnotify+0xef0/0xef0 [ 41.992063] ? rw_verify_area+0x118/0x360 [ 41.996192] ? vfs_read+0x1ce/0x3c0 [ 41.999801] ? kernel_read+0xab/0x120 [ 42.003607] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 42.008604] ? load_elf_phdrs+0x1cd/0x260 [ 42.012726] ? writenote+0x3d0/0x3d0 [ 42.016438] load_elf_binary+0xa39/0x5620 [ 42.020566] ? find_held_lock+0x36/0x1c0 [ 42.024610] ? notesize.isra.6+0x80/0x80 [ 42.028648] ? ima_file_mmap+0x160/0x160 [ 42.032726] ? lock_downgrade+0x900/0x900 [ 42.036873] ? kasan_check_write+0x14/0x20 [ 42.041091] search_binary_handler+0x17d/0x570 [ 42.045654] __do_execve_file.isra.33+0x1661/0x25d0 [ 42.050652] ? prepare_bprm_creds+0x120/0x120 [ 42.055179] ? usercopy_warn+0x110/0x110 [ 42.059222] ? check_preemption_disabled+0x48/0x280 [ 42.064219] ? rcu_lockdep_current_cpu_online+0x1a4/0x210 [ 42.069735] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 42.075254] ? strncpy_from_user+0x411/0x5a0 [ 42.079645] ? digsig_verify+0x1530/0x1530 [ 42.083857] ? kmem_cache_alloc+0x33a/0x730 [ 42.088160] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 42.092724] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 42.098236] __x64_sys_execveat+0xed/0x130 [ 42.102450] do_syscall_64+0x1b9/0x820 [ 42.106316] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 42.111660] ? syscall_return_slowpath+0x5e0/0x5e0 [ 42.116569] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.121393] ? trace_hardirqs_on_caller+0x310/0x310 [ 42.126389] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 42.131401] ? prepare_exit_to_usermode+0x291/0x3b0 [ 42.136416] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.141240] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.146405] RIP: 0033:0x445639 [ 42.149579] Code: e8 ec b8 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 8b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 42.168457] RSP: 002b:00007f5efaee7d18 EFLAGS: 00000246 ORIG_RAX: 0000000000000142 [ 42.176160] RAX: ffffffffffffffda RBX: 00000000006dac28 RCX: 0000000000445639 [ 42.183416] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 42.190664] RBP: 00000000006dac20 R08: 0000000000001000 R09: 65732f636f72702f [ 42.197920] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5efaee7d20 [ 42.205174] R13: 00000000006dac2c R14: 0000000020000280 R15: 00000000006dad2c executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program