[....] Starting enhanced syslogd: rsyslogd[ 12.475987] audit: type=1400 audit(1515118676.117:5): avc: denied { syslog } for pid=3340 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. 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. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 18.775808] audit: type=1400 audit(1515118682.417:6): avc: denied { map } for pid=3481 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 '10.128.15.240' (ECDSA) to the list of known hosts. [ 24.973543] audit: type=1400 audit(1515118688.615:7): avc: denied { map } for pid=3495 comm="syzkaller884885" path="/root/syzkaller884885479" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 26.489219] WARNING: CPU: 1 PID: 4912 at sound/core/pcm_lib.c:1635 snd_pcm_hw_param_first+0x289/0x690 [ 26.498614] Kernel panic - not syncing: panic_on_warn set ... [ 26.498614] [ 26.505945] CPU: 1 PID: 4912 Comm: syzkaller884885 Not tainted 4.15.0-rc6+ #248 [ 26.513367] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.522694] Call Trace: [ 26.525253] dump_stack+0x194/0x257 [ 26.528850] ? arch_local_irq_restore+0x53/0x53 [ 26.533498] ? vsnprintf+0x1ed/0x1900 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 26.537272] panic+0x1e4/0x41c [ 26.540434] ? refcount_error_report+0x214/0x214 [ 26.545157] ? show_regs_print_info+0x18/0x18 [ 26.549626] ? __warn+0x1c1/0x200 [ 26.553049] ? snd_pcm_hw_param_first+0x289/0x690 [ 26.557859] __warn+0x1dc/0x200 [ 26.561108] ? snd_pcm_hw_param_first+0x289/0x690 [ 26.565925] report_bug+0x211/0x2d0 [ 26.569525] fixup_bug.part.11+0x37/0x80 [ 26.573557] do_error_trap+0x2d7/0x3e0 [ 26.577409] ? snd_pcm_oss_release+0x20b/0x280 [ 26.581959] ? __fput+0x327/0x7e0 [ 26.585383] ? ____fput+0x15/0x20 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 26.588808] ? math_error+0x400/0x400 [ 26.592578] ? exit_to_usermode_loop+0x214/0x310 [ 26.597302] ? syscall_return_slowpath+0x490/0x550 [ 26.602198] ? entry_SYSCALL_64_fastpath+0x98/0x9a [ 26.607098] ? check_noncircular+0x20/0x20 [ 26.611307] ? print_irqtrace_events+0x270/0x270 [ 26.616034] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.620850] do_invalid_op+0x1b/0x20 [ 26.624529] invalid_op+0x22/0x40 [ 26.627949] RIP: 0010:snd_pcm_hw_param_first+0x289/0x690 [ 26.633363] RSP: 0018:ffff8801bb81ee00 EFLAGS: 00010293 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 26.638693] RAX: ffff8801d8984500 RBX: ffff8801d8524900 RCX: ffffffff841bf1a9 [ 26.645931] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: ffffed0037703db8 [ 26.653181] RBP: ffff8801bb81ee50 R08: ffffed0037703cef R09: ffff8801bb81e770 [ 26.660417] R10: 0000000000000001 R11: ffffed0037703cee R12: 000000000000000d [ 26.667655] R13: 00000000ffffffea R14: 0000000000000005 R15: 0000000000002000 [ 26.674913] ? snd_pcm_hw_param_first+0x289/0x690 [ 26.679749] snd_pcm_hw_param_near.constprop.27+0x78d/0x9a0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 26.685459] ? _snd_pcm_hw_param_set.constprop.26+0x6f0/0x6f0 [ 26.691335] ? snd_pcm_plugin_free+0xb1/0xe0 [ 26.695722] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.700723] ? trace_hardirqs_on+0xd/0x10 [ 26.704845] ? snd_pcm_plug_slave_size+0x148/0x2c0 [ 26.709746] snd_pcm_oss_change_params+0x17d3/0x3720 [ 26.714832] ? snd_pcm_hw_param_near.constprop.27+0x9a0/0x9a0 [ 26.720694] ? __schedule+0x8f3/0x2060 [ 26.724546] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.729532] ? find_held_lock+0x35/0x1d0 [ 26.733567] ? mntput_no_expire+0x130/0xa90 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 26.737857] ? lock_downgrade+0x980/0x980 [ 26.741976] ? lock_release+0xa40/0xa40 [ 26.745935] snd_pcm_oss_make_ready+0xaa/0x130 [ 26.750489] snd_pcm_oss_sync+0x34b/0x830 [ 26.754610] ? snd_pcm_oss_sync1+0x550/0x550 [ 26.758991] ? fsnotify_first_mark+0x2b0/0x2b0 [ 26.763547] snd_pcm_oss_release+0x20b/0x280 [ 26.767926] ? snd_pcm_oss_sync+0x830/0x830 [ 26.772219] __fput+0x327/0x7e0 [ 26.775477] ? fput+0x140/0x140 [ 26.778729] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 26.784586] ? _raw_spin_unlock_irq+0x27/0x70 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 26.789055] ____fput+0x15/0x20 [ 26.792303] task_work_run+0x199/0x270 [ 26.796619] ? task_work_cancel+0x210/0x210 [ 26.800914] ? _raw_spin_unlock+0x22/0x30 [ 26.805031] ? switch_task_namespaces+0x87/0xc0 [ 26.809673] do_exit+0x9bb/0x1ad0 [ 26.813100] ? mm_update_next_owner+0x930/0x930 [ 26.817740] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 26.822920] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 26.828087] ? avc_has_perm_noaudit+0x355/0x520 [ 26.832724] ? check_noncircular+0x20/0x20 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 26.836923] ? check_noncircular+0x20/0x20 [ 26.841125] ? find_held_lock+0x35/0x1d0 [ 26.845153] ? print_irqtrace_events+0x270/0x270 [ 26.849874] ? check_noncircular+0x20/0x20 [ 26.854080] ? check_noncircular+0x20/0x20 [ 26.858282] ? lock_downgrade+0x980/0x980 [ 26.862399] ? check_noncircular+0x20/0x20 [ 26.866611] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 26.871767] ? __lock_acquire+0x664/0x3e00 [ 26.875971] ? mntput_no_expire+0x130/0xa90 [ 26.880261] ? check_noncircular+0x20/0x20 [ 26.884467] ? find_held_lock+0x35/0x1d0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 26.888504] ? get_signal+0x7ae/0x16c0 [ 26.892357] ? lock_downgrade+0x980/0x980 [ 26.896480] do_group_exit+0x149/0x400 [ 26.900342] ? do_raw_spin_trylock+0x190/0x190 [ 26.904891] ? SyS_exit+0x30/0x30 [ 26.908310] ? _raw_spin_unlock_irq+0x27/0x70 [ 26.912775] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.917762] get_signal+0x73f/0x16c0 [ 26.921454] ? ptrace_notify+0x130/0x130 [ 26.925491] ? is_bpf_text_address+0xa4/0x120 [ 26.929955] ? kernel_text_address+0x102/0x140 [ 26.934506] ? __kernel_text_address+0xd/0x40 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 26.938970] ? unwind_get_return_address+0x61/0xa0 [ 26.943869] ? __save_stack_trace+0x7e/0xd0 [ 26.948164] ? depot_save_stack+0x12c/0x490 [ 26.952464] do_signal+0x90/0x1eb0 [ 26.955988] ? save_stack+0x43/0xd0 [ 26.959582] ? kasan_slab_free+0x71/0xc0 [ 26.963617] ? kmem_cache_free+0x83/0x2a0 [ 26.967733] ? putname+0xee/0x130 [ 26.971153] ? do_sys_open+0x31b/0x6d0 [ 26.975006] ? SyS_open+0x2d/0x40 [ 26.978435] ? entry_SYSCALL_64_fastpath+0x23/0x9a [ 26.983337] ? setup_sigcontext+0x7d0/0x7d0 [ 26.987625] ? __lock_is_held+0xb6/0x140 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 26.991666] ? free_obj_work+0x690/0x690 [ 26.995694] ? __fd_install+0x288/0x740 [ 26.999640] ? get_unused_fd_flags+0x190/0x190 [ 27.004205] ? may_open_dev+0xe0/0xe0 [ 27.008009] ? exit_to_usermode_loop+0x8c/0x310 [ 27.012684] exit_to_usermode_loop+0x214/0x310 [ 27.017262] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 27.022787] ? kmem_cache_free+0x267/0x2a0 [ 27.027020] ? putname+0xf3/0x130 [ 27.030475] syscall_return_slowpath+0x490/0x550 [ 27.035223] ? prepare_exit_to_usermode+0x340/0x340 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.040230] ? entry_SYSCALL_64_fastpath+0x6d/0x9a [ 27.045151] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 27.050160] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 27.054919] entry_SYSCALL_64_fastpath+0x98/0x9a [ 27.059658] RIP: 0033:0x405601 [ 27.062832] RSP: 002b:00007f4c10ba6970 EFLAGS: 00000293 ORIG_RAX: 0000000000000002 [ 27.070525] RAX: 0000000000000004 RBX: 0000000000000000 RCX: 0000000000405601 [ 27.077786] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00007f4c10ba6980 executing program executing program [ 27.085044] RBP: cccccccccccccccd R08: 0000000000000000 R09: 0000000000000000 [ 27.092305] R10: 000000000000000b R11: 0000000000000293 R12: 0000000000000002 [ 27.099559] R13: 00800000c004500a R14: 7073642f7665642f R15: 0000000000000004 [ 27.107382] Dumping ftrace buffer: [ 27.110978] (ftrace buffer empty) [ 27.114659] Kernel Offset: disabled [ 27.118255] Rebooting in 86400 seconds..