[....] Starting enhanced syslogd: rsyslogd[ 12.714758] audit: type=1400 audit(1515165258.742:5): avc: denied { syslog } for pid=3345 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: [ 18.567716] audit: type=1400 audit(1515165264.595:6): avc: denied { map } for pid=3485 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 '10.128.0.46' (ECDSA) to the list of known hosts. [ 24.784446] audit: type=1400 audit(1515165270.812:7): avc: denied { map } for pid=3499 comm="syzkaller124367" path="/root/syzkaller124367737" 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 net.ipv6.conf.syz7.accept_dad = 0 net.ipv6.conf.syz7.router_solicitations = 0 executing program executing program executing program executing program executing program executing program executing program executing program net.ipv6.conf.syz5.accept_dad = 0 executing program executing program net.ipv6.conf.syz5.router_solicitations = 0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program net.ipv6.conf.syz3.accept_dad = 0 executing program executing program executing program executing program net.ipv6.conf.syz3.router_solicitations = 0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program net.ipv6.conf.syz1.accept_dad = 0 executing program executing program executing program executing program net.ipv6.conf.syz1.router_solicitations = 0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program net.ipv6.conf.syz2.accept_dad = 0 executing program executing program executing program executing program executing program executing program net.ipv6.conf.syz2.router_solicitations = 0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program net.ipv6.conf.syz0.accept_dad = 0 executing program executing program executing program executing program net.ipv6.conf.syz0.router_solicitations = 0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program net.ipv6.conf.syz4.accept_dad = 0 executing program executing program executing program executing program executing program executing program executing program executing program net.ipv6.conf.syz4.router_solicitations = 0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program net.ipv6.conf.syz6.accept_dad = 0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program net.ipv6.conf.syz6.router_solicitations = 0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 26.046776] WARNING: CPU: 1 PID: 4870 at sound/core/pcm_lib.c:1635 snd_pcm_hw_param_first+0x289/0x690 [ 26.056157] Kernel panic - not syncing: panic_on_warn set ... [ 26.056157] [ 26.063490] CPU: 1 PID: 4870 Comm: syzkaller124367 Not tainted 4.15.0-rc6+ #248 [ 26.070901] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.080230] Call Trace: [ 26.082797] dump_stack+0x194/0x257 [ 26.086404] ? arch_local_irq_restore+0x53/0x53 [ 26.091058] ? vsnprintf+0x1ed/0x1900 [ 26.094831] panic+0x1e4/0x41c [ 26.097991] ? refcount_error_report+0x214/0x214 [ 26.102712] ? show_regs_print_info+0x18/0x18 [ 26.107191] ? __warn+0x1c1/0x200 [ 26.110619] ? snd_pcm_hw_param_first+0x289/0x690 [ 26.115431] __warn+0x1dc/0x200 [ 26.118679] ? snd_pcm_hw_param_first+0x289/0x690 [ 26.123511] report_bug+0x211/0x2d0 [ 26.127116] fixup_bug.part.11+0x37/0x80 [ 26.131149] do_error_trap+0x2d7/0x3e0 [ 26.135005] ? snd_pcm_oss_release+0x20b/0x280 [ 26.139562] ? __fput+0x327/0x7e0 [ 26.142991] ? ____fput+0x15/0x20 [ 26.146427] ? math_error+0x400/0x400 [ 26.150206] ? exit_to_usermode_loop+0x214/0x310 [ 26.154935] ? syscall_return_slowpath+0x490/0x550 [ 26.159832] ? entry_SYSCALL_64_fastpath+0x98/0x9a [ 26.164730] ? check_noncircular+0x20/0x20 [ 26.168934] ? print_irqtrace_events+0x270/0x270 [ 26.173661] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.178477] do_invalid_op+0x1b/0x20 [ 26.182170] invalid_op+0x22/0x40 [ 26.185592] RIP: 0010:snd_pcm_hw_param_first+0x289/0x690 [ 26.191013] RSP: 0018:ffff8801d9feee00 EFLAGS: 00010293 [ 26.196343] RAX: ffff8801d8c701c0 RBX: ffff8801d8d29b40 RCX: ffffffff841bf1a9 [ 26.203581] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: ffffed003b3fddb8 [ 26.210817] RBP: ffff8801d9feee50 R08: ffffed003b3fdcef R09: ffff8801d9fee770 [ 26.218062] R10: 0000000000000001 R11: ffffed003b3fdcee R12: 000000000000000d [ 26.225303] R13: 00000000ffffffea R14: 0000000000000005 R15: 0000000000002000 [ 26.232570] ? snd_pcm_hw_param_first+0x289/0x690 [ 26.237402] snd_pcm_hw_param_near.constprop.27+0x78d/0x9a0 [ 26.243101] ? _snd_pcm_hw_param_set.constprop.26+0x6f0/0x6f0 [ 26.248953] ? snd_pcm_plugin_free+0xb1/0xe0 [ 26.253338] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.258344] ? trace_hardirqs_on+0xd/0x10 [ 26.262469] ? snd_pcm_plug_slave_size+0x148/0x2c0 [ 26.267369] snd_pcm_oss_change_params+0x17d3/0x3720 [ 26.272458] ? snd_pcm_hw_param_near.constprop.27+0x9a0/0x9a0 [ 26.278324] ? rcu_segcblist_first_pend_cb+0x90/0x90 [ 26.283401] ? __call_rcu.constprop.67+0x4a5/0xef0 [ 26.288310] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.293299] ? find_held_lock+0x35/0x1d0 [ 26.297337] ? mntput_no_expire+0x130/0xa90 [ 26.301637] ? lock_downgrade+0x980/0x980 [ 26.305755] ? lock_release+0xa40/0xa40 [ 26.309716] snd_pcm_oss_make_ready+0xaa/0x130 [ 26.314271] snd_pcm_oss_sync+0x257/0x830 [ 26.318392] ? snd_pcm_oss_sync1+0x550/0x550 [ 26.322785] ? fsnotify_first_mark+0x2b0/0x2b0 [ 26.327358] snd_pcm_oss_release+0x20b/0x280 [ 26.331743] ? snd_pcm_oss_sync+0x830/0x830 [ 26.336033] __fput+0x327/0x7e0 [ 26.339289] ? fput+0x140/0x140 [ 26.342541] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 26.348404] ? _raw_spin_unlock_irq+0x27/0x70 [ 26.352882] ____fput+0x15/0x20 [ 26.356134] task_work_run+0x199/0x270 [ 26.359995] ? task_work_cancel+0x210/0x210 [ 26.364286] ? _raw_spin_unlock+0x22/0x30 [ 26.368407] ? switch_task_namespaces+0x87/0xc0 [ 26.373061] do_exit+0x9bb/0x1ad0 [ 26.376484] ? snd_pcm_stream_unlock+0x80/0xd0 [ 26.381041] ? mm_update_next_owner+0x930/0x930 [ 26.385691] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 26.390855] ? do_raw_spin_trylock+0x190/0x190 [ 26.395406] ? snd_pcm_post_start+0x24e/0x310 [ 26.399882] ? snd_pcm_stream_unlock_irq+0x78/0xe0 [ 26.404784] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.409768] ? trace_hardirqs_on+0xd/0x10 [ 26.413884] ? snd_pcm_stream_unlock_irq+0xb1/0xe0 [ 26.418783] ? snd_pcm_action_lock_irq+0x38/0x50 [ 26.423508] ? snd_pcm_kernel_ioctl+0x19b/0x240 [ 26.428148] ? snd_pcm_oss_set_trigger+0x429/0x830 [ 26.433078] ? snd_pcm_oss_make_ready+0x130/0x130 [ 26.437898] ? check_noncircular+0x20/0x20 [ 26.442103] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.447093] ? snd_pcm_oss_poll+0x3c8/0xd20 [ 26.451389] ? snd_pcm_oss_set_trigger+0x830/0x830 [ 26.456286] ? __check_object_size+0x25d/0x4f0 [ 26.460833] ? mark_held_locks+0xaf/0x100 [ 26.464959] ? find_held_lock+0x35/0x1d0 [ 26.469006] ? get_signal+0x7ae/0x16c0 [ 26.472864] ? lock_downgrade+0x980/0x980 [ 26.477000] do_group_exit+0x149/0x400 [ 26.480855] ? do_raw_spin_trylock+0x190/0x190 [ 26.485404] ? SyS_exit+0x30/0x30 [ 26.488828] ? _raw_spin_unlock_irq+0x27/0x70 [ 26.493304] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.498293] get_signal+0x73f/0x16c0 [ 26.501991] ? ptrace_notify+0x130/0x130 [ 26.506022] ? __pmd_alloc+0x4e0/0x4e0 [ 26.509894] ? find_held_lock+0x35/0x1d0 [ 26.513941] ? handle_mm_fault+0x248/0x8d0 [ 26.518153] ? find_held_lock+0x35/0x1d0 [ 26.522197] do_signal+0x90/0x1eb0 [ 26.525717] ? setup_sigcontext+0x7d0/0x7d0 [ 26.530021] ? handle_mm_fault+0x410/0x8d0 [ 26.534222] ? down_read_trylock+0xdb/0x170 [ 26.539295] ? __do_page_fault+0x32d/0xc90 [ 26.543498] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 26.548052] ? vmacache_find+0x5f/0x280 [ 26.552001] ? up_read+0x1a/0x40 [ 26.555336] ? __do_page_fault+0x3d6/0xc90 [ 26.559535] ? may_open_dev+0xe0/0xe0 [ 26.563312] ? exit_to_usermode_loop+0x8c/0x310 [ 26.567952] exit_to_usermode_loop+0x214/0x310 [ 26.572505] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 26.578009] ? poll_select_set_timeout+0x12f/0x210 [ 26.582913] ? do_restart_poll+0x2a0/0x2a0 [ 26.587130] syscall_return_slowpath+0x490/0x550 [ 26.591862] ? prepare_exit_to_usermode+0x340/0x340 [ 26.596856] ? entry_SYSCALL_64_fastpath+0x6d/0x9a [ 26.601754] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.606741] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 26.611472] entry_SYSCALL_64_fastpath+0x98/0x9a [ 26.616195] RIP: 0033:0x44a849 [ 26.619355] RSP: 002b:00007f24977feda8 EFLAGS: 00000293 ORIG_RAX: 0000000000000007 [ 26.627041] RAX: fffffffffffffdfc RBX: 00000000006dcc24 RCX: 000000000044a849 [ 26.634284] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 000000002000e000 [ 26.641531] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 26.648778] R10: 0000000000000000 R11: 0000000000000293 R12: 00000000006dcc20 [ 26.656017] R13: 7073642f7665642f R14: 00800000c004500a R15: 0000000000000006 [ 26.663427] Dumping ftrace buffer: [ 26.666993] (ftrace buffer empty) [ 26.670681] Kernel Offset: disabled [ 26.674283] Rebooting in 86400 seconds..