[....] Starting enhanced syslogd: rsyslogd[ 12.568361] audit: type=1400 audit(1514874321.772:5): avc: denied { syslog } for pid=3339 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 file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 18.772903] audit: type=1400 audit(1514874327.976:6): 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 '10.128.15.193' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 24.986216] audit: type=1400 audit(1514874334.190:7): avc: denied { map } for pid=3495 comm="syzkaller119354" path="/root/syzkaller119354501" 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 [ 25.153708] WARNING: CPU: 1 PID: 3523 at sound/core/pcm_lib.c:1681 snd_pcm_hw_param_last+0x28b/0x670 [ 25.163063] Kernel panic - not syncing: panic_on_warn set ... [ 25.163063] [ 25.170423] CPU: 1 PID: 3523 Comm: syzkaller119354 Not tainted 4.15.0-rc6+ #155 [ 25.177858] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.187201] Call Trace: [ 25.189789] dump_stack+0x194/0x257 [ 25.193416] ? arch_local_irq_restore+0x53/0x53 [ 25.198090] ? vsnprintf+0x1ed/0x1900 executing program executing program executing program executing program [ 25.201890] panic+0x1e4/0x41c [ 25.205099] ? refcount_error_report+0x214/0x214 [ 25.209842] ? show_regs_print_info+0x18/0x18 [ 25.214340] ? __warn+0x1c1/0x200 [ 25.217789] ? snd_pcm_hw_param_last+0x28b/0x670 [ 25.222536] __warn+0x1dc/0x200 [ 25.225816] ? snd_pcm_hw_param_last+0x28b/0x670 [ 25.230568] report_bug+0x211/0x2d0 [ 25.234194] fixup_bug.part.11+0x37/0x80 [ 25.238247] do_error_trap+0x2d7/0x3e0 [ 25.242127] ? snd_pcm_oss_release+0x20b/0x280 [ 25.246706] ? __fput+0x327/0x7e0 [ 25.250150] ? ____fput+0x15/0x20 executing program executing program executing program [ 25.253631] ? math_error+0x400/0x400 [ 25.257420] ? entry_SYSENTER_compat+0x54/0x63 [ 25.261995] ? check_noncircular+0x20/0x20 [ 25.266221] ? print_irqtrace_events+0x270/0x270 [ 25.270975] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.275812] do_invalid_op+0x1b/0x20 [ 25.279526] invalid_op+0x22/0x40 [ 25.282977] RIP: 0010:snd_pcm_hw_param_last+0x28b/0x670 [ 25.288327] RSP: 0018:ffff8801bbb671a8 EFLAGS: 00010293 [ 25.293691] RAX: ffff8801bbb46500 RBX: ffff8801c1f8c940 RCX: ffffffff841bb75b executing program executing program executing program executing program [ 25.300946] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: ffffed003776ce28 [ 25.308202] RBP: ffff8801bbb671f0 R08: ffffed003776cd64 R09: ffff8801bbb66b18 [ 25.315465] R10: 0000000000000001 R11: ffffed003776cd63 R12: 000000000000000f [ 25.322725] R13: 00000000ffffffea R14: 0000000000000007 R15: 0000000000008000 [ 25.330012] ? snd_pcm_hw_param_last+0x28b/0x670 [ 25.334770] ? snd_pcm_hw_param_last+0x28b/0x670 [ 25.339531] snd_pcm_hw_param_near.constprop.27+0x6f5/0x9a0 [ 25.345247] ? _snd_pcm_hw_param_set.constprop.26+0x6f0/0x6f0 [ 25.351128] ? snd_pcm_hw_param_max+0x5f0/0x5f0 [ 25.355792] ? _snd_pcm_hw_param_any+0x184/0x280 [ 25.360561] ? snd_pcm_plug_slave_size+0x148/0x2c0 [ 25.365514] snd_pcm_oss_change_params+0x1833/0x3720 [ 25.370618] ? snd_pcm_hw_param_near.constprop.27+0x9a0/0x9a0 [ 25.376476] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 25.381637] ? lock_downgrade+0x980/0x980 [ 25.385764] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 25.390925] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 25.396092] ? rcutorture_record_progress+0x10/0x10 [ 25.401090] ? is_bpf_text_address+0xa4/0x120 [ 25.405556] ? kernel_text_address+0x102/0x140 [ 25.410113] ? __kernel_text_address+0xd/0x40 [ 25.414580] ? unwind_get_return_address+0x61/0xa0 [ 25.419487] ? check_noncircular+0x20/0x20 [ 25.423710] snd_pcm_oss_make_ready+0xaa/0x130 [ 25.428267] snd_pcm_oss_sync+0x34b/0x830 [ 25.432389] ? snd_pcm_oss_sync1+0x550/0x550 [ 25.436771] ? fsnotify_first_mark+0x2b0/0x2b0 [ 25.441330] snd_pcm_oss_release+0x20b/0x280 [ 25.445709] ? snd_pcm_oss_sync+0x830/0x830 [ 25.450787] __fput+0x327/0x7e0 [ 25.454045] ? fput+0x140/0x140 [ 25.457308] ? _raw_spin_unlock_irq+0x27/0x70 [ 25.461783] ____fput+0x15/0x20 [ 25.465130] task_work_run+0x199/0x270 [ 25.469002] ? task_work_cancel+0x210/0x210 [ 25.473298] ? _raw_spin_unlock+0x22/0x30 [ 25.477426] ? switch_task_namespaces+0x87/0xc0 [ 25.482073] do_exit+0x9bb/0x1ad0 [ 25.485503] ? kernel_text_address+0xf1/0x140 [ 25.489969] ? mm_update_next_owner+0x930/0x930 [ 25.494609] ? __kernel_text_address+0xd/0x40 [ 25.499078] ? unwind_get_return_address+0x61/0xa0 [ 25.503982] ? __save_stack_trace+0x7e/0xd0 [ 25.508288] ? depot_save_stack+0x12c/0x490 [ 25.512586] ? putname+0xee/0x130 [ 25.516018] ? save_stack+0xa3/0xd0 [ 25.519616] ? save_stack+0x43/0xd0 [ 25.523220] ? kasan_slab_free+0x71/0xc0 [ 25.527252] ? kmem_cache_free+0x83/0x2a0 [ 25.531368] ? putname+0xee/0x130 [ 25.534791] ? do_sys_open+0x31b/0x6d0 [ 25.538655] ? compat_SyS_open+0x2a/0x40 [ 25.542694] ? do_fast_syscall_32+0x3ee/0xf9d [ 25.547161] ? entry_SYSENTER_compat+0x54/0x63 [ 25.551715] ? debug_check_no_obj_freed+0x3da/0xf1f [ 25.556703] ? __lock_is_held+0xb6/0x140 [ 25.560749] ? free_obj_work+0x690/0x690 [ 25.564781] ? __fd_install+0x288/0x740 [ 25.568730] ? get_unused_fd_flags+0x190/0x190 [ 25.573284] ? may_open_dev+0xe0/0xe0 [ 25.577065] ? rcu_pm_notify+0xc0/0xc0 [ 25.580926] ? putname+0xee/0x130 [ 25.584364] ? putname+0xee/0x130 [ 25.587789] ? rcu_read_lock_sched_held+0x108/0x120 [ 25.592777] ? kmem_cache_free+0x267/0x2a0 [ 25.596986] ? putname+0xf3/0x130 [ 25.600418] do_group_exit+0x149/0x400 [ 25.604280] ? SyS_exit+0x30/0x30 [ 25.607718] ? do_fast_syscall_32+0x156/0xf9d [ 25.612186] ? do_group_exit+0x400/0x400 [ 25.616220] SyS_exit_group+0x1d/0x20 [ 25.619993] do_fast_syscall_32+0x3ee/0xf9d [ 25.624297] ? do_int80_syscall_32+0x9d0/0x9d0 [ 25.628859] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 25.633592] ? syscall_return_slowpath+0x2ad/0x550 [ 25.638497] ? prepare_exit_to_usermode+0x340/0x340 [ 25.643493] ? sysret32_from_system_call+0x5/0x3b [ 25.648321] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.653142] entry_SYSENTER_compat+0x54/0x63 [ 25.657521] RIP: 0023:0xf7f29c79 [ 25.660853] RSP: 002b:00000000fffeb51c EFLAGS: 00000286 ORIG_RAX: 00000000000000fc [ 25.668531] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000000000 [ 25.675773] RDX: 000000006e370900 RSI: 0000000020003ff8 RDI: 00000000c0045005 [ 25.683018] RBP: 00000000080724c6 R08: 0000000000000000 R09: 0000000000000000 [ 25.690267] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 25.697506] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 25.705400] Dumping ftrace buffer: [ 25.708996] (ftrace buffer empty) [ 25.712674] Kernel Offset: disabled [ 25.716283] Rebooting in 86400 seconds..