[....] Starting enhanced syslogd: rsyslogd[ 11.696545] audit: type=1400 audit(1514788327.242:5): 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 mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] 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: [ 16.612808] audit: type=1400 audit(1514788332.158:6): avc: denied { map } for pid=3480 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 '10.128.0.59' (ECDSA) to the list of known hosts. [ 22.804960] audit: type=1400 audit(1514788338.350:7): avc: denied { map } for pid=3494 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16479 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2018/01/01 06:32:18 parsed 1 programs 2018/01/01 06:32:18 executed programs: 0 [ 22.940800] audit: type=1400 audit(1514788338.485:8): avc: denied { map } for pid=3494 comm="syz-execprog" path="/root/syzkaller-shm509715546" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 2018/01/01 06:32:23 executed programs: 323 [ 29.419457] WARNING: CPU: 1 PID: 4856 at sound/core/pcm_lib.c:1681 snd_pcm_hw_param_last+0x28b/0x670 [ 29.428759] Kernel panic - not syncing: panic_on_warn set ... [ 29.428759] [ 29.436092] CPU: 1 PID: 4856 Comm: syz-executor7 Not tainted 4.15.0-rc6+ #245 [ 29.443338] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.452679] Call Trace: [ 29.455252] dump_stack+0x194/0x257 [ 29.458875] ? arch_local_irq_restore+0x53/0x53 [ 29.463534] ? vsnprintf+0x1ed/0x1900 [ 29.467323] panic+0x1e4/0x41c [ 29.470505] ? refcount_error_report+0x214/0x214 [ 29.475243] ? show_regs_print_info+0x18/0x18 [ 29.479737] ? __warn+0x1c1/0x200 [ 29.483178] ? snd_pcm_hw_param_last+0x28b/0x670 [ 29.487917] __warn+0x1dc/0x200 [ 29.491185] ? snd_pcm_hw_param_last+0x28b/0x670 [ 29.495924] report_bug+0x211/0x2d0 [ 29.499542] fixup_bug.part.11+0x37/0x80 [ 29.503593] do_error_trap+0x2d7/0x3e0 [ 29.507462] ? snd_pcm_oss_ioctl+0x1dcc/0x39f0 [ 29.512028] ? do_vfs_ioctl+0x1b1/0x1520 [ 29.516075] ? SyS_ioctl+0x8f/0xc0 [ 29.519606] ? math_error+0x400/0x400 [ 29.523399] ? check_noncircular+0x20/0x20 [ 29.527613] ? print_irqtrace_events+0x270/0x270 [ 29.532342] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.537160] do_invalid_op+0x1b/0x20 [ 29.540846] invalid_op+0x22/0x40 [ 29.544270] RIP: 0010:snd_pcm_hw_param_last+0x28b/0x670 [ 29.549603] RSP: 0018:ffff8801d5e07498 EFLAGS: 00010293 [ 29.554936] RAX: ffff8801d5fe2080 RBX: ffff8801d5587200 RCX: ffffffff841bb75b [ 29.562176] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: ffffed003abc0e88 [ 29.569415] RBP: ffff8801d5e074e0 R08: 0000000000000001 R09: 0000000000000000 [ 29.576652] R10: 0000000000000000 R11: 0000000000000000 R12: 000000000000000a [ 29.583889] R13: 00000000ffffffea R14: 0000000000000002 R15: 0000000000000400 [ 29.591138] ? snd_pcm_hw_param_last+0x28b/0x670 [ 29.595867] ? snd_pcm_hw_param_last+0x28b/0x670 [ 29.600605] snd_pcm_hw_param_near.constprop.27+0x6f5/0x9a0 [ 29.606286] ? __lock_is_held+0xb6/0x140 [ 29.610325] ? _snd_pcm_hw_param_set.constprop.26+0x6f0/0x6f0 [ 29.616179] ? mark_held_locks+0xaf/0x100 [ 29.620297] ? kfree+0xf0/0x260 [ 29.623546] ? snd_pcm_oss_change_params+0x27f8/0x3720 [ 29.628791] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 29.633775] ? trace_hardirqs_on+0xd/0x10 [ 29.637895] snd_pcm_oss_change_params+0xb3d/0x3720 [ 29.642905] ? snd_pcm_hw_param_near.constprop.27+0x9a0/0x9a0 [ 29.648759] ? futex_wait_setup+0x22e/0x3d0 [ 29.653059] ? check_noncircular+0x20/0x20 [ 29.657259] ? futex_wake+0x680/0x680 [ 29.661033] ? __lock_acquire+0x664/0x3e00 [ 29.665234] ? switched_to_fair+0xb0/0xb0 [ 29.669348] ? drop_futex_key_refs.isra.12+0x63/0xb0 [ 29.674419] ? futex_wait+0x6a9/0x9a0 [ 29.678198] ? find_held_lock+0x35/0x1d0 [ 29.682239] ? lock_downgrade+0x980/0x980 [ 29.686362] snd_pcm_oss_get_active_substream+0x10c/0x150 [ 29.691875] snd_pcm_oss_set_channels+0x23e/0x3a0 [ 29.696689] ? snd_pcm_oss_get_active_substream+0x150/0x150 [ 29.702369] ? __might_sleep+0x95/0x190 [ 29.706321] snd_pcm_oss_ioctl+0x1dcc/0x39f0 [ 29.710707] ? lock_release+0xa40/0xa40 [ 29.714654] ? snd_pcm_oss_release+0x280/0x280 [ 29.719222] ? avc_has_extended_perms+0x7fa/0x12c0 [ 29.724125] ? find_held_lock+0x35/0x1d0 [ 29.728172] ? avc_ss_reset+0x110/0x110 [ 29.732112] ? lock_downgrade+0x980/0x980 [ 29.736231] ? lock_release+0xa40/0xa40 [ 29.740177] ? __lock_is_held+0xb6/0x140 [ 29.744233] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 29.750090] ? up_read+0x1a/0x40 [ 29.753427] ? rcu_note_context_switch+0x710/0x710 [ 29.758332] ? snd_pcm_oss_release+0x280/0x280 [ 29.762882] do_vfs_ioctl+0x1b1/0x1520 [ 29.766737] ? _cond_resched+0x14/0x30 [ 29.770609] ? ioctl_preallocate+0x2b0/0x2b0 [ 29.774989] ? selinux_capable+0x40/0x40 [ 29.779029] ? SyS_futex+0x269/0x390 [ 29.782729] ? security_file_ioctl+0x89/0xb0 [ 29.787110] SyS_ioctl+0x8f/0xc0 [ 29.790452] entry_SYSCALL_64_fastpath+0x23/0x9a [ 29.795173] RIP: 0033:0x452ac9 [ 29.798329] RSP: 002b:00007fa5a61bec58 EFLAGS: 00000212 ORIG_RAX: 0000000000000010 [ 29.806004] RAX: ffffffffffffffda RBX: 000000000071bf58 RCX: 0000000000452ac9 [ 29.813245] RDX: 0000000020004ff8 RSI: 00800000c0045006 RDI: 0000000000000003 [ 29.820482] RBP: 00000000000000ef R08: 0000000000000000 R09: 0000000000000000 [ 29.827719] R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006ef708 [ 29.834958] R13: 00000000ffffffff R14: 00007fa5a61bf6d4 R15: 0000000000000002 [ 29.842818] Dumping ftrace buffer: [ 29.846396] (ftrace buffer empty) [ 29.850083] Kernel Offset: disabled [ 29.853687] Rebooting in 86400 seconds..