[....] Starting enhanced syslogd: rsyslogd[ 12.394509] audit: type=1400 audit(1515165079.239:5): avc: denied { syslog } for pid=3346 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: [ 18.877864] audit: type=1400 audit(1515165085.722:6): avc: denied { map } for pid=3486 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 '10.128.0.32' (ECDSA) to the list of known hosts. [ 29.709191] audit: type=1400 audit(1515165096.553:7): avc: denied { map } for pid=3501 comm="syzkaller659364" path="/root/syzkaller659364038" 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.syz4.accept_dad = 0 net.ipv6.conf.syz1.accept_dad = 0 net.ipv6.conf.syz5.accept_dad = 0 net.ipv6.conf.syz6.accept_dad = 0 net.ipv6.conf.syz2.accept_dad = 0 net.ipv6.conf.syz0.accept_dad = 0 net.ipv6.conf.syz3.accept_dad = 0 net.ipv6.conf.syz1.router_solicitations = 0 net.ipv6.conf.syz7.router_solicitations = 0 net.ipv6.conf.syz4.router_solicitations = 0 net.ipv6.conf.syz6.router_solicitations = 0 net.ipv6.conf.syz0.router_solicitations = 0 net.ipv6.conf.syz3.router_solicitations = 0 net.ipv6.conf.syz5.router_solicitations = 0 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program 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program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 40.191784] WARNING: CPU: 1 PID: 14295 at sound/core/pcm_lib.c:1635 snd_pcm_hw_param_first+0x289/0x690 [ 40.201283] Kernel panic - not syncing: panic_on_warn set ... [ 40.201283] [ 40.208637] CPU: 1 PID: 14295 Comm: syzkaller659364 Not tainted 4.15.0-rc6+ #158 [ 40.216149] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.225485] Call Trace: [ 40.228065] dump_stack+0x194/0x257 [ 40.231691] ? arch_local_irq_restore+0x53/0x53 [ 40.236357] ? vsnprintf+0x1ed/0x1900 executing program executing program executing program executing program [ 40.240155] panic+0x1e4/0x41c [ 40.243337] ? refcount_error_report+0x214/0x214 [ 40.248078] ? show_regs_print_info+0x18/0x18 [ 40.252573] ? __warn+0x1c1/0x200 [ 40.256023] ? snd_pcm_hw_param_first+0x289/0x690 [ 40.260851] __warn+0x1dc/0x200 [ 40.264118] ? snd_pcm_hw_param_first+0x289/0x690 [ 40.268955] report_bug+0x211/0x2d0 [ 40.272580] fixup_bug.part.11+0x37/0x80 [ 40.276631] do_error_trap+0x2d7/0x3e0 [ 40.280507] ? snd_pcm_oss_release+0x20b/0x280 [ 40.285073] ? __fput+0x327/0x7e0 [ 40.288511] ? ____fput+0x15/0x20 [ 40.291960] ? math_error+0x400/0x400 [ 40.295746] ? exit_to_usermode_loop+0x214/0x310 [ 40.300488] ? do_fast_syscall_32+0xbfd/0xf9d [ 40.304972] ? entry_SYSENTER_compat+0x54/0x63 [ 40.309547] ? check_noncircular+0x20/0x20 [ 40.313775] ? print_irqtrace_events+0x270/0x270 [ 40.318529] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.323370] do_invalid_op+0x1b/0x20 [ 40.327072] invalid_op+0x22/0x40 [ 40.330511] RIP: 0010:snd_pcm_hw_param_first+0x289/0x690 [ 40.335942] RSP: 0018:ffff8801ca096d40 EFLAGS: 00010293 [ 40.341294] RAX: ffff8801c31261c0 RBX: ffff8801c3465200 RCX: ffffffff841bf1a9 [ 40.348553] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: ffffed0039412da0 [ 40.355812] RBP: ffff8801ca096d90 R08: ffffed0039412cd7 R09: ffff8801ca0966b0 [ 40.363070] R10: 0000000000000001 R11: ffffed0039412cd6 R12: 000000000000000d [ 40.370328] R13: 00000000ffffffea R14: 0000000000000005 R15: 0000000000002000 [ 40.377608] ? snd_pcm_hw_param_first+0x289/0x690 [ 40.382471] snd_pcm_hw_param_near.constprop.27+0x78d/0x9a0 [ 40.388194] ? _snd_pcm_hw_param_set.constprop.26+0x6f0/0x6f0 [ 40.394077] ? snd_pcm_plugin_free+0xb1/0xe0 [ 40.398479] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 40.403487] ? trace_hardirqs_on+0xd/0x10 [ 40.407630] ? snd_pcm_plug_slave_size+0x148/0x2c0 [ 40.412558] snd_pcm_oss_change_params+0x17d3/0x3720 [ 40.417684] ? snd_pcm_hw_param_near.constprop.27+0x9a0/0x9a0 [ 40.423563] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 40.428744] ? lock_downgrade+0x980/0x980 [ 40.432897] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 40.438078] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 40.443273] ? rcutorture_record_progress+0x10/0x10 [ 40.448304] ? is_bpf_text_address+0xa4/0x120 [ 40.452795] ? kernel_text_address+0x102/0x140 [ 40.457373] ? __kernel_text_address+0xd/0x40 [ 40.461861] ? unwind_get_return_address+0x61/0xa0 [ 40.466789] ? check_noncircular+0x20/0x20 [ 40.471035] snd_pcm_oss_make_ready+0xaa/0x130 [ 40.475614] snd_pcm_oss_sync+0x257/0x830 [ 40.479761] ? snd_pcm_oss_sync1+0x550/0x550 [ 40.484164] ? fsnotify_first_mark+0x2b0/0x2b0 [ 40.488747] snd_pcm_oss_release+0x20b/0x280 [ 40.493149] ? snd_pcm_oss_sync+0x830/0x830 [ 40.497458] __fput+0x327/0x7e0 [ 40.500738] ? fput+0x140/0x140 [ 40.504012] ? _raw_spin_unlock_irq+0x27/0x70 [ 40.508510] ____fput+0x15/0x20 [ 40.511784] task_work_run+0x199/0x270 [ 40.515669] ? task_work_cancel+0x210/0x210 [ 40.519986] ? _raw_spin_unlock+0x22/0x30 [ 40.524125] ? switch_task_namespaces+0x87/0xc0 [ 40.528794] do_exit+0x9bb/0x1ad0 [ 40.532240] ? find_held_lock+0x35/0x1d0 [ 40.536301] ? mm_update_next_owner+0x930/0x930 [ 40.540964] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 40.546145] ? lock_downgrade+0x980/0x980 [ 40.550290] ? __unqueue_futex+0x1c0/0x290 [ 40.554512] ? lock_release+0xa40/0xa40 [ 40.558477] ? fault_in_user_writeable+0x90/0x90 [ 40.563230] ? do_raw_spin_trylock+0x190/0x190 [ 40.567802] ? futex_wake+0x680/0x680 [ 40.571604] ? drop_futex_key_refs.isra.12+0x63/0xb0 [ 40.576695] ? futex_wait+0x6a9/0x9a0 [ 40.580502] ? check_noncircular+0x20/0x20 [ 40.584729] ? switched_to_fair+0xb0/0xb0 [ 40.588875] ? __enqueue_entity+0x109/0x1e0 [ 40.593206] ? find_held_lock+0x35/0x1d0 [ 40.597269] ? get_signal+0x7ae/0x16c0 [ 40.601153] ? lock_downgrade+0x980/0x980 [ 40.605306] do_group_exit+0x149/0x400 [ 40.609183] ? do_raw_spin_trylock+0x190/0x190 [ 40.613754] ? SyS_exit+0x30/0x30 [ 40.617196] ? _raw_spin_unlock_irq+0x27/0x70 [ 40.621683] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 40.626696] get_signal+0x73f/0x16c0 [ 40.630414] ? ptrace_notify+0x130/0x130 [ 40.634471] ? __schedule+0x8f3/0x2060 [ 40.638359] ? __sched_text_start+0x8/0x8 [ 40.642517] do_signal+0x90/0x1eb0 [ 40.646046] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 40.651923] ? rcu_note_context_switch+0x710/0x710 [ 40.656846] ? setup_sigcontext+0x7d0/0x7d0 [ 40.661158] ? __might_sleep+0x95/0x190 [ 40.665128] ? schedule+0xf5/0x430 [ 40.668658] ? __schedule+0x2060/0x2060 [ 40.672626] ? selinux_capable+0x40/0x40 [ 40.676695] ? exit_to_usermode_loop+0x8c/0x310 [ 40.681366] exit_to_usermode_loop+0x214/0x310 [ 40.685941] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 40.691463] ? lock_downgrade+0x980/0x980 [ 40.695600] ? do_fast_syscall_32+0x156/0xf9d [ 40.700093] do_fast_syscall_32+0xbfd/0xf9d [ 40.704406] ? do_raw_spin_trylock+0x190/0x190 [ 40.708982] ? do_int80_syscall_32+0x9d0/0x9d0 [ 40.713563] ? syscall_return_slowpath+0x2ad/0x550 [ 40.718486] ? prepare_exit_to_usermode+0x340/0x340 [ 40.723498] ? sysret32_from_system_call+0x5/0x3b [ 40.728340] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.733184] entry_SYSENTER_compat+0x54/0x63 [ 40.737576] RIP: 0023:0xf7f8dc79 [ 40.740922] RSP: 002b:00000000f7f471ec EFLAGS: 00000296 ORIG_RAX: 00000000000000f0 [ 40.748615] RAX: fffffffffffffe00 RBX: 00000000080fe024 RCX: 0000000000000000 [ 40.755870] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000080fe024 [ 40.763126] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 [ 40.770380] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 40.777636] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 40.785498] Dumping ftrace buffer: [ 40.789078] (ftrace buffer empty) [ 40.792755] Kernel Offset: disabled [ 40.796352] Rebooting in 86400 seconds..