[....] Starting enhanced syslogd: rsyslogd[ 11.980843] audit: type=1400 audit(1515606955.894:5): avc: denied { syslog } for pid=3352 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: [ 16.495957] audit: type=1400 audit(1515606960.409:6): avc: denied { map } for pid=3491 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 '10.128.15.217' (ECDSA) to the list of known hosts. executing program [ 25.547685] audit: type=1400 audit(1515606969.461:7): avc: denied { map } for pid=3506 comm="syzkaller383435" path="/root/syzkaller383435341" 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 [ 25.549777] WARNING: CPU: 1 PID: 3506 at sound/core/pcm_lib.c:563 snd_interval_mulkdiv+0x5a9/0x650 [ 25.549781] Kernel panic - not syncing: panic_on_warn set ... [ 25.549781] [ 25.549786] CPU: 1 PID: 3506 Comm: syzkaller383435 Not tainted 4.15.0-rc7-next-20180110+ #93 [ 25.549791] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.549792] Call Trace: [ 25.549800] dump_stack+0x194/0x257 [ 25.549807] ? arch_local_irq_restore+0x53/0x53 [ 25.549817] ? vsnprintf+0x1ed/0x1900 [ 25.549828] panic+0x1e4/0x41c [ 25.549833] ? refcount_error_report+0x214/0x214 [ 25.549837] ? show_regs_print_info+0x18/0x18 [ 25.549848] ? __warn+0x1c1/0x200 [ 25.549857] ? snd_interval_mulkdiv+0x5a9/0x650 [ 25.549861] __warn+0x1dc/0x200 [ 25.549866] ? snd_interval_mulkdiv+0x5a9/0x650 [ 25.549873] report_bug+0x211/0x2d0 [ 25.549883] fixup_bug.part.11+0x37/0x80 [ 25.549888] do_error_trap+0x2d7/0x3e0 [ 25.549897] ? math_error+0x400/0x400 [ 25.549906] ? __lock_acquire+0x664/0x3e00 [ 25.549910] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 25.549914] ? mark_held_locks+0xaf/0x100 [ 25.549927] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.549936] do_invalid_op+0x1b/0x20 [ 25.549943] invalid_op+0x22/0x40 [ 25.549947] RIP: 0010:snd_interval_mulkdiv+0x5a9/0x650 [ 25.549950] RSP: 0018:ffff8801bff1f478 EFLAGS: 00010293 [ 25.549954] RAX: ffff8801c0368080 RBX: ffff8801bff1f500 RCX: ffffffff8421d7f9 [ 25.549957] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000f4240 [ 25.549959] RBP: ffff8801bff1f4c0 R08: 000000000000009c R09: ffffed0037f3c95b [ 25.549962] R10: 0000000000000013 R11: ffffed0037f3c95a R12: ffff8801bf9e4a80 [ 25.549965] R13: ffff8801bf9e4a74 R14: ffff8801bf9e4a88 R15: ffff8801bf9e4a7c [ 25.549977] ? snd_interval_mulkdiv+0x5a9/0x650 [ 25.549987] ? snd_interval_mulkdiv+0x5a9/0x650 [ 25.549991] ? check_noncircular+0x20/0x20 [ 25.550007] snd_pcm_hw_rule_mulkdiv+0xfd/0x1c0 [ 25.550014] ? snd_pcm_hw_rule_muldivk+0x1c0/0x1c0 [ 25.550020] ? __is_insn_slot_addr+0x1fc/0x330 [ 25.550027] ? check_noncircular+0x20/0x20 [ 25.550036] constrain_params_by_rules+0x625/0x11b0 [ 25.550048] ? __lock_acquire+0x664/0x3e00 [ 25.550067] ? snd_pcm_mmap_control_fault+0x380/0x380 [ 25.550071] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 25.550076] ? depot_save_stack+0x2ca/0x460 [ 25.550082] ? lock_downgrade+0x980/0x980 [ 25.550090] ? lock_release+0xa40/0xa40 [ 25.550097] ? is_bpf_text_address+0xa4/0x120 [ 25.550105] ? do_raw_spin_trylock+0x190/0x190 [ 25.550112] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 25.550119] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.550124] ? trace_hardirqs_on+0xd/0x10 [ 25.550132] ? depot_save_stack+0x2ca/0x460 [ 25.550151] ? do_vfs_ioctl+0x1b1/0x1520 [ 25.550155] ? SyS_ioctl+0x8f/0xc0 [ 25.550159] ? entry_SYSCALL_64_fastpath+0x29/0xa0 [ 25.550163] ? snd_interval_refine+0x362/0x5d0 [ 25.550177] snd_pcm_hw_refine+0x818/0x1070 [ 25.550191] ? constrain_params_by_rules+0x11b0/0x11b0 [ 25.550204] ? __might_fault+0x110/0x1d0 [ 25.550210] ? lock_downgrade+0x980/0x980 [ 25.550218] ? lock_release+0xa40/0xa40 [ 25.550224] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 25.550230] ? __check_object_size+0x8b/0x530 [ 25.550242] ? __might_sleep+0x95/0x190 [ 25.550255] ? kasan_check_write+0x14/0x20 [ 25.550261] ? memcpy+0x45/0x50 [ 25.550271] snd_pcm_common_ioctl+0x7f9/0x1f60 [ 25.550282] ? snd_pcm_status_user+0x1b0/0x1b0 [ 25.550294] ? __do_page_fault+0x5f7/0xc90 [ 25.550322] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 25.550326] ? up_read+0x1a/0x40 [ 25.550334] ? rcu_note_context_switch+0x710/0x710 [ 25.550342] snd_pcm_ioctl+0x81/0xb0 [ 25.550349] ? snd_pcm_common_ioctl+0x1f60/0x1f60 [ 25.550353] do_vfs_ioctl+0x1b1/0x1520 [ 25.550358] ? _cond_resched+0x14/0x30 [ 25.550368] ? ioctl_preallocate+0x2b0/0x2b0 [ 25.550377] ? selinux_capable+0x40/0x40 [ 25.550390] ? SyS_getsockopt+0x18b/0x340 [ 25.550406] ? security_file_ioctl+0x89/0xb0 [ 25.550415] SyS_ioctl+0x8f/0xc0 [ 25.550424] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 25.550427] RIP: 0033:0x443d79 [ 25.550430] RSP: 002b:00007fff9f41b448 EFLAGS: 00000286 ORIG_RAX: 0000000000000010 [ 25.550434] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 0000000000443d79 [ 25.550437] RDX: 0000000020001f64 RSI: 00000000c1004110 RDI: 0000000000000003 [ 25.550439] RBP: 00000000006ce018 R08: 0000000000000000 R09: 0000000000000000 [ 25.550441] R10: 0000000020005000 R11: 0000000000000286 R12: 0000000000401a60 [ 25.550443] R13: 0000000000401af0 R14: 0000000000000000 R15: 0000000000000000 [ 25.573890] Dumping ftrace buffer: [ 25.573919] (ftrace buffer empty) [ 25.573922] Kernel Offset: disabled [ 26.015643] Rebooting in 86400 seconds..