[....] Starting enhanced syslogd: rsyslogd[ 11.794177] audit: type=1400 audit(1515606890.783:5): 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: [ 34.863227] audit: type=1400 audit(1515606913.853:6): avc: denied { map } for pid=3489 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 '10.128.0.57' (ECDSA) to the list of known hosts. executing program [ 40.924463] audit: type=1400 audit(1515606919.914:7): avc: denied { map } for pid=3501 comm="syzkaller879499" path="/root/syzkaller879499069" 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 [ 40.926620] WARNING: CPU: 1 PID: 3501 at sound/core/pcm_lib.c:563 snd_interval_mulkdiv+0x5a9/0x650 [ 40.926624] Kernel panic - not syncing: panic_on_warn set ... [ 40.926624] [ 40.926630] CPU: 1 PID: 3501 Comm: syzkaller879499 Not tainted 4.15.0-rc7+ #256 [ 40.926633] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.926635] Call Trace: [ 40.926645] dump_stack+0x194/0x257 [ 40.926653] ? arch_local_irq_restore+0x53/0x53 [ 40.926663] ? vsnprintf+0x1ed/0x1900 [ 40.926674] panic+0x1e4/0x41c [ 40.926679] ? refcount_error_report+0x214/0x214 [ 40.926685] ? show_regs_print_info+0x18/0x18 [ 40.926696] ? __warn+0x1c1/0x200 [ 40.926704] ? snd_interval_mulkdiv+0x5a9/0x650 [ 40.926708] __warn+0x1dc/0x200 [ 40.926713] ? snd_interval_mulkdiv+0x5a9/0x650 [ 40.926721] report_bug+0x211/0x2d0 [ 40.926736] fixup_bug.part.11+0x37/0x80 [ 40.926751] do_error_trap+0x2d7/0x3e0 [ 40.926760] ? math_error+0x400/0x400 [ 40.926767] ? __lock_acquire+0x664/0x3e00 [ 40.926773] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 40.926788] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.926798] do_invalid_op+0x1b/0x20 [ 40.926804] invalid_op+0x22/0x40 [ 40.926809] RIP: 0010:snd_interval_mulkdiv+0x5a9/0x650 [ 40.926812] RSP: 0018:ffff8801c04c7478 EFLAGS: 00010293 [ 40.926817] RAX: ffff8801c05f43c0 RBX: ffff8801c04c7500 RCX: ffffffff841cb1f9 [ 40.926819] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000f4240 [ 40.926822] RBP: ffff8801c04c74c0 R08: 000000000000009c R09: ffffed00380bc5e3 [ 40.926825] R10: 0000000000000013 R11: ffffed00380bc5e2 R12: ffff8801c05e2ec0 [ 40.926828] R13: ffff8801c05e2eb4 R14: ffff8801c05e2ec8 R15: ffff8801c05e2ebc [ 40.926839] ? snd_interval_mulkdiv+0x5a9/0x650 [ 40.926849] ? snd_interval_mulkdiv+0x5a9/0x650 [ 40.926853] ? check_noncircular+0x20/0x20 [ 40.926864] snd_pcm_hw_rule_mulkdiv+0xfd/0x1c0 [ 40.926871] ? snd_pcm_hw_rule_muldivk+0x1c0/0x1c0 [ 40.926878] ? __is_insn_slot_addr+0x1fc/0x330 [ 40.926883] ? check_noncircular+0x20/0x20 [ 40.926887] ? lock_downgrade+0x980/0x980 [ 40.926898] constrain_params_by_rules+0x625/0x11b0 [ 40.926909] ? __lock_acquire+0x664/0x3e00 [ 40.926929] ? snd_pcm_mmap_control_fault+0x380/0x380 [ 40.926932] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 40.926937] ? lock_downgrade+0x980/0x980 [ 40.926945] ? lock_release+0xa40/0xa40 [ 40.926954] ? is_bpf_text_address+0xa4/0x120 [ 40.926963] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 40.926970] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 40.926976] ? trace_hardirqs_on+0xd/0x10 [ 40.926985] ? depot_save_stack+0x3b5/0x490 [ 40.927008] ? do_vfs_ioctl+0x1b1/0x1520 [ 40.927011] ? SyS_ioctl+0x8f/0xc0 [ 40.927016] ? entry_SYSCALL_64_fastpath+0x23/0x9a [ 40.927020] ? snd_interval_refine+0x362/0x5d0 [ 40.927029] snd_pcm_hw_refine+0x818/0x1070 [ 40.927044] ? constrain_params_by_rules+0x11b0/0x11b0 [ 40.927056] ? __might_fault+0x110/0x1d0 [ 40.927062] ? lock_downgrade+0x980/0x980 [ 40.927070] ? lock_release+0xa40/0xa40 [ 40.927077] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 40.927083] ? __check_object_size+0x25d/0x4f0 [ 40.927094] ? __might_sleep+0x95/0x190 [ 40.927107] ? kasan_check_write+0x14/0x20 [ 40.927112] ? memcpy+0x45/0x50 [ 40.927123] snd_pcm_common_ioctl+0x7f9/0x1f60 [ 40.927134] ? snd_pcm_status_user+0x1b0/0x1b0 [ 40.927146] ? __do_page_fault+0x5f7/0xc90 [ 40.927173] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 40.927177] ? up_read+0x1a/0x40 [ 40.927186] ? rcu_note_context_switch+0x710/0x710 [ 40.927194] snd_pcm_ioctl+0x81/0xb0 [ 40.927201] ? snd_pcm_common_ioctl+0x1f60/0x1f60 [ 40.927205] do_vfs_ioctl+0x1b1/0x1520 [ 40.927209] ? _cond_resched+0x14/0x30 [ 40.927218] ? ioctl_preallocate+0x2b0/0x2b0 [ 40.927227] ? selinux_capable+0x40/0x40 [ 40.927240] ? SyS_getsockopt+0x18b/0x340 [ 40.927256] ? security_file_ioctl+0x89/0xb0 [ 40.927264] SyS_ioctl+0x8f/0xc0 [ 40.927273] entry_SYSCALL_64_fastpath+0x23/0x9a [ 40.927277] RIP: 0033:0x443d79 [ 40.927279] RSP: 002b:00007ffe547ec708 EFLAGS: 00000286 ORIG_RAX: 0000000000000010 [ 40.927283] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 0000000000443d79 [ 40.927286] RDX: 0000000020001f64 RSI: 00000000c1004110 RDI: 0000000000000003 [ 40.927288] RBP: 00000000006ce018 R08: 0000000000000000 R09: 0000000000000000 [ 40.927291] R10: 0000000020005000 R11: 0000000000000286 R12: 0000000000401a60 [ 40.927293] R13: 0000000000401af0 R14: 0000000000000000 R15: 0000000000000000 [ 40.950386] Dumping ftrace buffer: [ 40.950434] (ftrace buffer empty) [ 40.950437] Kernel Offset: disabled [ 41.382488] Rebooting in 86400 seconds..