[....] Starting enhanced syslogd: rsyslogd[ 12.683891] audit: type=1400 audit(1515606909.288:5): avc: denied { syslog } for pid=3349 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: [ 19.491365] audit: type=1400 audit(1515606916.096:6): 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 '10.128.0.47' (ECDSA) to the list of known hosts. executing program [ 25.673446] audit: type=1400 audit(1515606922.278:7): avc: denied { map } for pid=3503 comm="syzkaller306698" path="/root/syzkaller306698468" 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 [ 25.676263] WARNING: CPU: 0 PID: 3503 at sound/core/pcm_lib.c:563 snd_interval_mulkdiv+0x5a9/0x650 [ 25.676268] Kernel panic - not syncing: panic_on_warn set ... [ 25.676268] [ 25.676276] CPU: 0 PID: 3503 Comm: syzkaller306698 Not tainted 4.15.0-rc6-mm1+ #52 [ 25.676280] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.676282] Call Trace: [ 25.676293] dump_stack+0x194/0x257 [ 25.676306] ? arch_local_irq_restore+0x53/0x53 [ 25.676320] ? vsnprintf+0x1ed/0x1900 [ 25.676337] panic+0x1e4/0x41c [ 25.676345] ? refcount_error_report+0x214/0x214 [ 25.676354] ? show_regs_print_info+0x18/0x18 [ 25.676372] ? __warn+0x1c1/0x200 [ 25.676384] ? snd_interval_mulkdiv+0x5a9/0x650 [ 25.676391] __warn+0x1dc/0x200 [ 25.676399] ? snd_interval_mulkdiv+0x5a9/0x650 [ 25.676411] report_bug+0x211/0x2d0 [ 25.676426] fixup_bug.part.11+0x37/0x80 [ 25.676438] do_error_trap+0x2d7/0x3e0 [ 25.676451] ? math_error+0x400/0x400 [ 25.676463] ? __lock_acquire+0x664/0x3e00 [ 25.676473] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 25.676480] ? mark_held_locks+0xaf/0x100 [ 25.676499] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.676514] do_invalid_op+0x1b/0x20 [ 25.676522] invalid_op+0x22/0x40 [ 25.676528] RIP: 0010:snd_interval_mulkdiv+0x5a9/0x650 [ 25.676532] RSP: 0018:ffff8801c7567478 EFLAGS: 00010293 [ 25.676539] RAX: ffff8801c0778580 RBX: ffff8801c7567500 RCX: ffffffff84210b99 [ 25.676543] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000f4240 [ 25.676548] RBP: ffff8801c75674c0 R08: 000000000000009c R09: ffffed003802ea7b [ 25.676552] R10: 0000000000000013 R11: ffffed003802ea7a R12: ffff8801c0175380 [ 25.676556] R13: ffff8801c0175374 R14: ffff8801c0175388 R15: ffff8801c017537c [ 25.676575] ? snd_interval_mulkdiv+0x5a9/0x650 [ 25.676590] ? snd_interval_mulkdiv+0x5a9/0x650 [ 25.676596] ? check_noncircular+0x20/0x20 [ 25.676614] snd_pcm_hw_rule_mulkdiv+0xfd/0x1c0 [ 25.676626] ? snd_pcm_hw_rule_muldivk+0x1c0/0x1c0 [ 25.676633] ? __is_insn_slot_addr+0x1fc/0x330 [ 25.676645] ? check_noncircular+0x20/0x20 [ 25.676659] constrain_params_by_rules+0x625/0x11b0 [ 25.676678] ? __lock_acquire+0x664/0x3e00 [ 25.676713] ? snd_pcm_mmap_control_fault+0x380/0x380 [ 25.676719] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 25.676727] ? depot_save_stack+0x2ca/0x460 [ 25.676736] ? lock_downgrade+0x980/0x980 [ 25.676749] ? lock_release+0xa40/0xa40 [ 25.676759] ? is_bpf_text_address+0xa4/0x120 [ 25.676770] ? do_raw_spin_trylock+0x190/0x190 [ 25.676781] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 25.676792] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.676801] ? trace_hardirqs_on+0xd/0x10 [ 25.676813] ? depot_save_stack+0x2ca/0x460 [ 25.676841] ? do_vfs_ioctl+0x1b1/0x1520 [ 25.676855] ? SyS_ioctl+0x8f/0xc0 [ 25.676861] ? entry_SYSCALL_64_fastpath+0x23/0x9a [ 25.676868] ? snd_interval_refine+0x362/0x5d0 [ 25.676881] snd_pcm_hw_refine+0x818/0x1070 [ 25.676903] ? constrain_params_by_rules+0x11b0/0x11b0 [ 25.676923] ? __might_fault+0x110/0x1d0 [ 25.676932] ? lock_downgrade+0x980/0x980 [ 25.676945] ? lock_release+0xa40/0xa40 [ 25.676954] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 25.676964] ? __check_object_size+0x8b/0x530 [ 25.676990] ? __might_sleep+0x95/0x190 [ 25.677012] ? kasan_check_write+0x14/0x20 [ 25.677021] ? memcpy+0x45/0x50 [ 25.677041] snd_pcm_common_ioctl+0x7f9/0x1f60 [ 25.677059] ? snd_pcm_status_user+0x1b0/0x1b0 [ 25.677076] ? __do_page_fault+0x5f7/0xc90 [ 25.677121] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 25.677128] ? up_read+0x1a/0x40 [ 25.677140] ? rcu_note_context_switch+0x710/0x710 [ 25.677152] snd_pcm_ioctl+0x81/0xb0 [ 25.677162] ? snd_pcm_common_ioctl+0x1f60/0x1f60 [ 25.677170] do_vfs_ioctl+0x1b1/0x1520 [ 25.677177] ? _cond_resched+0x14/0x30 [ 25.677192] ? ioctl_preallocate+0x2b0/0x2b0 [ 25.677205] ? selinux_capable+0x40/0x40 [ 25.677226] ? SyS_getsockopt+0x18b/0x340 [ 25.677251] ? security_file_ioctl+0x89/0xb0 [ 25.677264] SyS_ioctl+0x8f/0xc0 [ 25.677279] entry_SYSCALL_64_fastpath+0x23/0x9a [ 25.677284] RIP: 0033:0x443d79 [ 25.677287] RSP: 002b:00007ffc3b81c978 EFLAGS: 00000286 ORIG_RAX: 0000000000000010 [ 25.677295] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 0000000000443d79 [ 25.677299] RDX: 0000000020001f64 RSI: 00000000c1004110 RDI: 0000000000000003 [ 25.677303] RBP: 00000000006ce018 R08: 0000000000000000 R09: 0000000000000000 [ 25.677307] R10: 0000000020005000 R11: 0000000000000286 R12: 0000000000401a60 [ 25.677310] R13: 0000000000401af0 R14: 0000000000000000 R15: 0000000000000000 [ 25.700572] Dumping ftrace buffer: [ 25.700656] (ftrace buffer empty) [ 25.700659] Kernel Offset: disabled [ 26.150512] Rebooting in 86400 seconds..