[....] Starting enhanced syslogd: rsyslogd[ 11.925656] audit: type=1400 audit(1515384311.119:5): avc: denied { syslog } for pid=3348 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: [ 18.860207] audit: type=1400 audit(1515384318.053:6): 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 '10.128.15.233' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 25.062155] audit: type=1400 audit(1515384324.255:7): avc: denied { map } for pid=3503 comm="syzkaller606094" path="/root/syzkaller606094313" 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.343963] BUG: unable to handle kernel paging request at ffffc90001da6000 [ 27.351117] IP: memset_erms+0x9/0x10 [ 27.354819] PGD 1dad2c067 P4D 1dad2c067 PUD 1dad2d067 PMD 1caf50067 PTE 0 [ 27.361740] Oops: 0002 [#1] SMP KASAN [ 27.365531] Dumping ftrace buffer: [ 27.369061] (ftrace buffer empty) [ 27.372763] Modules linked in: [ 27.375943] CPU: 1 PID: 4272 Comm: syzkaller606094 Not tainted 4.15.0-rc6+ #251 [ 27.383368] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 executing program executing program executing program executing program executing program [ 27.392711] RIP: 0010:memset_erms+0x9/0x10 [ 27.396924] RSP: 0018:ffff8801bd1cf508 EFLAGS: 00010246 [ 27.402273] RAX: fffff520003f3c00 RBX: ffffc90001da6000 RCX: 00000000001f8200 [ 27.409536] RDX: 00000000001f8200 RSI: 0000000000000000 RDI: ffffc90001da6000 [ 27.416793] RBP: ffff8801bd1cf528 R08: 0000000000000000 R09: ffffc90001da6000 [ 27.424060] R10: 000000000003f040 R11: fffff520003f3c3f R12: 00000000001f8200 [ 27.431316] R13: 0000000000000000 R14: ffffffff86e6631c R15: 0000000000000010 executing program executing program [ 27.438571] FS: 00007fe118c24700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 27.446804] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.452676] CR2: ffffc90001da6000 CR3: 00000001be894006 CR4: 00000000001606e0 [ 27.459933] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.467183] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.474422] Call Trace: [ 27.476979] ? memset+0x31/0x40 [ 27.480231] snd_pcm_format_set_silence+0x13f/0x4b0 [ 27.485220] loopback_prepare+0xcdc/0x1000 [ 27.489426] snd_pcm_do_prepare+0x58/0x90 [ 27.493541] snd_pcm_action_single+0x70/0x110 [ 27.498006] snd_pcm_action_nonatomic+0x95/0xa0 [ 27.502645] snd_pcm_prepare+0x115/0x1a0 [ 27.506674] snd_pcm_kernel_ioctl+0x97/0x240 [ 27.511054] snd_pcm_oss_prepare+0x49/0x150 [ 27.515344] snd_pcm_oss_make_ready+0xf9/0x130 [ 27.519894] snd_pcm_oss_set_trigger+0x62d/0x830 [ 27.524628] ? snd_pcm_oss_make_ready+0x130/0x130 [ 27.529436] ? snd_pcm_stream_unlock_irq+0x78/0xe0 [ 27.534335] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 27.539322] snd_pcm_oss_poll+0x77c/0xd20 [ 27.543439] ? snd_pcm_oss_set_trigger+0x830/0x830 [ 27.548342] ? __check_object_size+0x25d/0x4f0 [ 27.552890] ? futex_wait_setup+0x3d0/0x3d0 [ 27.557181] ? __might_sleep+0x95/0x190 [ 27.561127] ? snd_pcm_oss_set_trigger+0x830/0x830 [ 27.566023] do_sys_poll+0x715/0x10b0 [ 27.569789] ? do_sys_poll+0x715/0x10b0 [ 27.573738] ? compat_core_sys_select+0x9e0/0x9e0 [ 27.578551] ? do_futex+0x86f/0x22a0 [ 27.582234] ? rcutorture_record_progress+0x10/0x10 [ 27.587231] ? __kernel_text_address+0xd/0x40 [ 27.591693] ? unwind_get_return_address+0x61/0xa0 [ 27.596592] ? __save_stack_trace+0x7e/0xd0 [ 27.600884] ? depot_save_stack+0x12c/0x490 [ 27.605178] ? putname+0xee/0x130 [ 27.608597] ? save_stack+0xa3/0xd0 [ 27.612190] ? save_stack+0x43/0xd0 [ 27.615788] ? debug_check_no_obj_freed+0x3da/0xf1f [ 27.620773] ? _raw_spin_unlock+0x22/0x30 [ 27.624897] ? free_obj_work+0x690/0x690 [ 27.628926] ? put_unused_fd+0x62/0x70 [ 27.632782] ? lock_downgrade+0x980/0x980 [ 27.637159] ? rcu_pm_notify+0xc0/0xc0 [ 27.641016] ? putname+0xee/0x130 [ 27.644438] ? putname+0xee/0x130 [ 27.647857] ? rcu_read_lock_sched_held+0x108/0x120 [ 27.652839] ? kmem_cache_free+0x267/0x2a0 [ 27.657041] ? poll_select_set_timeout+0x12f/0x210 [ 27.661936] ? do_restart_poll+0x2a0/0x2a0 [ 27.666137] ? SyS_futex+0x269/0x390 [ 27.669823] SyS_poll+0x10d/0x450 [ 27.673243] ? SyS_poll+0x10d/0x450 [ 27.676838] ? SyS_pselect6+0x650/0x650 [ 27.680779] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 27.686348] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 27.691077] entry_SYSCALL_64_fastpath+0x23/0x9a [ 27.695798] RIP: 0033:0x449a09 [ 27.698953] RSP: 002b:00007fe118c23da8 EFLAGS: 00000297 ORIG_RAX: 0000000000000007 [ 27.706627] RAX: ffffffffffffffda RBX: 00000000006dbc24 RCX: 0000000000449a09 [ 27.713862] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000020009fe0 [ 27.721097] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 27.728339] R10: 0000000000000000 R11: 0000000000000297 R12: 646e732f7665642f [ 27.735575] R13: 7073642f7665642f R14: 0000040000000fde R15: 0000000000000005 [ 27.742819] Code: 48 c1 e9 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 f3 48 ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1 aa 4c 89 c8 c3 90 49 89 fa 40 0f b6 ce 48 b8 01 01 01 01 01 [ 27.761908] RIP: memset_erms+0x9/0x10 RSP: ffff8801bd1cf508 [ 27.767581] CR2: ffffc90001da6000 [ 27.771003] ---[ end trace 786071e5cf0edbd2 ]--- [ 27.775726] Kernel panic - not syncing: Fatal exception [ 27.781080] Dumping ftrace buffer: [ 27.784585] (ftrace buffer empty) [ 27.788263] Kernel Offset: disabled [ 27.791858] Rebooting in 86400 seconds..