[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [ 12.842978] mcstransd (3042) used greatest stack depth: 14504 bytes left 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: [ 18.188972] audit: type=1400 audit(1513820994.247:6): avc: denied { map } for pid=3129 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 'ci-upstream-mmots-kasan-gce-4,10.128.15.216' (ECDSA) to the list of known hosts. executing program [ 24.449014] audit: type=1400 audit(1513821000.507:7): avc: denied { map } for pid=3143 comm="syzkaller940489" path="/root/syzkaller940489136" 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 [ 24.451856] WARNING: CPU: 0 PID: 3143 at kernel/sched/wait.c:79 __wake_up_common+0x433/0x770 [ 24.451872] Kernel panic - not syncing: panic_on_warn set ... [ 24.451872] [ 24.451882] CPU: 0 PID: 3143 Comm: syzkaller940489 Not tainted 4.15.0-rc2-mm1+ #39 [ 24.451888] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.451893] Call Trace: [ 24.451907] dump_stack+0x194/0x257 [ 24.451922] ? arch_local_irq_restore+0x53/0x53 [ 24.451940] ? vsnprintf+0x1ed/0x1900 [ 24.451958] panic+0x1e4/0x41c [ 24.451968] ? refcount_error_report+0x214/0x214 [ 24.451979] ? show_regs_print_info+0x18/0x18 [ 24.452000] ? __warn+0x1c1/0x200 [ 24.452018] ? __wake_up_common+0x433/0x770 [ 24.452026] __warn+0x1dc/0x200 [ 24.452037] ? __wake_up_common+0x433/0x770 [ 24.452051] report_bug+0x211/0x2d0 [ 24.452072] fixup_bug.part.11+0x37/0x80 [ 24.452084] do_error_trap+0x2d7/0x3e0 [ 24.452101] ? math_error+0x400/0x400 [ 24.452114] ? check_noncircular+0x20/0x20 [ 24.452123] ? save_stack_trace+0x1a/0x20 [ 24.452132] ? __lock_acquire+0x324e/0x47f0 [ 24.452149] ? entry_SYSCALL_64_fastpath+0x1f/0x96 [ 24.452165] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 24.452184] do_invalid_op+0x1b/0x20 [ 24.452194] invalid_op+0x22/0x40 [ 24.452203] RIP: 0010:__wake_up_common+0x433/0x770 [ 24.452209] RSP: 0018:ffff8801c52ff648 EFLAGS: 00010246 [ 24.452222] RAX: 0000000000000000 RBX: ffff8801c7b5fe50 RCX: 0000000000000004 [ 24.452228] RDX: 1ffffffff0c59731 RSI: ffff8801c7b5fe68 RDI: 0000000000000282 [ 24.452235] RBP: ffff8801c52ff748 R08: ffff8801c52ff858 R09: 0000000000000000 [ 24.452241] R10: 000000000000000b R11: ffffed0038a5fe48 R12: 0000000000000000 [ 24.452247] R13: ffff8801c7b5fe00 R14: 0000000000000001 R15: ffff8801c52ff858 [ 24.452281] ? __wake_up_common+0x42b/0x770 [ 24.452300] ? do_wait_intr_irq+0x3e0/0x3e0 [ 24.452318] ? __kernel_text_address+0xd/0x40 [ 24.452328] ? check_noncircular+0x20/0x20 [ 24.452355] __wake_up_locked_key+0x16/0x20 [ 24.452367] userfaultfd_release+0x4da/0x750 [ 24.452380] ? free_fs_struct+0x52/0x60 [ 24.452400] ? userfaultfd_event_wait_completion+0xae0/0xae0 [ 24.452413] ? fsnotify+0x7b3/0x1140 [ 24.452439] ? fsnotify_first_mark+0x2b0/0x2b0 [ 24.452457] ? __might_sleep+0x95/0x190 [ 24.452471] ? userfaultfd_event_wait_completion+0xae0/0xae0 [ 24.452483] __fput+0x333/0x7f0 [ 24.452503] ? fput+0x140/0x140 [ 24.452517] ? _raw_spin_unlock_irq+0x27/0x70 [ 24.452537] ____fput+0x15/0x20 [ 24.452547] task_work_run+0x199/0x270 [ 24.452564] ? task_work_cancel+0x210/0x210 [ 24.452576] ? _raw_spin_unlock+0x22/0x30 [ 24.452586] ? switch_task_namespaces+0x87/0xc0 [ 24.452604] do_exit+0x9bb/0x1ae0 [ 24.452617] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.452632] ? mm_update_next_owner+0x930/0x930 [ 24.452640] ? lockdep_init_map+0x3d/0x70 [ 24.452654] ? debug_mutex_init+0x2d/0x60 [ 24.452674] ? find_held_lock+0x39/0x1d0 [ 24.452701] ? lock_downgrade+0x980/0x980 [ 24.452715] ? get_unused_fd_flags+0x190/0x190 [ 24.452743] ? __lock_is_held+0xbc/0x140 [ 24.452775] ? __fd_install+0x288/0x740 [ 24.452783] ? __init_waitqueue_head+0x97/0x140 [ 24.452796] ? get_unused_fd_flags+0x190/0x190 [ 24.452810] ? alloc_file+0x284/0x3a0 [ 24.452818] ? _raw_spin_unlock+0x22/0x30 [ 24.452835] ? anon_inode_getfile+0x349/0x490 [ 24.452849] ? compat_SyS_epoll_pwait+0x4f0/0x4f0 [ 24.452868] ? kmem_cache_alloc+0x469/0x760 [ 24.452880] ? vfs_write+0x22a/0x510 [ 24.452895] do_group_exit+0x149/0x400 [ 24.452909] ? SyS_exit+0x30/0x30 [ 24.452921] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.452933] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 24.452949] SyS_exit_group+0x1d/0x20 [ 24.452961] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 24.452968] RIP: 0033:0x43e848 [ 24.452973] RSP: 002b:00007ffdb2220c38 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 24.452984] RAX: ffffffffffffffda RBX: 00000000006ca800 RCX: 000000000043e848 [ 24.452990] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 24.452996] RBP: 00000000000014b1 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 24.453002] R10: 0000000000000006 R11: 0000000000000246 R12: 00000000006ca858 [ 24.453008] R13: 00000000006ca858 R14: 0000000000000000 R15: 0000000000002710 [ 24.475366] Dumping ftrace buffer: [ 24.475441] (ftrace buffer empty) [ 24.475445] Kernel Offset: disabled [ 24.888333] Rebooting in 86400 seconds..