INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-upstream-next-kasan-gce-8,10.128.15.219' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 25.109761] FAULT_INJECTION: forcing a failure. [ 25.109761] name failslab, interval 1, probability 0, space 0, times 1 [ 25.111390] CPU: 0 PID: 3043 Comm: syzkaller384967 Not tainted 4.14.0-rc8-next-20171109+ #39 [ 25.112523] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.113864] Call Trace: [ 25.114225] dump_stack+0x194/0x257 [ 25.114721] ? arch_local_irq_restore+0x53/0x53 [ 25.115359] ? rcutorture_record_progress+0x10/0x10 [ 25.116036] should_fail+0x8c0/0xa40 [ 25.116541] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 25.117237] ? unwind_get_return_address+0x61/0xa0 [ 25.117896] ? __save_stack_trace+0x7e/0xd0 [ 25.118481] ? find_held_lock+0x39/0x1d0 [ 25.119035] ? lock_downgrade+0x990/0x990 [ 25.119620] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 25.120409] ? rcu_note_context_switch+0x710/0x710 [ 25.121075] should_failslab+0xec/0x120 [ 25.121684] kmem_cache_alloc_trace+0x4b/0x750 [ 25.122295] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 25.123088] ? sget_userns+0x157/0xe20 [ 25.123610] ? rcu_pm_notify+0xc0/0xc0 [ 25.124144] selinux_sb_alloc_security+0x93/0x2e0 [ 25.124790] ? selinux_inode_alloc_security+0x390/0x390 [ 25.125503] ? rcu_read_lock_sched_held+0x108/0x120 [ 25.126170] ? kmem_cache_alloc_trace+0x459/0x750 [ 25.126833] security_sb_alloc+0x6d/0xa0 [ 25.127415] sget_userns+0x361/0xe20 [ 25.127916] ? get_anon_bdev+0x2a0/0x2a0 [ 25.128472] ? destroy_unused_super.part.7+0xd0/0xd0 [ 25.129151] ? cred_has_capability+0x1a0/0x3d0 [ 25.129764] ? selinux_ipv4_output+0x40/0x40 [ 25.130356] ? free_pages+0x51/0x90 [ 25.133952] ? selinux_sb_copy_data+0x493/0x610 [ 25.138598] ? selinux_capable+0x36/0x40 [ 25.142630] ? security_capable+0x8e/0xc0 [ 25.146746] ? get_anon_bdev+0x2a0/0x2a0 [ 25.150773] ? ns_capable_common+0xcf/0x160 [ 25.155064] ? get_anon_bdev+0x2a0/0x2a0 [ 25.159090] sget+0xd2/0x120 [ 25.162075] ? __get_fs_type+0x22/0xc0 [ 25.165930] ? devpts_ptmx_path+0x1c0/0x1c0 [ 25.170218] mount_nodev+0x37/0x100 [ 25.173819] devpts_mount+0x2c/0x40 [ 25.177414] mount_fs+0x66/0x2d0 [ 25.180754] vfs_kern_mount.part.26+0xc6/0x4a0 [ 25.185306] ? may_umount+0xa0/0xa0 [ 25.188907] ? _raw_read_unlock+0x22/0x30 [ 25.193022] ? __get_fs_type+0x8a/0xc0 [ 25.196886] do_mount+0xea1/0x2bb0 [ 25.200402] ? copy_mount_string+0x40/0x40 [ 25.204612] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.209603] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 25.214333] ? retint_kernel+0x10/0x10 [ 25.218196] ? copy_mount_options+0x18b/0x2e0 [ 25.222668] ? copy_mount_options+0x190/0x2e0 [ 25.227131] ? copy_mount_options+0x1f4/0x2e0 [ 25.231598] SyS_mount+0xab/0x120 [ 25.235021] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 25.239743] RIP: 0033:0x440439 [ 25.242900] RSP: 002b:00007ffdf34ca458 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 25.250575] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440439 [ 25.257845] RDX: 0000000020e3b000 RSI: 000000002059e000 RDI: 0000000020ae0ff4 [ 25.265085] RBP: 0000000000000086 R08: 0000000020000000 R09: 65732f636f003031 [ 25.272322] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401d60 [ 25.279565] R13: 0000000000401df0 R14: 0000000000000000 R15: 0000000000000000 [ 25.287151] DEBUG_LOCKS_WARN_ON(depth <= 0) [ 25.287185] ------------[ cut here ]------------ [ 25.296205] WARNING: CPU: 0 PID: 3043 at kernel/locking/lockdep.c:3766 lock_release+0x5de/0xd90 [ 25.305007] Kernel panic - not syncing: panic_on_warn set ... [ 25.305007] [ 25.312335] CPU: 0 PID: 3043 Comm: syzkaller384967 Not tainted 4.14.0-rc8-next-20171109+ #39 [ 25.320872] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.330189] Call Trace: [ 25.332746] dump_stack+0x194/0x257 [ 25.336341] ? arch_local_irq_restore+0x53/0x53 [ 25.340975] ? vsnprintf+0x1ed/0x1900 [ 25.344740] panic+0x1e4/0x41c [ 25.347900] ? refcount_error_report+0x214/0x214 [ 25.352622] ? show_regs_print_info+0x65/0x65 [ 25.357086] ? __warn+0x1a9/0x1e0 [ 25.360507] ? lock_release+0x5de/0xd90 [ 25.364447] __warn+0x1c4/0x1e0 [ 25.367692] ? lock_release+0x5de/0xd90 [ 25.371633] report_bug+0x211/0x2d0 [ 25.375224] fixup_bug+0x40/0x90 [ 25.378557] do_trap+0x260/0x390 [ 25.381888] do_error_trap+0x120/0x390 [ 25.385738] ? do_trap+0x390/0x390 [ 25.389242] ? lock_release+0x5de/0xd90 [ 25.393178] ? vprintk_emit+0x3ea/0x590 [ 25.397124] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.401941] do_invalid_op+0x1b/0x20 [ 25.405622] invalid_op+0x18/0x20 [ 25.409040] RIP: 0010:lock_release+0x5de/0xd90 [ 25.413581] RSP: 0018:ffff8801ccfe7740 EFLAGS: 00010082 [ 25.418907] RAX: 000000000000001f RBX: 1ffff100399fceed RCX: 0000000000000000 [ 25.426141] RDX: 000000000000001f RSI: 1ffff100399fcea8 RDI: ffffed00399fcedc [ 25.433375] RBP: ffff8801ccfe78b0 R08: 0000000000000001 R09: 0000000000000000 [ 25.440608] R10: ffff8801cceac580 R11: fffffbfff0e8546b R12: ffff8801ccfe7788 [ 25.447841] R13: ffff8801ccfe7888 R14: ffff8801cc018b98 R15: ffffffff8746ad60 [ 25.455083] ? destroy_unused_super.part.7+0x18/0xd0 [ 25.460149] ? lock_downgrade+0x990/0x990 [ 25.464267] ? selinux_sb_alloc_security+0x93/0x2e0 [ 25.469249] ? rcu_read_lock_sched_held+0x108/0x120 [ 25.474229] ? kmem_cache_alloc_trace+0x459/0x750 [ 25.479034] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 25.484883] ? sget_userns+0x157/0xe20 [ 25.488736] up_write+0x6b/0x120 [ 25.492065] ? up_read+0x40/0x40 [ 25.495395] ? kmem_cache_alloc_trace+0x459/0x750 [ 25.500205] destroy_unused_super.part.7+0x18/0xd0 [ 25.505098] sget_userns+0x905/0xe20 [ 25.508772] ? get_anon_bdev+0x2a0/0x2a0 [ 25.512799] ? destroy_unused_super.part.7+0xd0/0xd0 [ 25.517865] ? cred_has_capability+0x1a0/0x3d0 [ 25.522410] ? selinux_ipv4_output+0x40/0x40 [ 25.526782] ? free_pages+0x51/0x90 [ 25.530371] ? selinux_sb_copy_data+0x493/0x610 [ 25.535002] ? selinux_capable+0x36/0x40 [ 25.539028] ? security_capable+0x8e/0xc0 [ 25.543136] ? get_anon_bdev+0x2a0/0x2a0 [ 25.547160] ? ns_capable_common+0xcf/0x160 [ 25.551443] ? get_anon_bdev+0x2a0/0x2a0 [ 25.555466] sget+0xd2/0x120 [ 25.558449] ? __get_fs_type+0x22/0xc0 [ 25.562301] ? devpts_ptmx_path+0x1c0/0x1c0 [ 25.566585] mount_nodev+0x37/0x100 [ 25.570176] devpts_mount+0x2c/0x40 [ 25.573769] mount_fs+0x66/0x2d0 [ 25.577099] vfs_kern_mount.part.26+0xc6/0x4a0 [ 25.581644] ? may_umount+0xa0/0xa0 [ 25.585246] ? _raw_read_unlock+0x22/0x30 [ 25.589358] ? __get_fs_type+0x8a/0xc0 [ 25.593210] do_mount+0xea1/0x2bb0 [ 25.596714] ? copy_mount_string+0x40/0x40 [ 25.600912] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.605891] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 25.610612] ? retint_kernel+0x10/0x10 [ 25.614463] ? copy_mount_options+0x18b/0x2e0 [ 25.618922] ? copy_mount_options+0x190/0x2e0 [ 25.623379] ? copy_mount_options+0x1f4/0x2e0 [ 25.627837] SyS_mount+0xab/0x120 [ 25.631254] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 25.635973] RIP: 0033:0x440439 [ 25.639132] RSP: 002b:00007ffdf34ca458 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 25.646810] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440439 [ 25.654045] RDX: 0000000020e3b000 RSI: 000000002059e000 RDI: 0000000020ae0ff4 [ 25.661279] RBP: 0000000000000086 R08: 0000000020000000 R09: 65732f636f003031 [ 25.668513] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401d60 [ 25.675745] R13: 0000000000401df0 R14: 0000000000000000 R15: 0000000000000000 [ 25.683360] Dumping ftrace buffer: [ 25.686866] (ftrace buffer empty) [ 25.690543] Kernel Offset: disabled [ 25.694136] Rebooting in 86400 seconds..