[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [ 10.635616] random: crng init done 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 Warning: Permanently added '10.128.10.38' (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 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 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 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 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 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 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 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 syzkaller login: [ 26.799211] ================================================================== [ 26.802419] BUG: KASAN: use-after-free in disk_unblock_events+0x51/0x60 [ 26.805106] Read of size 8 at addr ffff8801d9fefc60 by task blkid/3956 [ 26.807735] [ 26.808396] CPU: 1 PID: 3956 Comm: blkid Not tainted 4.9.126+ #90 [ 26.810753] ffff8801d04e76f8 ffffffff81af1049 ffffea000767fa00 ffff8801d9fefc60 [ 26.813901] 0000000000000000 ffff8801d9fefc60 0000000000000000 ffff8801d04e7730 [ 26.816999] ffffffff814e136d ffff8801d9fefc60 0000000000000008 0000000000000000 [ 26.821214] Call Trace: [ 26.823844] [] dump_stack+0xc1/0x128 [ 26.829227] [] print_address_description+0x6c/0x234 [ 26.835908] [] kasan_report.cold.6+0x242/0x2fe [ 26.842152] [] ? disk_unblock_events+0x51/0x60 [ 26.848401] [] __asan_report_load8_noabort+0x14/0x20 [ 26.855166] [] disk_unblock_events+0x51/0x60 [ 26.861236] [] __blkdev_get+0x6b6/0xd60 [ 26.866880] [] ? __blkdev_put+0x840/0x840 [ 26.872688] [] ? fsnotify+0x114/0x1100 [ 26.878237] [] blkdev_get+0x2da/0x920 [ 26.883704] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 26.890467] [] ? bd_may_claim+0xd0/0xd0 [ 26.896105] [] ? bd_acquire+0x27/0x250 [ 26.901648] [] ? bd_acquire+0x88/0x250 [ 26.907198] [] ? _raw_spin_unlock+0x2c/0x50 [ 26.913178] [] blkdev_open+0x1a5/0x250 [ 26.918722] [] do_dentry_open+0x3ef/0xc90 [ 26.924533] [] ? blkdev_get_by_dev+0x70/0x70 [ 26.930599] [] vfs_open+0x11c/0x210 [ 26.935891] [] ? may_open.isra.20+0x14f/0x2a0 [ 26.942045] [] path_openat+0x542/0x2790 [ 26.947738] [] ? path_mountpoint+0x6c0/0x6c0 [ 26.953808] [] ? trace_hardirqs_on+0x10/0x10 [ 26.959913] [] ? expand_files.part.3+0x3a9/0x6d0 [ 26.966335] [] do_filp_open+0x197/0x270 [ 26.971971] [] ? may_open_dev+0xe0/0xe0 [ 26.977607] [] ? _raw_spin_unlock+0x2c/0x50 [ 26.983587] [] ? __alloc_fd+0x1d7/0x4a0 [ 26.989224] [] do_sys_open+0x30d/0x5c0 [ 26.994772] [] ? filp_open+0x70/0x70 [ 27.000147] [] ? up_read+0x1a/0x40 [ 27.005357] [] SyS_open+0x2d/0x40 [ 27.010472] [] ? do_sys_open+0x5c0/0x5c0 [ 27.016190] [] do_syscall_64+0x19f/0x480 [ 27.021913] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 27.028867] [ 27.030501] Allocated by task 3943: [ 27.034135] save_stack_trace+0x16/0x20 [ 27.038119] kasan_kmalloc.part.1+0x62/0xf0 [ 27.042449] kasan_kmalloc+0xaf/0xc0 [ 27.046173] kmem_cache_alloc_trace+0x117/0x2e0 [ 27.050873] alloc_disk_node+0x54/0x3a0 [ 27.054874] alloc_disk+0x18/0x20 [ 27.058341] loop_add+0x33b/0x770 [ 27.061804] loop_probe+0x14f/0x180 [ 27.065475] kobj_lookup+0x223/0x410 [ 27.069198] get_gendisk+0x39/0x2d0 [ 27.072867] __blkdev_get+0x351/0xd60 [ 27.076677] blkdev_get+0x488/0x920 [ 27.080315] blkdev_open+0x1a5/0x250 [ 27.084043] do_dentry_open+0x3ef/0xc90 [ 27.088035] vfs_open+0x11c/0x210 [ 27.091501] path_openat+0x542/0x2790 [ 27.095315] do_filp_open+0x197/0x270 [ 27.099134] do_sys_open+0x30d/0x5c0 [ 27.102876] SyS_open+0x2d/0x40 [ 27.106167] do_syscall_64+0x19f/0x480 [ 27.110067] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 27.115168] [ 27.116802] Freed by task 3956: [ 27.120128] save_stack_trace+0x16/0x20 [ 27.124112] kasan_slab_free+0xac/0x190 [ 27.128094] kfree+0xfb/0x310 [ 27.131213] disk_release+0x259/0x330 [ 27.135132] device_release+0x7e/0x220 [ 27.139036] kobject_put+0x148/0x250 [ 27.142760] put_disk+0x23/0x30 [ 27.146048] __blkdev_get+0x616/0xd60 [ 27.149870] blkdev_get+0x2da/0x920 [ 27.153505] blkdev_open+0x1a5/0x250 [ 27.157229] do_dentry_open+0x3ef/0xc90 [ 27.161302] vfs_open+0x11c/0x210 [ 27.164880] path_openat+0x542/0x2790 [ 27.168688] do_filp_open+0x197/0x270 [ 27.172605] do_sys_open+0x30d/0x5c0 [ 27.176334] SyS_open+0x2d/0x40 [ 27.179621] do_syscall_64+0x19f/0x480 [ 27.183517] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 27.188621] [ 27.190259] The buggy address belongs to the object at ffff8801d9fef700 [ 27.190259] which belongs to the cache kmalloc-2048 of size 2048 [ 27.203098] The buggy address is located 1376 bytes inside of [ 27.203098] 2048-byte region [ffff8801d9fef700, ffff8801d9feff00) [ 27.215150] The buggy address belongs to the page: [ 27.220087] page:ffffea000767fa00 count:1 mapcount:0 mapping: (null) index:0x0 compound_mapcount: 0 [ 27.230358] flags: 0x4000000000004080(slab|head) [ 27.235315] page dumped because: kasan: bad access detected [ 27.241034] [ 27.242665] Memory state around the buggy address: [ 27.247603] ffff8801d9fefb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.254974] ffff8801d9fefb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.262347] >ffff8801d9fefc00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.269716] ^ [ 27.276212] ffff8801d9fefc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.283937] ffff8801d9fefd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.291302] ================================================================== 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 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 [ 27.298673] Disabling lock debugging due to kernel taint [ 27.307656] Kernel panic - not syncing: panic_on_warn set ... [ 27.307656] [ 27.315167] CPU: 1 PID: 3956 Comm: blkid Tainted: G B 4.9.126+ #90 [ 27.322625] ffff8801d04e7658 ffffffff81af1049 ffffffff82c346e0 00000000ffffffff [ 27.330804] 0000000000000000 0000000000000001 0000000000000000 ffff8801d04e7718 [ 27.339168] ffffffff813df5e5 0000000041b58ab3 ffffffff82c286e3 ffffffff813df426 [ 27.347305] Call Trace: [ 27.349910] [] dump_stack+0xc1/0x128 [ 27.355286] [] panic+0x1bf/0x39f [ 27.361005] [] ? add_taint.cold.6+0x16/0x16 [ 27.366988] [] ? ___preempt_schedule+0x16/0x18 [ 27.373232] [] kasan_end_report+0x47/0x4f [ 27.379040] [] kasan_report.cold.6+0x76/0x2fe [ 27.385745] [] ? disk_unblock_events+0x51/0x60 [ 27.391997] [] __asan_report_load8_noabort+0x14/0x20 [ 27.398877] [] disk_unblock_events+0x51/0x60 [ 27.404943] [] __blkdev_get+0x6b6/0xd60 [ 27.410576] [] ? __blkdev_put+0x840/0x840 [ 27.416396] [] ? fsnotify+0x114/0x1100 [ 27.421956] [] blkdev_get+0x2da/0x920 [ 27.427412] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 27.434188] [] ? bd_may_claim+0xd0/0xd0 [ 27.439850] [] ? bd_acquire+0x27/0x250 [ 27.445400] [] ? bd_acquire+0x88/0x250 [ 27.450946] [] ? _raw_spin_unlock+0x2c/0x50 [ 27.456931] [] blkdev_open+0x1a5/0x250 [ 27.462480] [] do_dentry_open+0x3ef/0xc90 [ 27.468285] [] ? blkdev_get_by_dev+0x70/0x70 [ 27.474362] [] vfs_open+0x11c/0x210 [ 27.479649] [] ? may_open.isra.20+0x14f/0x2a0 [ 27.485802] [] path_openat+0x542/0x2790 [ 27.491472] [] ? path_mountpoint+0x6c0/0x6c0 [ 27.497545] [] ? trace_hardirqs_on+0x10/0x10 [ 27.503611] [] ? expand_files.part.3+0x3a9/0x6d0 [ 27.510032] [] do_filp_open+0x197/0x270 [ 27.515671] [] ? may_open_dev+0xe0/0xe0 [ 27.521308] [] ? _raw_spin_unlock+0x2c/0x50 [ 27.527314] [] ? __alloc_fd+0x1d7/0x4a0 [ 27.532957] [] do_sys_open+0x30d/0x5c0 [ 27.538509] [] ? filp_open+0x70/0x70 [ 27.543886] [] ? up_read+0x1a/0x40 [ 27.549085] [] SyS_open+0x2d/0x40 [ 27.554202] [] ? do_sys_open+0x5c0/0x5c0 [ 27.560038] [] do_syscall_64+0x19f/0x480 [ 27.565880] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 27.573154] Dumping ftrace buffer: [ 27.576755] (ftrace buffer empty) [ 27.580454] Kernel Offset: disabled [ 27.584069] Rebooting in 86400 seconds..