Warning: Permanently added '10.128.0.29' (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 [ 26.916526] ================================================================== [ 26.923940] BUG: KASAN: use-after-free in disk_unblock_events+0x51/0x60 [ 26.930691] Read of size 8 at addr ffff8801cffd9ee0 by task blkid/2065 [ 26.937349] [ 26.938974] CPU: 0 PID: 2065 Comm: blkid Not tainted 4.9.141+ #1 [ 26.945127] ffff8801ce8276f8 ffffffff81b42e79 ffffea00073ff600 ffff8801cffd9ee0 [ 26.953208] 0000000000000000 ffff8801cffd9ee0 0000000000000000 ffff8801ce827730 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 26.961516] ffffffff815009b8 ffff8801cffd9ee0 0000000000000008 0000000000000000 [ 26.969688] Call Trace: [ 26.972414] [] dump_stack+0xc1/0x128 [ 26.977783] [] print_address_description+0x6c/0x234 [ 26.984455] [] kasan_report.cold.6+0x242/0x2fe [ 26.990732] [] ? disk_unblock_events+0x51/0x60 [ 26.996964] [] __asan_report_load8_noabort+0x14/0x20 [ 27.003729] [] disk_unblock_events+0x51/0x60 [ 27.009788] [] __blkdev_get+0x6b6/0xd60 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.015408] [] ? __blkdev_put+0x840/0x840 [ 27.021206] [] ? fsnotify+0x114/0x1100 [ 27.026747] [] blkdev_get+0x2da/0x920 [ 27.032196] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 27.038953] [] ? bd_may_claim+0xd0/0xd0 [ 27.044572] [] ? bd_acquire+0x27/0x250 [ 27.050104] [] ? bd_acquire+0x88/0x250 [ 27.055913] [] ? _raw_spin_unlock+0x2c/0x50 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.062264] [] blkdev_open+0x1a5/0x250 [ 27.067797] [] do_dentry_open+0x3ef/0xc90 [ 27.073596] [] ? blkdev_get_by_dev+0x70/0x70 [ 27.079741] [] vfs_open+0x11c/0x210 [ 27.085107] [] ? may_open.isra.20+0x14f/0x2a0 [ 27.091260] [] path_openat+0x542/0x2790 [ 27.096889] [] ? path_mountpoint+0x6c0/0x6c0 [ 27.103126] [] ? trace_hardirqs_on+0x10/0x10 [ 27.109190] [] ? expand_files.part.3+0x3a9/0x6d0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.115780] [] do_filp_open+0x197/0x270 [ 27.121392] [] ? may_open_dev+0xe0/0xe0 [ 27.127106] [] ? _raw_spin_unlock+0x2c/0x50 [ 27.133078] [] ? __alloc_fd+0x1d7/0x4a0 [ 27.138710] [] do_sys_open+0x30d/0x5c0 [ 27.144250] [] ? filp_open+0x70/0x70 [ 27.149627] [] ? up_read+0x1a/0x40 [ 27.154913] [] SyS_open+0x2d/0x40 [ 27.160018] [] ? do_sys_open+0x5c0/0x5c0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.165949] [] do_syscall_64+0x19f/0x550 [ 27.172370] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 27.179467] [ 27.181090] Allocated by task 2054: [ 27.184807] save_stack_trace+0x16/0x20 [ 27.188782] kasan_kmalloc.part.1+0x62/0xf0 [ 27.193101] kasan_kmalloc+0xaf/0xc0 [ 27.196809] kmem_cache_alloc_trace+0x117/0x2e0 [ 27.201503] alloc_disk_node+0x54/0x3a0 [ 27.205676] alloc_disk+0x18/0x20 [ 27.209139] loop_add+0x368/0x7a0 [ 27.212594] loop_control_ioctl+0x136/0x300 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.216915] do_vfs_ioctl+0x1ac/0x11a0 [ 27.220892] SyS_ioctl+0x8f/0xc0 [ 27.224348] do_syscall_64+0x19f/0x550 [ 27.228235] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 27.233338] [ 27.234957] Freed by task 2065: [ 27.238227] save_stack_trace+0x16/0x20 [ 27.242200] kasan_slab_free+0xac/0x190 [ 27.246292] kfree+0xfb/0x310 [ 27.249400] disk_release+0x259/0x330 [ 27.253404] device_release+0x7e/0x220 [ 27.257276] kobject_put+0x148/0x250 [ 27.260987] put_disk+0x23/0x30 [ 27.264559] __blkdev_get+0x616/0xd60 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.268356] blkdev_get+0x2da/0x920 [ 27.271982] blkdev_open+0x1a5/0x250 [ 27.275699] do_dentry_open+0x3ef/0xc90 [ 27.279666] vfs_open+0x11c/0x210 [ 27.283105] path_openat+0x542/0x2790 [ 27.286902] do_filp_open+0x197/0x270 [ 27.290779] do_sys_open+0x30d/0x5c0 [ 27.294496] SyS_open+0x2d/0x40 [ 27.297775] do_syscall_64+0x19f/0x550 [ 27.301660] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 27.306744] [ 27.308360] The buggy address belongs to the object at ffff8801cffd9980 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.308360] which belongs to the cache kmalloc-2048 of size 2048 [ 27.321271] The buggy address is located 1376 bytes inside of [ 27.321271] 2048-byte region [ffff8801cffd9980, ffff8801cffda180) [ 27.333388] The buggy address belongs to the page: [ 27.338320] page:ffffea00073ff600 count:1 mapcount:0 mapping: (null) index:0x0 compound_mapcount: 0 [ 27.348834] flags: 0x4000000000004080(slab|head) [ 27.353580] page dumped because: kasan: bad access detected [ 27.359398] [ 27.361041] Memory state around the buggy address: executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.366197] ffff8801cffd9d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.373543] ffff8801cffd9e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.380958] >ffff8801cffd9e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.388315] ^ [ 27.394799] ffff8801cffd9f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.402157] ffff8801cffd9f80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.409509] ================================================================== executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.416857] Disabling lock debugging due to kernel taint [ 27.425164] Kernel panic - not syncing: panic_on_warn set ... [ 27.425164] [ 27.432590] CPU: 0 PID: 2065 Comm: blkid Tainted: G B 4.9.141+ #1 [ 27.440115] ffff8801ce827658 ffffffff81b42e79 ffffffff82e37630 00000000ffffffff [ 27.448390] 0000000000000000 0000000000000000 0000000000000000 ffff8801ce827718 [ 27.456550] ffffffff813f7125 0000000041b58ab3 ffffffff82e2b62b ffffffff813f6f66 [ 27.464901] Call Trace: executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.467485] [] dump_stack+0xc1/0x128 [ 27.472843] [] panic+0x1bf/0x39f [ 27.477859] [] ? add_taint.cold.5+0x16/0x16 [ 27.483919] [] ? ___preempt_schedule+0x16/0x18 [ 27.490155] [] kasan_end_report+0x47/0x4f [ 27.496063] [] kasan_report.cold.6+0x76/0x2fe [ 27.502218] [] ? disk_unblock_events+0x51/0x60 [ 27.508450] [] __asan_report_load8_noabort+0x14/0x20 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.515204] [] disk_unblock_events+0x51/0x60 [ 27.526461] [] __blkdev_get+0x6b6/0xd60 [ 27.532107] [] ? __blkdev_put+0x840/0x840 [ 27.538101] [] ? fsnotify+0x114/0x1100 [ 27.543650] [] blkdev_get+0x2da/0x920 [ 27.549096] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 27.555843] [] ? bd_may_claim+0xd0/0xd0 [ 27.561753] [] ? bd_acquire+0x27/0x250 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.567296] [] ? bd_acquire+0x88/0x250 [ 27.572835] [] ? _raw_spin_unlock+0x2c/0x50 [ 27.578802] [] blkdev_open+0x1a5/0x250 [ 27.584336] [] do_dentry_open+0x3ef/0xc90 [ 27.590137] [] ? blkdev_get_by_dev+0x70/0x70 [ 27.596206] [] vfs_open+0x11c/0x210 [ 27.601483] [] ? may_open.isra.20+0x14f/0x2a0 [ 27.607624] [] path_openat+0x542/0x2790 [ 27.613334] [] ? path_mountpoint+0x6c0/0x6c0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.619478] [] ? trace_hardirqs_on+0x10/0x10 [ 27.625537] [] ? expand_files.part.3+0x3a9/0x6d0 [ 27.631936] [] do_filp_open+0x197/0x270 [ 27.637563] [] ? may_open_dev+0xe0/0xe0 [ 27.643190] [] ? _raw_spin_unlock+0x2c/0x50 [ 27.649159] [] ? __alloc_fd+0x1d7/0x4a0 [ 27.654871] [] do_sys_open+0x30d/0x5c0 [ 27.660402] [] ? filp_open+0x70/0x70 [ 27.666049] [] ? up_read+0x1a/0x40 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 27.671241] [] SyS_open+0x2d/0x40 [ 27.676348] [] ? do_sys_open+0x5c0/0x5c0 [ 27.682236] [] do_syscall_64+0x19f/0x550 [ 27.687944] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 27.696897] Kernel Offset: disabled [ 27.700652] Rebooting in 86400 seconds..