====================================================== WARNING: possible circular locking dependency detected 4.20.0+ #291 Not tainted ------------------------------------------------------ syz-executor4/16601 is trying to acquire lock: 00000000763ec2fd (&bdev->bd_mutex){+.+.}, at: blkdev_reread_part+0x1e/0x40 block/ioctl.c:192 but task is already holding lock: 000000004a09cd45 (&lo->lo_ctl_mutex#2){+.+.}, at: lo_compat_ioctl+0x11b/0x170 drivers/block/loop.c:1591 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&lo->lo_ctl_mutex#2){+.+.}: __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0x166/0x1700 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 __lo_release drivers/block/loop.c:1650 [inline] lo_release+0xa3/0x1f0 drivers/block/loop.c:1674 __blkdev_put+0x4f6/0x830 fs/block_dev.c:1796 blkdev_put+0x98/0x540 fs/block_dev.c:1858 blkdev_close+0x8b/0xb0 fs/block_dev.c:1865 __fput+0x385/0xa30 fs/file_table.c:278 ____fput+0x15/0x20 fs/file_table.c:309 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #1 (loop_index_mutex){+.+.}: __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0x166/0x1700 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 lo_open+0x1b/0xb0 drivers/block/loop.c:1630 __blkdev_get+0x360/0x13c0 fs/block_dev.c:1482 blkdev_get+0xc1/0xb50 fs/block_dev.c:1617 blkdev_open+0x1fb/0x280 fs/block_dev.c:1775 do_dentry_open+0x499/0x1250 fs/open.c:771 vfs_open+0xa0/0xd0 fs/open.c:880 do_last fs/namei.c:3418 [inline] path_openat+0x12bc/0x5160 fs/namei.c:3534 do_filp_open+0x255/0x380 fs/namei.c:3564 do_sys_open+0x568/0x700 fs/open.c:1063 __do_sys_open fs/open.c:1081 [inline] __se_sys_open fs/open.c:1076 [inline] __x64_sys_open+0x7e/0xc0 fs/open.c:1076 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&bdev->bd_mutex){+.+.}: kobject: 'loop3' (000000009124ca9c): kobject_uevent_env lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844 __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0x166/0x1700 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 blkdev_reread_part+0x1e/0x40 block/ioctl.c:192 kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' loop_reread_partitions+0x163/0x190 drivers/block/loop.c:644 loop_set_status+0xb95/0x1010 drivers/block/loop.c:1198 loop_set_status_compat+0xa4/0xf0 drivers/block/loop.c:1563 lo_compat_ioctl+0x13a/0x170 drivers/block/loop.c:1593 compat_blkdev_ioctl+0x3ca/0x1b30 block/compat_ioctl.c:406 __do_compat_sys_ioctl fs/compat_ioctl.c:1052 [inline] __se_compat_sys_ioctl fs/compat_ioctl.c:998 [inline] __ia32_compat_sys_ioctl+0x20e/0x630 fs/compat_ioctl.c:998 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 other info that might help us debug this: Chain exists of: &bdev->bd_mutex --> loop_index_mutex --> &lo->lo_ctl_mutex#2 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&lo->lo_ctl_mutex#2); lock(loop_index_mutex); lock(&lo->lo_ctl_mutex#2); lock(&bdev->bd_mutex); *** DEADLOCK *** kobject: 'loop0' (000000002af46aff): kobject_uevent_env 1 lock held by syz-executor4/16601: #0: 000000004a09cd45 (&lo->lo_ctl_mutex#2){+.+.}, at: lo_compat_ioctl+0x11b/0x170 drivers/block/loop.c:1591 stack backtrace: CPU: 1 PID: 16601 Comm: syz-executor4 Not tainted 4.20.0+ #291 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kobject: 'loop0' (000000002af46aff): fill_kobj_path: path = '/devices/virtual/block/loop0' Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1d3/0x2c6 lib/dump_stack.c:113 print_circular_bug.isra.33.cold.54+0x1bd/0x27d kernel/locking/lockdep.c:1221 check_prev_add kernel/locking/lockdep.c:1863 [inline] check_prevs_add kernel/locking/lockdep.c:1976 [inline] validate_chain kernel/locking/lockdep.c:2347 [inline] __lock_acquire+0x3360/0x4c20 kernel/locking/lockdep.c:3341 lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844 __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0x166/0x1700 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 blkdev_reread_part+0x1e/0x40 block/ioctl.c:192 loop_reread_partitions+0x163/0x190 drivers/block/loop.c:644 loop_set_status+0xb95/0x1010 drivers/block/loop.c:1198 loop_set_status_compat+0xa4/0xf0 drivers/block/loop.c:1563 lo_compat_ioctl+0x13a/0x170 drivers/block/loop.c:1593 compat_blkdev_ioctl+0x3ca/0x1b30 block/compat_ioctl.c:406 __do_compat_sys_ioctl fs/compat_ioctl.c:1052 [inline] __se_compat_sys_ioctl fs/compat_ioctl.c:998 [inline] __ia32_compat_sys_ioctl+0x20e/0x630 fs/compat_ioctl.c:998 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7f98a49 Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f5f940cc EFLAGS: 00000296 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000004c02 RDX: 0000000020000140 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 loop_reread_partitions: partition scan of loop5 (ZăMyAˇ+ş!) failed (rc=-13) kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop1' (00000000ba2be676): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000ba2be676): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (00000000b376a030): kobject_uevent_env kobject: 'loop2' (00000000b376a030): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000002af46aff): kobject_uevent_env kobject: 'loop0' (000000002af46aff): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000ba2be676): kobject_uevent_env kobject: 'loop1' (00000000ba2be676): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop2' (00000000b376a030): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' print_req_error: 54 callbacks suppressed print_req_error: I/O error, dev loop3, sector 72 kobject: 'loop2' (00000000b376a030): fill_kobj_path: path = '/devices/virtual/block/loop2' print_req_error: I/O error, dev loop3, sector 72 buffer_io_error: 52 callbacks suppressed Buffer I/O error on dev loop3, logical block 18, async page read print_req_error: I/O error, dev loop3, sector 76 Buffer I/O error on dev loop3, logical block 19, async page read kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000002af46aff): kobject_uevent_env kobject: 'loop0' (000000002af46aff): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (00000000ba2be676): kobject_uevent_env kobject: 'loop1' (00000000ba2be676): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000b376a030): kobject_uevent_env kobject: 'loop2' (00000000b376a030): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (000000002af46aff): kobject_uevent_env kobject: 'loop0' (000000002af46aff): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (00000000ba2be676): kobject_uevent_env kobject: 'loop1' (00000000ba2be676): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000002af46aff): kobject_uevent_env kobject: 'loop0' (000000002af46aff): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop2' (00000000b376a030): kobject_uevent_env kobject: 'loop2' (00000000b376a030): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000002af46aff): kobject_uevent_env kobject: 'loop0' (000000002af46aff): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000ba2be676): kobject_uevent_env kobject: 'loop1' (00000000ba2be676): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000b376a030): kobject_uevent_env kobject: 'loop2' (00000000b376a030): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000ba2be676): kobject_uevent_env kobject: 'loop1' (00000000ba2be676): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000002af46aff): kobject_uevent_env kobject: 'loop0' (000000002af46aff): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000b376a030): kobject_uevent_env kobject: 'loop2' (00000000b376a030): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000002af46aff): kobject_uevent_env kobject: 'loop0' (000000002af46aff): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000ba2be676): kobject_uevent_env kobject: 'loop1' (00000000ba2be676): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000b376a030): kobject_uevent_env kobject: 'loop2' (00000000b376a030): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000002af46aff): kobject_uevent_env kobject: 'loop0' (000000002af46aff): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (00000000ba2be676): kobject_uevent_env kobject: 'loop1' (00000000ba2be676): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000b376a030): kobject_uevent_env kobject: 'loop2' (00000000b376a030): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (000000002af46aff): kobject_uevent_env kobject: 'loop0' (000000002af46aff): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000ba2be676): kobject_uevent_env kobject: 'loop1' (00000000ba2be676): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000b376a030): kobject_uevent_env kobject: 'loop2' (00000000b376a030): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (00000000ba2be676): kobject_uevent_env kobject: 'loop1' (00000000ba2be676): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (000000002af46aff): kobject_uevent_env kobject: 'loop0' (000000002af46aff): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000b376a030): kobject_uevent_env kobject: 'loop2' (00000000b376a030): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (0000000062742239): kobject_uevent_env kobject: 'loop4' (0000000062742239): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop3' (000000009124ca9c): kobject_uevent_env kobject: 'loop3' (000000009124ca9c): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (000000002f2cfc6d): kobject_uevent_env kobject: 'loop5' (000000002f2cfc6d): fill_kobj_path: path = '/devices/virtual/block/loop5'