kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env ====================================================== WARNING: possible circular locking dependency detected 4.20.0-rc7+ #163 Not tainted ------------------------------------------------------ kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' syz-executor4/17005 is trying to acquire lock: 000000009acdd686 (&ovl_i_mutex_dir_key[depth]#2){++++}, at: inode_lock_shared include/linux/fs.h:767 [inline] 000000009acdd686 (&ovl_i_mutex_dir_key[depth]#2){++++}, at: lookup_slow+0x49/0x80 fs/namei.c:1687 but task is already holding lock: 00000000f82b3f50 (&sig->cred_guard_mutex){+.+.}, at: __do_sys_perf_event_open+0x12fe/0x2f30 kernel/events/core.c:10511 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&sig->cred_guard_mutex){+.+.}: __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0x166/0x1700 kernel/locking/mutex.c:1072 mutex_lock_killable_nested+0x16/0x20 kernel/locking/mutex.c:1102 lock_trace+0x4c/0xe0 fs/proc/base.c:384 proc_pid_stack+0x1f1/0x430 fs/proc/base.c:434 proc_single_show+0x101/0x190 fs/proc/base.c:737 seq_read+0x4af/0x1150 fs/seq_file.c:229 do_loop_readv_writev fs/read_write.c:700 [inline] do_iter_read+0x4a3/0x650 fs/read_write.c:924 vfs_readv+0x175/0x1c0 fs/read_write.c:986 do_preadv+0x1cc/0x280 fs/read_write.c:1070 __do_sys_preadv fs/read_write.c:1120 [inline] __se_sys_preadv fs/read_write.c:1115 [inline] __x64_sys_preadv+0x9a/0xf0 fs/read_write.c:1115 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #2 (&p->lock){+.+.}: __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 seq_read+0x71/0x1150 fs/seq_file.c:161 proc_reg_read+0x2a3/0x3d0 fs/proc/inode.c:231 do_loop_readv_writev fs/read_write.c:700 [inline] do_iter_read+0x4a3/0x650 fs/read_write.c:924 vfs_readv+0x175/0x1c0 fs/read_write.c:986 kernel_readv fs/splice.c:362 [inline] default_file_splice_read+0x539/0xb20 fs/splice.c:417 do_splice_to+0x12e/0x190 fs/splice.c:880 splice_direct_to_actor+0x31c/0x9d0 fs/splice.c:957 do_splice_direct+0x2d4/0x420 fs/splice.c:1066 do_sendfile+0x62a/0xe20 fs/read_write.c:1439 __do_sys_sendfile64 fs/read_write.c:1500 [inline] __se_sys_sendfile64 fs/read_write.c:1486 [inline] __x64_sys_sendfile64+0x1fd/0x250 fs/read_write.c:1486 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #1 (sb_writers#4){.+.+}: percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline] percpu_down_read include/linux/percpu-rwsem.h:59 [inline] __sb_start_write+0x214/0x370 fs/super.c:1387 sb_start_write include/linux/fs.h:1597 [inline] mnt_want_write+0x3f/0xc0 fs/namespace.c:360 ovl_want_write+0x76/0xa0 fs/overlayfs/util.c:24 ovl_rename+0x272/0x1a20 fs/overlayfs/dir.c:1079 vfs_rename+0x7fc/0x1a90 fs/namei.c:4477 do_renameat2+0xea5/0x1180 fs/namei.c:4627 __do_sys_renameat fs/namei.c:4668 [inline] __se_sys_renameat fs/namei.c:4665 [inline] __x64_sys_renameat+0x9a/0x100 fs/namei.c:4665 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&ovl_i_mutex_dir_key[depth]#2){++++}: lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844 down_read+0x8d/0x120 kernel/locking/rwsem.c:24 inode_lock_shared include/linux/fs.h:767 [inline] lookup_slow+0x49/0x80 fs/namei.c:1687 walk_component+0x92b/0x25b0 fs/namei.c:1810 lookup_last fs/namei.c:2273 [inline] path_lookupat.isra.43+0x212/0xc00 fs/namei.c:2318 filename_lookup+0x26a/0x520 fs/namei.c:2348 kern_path+0x33/0x40 fs/namei.c:2434 create_local_trace_uprobe+0x9b/0x620 kernel/trace/trace_uprobe.c:1377 perf_uprobe_init+0x18c/0x280 kernel/trace/trace_event_perf.c:316 perf_uprobe_event_init+0x106/0x1a0 kernel/events/core.c:8503 perf_try_init_event+0x137/0x2f0 kernel/events/core.c:9770 perf_init_event kernel/events/core.c:9801 [inline] perf_event_alloc.part.94+0x1c91/0x3590 kernel/events/core.c:10074 perf_event_alloc kernel/events/core.c:10430 [inline] __do_sys_perf_event_open+0xa9c/0x2f30 kernel/events/core.c:10531 __se_sys_perf_event_open kernel/events/core.c:10420 [inline] __x64_sys_perf_event_open+0xbe/0x150 kernel/events/core.c:10420 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Chain exists of: &ovl_i_mutex_dir_key[depth]#2 --> &p->lock --> &sig->cred_guard_mutex Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&sig->cred_guard_mutex); lock(&p->lock); lock(&sig->cred_guard_mutex); lock(&ovl_i_mutex_dir_key[depth]#2); *** DEADLOCK *** 2 locks held by syz-executor4/17005: #0: 00000000f82b3f50 (&sig->cred_guard_mutex){+.+.}, at: __do_sys_perf_event_open+0x12fe/0x2f30 kernel/events/core.c:10511 #1: 000000007a736607 (&pmus_srcu){....}, at: perf_event_alloc.part.94+0x16c0/0x3590 kernel/events/core.c:10070 stack backtrace: CPU: 0 PID: 17005 Comm: syz-executor4 Not tainted 4.20.0-rc7+ #163 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 down_read+0x8d/0x120 kernel/locking/rwsem.c:24 inode_lock_shared include/linux/fs.h:767 [inline] lookup_slow+0x49/0x80 fs/namei.c:1687 walk_component+0x92b/0x25b0 fs/namei.c:1810 lookup_last fs/namei.c:2273 [inline] path_lookupat.isra.43+0x212/0xc00 fs/namei.c:2318 filename_lookup+0x26a/0x520 fs/namei.c:2348 kern_path+0x33/0x40 fs/namei.c:2434 create_local_trace_uprobe+0x9b/0x620 kernel/trace/trace_uprobe.c:1377 perf_uprobe_init+0x18c/0x280 kernel/trace/trace_event_perf.c:316 perf_uprobe_event_init+0x106/0x1a0 kernel/events/core.c:8503 perf_try_init_event+0x137/0x2f0 kernel/events/core.c:9770 perf_init_event kernel/events/core.c:9801 [inline] perf_event_alloc.part.94+0x1c91/0x3590 kernel/events/core.c:10074 perf_event_alloc kernel/events/core.c:10430 [inline] __do_sys_perf_event_open+0xa9c/0x2f30 kernel/events/core.c:10531 __se_sys_perf_event_open kernel/events/core.c:10420 [inline] __x64_sys_perf_event_open+0xbe/0x150 kernel/events/core.c:10420 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457669 Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f330690dc78 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000457669 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 00007f330690e6d4 R13: 00000000004c3550 R14: 00000000004d5e20 R15: 00000000ffffffff kobject: 'loop0' (0000000030b1264e): kobject_uevent_env kobject: 'loop0' (0000000030b1264e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (000000000c1d0b2d): kobject_uevent_env overlayfs: './file0' not a directory kobject: 'loop1' (000000000c1d0b2d): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (0000000030b1264e): kobject_uevent_env kobject: 'loop0' (0000000030b1264e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000cc6bf7c4): kobject_uevent_env kobject: 'loop3' (00000000cc6bf7c4): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000008c895d3a): kobject_uevent_env kobject: 'loop5' (000000008c895d3a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (000000000c1d0b2d): kobject_uevent_env kobject: 'loop1' (000000000c1d0b2d): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop1' (000000000c1d0b2d): kobject_uevent_env kobject: 'loop1' (000000000c1d0b2d): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (000000008a57d457): kobject_uevent_env kobject: 'loop4' (000000008a57d457): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (000000000c1d0b2d): kobject_uevent_env kobject: 'loop1' (000000000c1d0b2d): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (0000000030b1264e): kobject_uevent_env kobject: 'loop0' (0000000030b1264e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000cc6bf7c4): kobject_uevent_env kobject: 'loop3' (00000000cc6bf7c4): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (0000000030b1264e): kobject_uevent_env kobject: 'loop0' (0000000030b1264e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (000000008c895d3a): kobject_uevent_env kobject: 'loop5' (000000008c895d3a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000cc6bf7c4): kobject_uevent_env kobject: 'loop3' (00000000cc6bf7c4): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (0000000030b1264e): kobject_uevent_env kobject: 'loop0' (0000000030b1264e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000008a57d457): kobject_uevent_env kobject: 'loop4' (000000008a57d457): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000cc6bf7c4): kobject_uevent_env kobject: 'loop3' (00000000cc6bf7c4): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000008c895d3a): kobject_uevent_env kobject: 'loop5' (000000008c895d3a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (000000008a57d457): kobject_uevent_env kobject: 'loop4' (000000008a57d457): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000008c895d3a): kobject_uevent_env kobject: 'loop5' (000000008c895d3a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (0000000030b1264e): kobject_uevent_env kobject: 'loop0' (0000000030b1264e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (000000000c1d0b2d): kobject_uevent_env kobject: 'loop1' (000000000c1d0b2d): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000cc6bf7c4): kobject_uevent_env kobject: 'loop3' (00000000cc6bf7c4): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000008c895d3a): kobject_uevent_env kobject: 'loop5' (000000008c895d3a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000008a57d457): kobject_uevent_env kobject: 'loop4' (000000008a57d457): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (0000000030b1264e): kobject_uevent_env kobject: 'loop0' (0000000030b1264e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (000000000c1d0b2d): kobject_uevent_env kobject: 'loop1' (000000000c1d0b2d): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000cc6bf7c4): kobject_uevent_env kobject: 'loop3' (00000000cc6bf7c4): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000008c895d3a): kobject_uevent_env kobject: 'loop5' (000000008c895d3a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000008a57d457): kobject_uevent_env kobject: 'loop4' (000000008a57d457): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (0000000030b1264e): kobject_uevent_env kobject: 'loop0' (0000000030b1264e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (000000000c1d0b2d): kobject_uevent_env kobject: 'loop1' (000000000c1d0b2d): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (000000008c895d3a): kobject_uevent_env kobject: 'loop5' (000000008c895d3a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000008a57d457): kobject_uevent_env kobject: 'loop4' (000000008a57d457): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000cc6bf7c4): kobject_uevent_env kobject: 'loop3' (00000000cc6bf7c4): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (0000000030b1264e): kobject_uevent_env kobject: 'loop0' (0000000030b1264e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (000000008c895d3a): kobject_uevent_env kobject: 'loop5' (000000008c895d3a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000cc6bf7c4): kobject_uevent_env kobject: 'loop3' (00000000cc6bf7c4): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (000000008a57d457): kobject_uevent_env kobject: 'loop4' (000000008a57d457): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000008c895d3a): kobject_uevent_env kobject: 'loop5' (000000008c895d3a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (000000000c1d0b2d): kobject_uevent_env kobject: 'loop1' (000000000c1d0b2d): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000cc6bf7c4): kobject_uevent_env kobject: 'loop3' (00000000cc6bf7c4): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (000000008a57d457): kobject_uevent_env kobject: 'loop4' (000000008a57d457): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (0000000030b1264e): kobject_uevent_env kobject: 'loop0' (0000000030b1264e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000cc6bf7c4): kobject_uevent_env kobject: 'loop3' (00000000cc6bf7c4): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (000000008c895d3a): kobject_uevent_env kobject: 'loop5' (000000008c895d3a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000008a57d457): kobject_uevent_env kobject: 'loop4' (000000008a57d457): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000008c895d3a): kobject_uevent_env kobject: 'loop5' (000000008c895d3a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (000000008c895d3a): kobject_uevent_env kobject: 'loop5' (000000008c895d3a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000008a57d457): kobject_uevent_env kobject: 'loop4' (000000008a57d457): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (000000000c1d0b2d): kobject_uevent_env kobject: 'loop1' (000000000c1d0b2d): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop1' (000000000c1d0b2d): kobject_uevent_env kobject: 'loop1' (000000000c1d0b2d): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (0000000030b1264e): kobject_uevent_env kobject: 'loop0' (0000000030b1264e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (000000008c895d3a): kobject_uevent_env kobject: 'loop5' (000000008c895d3a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (000000008a57d457): kobject_uevent_env kobject: 'loop4' (000000008a57d457): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000008c895d3a): kobject_uevent_env kobject: 'loop5' (000000008c895d3a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000cc6bf7c4): kobject_uevent_env kobject: 'loop3' (00000000cc6bf7c4): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (000000008a57d457): kobject_uevent_env kobject: 'loop4' (000000008a57d457): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (0000000030b1264e): kobject_uevent_env kobject: 'loop0' (0000000030b1264e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (000000000c1d0b2d): kobject_uevent_env kobject: 'loop1' (000000000c1d0b2d): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000cc6bf7c4): kobject_uevent_env kobject: 'loop3' (00000000cc6bf7c4): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (000000008a57d457): kobject_uevent_env kobject: 'loop4' (000000008a57d457): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000cc6bf7c4): kobject_uevent_env kobject: 'loop3' (00000000cc6bf7c4): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (000000008a57d457): kobject_uevent_env kobject: 'loop4' (000000008a57d457): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (0000000030b1264e): kobject_uevent_env kobject: 'loop0' (0000000030b1264e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000cc6bf7c4): kobject_uevent_env kobject: 'loop3' (00000000cc6bf7c4): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000008c895d3a): kobject_uevent_env kobject: 'loop5' (000000008c895d3a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (000000000c1d0b2d): kobject_uevent_env kobject: 'loop1' (000000000c1d0b2d): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop4' (000000008a57d457): kobject_uevent_env kobject: 'loop4' (000000008a57d457): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000cc6bf7c4): kobject_uevent_env kobject: 'loop3' (00000000cc6bf7c4): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (0000000030b1264e): kobject_uevent_env kobject: 'loop0' (0000000030b1264e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000008a57d457): kobject_uevent_env kobject: 'loop4' (000000008a57d457): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (000000000c1d0b2d): kobject_uevent_env kobject: 'loop1' (000000000c1d0b2d): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (000000008c895d3a): kobject_uevent_env kobject: 'loop5' (000000008c895d3a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000008a57d457): kobject_uevent_env kobject: 'loop4' (000000008a57d457): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (0000000030b1264e): kobject_uevent_env kobject: 'loop0' (0000000030b1264e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (000000000c1d0b2d): kobject_uevent_env kobject: 'loop1' (000000000c1d0b2d): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000cc6bf7c4): kobject_uevent_env kobject: 'loop3' (00000000cc6bf7c4): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (000000008c895d3a): kobject_uevent_env kobject: 'loop5' (000000008c895d3a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (0000000030b1264e): kobject_uevent_env kobject: 'loop0' (0000000030b1264e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (000000000c1d0b2d): kobject_uevent_env kobject: 'loop1' (000000000c1d0b2d): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000cc6bf7c4): kobject_uevent_env kobject: 'loop3' (00000000cc6bf7c4): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (000000008c895d3a): kobject_uevent_env kobject: 'loop5' (000000008c895d3a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (000000000c1d0b2d): kobject_uevent_env kobject: 'loop1' (000000000c1d0b2d): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (0000000030b1264e): kobject_uevent_env kobject: 'loop0' (0000000030b1264e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (000000008c895d3a): kobject_uevent_env kobject: 'loop5' (000000008c895d3a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (000000000c1d0b2d): kobject_uevent_env kobject: 'loop1' (000000000c1d0b2d): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000cc6bf7c4): kobject_uevent_env kobject: 'loop3' (00000000cc6bf7c4): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (0000000030b1264e): kobject_uevent_env kobject: 'loop0' (0000000030b1264e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (000000008c895d3a): kobject_uevent_env kobject: 'loop5' (000000008c895d3a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (000000000c1d0b2d): kobject_uevent_env kobject: 'loop1' (000000000c1d0b2d): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (000000008c895d3a): kobject_uevent_env kobject: 'loop5' (000000008c895d3a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (000000000c1d0b2d): kobject_uevent_env kobject: 'loop1' (000000000c1d0b2d): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (000000008a57d457): kobject_uevent_env kobject: 'loop4' (000000008a57d457): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (000000000c1d0b2d): kobject_uevent_env kobject: 'loop1' (000000000c1d0b2d): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000cc6bf7c4): kobject_uevent_env kobject: 'loop3' (00000000cc6bf7c4): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (000000000c1d0b2d): kobject_uevent_env kobject: 'loop1' (000000000c1d0b2d): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (0000000030b1264e): kobject_uevent_env kobject: 'loop0' (0000000030b1264e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000008a57d457): kobject_uevent_env kobject: 'loop4' (000000008a57d457): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (000000008a57d457): kobject_uevent_env kobject: 'loop4' (000000008a57d457): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000cc6bf7c4): kobject_uevent_env kobject: 'loop3' (00000000cc6bf7c4): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (000000008c895d3a): kobject_uevent_env kobject: 'loop5' (000000008c895d3a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (0000000030b1264e): kobject_uevent_env kobject: 'loop0' (0000000030b1264e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000cc6bf7c4): kobject_uevent_env kobject: 'loop3' (00000000cc6bf7c4): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (0000000030b1264e): kobject_uevent_env kobject: 'loop0' (0000000030b1264e): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000008a57d457): kobject_uevent_env kobject: 'loop4' (000000008a57d457): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000008c895d3a): kobject_uevent_env kobject: 'loop5' (000000008c895d3a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000abff5f0e): kobject_uevent_env kobject: 'loop2' (00000000abff5f0e): fill_kobj_path: path = '/devices/virtual/block/loop2'