overlayfs: upperdir is in-use as upperdir/workdir of another mount, mount with '-o index=off' to override exclusive upperdir protection. ====================================================== WARNING: possible circular locking dependency detected 4.19.83 #0 Not tainted ------------------------------------------------------ syz-executor.5/10056 is trying to acquire lock: 000000007a3a3b57 (&ovl_i_mutex_key[depth]#2){+.+.}, at: inode_lock include/linux/fs.h:747 [inline] 000000007a3a3b57 (&ovl_i_mutex_key[depth]#2){+.+.}, at: ovl_write_iter+0x148/0xc20 fs/overlayfs/file.c:268 but task is already holding lock: 9pnet: Could not find request transport: xen 00000000ce61b21b (&pipe->mutex/1){+.+.}, at: pipe_lock_nested fs/pipe.c:62 [inline] 00000000ce61b21b (&pipe->mutex/1){+.+.}, at: pipe_lock+0x6e/0x80 fs/pipe.c:70 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&pipe->mutex/1){+.+.}: __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0xf7/0x1300 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 pipe_lock_nested fs/pipe.c:62 [inline] pipe_lock+0x6e/0x80 fs/pipe.c:70 iter_file_splice_write+0x18b/0xbd0 fs/splice.c:700 do_splice_from fs/splice.c:852 [inline] do_splice+0x642/0x12c0 fs/splice.c:1148 __do_sys_splice fs/splice.c:1415 [inline] __se_sys_splice fs/splice.c:1395 [inline] __x64_sys_splice+0x2c6/0x330 fs/splice.c:1395 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #2 (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+0x208/0x360 fs/super.c:1387 sb_start_write include/linux/fs.h:1578 [inline] mnt_want_write+0x3f/0xc0 fs/namespace.c:360 ovl_want_write+0x76/0xa0 fs/overlayfs/util.c:24 ovl_rename+0x234/0x1870 fs/overlayfs/dir.c:1082 vfs_rename+0x7fe/0x1a60 fs/namei.c:4476 do_renameat2+0xb0f/0xc40 fs/namei.c:4626 __do_sys_rename fs/namei.c:4672 [inline] __se_sys_rename fs/namei.c:4670 [inline] __x64_sys_rename+0x61/0x80 fs/namei.c:4670 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #1 (&ovl_i_mutex_key[depth]/4){+.+.}: down_write_nested+0x3c/0x90 kernel/locking/rwsem.c:192 inode_lock_nested include/linux/fs.h:782 [inline] lock_two_nondirectories+0xdd/0x120 fs/inode.c:1009 vfs_rename+0x440/0x1a60 fs/namei.c:4450 do_renameat2+0xb0f/0xc40 fs/namei.c:4626 __do_sys_rename fs/namei.c:4672 [inline] __se_sys_rename fs/namei.c:4670 [inline] __x64_sys_rename+0x61/0x80 fs/namei.c:4670 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&ovl_i_mutex_key[depth]#2){+.+.}: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3903 down_write+0x38/0x90 kernel/locking/rwsem.c:70 inode_lock include/linux/fs.h:747 [inline] ovl_write_iter+0x148/0xc20 fs/overlayfs/file.c:268 call_write_iter include/linux/fs.h:1820 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x587/0x810 fs/read_write.c:487 __kernel_write+0x110/0x390 fs/read_write.c:506 write_pipe_buf+0x15d/0x1f0 fs/splice.c:798 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x391/0x7d0 fs/splice.c:627 splice_from_pipe+0x108/0x170 fs/splice.c:662 default_file_splice_write+0x3c/0x90 fs/splice.c:810 do_splice_from fs/splice.c:852 [inline] do_splice+0x642/0x12c0 fs/splice.c:1148 __do_sys_splice fs/splice.c:1415 [inline] __se_sys_splice fs/splice.c:1395 [inline] __x64_sys_splice+0x2c6/0x330 fs/splice.c:1395 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Chain exists of: &ovl_i_mutex_key[depth]#2 --> sb_writers#4 --> &pipe->mutex/1 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&pipe->mutex/1); lock(sb_writers#4); lock(&pipe->mutex/1); lock(&ovl_i_mutex_key[depth]#2); *** DEADLOCK *** 2 locks held by syz-executor.5/10056: #0: 00000000dbb63272 (sb_writers#18){.+.+}, at: file_start_write include/linux/fs.h:2775 [inline] #0: 00000000dbb63272 (sb_writers#18){.+.+}, at: do_splice+0xd44/0x12c0 fs/splice.c:1147 #1: 00000000ce61b21b (&pipe->mutex/1){+.+.}, at: pipe_lock_nested fs/pipe.c:62 [inline] #1: 00000000ce61b21b (&pipe->mutex/1){+.+.}, at: pipe_lock+0x6e/0x80 fs/pipe.c:70 stack backtrace: CPU: 0 PID: 10056 Comm: syz-executor.5 Not tainted 4.19.83 #0 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+0x172/0x1f0 lib/dump_stack.c:113 print_circular_bug.isra.0.cold+0x1cc/0x28f kernel/locking/lockdep.c:1221 check_prev_add kernel/locking/lockdep.c:1861 [inline] check_prevs_add kernel/locking/lockdep.c:1974 [inline] validate_chain kernel/locking/lockdep.c:2415 [inline] __lock_acquire+0x2e19/0x49c0 kernel/locking/lockdep.c:3411 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3903 down_write+0x38/0x90 kernel/locking/rwsem.c:70 inode_lock include/linux/fs.h:747 [inline] ovl_write_iter+0x148/0xc20 fs/overlayfs/file.c:268 call_write_iter include/linux/fs.h:1820 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x587/0x810 fs/read_write.c:487 __kernel_write+0x110/0x390 fs/read_write.c:506 write_pipe_buf+0x15d/0x1f0 fs/splice.c:798 splice_from_pipe_feed fs/splice.c:503 [inline] __splice_from_pipe+0x391/0x7d0 fs/splice.c:627 splice_from_pipe+0x108/0x170 fs/splice.c:662 default_file_splice_write+0x3c/0x90 fs/splice.c:810 do_splice_from fs/splice.c:852 [inline] do_splice+0x642/0x12c0 fs/splice.c:1148 __do_sys_splice fs/splice.c:1415 [inline] __se_sys_splice fs/splice.c:1395 [inline] __x64_sys_splice+0x2c6/0x330 fs/splice.c:1395 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a219 Code: ad b6 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fda0a63cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 000000000045a219 RDX: 0000000000000007 RSI: 0000000000000000 RDI: 0000000000000006 RBP: 000000000075bf20 R08: 0000000000001000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fda0a63d6d4 R13: 00000000004ca1a6 R14: 00000000004e1350 R15: 00000000ffffffff protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop2' (00000000c72d3e6c): kobject_uevent_env kobject: 'loop2' (00000000c72d3e6c): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (00000000c3545b42): kobject_uevent_env kobject: 'loop4' (00000000c3545b42): fill_kobj_path: path = '/devices/virtual/block/loop4' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop3' (0000000026fd5e39): kobject_uevent_env kobject: 'loop3' (0000000026fd5e39): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (000000007e2b2d84): kobject_uevent_env kobject: 'loop0' (000000007e2b2d84): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (00000000c4798ab6): kobject_uevent_env kobject: 'loop5' (00000000c4798ab6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (0000000026fd5e39): kobject_uevent_env kobject: 'loop3' (0000000026fd5e39): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000c72d3e6c): kobject_uevent_env kobject: 'loop2' (00000000c72d3e6c): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop0' (000000007e2b2d84): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'loop0' (000000007e2b2d84): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop4' (00000000c3545b42): kobject_uevent_env kobject: 'loop4' (00000000c3545b42): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop1' (000000008df683be): kobject_uevent_env kobject: 'loop1' (000000008df683be): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000007e2b2d84): kobject_uevent_env kobject: 'loop0' (000000007e2b2d84): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000c3545b42): kobject_uevent_env kobject: 'loop4' (00000000c3545b42): fill_kobj_path: path = '/devices/virtual/block/loop4' overlayfs: unrecognized mount option "upperdZz=./file0" or missing value kobject: 'loop3' (0000000026fd5e39): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'loop3' (0000000026fd5e39): fill_kobj_path: path = '/devices/virtual/block/loop3' overlayfs: unrecognized mount option "upperdZz=./file0" or missing value kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop0' (000000007e2b2d84): kobject_uevent_env kobject: 'loop0' (000000007e2b2d84): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (00000000c4798ab6): kobject_uevent_env kobject: 'loop5' (00000000c4798ab6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'loop3' (0000000026fd5e39): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (0000000026fd5e39): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000c72d3e6c): kobject_uevent_env kobject: 'loop2' (00000000c72d3e6c): fill_kobj_path: path = '/devices/virtual/block/loop2' rdma_op 00000000580b29f4 conn xmit_rdma (null) kobject: 'loop0' (000000007e2b2d84): kobject_uevent_env kobject: 'loop0' (000000007e2b2d84): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000c3545b42): kobject_uevent_env kobject: 'loop4' (00000000c3545b42): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (000000007e2b2d84): kobject_uevent_env kobject: 'loop0' (000000007e2b2d84): fill_kobj_path: path = '/devices/virtual/block/loop0' overlayfs: at least 2 lowerdir are needed while upperdir nonexistent kobject: 'kvm' (00000000617d36ce): kobject_uevent_env 9pnet: Could not find request transport: xen kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop4' (00000000c3545b42): kobject_uevent_env kobject: 'loop4' (00000000c3545b42): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (0000000026fd5e39): kobject_uevent_env kobject: 'loop3' (0000000026fd5e39): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' overlayfs: at least 2 lowerdir are needed while upperdir nonexistent kobject: 'loop2' (00000000c72d3e6c): kobject_uevent_env 9pnet: Could not find request transport: xen kobject: 'loop2' (00000000c72d3e6c): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (000000008df683be): kobject_uevent_env 9pnet: Could not find request transport: xen kobject: 'loop1' (000000008df683be): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (00000000c4798ab6): kobject_uevent_env kobject: 'loop5' (00000000c4798ab6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000007e2b2d84): kobject_uevent_env kobject: 'loop0' (000000007e2b2d84): fill_kobj_path: path = '/devices/virtual/block/loop0' rdma_op 0000000066329af2 conn xmit_rdma (null) kobject: 'loop3' (0000000026fd5e39): kobject_uevent_env kobject: 'loop3' (0000000026fd5e39): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000c3545b42): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): kobject_uevent_env 9pnet: Could not find request transport: xen kobject: 'loop4' (00000000c3545b42): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' overlayfs: upperdir is in-use as upperdir/workdir of another mount, mount with '-o index=off' to override exclusive upperdir protection. kobject: 'loop0' (000000007e2b2d84): kobject_uevent_env kobject: 'loop0' (000000007e2b2d84): fill_kobj_path: path = '/devices/virtual/block/loop0' 9pnet: Could not find request transport: xen rdma_op 00000000b206c767 conn xmit_rdma (null) kobject: 'loop2' (00000000c72d3e6c): kobject_uevent_env kobject: 'loop2' (00000000c72d3e6c): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (00000000c3545b42): kobject_uevent_env kobject: 'loop4' (00000000c3545b42): fill_kobj_path: path = '/devices/virtual/block/loop4' net_ratelimit: 10 callbacks suppressed protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 9pnet: Could not find request transport: xen kobject: 'loop5' (00000000c4798ab6): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'loop5' (00000000c4798ab6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop0' (000000007e2b2d84): kobject_uevent_env kobject: 'loop0' (000000007e2b2d84): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (0000000026fd5e39): kobject_uevent_env kobject: 'loop3' (0000000026fd5e39): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000c3545b42): kobject_uevent_env kobject: 'loop4' (00000000c3545b42): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000c72d3e6c): kobject_uevent_env kobject: 'loop2' (00000000c72d3e6c): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop1' (000000008df683be): kobject_uevent_env kobject: 'loop1' (000000008df683be): fill_kobj_path: path = '/devices/virtual/block/loop1' rdma_op 000000004c0b1925 conn xmit_rdma (null) 9pnet: Could not find request transport: xen kobject: 'loop5' (00000000c4798ab6): kobject_uevent_env kobject: 'loop5' (00000000c4798ab6): fill_kobj_path: path = '/devices/virtual/block/loop5' 9pnet: Could not find request transport: xen kobject: 'loop3' (0000000026fd5e39): kobject_uevent_env hfsplus: unable to parse mount options kobject: 'loop3' (0000000026fd5e39): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (000000007e2b2d84): kobject_uevent_env kobject: 'loop0' (000000007e2b2d84): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'loop5' (00000000c4798ab6): kobject_uevent_env kobject: 'loop5' (00000000c4798ab6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (00000000c3545b42): kobject_uevent_env rdma_op 00000000c4634afa conn xmit_rdma (null) kobject: 'loop4' (00000000c3545b42): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000c72d3e6c): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' 9pnet: Could not find request transport: xen kobject: 'loop2' (00000000c72d3e6c): fill_kobj_path: path = '/devices/virtual/block/loop2' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 overlayfs: upperdir is in-use as upperdir/workdir of another mount, mount with '-o index=off' to override exclusive upperdir protection. kobject: 'loop5' (00000000c4798ab6): kobject_uevent_env 9pnet: Could not find request transport: xen kobject: 'loop5' (00000000c4798ab6): kobject_uevent_env kobject: 'loop5' (00000000c4798ab6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop5' (00000000c4798ab6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (0000000026fd5e39): kobject_uevent_env rdma_op 00000000197f3328 conn xmit_rdma (null) kobject: 'loop3' (0000000026fd5e39): fill_kobj_path: path = '/devices/virtual/block/loop3' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop5' (00000000c4798ab6): kobject_uevent_env kobject: 'loop5' (00000000c4798ab6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop0' (000000007e2b2d84): kobject_uevent_env kobject: 'loop0' (000000007e2b2d84): fill_kobj_path: path = '/devices/virtual/block/loop0' rdma_op 000000007e1c96cb conn xmit_rdma (null) kobject: 'loop3' (0000000026fd5e39): kobject_uevent_env kobject: 'loop3' (0000000026fd5e39): fill_kobj_path: path = '/devices/virtual/block/loop3' 9pnet: Could not find request transport: xen kobject: 'loop2' (00000000c72d3e6c): kobject_uevent_env kobject: 'loop2' (00000000c72d3e6c): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (00000000c3545b42): kobject_uevent_env kobject: 'loop4' (00000000c3545b42): fill_kobj_path: path = '/devices/virtual/block/loop4' overlayfs: upperdir is in-use as upperdir/workdir of another mount, mount with '-o index=off' to override exclusive upperdir protection. 9pnet: Could not find request transport: xen kobject: 'loop0' (000000007e2b2d84): kobject_uevent_env kobject: 'loop0' (000000007e2b2d84): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000c72d3e6c): kobject_uevent_env kobject: 'loop2' (00000000c72d3e6c): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (0000000026fd5e39): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (0000000026fd5e39): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (00000000c4798ab6): kobject_uevent_env kobject: 'loop5' (00000000c4798ab6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop1' (000000008df683be): kobject_uevent_env rdma_op 0000000050891f52 conn xmit_rdma (null) kobject: 'loop1' (000000008df683be): fill_kobj_path: path = '/devices/virtual/block/loop1' 9pnet: Could not find request transport: xen kobject: 'loop0' (000000007e2b2d84): kobject_uevent_env rdma_op 00000000a43739cc conn xmit_rdma (null) kobject: 'loop0' (000000007e2b2d84): fill_kobj_path: path = '/devices/virtual/block/loop0' overlayfs: upperdir is in-use as upperdir/workdir of another mount, mount with '-o index=off' to override exclusive upperdir protection. kobject: 'loop3' (0000000026fd5e39): kobject_uevent_env kobject: 'loop3' (0000000026fd5e39): fill_kobj_path: path = '/devices/virtual/block/loop3' 9pnet: Could not find request transport: xen kobject: 'loop4' (00000000c3545b42): kobject_uevent_env kobject: 'loop4' (00000000c3545b42): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000c72d3e6c): kobject_uevent_env kobject: 'loop2' (00000000c72d3e6c): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'kvm' (00000000617d36ce): kobject_uevent_env rdma_op 00000000ac23d4ed conn xmit_rdma (null) 9pnet: Could not find request transport: xen kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop0' (000000007e2b2d84): kobject_uevent_env kobject: 'loop0' (000000007e2b2d84): fill_kobj_path: path = '/devices/virtual/block/loop0' overlayfs: failed to resolve './file1': -2 kobject: 'loop5' (00000000c4798ab6): kobject_uevent_env 9pnet: Could not find request transport: xen kobject: 'loop5' (00000000c4798ab6): fill_kobj_path: path = '/devices/virtual/block/loop5' overlayfs: failed to resolve './file1': -2 kobject: 'loop3' (0000000026fd5e39): kobject_uevent_env kobject: 'loop3' (0000000026fd5e39): fill_kobj_path: path = '/devices/virtual/block/loop3' 9pnet: Could not find request transport: xen kobject: 'loop0' (000000007e2b2d84): kobject_uevent_env kobject: 'loop0' (000000007e2b2d84): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000c3545b42): kobject_uevent_env kobject: 'loop4' (00000000c3545b42): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'loop5' (00000000c4798ab6): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (00000000c4798ab6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000c72d3e6c): kobject_uevent_env kobject: 'loop2' (00000000c72d3e6c): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop1' (000000008df683be): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'loop1' (000000008df683be): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' 9pnet: Could not find request transport: xen kobject: 'loop0' (000000007e2b2d84): kobject_uevent_env kobject: 'loop0' (000000007e2b2d84): fill_kobj_path: path = '/devices/virtual/block/loop0' overlayfs: upperdir is in-use as upperdir/workdir of another mount, mount with '-o index=off' to override exclusive upperdir protection. 9pnet: Could not find request transport: xen kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop0' (000000007e2b2d84): kobject_uevent_env kobject: 'loop0' (000000007e2b2d84): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000c3545b42): kobject_uevent_env rds_sendmsg: 2 callbacks suppressed rdma_op 00000000343c3347 conn xmit_rdma (null) kobject: 'loop4' (00000000c3545b42): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (00000000c4798ab6): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'loop5' (00000000c4798ab6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'loop2' (00000000c72d3e6c): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop2' (00000000c72d3e6c): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (0000000026fd5e39): kobject_uevent_env kobject: 'loop3' (0000000026fd5e39): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop4' (00000000c3545b42): kobject_uevent_env kobject: 'loop4' (00000000c3545b42): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'loop0' (000000007e2b2d84): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'loop0' (000000007e2b2d84): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (0000000026fd5e39): kobject_uevent_env kobject: 'loop3' (0000000026fd5e39): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop5' (00000000c4798ab6): kobject_uevent_env kobject: 'loop5' (00000000c4798ab6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop2' (00000000c72d3e6c): kobject_uevent_env kobject: 'loop2' (00000000c72d3e6c): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop1' (000000008df683be): kobject_uevent_env rdma_op 0000000052224c14 conn xmit_rdma (null) kobject: 'loop1' (000000008df683be): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'loop4' (00000000c3545b42): kobject_uevent_env kobject: 'loop4' (00000000c3545b42): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop0' (000000007e2b2d84): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'loop0' (000000007e2b2d84): fill_kobj_path: path = '/devices/virtual/block/loop0' rdma_op 00000000de33fd1b conn xmit_rdma (null) kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (0000000026fd5e39): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'loop3' (0000000026fd5e39): fill_kobj_path: path = '/devices/virtual/block/loop3' net_ratelimit: 8 callbacks suppressed protocol 88fb is buggy, dev hsr_slave_0 kobject: 'kvm' (00000000617d36ce): kobject_uevent_env protocol 88fb is buggy, dev hsr_slave_1 kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'loop2' (00000000c72d3e6c): kobject_uevent_env kobject: 'loop2' (00000000c72d3e6c): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'loop5' (00000000c4798ab6): kobject_uevent_env rdma_op 00000000475a15a3 conn xmit_rdma (null) kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (00000000c4798ab6): fill_kobj_path: path = '/devices/virtual/block/loop5' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop0' (000000007e2b2d84): kobject_uevent_env kobject: 'loop0' (000000007e2b2d84): fill_kobj_path: path = '/devices/virtual/block/loop0' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop4' (00000000c3545b42): kobject_uevent_env 9pnet: Could not find request transport: xen kobject: 'loop4' (00000000c3545b42): fill_kobj_path: path = '/devices/virtual/block/loop4' 9pnet: Could not find request transport: xen kobject: 'loop3' (0000000026fd5e39): kobject_uevent_env kobject: 'loop3' (0000000026fd5e39): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (000000007e2b2d84): kobject_uevent_env kobject: 'loop0' (000000007e2b2d84): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'loop2' (00000000c72d3e6c): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop2' (00000000c72d3e6c): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (00000000c4798ab6): kobject_uevent_env 9pnet: Could not find request transport: xen kobject: 'loop5' (00000000c4798ab6): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (000000007e2b2d84): kobject_uevent_env kobject: 'loop0' (000000007e2b2d84): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000c3545b42): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): kobject_uevent_env kobject: 'loop4' (00000000c3545b42): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (0000000026fd5e39): kobject_uevent_env kobject: 'kvm' (00000000617d36ce): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop3' (0000000026fd5e39): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (000000008df683be): kobject_uevent_env rdma_op 00000000f28fee80 conn xmit_rdma (null) kobject: 'loop1' (000000008df683be): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (00000000c4798ab6): kobject_uevent_env kobject: 'loop5' (00000000c4798ab6): fill_kobj_path: path = '/devices/virtual/block/loop5' 9pnet: Could not find request transport: xen kobject: 'loop2' (00000000c72d3e6c): kobject_uevent_env