New: lvcreate: lock held when returning to user space

https://bugzilla.kernel.org/show_bug.cgi?id=42694

Summary: lvcreate: lock held when returning to user space
Product: File System
Version: 2.5
Kernel Version: 3.2.2
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: ext3
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: No

I got this with 3.2.2, creating a snapshot of an ext3 filesystem on lvm.

Let me know if you need more information.

lvcreate: sending ioctl 1261 to a partition!

================================================
[ BUG: lock held when returning to user space! ]
------------------------------------------------
lvcreate/23845 is leaving the kernel with locks still held! 1 lock held by lvcreate/23845:
#0: (&journal->j_barrier){+.+...}, at: [<ffffffff8110a60a>]
journal_lock_updates+0xdc/0xeb

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