Messages in this thread | | | Date | Thu, 21 Mar 2013 13:15:08 -0700 | Subject | Re: VFS deadlock ? | From | Linus Torvalds <> |
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On Thu, Mar 21, 2013 at 12:29 PM, Al Viro <viro@zeniv.linux.org.uk> wrote: > > #0 oddity aside, that looks very much like directory aliased by two different > dentries. Try to add > BUG_ON(p1->d_inode == p2->d_inode); > just before > mutex_lock(&p1->d_inode->i_sb->s_vfs_rename_mutex); > and see if it triggers.
Don't do a BUG_ON(), instead do something like
if (WARN_ON_ONCE(p1->d_inode == p2->d_inode)) { printk("pi=%s p2=%s\n", pi->d_name, p2->d_name); mutex_lock_nested(&p1->d_inode->i_mutex, I_MUTEX_PARENT); return NULL; }
so that we actually see where it is. I'm assuming it's some sysfs oddity again..
Linus
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