Re: kernel BUG at fs/dcache.c:2105 (__d_rehash(): BUG_ON(!d_unhashed(entry)))

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On 9/18/12 4:04 PM, "J. Bruce Fields" <bfields@xxxxxxxxxxxx> wrote:

>On Mon, Sep 17, 2012 at 06:53:16PM -0400, Banerjee, Debabrata wrote:
>[229978.873082] Pid: 11817, comm: xxxxxxxx. Not tainted 3.0.30-3.0.1-amd64
>
>What's 3.0.30-3.0.1?  Is this reproduceable with an upstream kernel?
>
>--b.

An internal build number, it's 3.0.30. Also I already skimmed for relevant
patches to fs/ext2/* and fs/dcache* in stable and mainline and could find
none. My best guess right now is a race somewhere in ext2, dentry must get
rehashed between __d_drop(dentry) and __d_rehash(dentry,Š) in __d_move().

-Debabrata

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