Re: Regression in Autofs, 2.6.15-git

[Al Viro]

On Sat, Jan 14, 2006 at 05:17:37AM -0800, Andrew Morton wrote:
> You oopsed accessing 0x00000030, and offsetof(super_block, s_flags) is
> 0x30.  So autofs4 has passed in a dentry which has a NULL
> dentry->d_inode->i_sb and the new code didn't expect that.
 
It's not just new code...  inode->i_sb should _never_ be NULL, period.
We set it immediately after memory had been allocated by alloc_inode()
and never modify afterwards, let alone reset to NULL.
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