Re: linux-next: Tree for Jan 20 -- Kernel panic - Unable to mount root fs

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On Tue, Jan 20, 2015 at 08:01:26PM -0800, Guenter Roeck wrote:
> With this patch:
> 
> sys_mkdir .:40775 returned -17
> sys_mkdir usr:40775 returned 0
> sys_mkdir usr/lib:40775 returned 0
> sys_mkdir usr/share:40755 returned 0
> sys_mkdir usr/share/udhcpc:40755 returned 0
> sys_mkdir usr/bin:40775 returned 0
> sys_mkdir usr/sbin:40775 returned 0
> sys_mkdir mnt:40775 returned 0
> sys_mkdir proc:40775 returned 0
> sys_mkdir root:40775 returned 0
> sys_mkdir lib:40775 returned 0
> sys_mkdir lib/modules:40775 returned 0
> ...
> 
> and the problem is fixed.

... except that it simply confirms that something's fishy with getname_kernel()
of ->name of struct filename returned by getname().  IOW, I still do not
understand the mechanism of breakage there.

Another thing I really do not understand is
+               if (inode->i_ino) {
+                       /* valid inode number, use that for the comparison */
+                       if (n->ino != inode->i_ino ||
+                           n->dev != inode->i_sb->s_dev)
+                               continue;
in __audit_inode().  We don't *have* dentries with dentry->d_inode->i_ino == 0.
Ever.  WTF is that about?  Paul?
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