Hi Erik,
On Wed, Jun 28, 2006 at 02:57:07PM -0600, Erik Frederiksen wrote:
>
> from include/asm-mips/errno.h
> #define EDQUOT 1133 /* Quota exceeded */
>
> I noticed that the errno value for EDQUOT on MIPS is considerably larger
> than all others. This can lead to a situation where functions using
> ERR_PTR() to return error codes in pointers cannot return this error
> code without IS_ERR() thinking that the pointer is valid. In my case,
> it caused an alignment exception in the XFS open call when quota has
> been exceeded in the linux-mips 2.6.14 kernel. I think that the XFS
> code has changed enough that this bug isn't in newer versions, though I
> haven't done a thorough investigation.
Hmm, I'm not sure I understand the XFS side of your report here - on
open, for quota to be coming into play we must be creating a new inode
and those code paths inside XFS have no use of IS_ERR/ERR_PTR magic...
did you mean there's generic problems here (I can see those macros are
used in the generic VFS open() code) ... or am I missing your point?
thanks.
--
Nathan
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