Re: ipc,sem: sysv semaphore scalability

[Peter Hurley]

On Fri, 2013-03-29 at 11:43 -0700, Linus Torvalds wrote:
> I think I foud at least one bug in the MSG_COPY stuff: it leaks the
> "copy" allocation if
> 
>     mode == SEARCH_LESSEQUAL
> 
> but maybe I'm misreading it.

Yes, you're misreading it. copy_msg() returns the 'copy' address when
copying is successful. So this patch double-frees 'copy'.

Andrew has had the patches that fix this for a month but because they're
fairly extensive he didn't want to apply them for 3.9.

Regards,
Peter


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/