Re: [PATCH][Resend v2] Fix infinite loop in search_binary_handler()

[Richard Weinberger]

Am Dienstag 05 Juli 2011, 14:02:34 schrieb Tetsuo Handa:
> Richard Weinberger wrote:
> > But IMHO adding a new attribute to task_struct is a bit overkill.
> > Why is your variant better than my strcmp() in fs/exec.c?
> 
> Say, there are multiple /sbin/modprobe
> 
> /sbin/modprobe
> /var/chroot/sbin/modprobe
> 
> and only /var/chroot/sbin/modprobe needs request_module() whereas
> /sbin/modprobe does not need request_module(). Why do we need to make
> execl("/sbin/modprobe", "--help", NULL) from chroot("/var/chroot/") fail
> by denying request_module() that does not cause recursion?

*headdesk*, bprm->filename will contain "/sbin/modprobe" and the strcmp()
will falsely match.
Thanks for the pointer!

//richard
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