grub-devel
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [PATCH] ofdisk: allocate space for vscsi table


From: Vladimir 'phcoder' Serbinenko
Subject: Re: [PATCH] ofdisk: allocate space for vscsi table
Date: Mon, 9 Nov 2015 17:49:23 +0100


Le 9 nov. 2015 5:34 PM, "Paulo Flabiano Smorigo" <address@hidden> a écrit :
>
> On Mon, Nov 9, 2015 at 10:03 AM, Vladimir 'phcoder' Serbinenko
> <address@hidden> wrote:
> >
> > Le 9 nov. 2015 1:00 PM, "Paulo Flabiano Smorigo" <address@hidden> a
> > écrit :
> >>
> >> On Mon, Nov 9, 2015 at 8:46 AM, Vladimir 'φ-coder/phcoder' Serbinenko
> >> <address@hidden> wrote:
> >> > On 09.11.2015 02:33, Paulo Flabiano Smorigo wrote:
> >> >> +      /* 64 entries should be enough */
> >> >> +      table_size = sizeof (grub_uint64_t) * 64;
> >> > Can we do something better than assuming a particular upper limit? You
> >> > don't even pass this limit to the function in any way. You basically get
> >> > a buffer overflow. Should we perhaps pass the limit in nentries? Or do
> >> > something similar?
> >>
> >> For sas there is an input attribute called max that I use as an upper
> >> limit. AFAIK, vscsi method doesn't have it. nentries is a output
> >> attribute.
> >>
> >> I'll investigate it.
> >>
> > Can't we just properly free returned memory? Or perhaps even just tolerate
> > the leak and only ensure that it happens only once per controller per GRUB
> > run?
>
> Talked to the Open firmware team and we don't need to allocate the
> space. The vscsi implementation takes care of all of the memory
> management. The result of the call stays in a reserved memory and is
> never freed.
>
> For vscsi-report-luns method there are no input values.
>
> So, this patch isn't necessary. Should I put this info as a comment in the code?
>
Sure, add this as a comment
> >> >
> >> >
> >> > _______________________________________________
> >> > Grub-devel mailing list
> >> > address@hidden
> >> > https://lists.gnu.org/mailman/listinfo/grub-devel
> >> >
> >>
> >> _______________________________________________
> >> Grub-devel mailing list
> >> address@hidden
> >> https://lists.gnu.org/mailman/listinfo/grub-devel
> >
> >
> > _______________________________________________
> > Grub-devel mailing list
> > address@hidden
> > https://lists.gnu.org/mailman/listinfo/grub-devel
> >
>
> _______________________________________________
> Grub-devel mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/grub-devel


reply via email to

[Prev in Thread] Current Thread [Next in Thread]