lkml.org 
[lkml]   [2017]   [May]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v7 0/5] skb_to_sgvec hardening
From
Date
On Tue, 2017-05-09 at 15:50 +0200, Jason A. Donenfeld wrote:
> The recent bug with macsec and historical one with virtio have
> indicated that letting skb_to_sgvec trounce all over an sglist
> without checking the length is probably a bad idea. And it's not
> necessary either: an sglist already explicitly marks its last
> item, and the initialization functions are diligent in doing so.
> Thus there's a clear way of avoiding future overflows.
>
> So, this patchset, from a high level, makes skb_to_sgvec return
> a potential error code, and then adjusts all callers to check
> for the error code.

Perhaps you should add __must_check annotation to the function
prototype(s)?

johannes

\
 
 \ /
  Last update: 2017-05-10 21:18    [W:0.045 / U:2.748 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site