On Tue, May 19, 2026 at 11:00 PM Dmitry Vyukov <[email protected]> wrote: > On Tue, 19 May 2026 at 21:19, Jann Horn <[email protected]> wrote: > > For debugging/fuzzing, it might be useful to have a KASAN redzone > > somewhere between legitimate data in an SKB and skb_shared_info > > metadata, accesses into which would cause KASAN splats. Maybe we could > > split sk_buff::end into two separate members for "end of tailroom" and > > "start of skb_shared_info" so that a redzone can be placed in between? > > Or let debug builds store the skb_shared_info in a separate memory > > allocation? [...] > Hi Jann! > > There was a related issue: > https://bugzilla.kernel.org/show_bug.cgi?id=199055 > > Not sure if it's better to include this into the existing issue, or > create a new one here: > https://bugzilla.kernel.org/buglist.cgi?bug_status=__open__&component=Sanitizers&product=Memory%20Management
Ah, thanks for the pointer. I have now filed this as https://bugzilla.kernel.org/show_bug.cgi?id=221554 .
