Messages in this thread | | | Date | Wed, 23 Jul 2014 13:57:14 -0700 | From | Andrew Morton <> | Subject | Re: fs: use after free in /proc/pid/mountinfo |
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On Tue, 15 Jul 2014 16:01:34 -0700 (PDT) David Rientjes <rientjes@google.com> wrote:
> On Tue, 15 Jul 2014, Sasha Levin wrote: > > > I've been running mainline for a while, and while I can reproduce a different > > bug for Hugh, I can't reproduce this one at all. Not sure how to call it now, > > maybe memory corruption from somewhere else (I did find an unrelated memory > > corruption couple days ago)? > > > > I have a very large /proc/pid/mountinfo on one of my busy systems with VM > and slub debugging enabled and have not been able to reproduce the issue > while reading it in a loop for 24 hours. I would call the patch good on > that basis, but it's very strange you'd report this problem a day after > the patch was merged and could not reproduce it once it was reverted. > (Unless the patch was misapplied locally and reapplying it now worked, but > I doubt you originally merged -mm patches into a local tree yourself.)
I was going to revert "fs/seq_file: fallback to vmalloc allocation" but the idea of doing that is so lame and pathetic that I think I'll not do that. If we have a bug then let's just find and fix it when someone is able to trigger it.
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