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Open Source and information security mailing list archives
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Date: Fri, 17 Feb 2017 09:23:43 -0800 From: "Luis R. Rodriguez" <mcgrof@...nel.org> To: Andy Lutomirski <luto@...capital.net> Cc: Michal Hocko <mhocko@...nel.org>, Andrew Morton <akpm@...ux-foundation.org>, Ingo Molnar <mingo@...nel.org>, Andy Lutomirski <luto@...nel.org>, Kees Cook <keescook@...omium.org>, "Eric W. Biederman" <ebiederm@...ssion.com>, Mateusz Guzik <mguzik@...hat.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: kmemleak splat on copy_process() On Fri, Feb 17, 2017 at 9:07 AM, Andy Lutomirski <luto@...capital.net> wrote: > But maybe > there really is a race in which a kmemleak check right in the middle > of duplicating the task struct really can't see the stack pointer. Funny, but it was actually using kmemleak how I can easily reproduce: To reproduce the kmemleak splat: echo clear > /sys/kernel/debug/kmemleak echo scan > /sys/kernel/debug/kmemleak cat /sys/kernel/debug/kmemleak Try that. Luis
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