Fwd: 3.15: kernel BUG at kernel/auditsc.c:1525!

Steve Grubb pointed out that I forgot to cc: linux-audit. --Andy ---------- Forwarded message ---------- From: Andy Lutomirski <luto(a)amacapital.net&gt; Date: Mon, Jun 16, 2014 at 2:35 PM Subject: Re: 3.15: kernel BUG at kernel/auditsc.c:1525! To: Richard Weinberger <richard(a)nod.at&gt;, "H. Peter Anvin" <hpa(a)zytor.com&gt;, X86 ML <x86(a)kernel.org&gt; Cc: Toralf Förster <toralf.foerster(a)gmx.de&gt;, Eric Paris <eparis(a)redhat.com&gt;, Linux Kernel <linux-kernel(a)vger.kernel.org&gt; [cc: hpa, x86 list] On Mon, Jun 16, 2014 at 1:43 PM, Richard Weinberger <richard(a)nod.at&gt; wrote: Before you do that, just to clarify: What bitness is your kernel? That is, are you on 32-bit or 64-bit kernel? What bitness is your test case? 'file a.out' will say. What does /proc/cpuinfo say in flags? Can you try the attached patch? It's only compile-tested. To hpa, etc: It appears that entry_32.S is missing any call to the audit exit hook on the badsys path. If I'm diagnosing this bug report correctly, this causes OOPSes. The the world at large: it's increasingly apparent that no one (except maybe the blackhats) has ever scrutinized the syscall auditing code. This is two old severe bugs in the code that have probably been there for a long time. --Andy -- Andy Lutomirski AMA Capital Management, LLC