Messages in this thread | | | Date | Fri, 27 Mar 2015 08:30:20 +0100 | From | Quentin Casasnovas <> | Subject | Re: Oops with tip/x86/fpu |
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On Thu, Mar 26, 2015 at 10:48:18PM +0000, Yu, Fenghua wrote: > > > sctxt->fpstate=(void *)1 changes the fpstate pointer in the > > > sigcontext. It will generate segfault and bad frame info in kernel. > > > > > > This is expected behavior, right? Is this still a valid test? > > > > Just to be clear, I saw a full-on kernel panic induced from an unprivileged > > application. > > > > Are you seeing something different? > > I use latest tip tree. Maybe it has the fixes already. I see "bad frame" > reported in kernel. Seems the issue has been fixed in tip tree. >
Fenghua, if you're interested, the details are now public here:
http://seclists.org/oss-sec/2015/q1/877
Quentin
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