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Date: Sun, 15 Dec 2013 20:33:45 +0100 From: Sebastian Andrzej Siewior <bigeasy@...utronix.de> To: Ben Hutchings <ben@...adent.org.uk> CC: Thomas Gleixner <tglx@...utronix.de>, Peter Zijlstra <a.p.zijlstra@...llo.nl>, Steven Rostedt <rostedt@...tedt.homelinux.com>, 723180@...s.debian.org, Brian Silverman <bsilver16384@...il.com>, LKML <linux-kernel@...r.kernel.org> Subject: Re: Double fault when single-stepping compat task with PREEMPT_RT On 09/25/2013 03:24 PM, Ben Hutchings wrote: > On Tue, 2013-09-24 at 13:43 -0700, Brian Silverman wrote: [...] >> I got down to a really simple program that reproduces this bug: >> >> >> #include <sys/syscall.h> #include <unistd.h> int main() { // I've >> tried SYS_getpid, SYS_write, and SYS_read here too. >> syscall(SYS_gettid); } Brian, thank you for this excellent stripped down test case. I think I know what is going on, will dig more later. > Ben. > Sebastian -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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