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Date: Sun, 4 Aug 2013 23:16:47 -0500 From: Felipe Contreras <felipe.contreras@...il.com> To: Oleg Nesterov <oleg@...hat.com> Cc: Andrew Morton <akpm@...ux-foundation.org>, Benjamin Herrenschmidt <benh@...nel.crashing.org>, Frederic Weisbecker <fweisbec@...il.com>, Ingo Molnar <mingo@...e.hu>, Jan Kratochvil <jan.kratochvil@...hat.com>, Michael Neuling <mikey@...ling.org>, Paul Mackerras <paulus@...ba.org>, Paul Mundt <lethal@...ux-sh.org>, Prasad <prasad@...ux.vnet.ibm.com>, Russell King <linux@....linux.org.uk>, Will Deacon <will.deacon@....com>, linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH 11/13] ptrace: PTRACE_DETACH should do flush_ptrace_hw_breakpoint(child) On Mon, May 13, 2013 at 10:17 AM, Oleg Nesterov <oleg@...hat.com> wrote: > Change ptrace_detach() to call flush_ptrace_hw_breakpoint(child). > This frees the slots for non-ptrace PERF_TYPE_BREAKPOINT users, and > this ensures that the tracee won't be killed by SIGTRAP triggered by > the active breakpoints. There is something wrong with this patch. I've bisected an issue I've seen in v3.11-rcx kernels while running Starcraft II through wine, it's crashes 100% of the time, I revert this patch, and there's no crash any more. -- Felipe Contreras -- 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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