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Message-ID: <cc557aab0906120410h71e3ab59neeaf85c3223fd7c6@mail.gmail.com> Date: Fri, 12 Jun 2009 14:10:20 +0300 From: "Kirill A. Shutemov" <kirill@...temov.name> To: "Kirill A. Shutemov" <kirill@...temov.name>, linux-arm-kernel@...ts.arm.linux.org.uk, Nicolas Pitre <nico@....org>, linux-kernel@...r.kernel.org, linux@....linux.org.uk Subject: Re: ERESTART_RESTARTBLOCK and ptrace() On Thu, Jun 11, 2009 at 5:27 PM, Daniel Jacobowitz<dan@...ian.org> wrote: > On Wed, Jun 10, 2009 at 01:25:34PM +0300, Kirill A. Shutemov wrote: >> I've got bug in handling ERESTART_RESTARTBLOCK. Kernel version is 2.6.28. >> >> Steps to reproduce: >> 1. Attach using ptrace() to process while it's in a syscall which use >> ERESTART_RESTARTBLOCK >> on interrupt. The easiest way is to attach to process which is in nanosleep(). >> 2. Run a syscall in context of the process like it does gdb. >> 3. Continue the process. >> >> Results: >> Syscall(nanosleep) return error code 516(ERESTART_RESTARTBLOCK). It's >> kernel's internal error >> code and should never appear at userspace. >> >> It seems ARM-related since I can't reproduce it on x86. > > That's because GDB has code to do the right thing on x86. Consider > filing a GDB bug please. http://sourceware.org/bugzilla/show_bug.cgi?id=10267 -- 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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