I am using the latest version 3.13. I will pull down that patch and try it
out.
On Wed, Feb 7, 2018 at 3:03 PM, Philippe Waroquiers <
[email protected]> wrote:
> Which version are you using ?
> Some improvements to clone handling was done in 3.13 :
> * On Linux, clone handling has been improved to honour CLONE_VFORK that
> involves a child stack. Note however that CLONE_VFORK | CLONE_VM is
> handled
> like CLONE_VFORK (by removing CLONE_VM), so applications that depend on
> CLONE_VM exact semantics will (still) not work.
>
> Otherwise, I am sure we have still a bunch of clone related bugs
> opened. E.g. https://bugs.kde.org/show_bug.cgi?id=183406
> and https://bugs.kde.org/show_bug.cgi?id=386427 which has
> a patch, and might be what you have encountered.
>
> Philippe
>
>
> On Wed, 2018-02-07 at 14:51 -0600, Adam Scott wrote:
> > I'm hoping someone else has seen this issue and is able to help me. I
> have search all over the internet for a solution and haven't been able to
> find one. I am trying to run Valgrind on armv7 architecture, and after
> compiling Valgrind and getting it onto the target I am able to run Valgrind
> successfully on 'ls -l' but when I run Valgrind on my executable it starts
> and then always fails after printing out this error:
> >
> > ==2333== Unsupported clone() flags: 0x800600
> > ==2333==
> > ==2333== The only supported clone() uses are:
> > ==2333== - via a threads library (LinuxThreads or NPTL)
> > ==2333== - via the implementation of fork or vfork
> > ==2333==
> > ==2333== Valgrind detected that your program requires
> > ==2333== the following unimplemented functionality:
> > ==2333== Valgrind does not support general clone().
> > ==2333== This may be because the functionality is hard to implement,
> > ==2333== or because no reasonable program would behave this way,
> > ==2333== or because nobody has yet needed it. In any case, let us know
> at
> > ==2333== www.valgrind.org and/or try to work around the problem, if you
> can.
> > ==2333==
> > ==2333== Valgrind has to exit now. Sorry. Bye!
> > ==2333==
> >
> > sched status:
> > running_tid=9
> >
> > The thread that has the crash has the following stack:
> > Thread 9: status = VgTs_Runnable (lwpid 2354)
> > ==2333== at 0x6C5BCC: sys_clone (linux_syscall_support.h:2666)
> > ==2333== by 0x6C5BCC: google_breakpad::ExceptionHandler::
> GenerateDump(google_breakpad::ExceptionHandler::CrashContext*)
> (exception_handler.cc:527)
> > ==2333== by 0x6C60C3:
> > google_breakpad::ExceptionHandler::SignalHandler(int,
> siginfo_t*, void*) (exception_handler.cc:368)
> > ==2333== by 0x4CE5ACF: ??? (in /lib/libc-2.22.so)
> > ------------------------------------------------------------
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