linux-kernel - Re: commit cfafcd117 "futex: Rework futex_lock_pi() to use rt_mutex_*_proxy_lock()" causes glibc nptl/tst-robustpi8 failure

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Message-ID: <20170518080439.GA281@x4>
Date:   Thu, 18 May 2017 10:04:39 +0200
From:   Markus Trippelsdorf <markus@...ppelsdorf.de>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     linux-kernel@...r.kernel.org, fweimer@...hat.com,
        Thomas Gleixner <tglx@...utronix.de>
Subject: Re: commit cfafcd117 "futex: Rework futex_lock_pi() to use
 rt_mutex_*_proxy_lock()" causes glibc nptl/tst-robustpi8 failure

On 2017.05.18 at 09:40 +0200, Peter Zijlstra wrote:
> On Wed, May 17, 2017 at 07:36:46PM +0200, Markus Trippelsdorf wrote:
> > Since:
> > commit cfafcd117da0216520568c195cb2f6cd1980c4bb
> > Author: Peter Zijlstra <peterz@...radead.org>
> > Date:   Wed Mar 22 11:35:58 2017 +0100
> > 
> >     futex: Rework futex_lock_pi() to use rt_mutex_*_proxy_lock()
> > 
> > glibc's nptl/tst-robustpi8 testcase fails:
> > 
> > glibc-build % ./nptl/tst-robustpi8
> > tst-robustpi8: ../nptl/pthread_mutex_lock.c:424: __pthread_mutex_lock_full: Assertion `INTERNAL_SYSCALL_ERRNO (e, __err) != ESRCH || !robust' failed.
> 
> OK, so how do I get those tests build?
> 
> I did a checkout of glibc.git
> 
> glibc$ mkdir build; cd build
> build$ ../configure --disable-sanity-checks ; make -j40
> build$ ./nptl/tst-robustpi8
> -bash: ./nptl/tst-robustpi8: No such file or directory
> 
> "make tests" doesn't seem to work either even though its a build target
> listed in the Makefiles.
> 
> What magic incantation do I need?

Something like:

 % ~/glibc/configure --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --with-headers=/usr/include --enable-add-ons --enable-kernel=4.10 --with-tls --with-__thread --enable-bind-now --without-gd --without-cvs --disable-profile --disable-multi-arch --disable-werror 
 % make -j128
 % make -j128 check

But I've attached the testcase, so building should be unnecessary.

-- 
Markus

Download attachment "tst-robustpi8.xz" of type "application/octet-stream" (23544 bytes)