| From | Florian Weimer <> | Subject | Re: [patch 00/12] futex: Cure robust/PI futex exit races | Date | Thu, 07 Nov 2019 23:29:08 +0100 |
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* Thomas Gleixner:
> The series is also available from git: > > git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git WIP.locking/futex
I ran the glibc upstream test suite (which has some robust futex tests) against b21be7e942b49168ee15a75cbc49fbfdeb1e6a97 on x86-64, both native and 32-bit/i386 compat mode.
compat mode seems broken, nptl/tst-thread-affinity-pthread fails. This is probably *not* due to <https://bugzilla.kernel.org/show_bug.cgi?id=154011> because the failure is non-sporadic, but reliable fails for thread 253:
info: Detected CPU set size (in bits): 225 info: Maximum test CPU: 255 error: pthread_create for thread 253 failed: Resource temporarily unavailable
I'm running this on a large box as root, so ulimits etc. do not apply.
I did not see this failure with the x86-64 test.
You should be able to reproduce with (assuming you've got a multilib gcc):
git clone git://sourceware.org/git/glibc.git git mkdir build cd build ../git/configure --prefix=/usr CC="gcc -m32" CXX="g++ -m32" --build=i686-linux make -j`nproc` make test t=nptl/tst-thread-affinity-pthread
Thanks, Florian
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