linux-kernel - Re: selftests: pidfd: pidfd_wait hangs on linux next kernel on all devices

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Message-ID: <20200924143317.getruzwu423g3o3e@wittgenstein>
Date:   Thu, 24 Sep 2020 16:33:17 +0200
From:   Christian Brauner <christian.brauner@...ntu.com>
To:     Naresh Kamboju <naresh.kamboju@...aro.org>
Cc:     "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>, linux-api@...r.kernel.org,
        open list <linux-kernel@...r.kernel.org>,
        Christian Brauner <christian@...uner.io>,
        Kees Cook <keescook@...omium.org>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Oleg Nesterov <oleg@...hat.com>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        Sargun Dhillon <sargun@...gun.me>,
        Aleksa Sarai <cyphar@...har.com>,
        Josh Triplett <josh@...htriplett.org>,
        Jens Axboe <axboe@...nel.dk>, Shuah Khan <shuah@...nel.org>,
        lkft-triage@...ts.linaro.org
Subject: Re: selftests: pidfd: pidfd_wait hangs on linux next kernel on all
 devices

On Wed, Sep 23, 2020 at 07:52:05PM +0530, Naresh Kamboju wrote:
> selftests: pidfd: pidfd_wait hangs on linux next kernel on x86_64,
> i386 and arm64 Juno-r2
> These devices are using NFS mounted rootfs.
> I have tested pidfd testcases independently and all test PASS.
> 
> The Hang or exit from test run noticed when run by run_kselftest.sh
> 
> pidfd_wait.c:208:wait_nonblock:Expected sys_waitid(P_PIDFD, pidfd,
> &info, WSTOPPED, NULL) (-1) == 0 (0)
> wait_nonblock: Test terminated by assertion
> 
> metadata:
>   git branch: master
>   git repo: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
>   git commit: e64997027d5f171148687e58b78c8b3c869a6158
>   git describe: next-20200922
>   make_kernelversion: 5.9.0-rc6
>   kernel-config:
> http://snapshots.linaro.org/openembedded/lkft/lkft/sumo/intel-core2-32/lkft/linux-next/865/config
> 
> Reported-by: Naresh Kamboju <naresh.kamboju@...aro.org>

Thanks for reproting this. I'm taking a look now!
Christian
 https://lkft.linaro.org