linux-kernel - [blackhole_dev] 509e56b37c: kernel_selftests.net.test_blackhole

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Message-ID: <20190712064850.GC20848@shao2-debian>
Date:   Fri, 12 Jul 2019 14:48:51 +0800
From:   kernel test robot <rong.a.chen@...el.com>
To:     Mahesh Bandewar <maheshb@...gle.com>
Cc:     "David S. Miller" <davem@...emloft.net>,
        LKML <linux-kernel@...r.kernel.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>, lkp@...org
Subject: [blackhole_dev] 509e56b37c:
 kernel_selftests.net.test_blackhole_dev.sh.fail

FYI, we noticed the following commit (built with gcc-7):

commit: 509e56b37cc32c9b5fc2be585c25d1e60d6a1d73 ("blackhole_dev: add a selftest")
https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next.git master

in testcase: kernel_selftests
with following parameters:

	group: kselftests-02

test-description: The kernel contains a set of "self tests" under the tools/testing/selftests/ directory. These are intended to be small unit tests to exercise individual code paths in the kernel.
test-url: https://www.kernel.org/doc/Documentation/kselftest.txt


on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 8G

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):


If you fix the issue, kindly add following tag
Reported-by: kernel test robot <rong.a.chen@...el.com>


# selftests: net: test_blackhole_dev.sh
# test_blackhole_dev: [FAIL]
not ok 13 selftests: net: test_blackhole_dev.sh

To reproduce:

        # build kernel
	cd linux
	cp config-5.2.0-rc6-01701-g509e56b37cc32c .config
	make HOSTCC=gcc-7 CC=gcc-7 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email



Thanks,
Rong Chen


View attachment "config-5.2.0-rc6-01701-g509e56b37cc32c" of type "text/plain" (195263 bytes)

View attachment "job-script" of type "text/plain" (6594 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (59620 bytes)

View attachment "kernel_selftests" of type "text/plain" (146868 bytes)