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Message-ID: <20190311074115.GC10839@shao2-debian>
Date: Mon, 11 Mar 2019 15:41:15 +0800
From: kernel test robot <rong.a.chen@...el.com>
To: Alexey Dobriyan <adobriyan@...il.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
Shuah Khan <shuah@...nel.org>,
Andrew Morton <akpm@...ux-foundation.org>,
LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: [LKP] [proc] e483b02087: kernel_selftests.proc.proc-pid-vm.fail
FYI, we noticed the following commit (built with gcc-8):
commit: e483b0208784146864a2c195e316230647e9d297 ("proc: test /proc/*/maps, smaps, smaps_rollup, statm")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.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 4G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
KERNEL SELFTESTS: linux_headers_dir is /usr/src/linux-headers-x86_64-rhel-7.6-e483b0208784146864a2c195e316230647e9d297
2019-03-08 13:51:08 ln -sf /usr/bin/clang-7 /usr/bin/clang
2019-03-08 13:51:08 ln -sf /usr/bin/llc-7 /usr/bin/llc
2019-03-08 13:56:30 make run_tests -C proc
make: Entering directory '/usr/src/perf_selftests-x86_64-rhel-7.6-e483b0208784146864a2c195e316230647e9d297/tools/testing/selftests/proc'
gcc -Wall -O2 -Wno-unused-function -D_GNU_SOURCE fd-001-lookup.c -o /usr/src/perf_selftests-x86_64-rhel-7.6-e483b0208784146864a2c195e316230647e9d297/tools/testing/selftests/proc/fd-001-lookup
gcc -Wall -O2 -Wno-unused-function -D_GNU_SOURCE fd-002-posix-eq.c -o /usr/src/perf_selftests-x86_64-rhel-7.6-e483b0208784146864a2c195e316230647e9d297/tools/testing/selftests/proc/fd-002-posix-eq
gcc -Wall -O2 -Wno-unused-function -D_GNU_SOURCE fd-003-kthread.c -o /usr/src/perf_selftests-x86_64-rhel-7.6-e483b0208784146864a2c195e316230647e9d297/tools/testing/selftests/proc/fd-003-kthread
gcc -Wall -O2 -Wno-unused-function -D_GNU_SOURCE proc-loadavg-001.c -o /usr/src/perf_selftests-x86_64-rhel-7.6-e483b0208784146864a2c195e316230647e9d297/tools/testing/selftests/proc/proc-loadavg-001
proc-loadavg-001.c:17:0: warning: "_GNU_SOURCE" redefined
#define _GNU_SOURCE
<command-line>:0:0: note: this is the location of the previous definition
gcc -Wall -O2 -Wno-unused-function -D_GNU_SOURCE proc-pid-vm.c -o /usr/src/perf_selftests-x86_64-rhel-7.6-e483b0208784146864a2c195e316230647e9d297/tools/testing/selftests/proc/proc-pid-vm
gcc -Wall -O2 -Wno-unused-function -D_GNU_SOURCE proc-self-map-files-001.c -o /usr/src/perf_selftests-x86_64-rhel-7.6-e483b0208784146864a2c195e316230647e9d297/tools/testing/selftests/proc/proc-self-map-files-001
gcc -Wall -O2 -Wno-unused-function -D_GNU_SOURCE proc-self-map-files-002.c -o /usr/src/perf_selftests-x86_64-rhel-7.6-e483b0208784146864a2c195e316230647e9d297/tools/testing/selftests/proc/proc-self-map-files-002
gcc -Wall -O2 -Wno-unused-function -D_GNU_SOURCE proc-self-syscall.c -o /usr/src/perf_selftests-x86_64-rhel-7.6-e483b0208784146864a2c195e316230647e9d297/tools/testing/selftests/proc/proc-self-syscall
proc-self-syscall.c:16:0: warning: "_GNU_SOURCE" redefined
#define _GNU_SOURCE
<command-line>:0:0: note: this is the location of the previous definition
gcc -Wall -O2 -Wno-unused-function -D_GNU_SOURCE proc-self-wchan.c -o /usr/src/perf_selftests-x86_64-rhel-7.6-e483b0208784146864a2c195e316230647e9d297/tools/testing/selftests/proc/proc-self-wchan
gcc -Wall -O2 -Wno-unused-function -D_GNU_SOURCE proc-uptime-001.c -o /usr/src/perf_selftests-x86_64-rhel-7.6-e483b0208784146864a2c195e316230647e9d297/tools/testing/selftests/proc/proc-uptime-001
gcc -Wall -O2 -Wno-unused-function -D_GNU_SOURCE proc-uptime-002.c -o /usr/src/perf_selftests-x86_64-rhel-7.6-e483b0208784146864a2c195e316230647e9d297/tools/testing/selftests/proc/proc-uptime-002
proc-uptime-002.c:18:0: warning: "_GNU_SOURCE" redefined
#define _GNU_SOURCE
<command-line>:0:0: note: this is the location of the previous definition
gcc -Wall -O2 -Wno-unused-function -D_GNU_SOURCE read.c -o /usr/src/perf_selftests-x86_64-rhel-7.6-e483b0208784146864a2c195e316230647e9d297/tools/testing/selftests/proc/read
gcc -Wall -O2 -Wno-unused-function -D_GNU_SOURCE self.c -o /usr/src/perf_selftests-x86_64-rhel-7.6-e483b0208784146864a2c195e316230647e9d297/tools/testing/selftests/proc/self
gcc -Wall -O2 -Wno-unused-function -D_GNU_SOURCE setns-dcache.c -o /usr/src/perf_selftests-x86_64-rhel-7.6-e483b0208784146864a2c195e316230647e9d297/tools/testing/selftests/proc/setns-dcache
gcc -Wall -O2 -Wno-unused-function -D_GNU_SOURCE thread-self.c -o /usr/src/perf_selftests-x86_64-rhel-7.6-e483b0208784146864a2c195e316230647e9d297/tools/testing/selftests/proc/thread-self
TAP version 13
selftests: proc: fd-001-lookup
========================================
ok 1..1 selftests: proc: fd-001-lookup [PASS]
selftests: proc: fd-002-posix-eq
========================================
ok 1..2 selftests: proc: fd-002-posix-eq [PASS]
selftests: proc: fd-003-kthread
========================================
ok 1..3 selftests: proc: fd-003-kthread [PASS]
selftests: proc: proc-loadavg-001
========================================
ok 1..4 selftests: proc: proc-loadavg-001 [PASS]
selftests: proc: proc-pid-vm
========================================
proc-pid-vm: proc-pid-vm.c:277: main: Assertion `rv == strlen(buf0)' failed.
Aborted
not ok 1..5 selftests: proc: proc-pid-vm [FAIL]
selftests: proc: proc-self-map-files-001
========================================
ok 1..6 selftests: proc: proc-self-map-files-001 [PASS]
selftests: proc: proc-self-map-files-002
========================================
ok 1..7 selftests: proc: proc-self-map-files-002 [PASS]
selftests: proc: proc-self-syscall
========================================
ok 1..8 selftests: proc: proc-self-syscall [PASS]
selftests: proc: proc-self-wchan
========================================
ok 1..9 selftests: proc: proc-self-wchan [PASS]
selftests: proc: proc-uptime-001
========================================
ok 1..10 selftests: proc: proc-uptime-001 [PASS]
selftests: proc: proc-uptime-002
========================================
ok 1..11 selftests: proc: proc-uptime-002 [PASS]
selftests: proc: read
========================================
ok 1..12 selftests: proc: read [PASS]
selftests: proc: self
========================================
ok 1..13 selftests: proc: self [PASS]
selftests: proc: setns-dcache
========================================
ok 1..14 selftests: proc: setns-dcache [PASS]
selftests: proc: thread-self
========================================
ok 1..15 selftests: proc: thread-self [PASS]
make: Leaving directory '/usr/src/perf_selftests-x86_64-rhel-7.6-e483b0208784146864a2c195e316230647e9d297/tools/testing/selftests/proc'
To reproduce:
# build kernel
cd linux
cp config-5.0.0-03428-ge483b02 .config
make HOSTCC=gcc-8 CC=gcc-8 ARCH=x86_64 olddefconfig
make HOSTCC=gcc-8 CC=gcc-8 ARCH=x86_64 prepare
make HOSTCC=gcc-8 CC=gcc-8 ARCH=x86_64 modules_prepare
make HOSTCC=gcc-8 CC=gcc-8 ARCH=x86_64 SHELL=/bin/bash
make HOSTCC=gcc-8 CC=gcc-8 ARCH=x86_64 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-5.0.0-03428-ge483b02" of type "text/plain" (191805 bytes)
View attachment "job-script" of type "text/plain" (6334 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (17788 bytes)
View attachment "kernel_selftests" of type "text/plain" (120479 bytes)
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