linux-kernel - [lkp-robot] [perf machine] 8edf8850d5: stderr./usr/src/linux-perf-x86_64-rhel-#/tools/perf/util/rb_resort.h:#:#:error:passing_argument#of'threads_sorted__new'from_incompatible_pointer

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Date:   Thu, 4 Jan 2018 13:51:10 +0800
From:   kernel test robot <xiaolong.ye@...el.com>
To:     Davidlohr Bueso <dave@...olabs.net>
Cc:     acme@...nel.org, jolsa@...hat.com, ak@...ux.intel.com,
        mingo@...hat.com, dave@...olabs.net, linux-kernel@...r.kernel.org,
        Davidlohr Bueso <dbueso@...e.de>, lkp@...org
Subject: [lkp-robot] [perf machine]  8edf8850d5:
 stderr./usr/src/linux-perf-x86_64-rhel-#/tools/perf/util/rb_resort.h:#:#:error:passing_argument#of'threads_sorted__new'from_incompatible_pointer_type[-Werror=incompatible-pointer-types]


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

commit: 8edf8850d51e911a35b5d7aad4f8604db11abc66 ("perf machine: Use cached rbtrees")
url: https://github.com/0day-ci/linux/commits/Davidlohr-Bueso/tools-perf-Update-rbtree-implementation-and-optimize-users/20171128-120320


in testcase: perf-sanity-tests
with following parameters:




on test machine: qemu-system-x86_64 -enable-kvm -cpu kvm64,+ssse3 -smp 2 -m 8G

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


[   68.830934] /usr/src/linux-perf-x86_64-rhel-7.2-8edf8850d51e911a35b5d7aad4f8604db11abc66/tools/perf/util/rb_resort.h:148:28: error: passing argument 1 of 'threads_sorted__new' from incompatible pointer type [-Werror=incompatible-pointer-types]


To reproduce:

        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,
Xiaolong

View attachment "job-script" of type "text/plain" (4382 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (19228 bytes)

View attachment "perf-sanity-tests" of type "text/plain" (9366 bytes)