Messages in this thread | | | Subject | Re: [gcov_module_notifier] WARNING: CPU: 0 PID: 155 at mm/slab_common.c:996 kmalloc_slab+0x1f/0x79 | From | Peter Oberparleiter <> | Date | Fri, 20 Apr 2018 13:08:07 +0200 |
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On 19.04.2018 04:58, Fengguang Wu wrote: > FYI this happens in mainline kernel 4.17.0-rc1. > It at least dates back to v4.5 .
This is likely the result of compiling the kernel with GCC 7 while specifying that gcov-kernel should expect GCC <= 3.4 format data:
dmesg: > (gcc version 7.3.0 (Debian 7.3.0-1)) #31 Mon Apr 16 23:17:50 CST 2018
.config: > # CONFIG_GCOV_FORMAT_AUTODETECT is not set > CONFIG_GCOV_FORMAT_3_4=y > # CONFIG_GCOV_FORMAT_4_7 is not set
As such, it is an expected test failure. Assuming that this is a randconfig test, my recommendation would be to blacklist "CONFIG_GCOV_FORMAT_3_4=y" when using GCC >3.4.
-- Peter Oberparleiter Linux on Z Development - IBM Germany
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