[ardb:x86-pie-v4-wip] [x86] fa65278b9b: kunit.VCAP_API_DebugFS_Testsuite.vcap_api_show_admin_raw_test.fail

[kernel test robot]

Hello,


we don't have enough knowledge how this change caused below kunit test failed,
but the results in our tests are quite persistent.

=========================================================================================
tbox_group/testcase/rootfs/kconfig/compiler/group:
  lkp-hsw-d03/kunit/debian-13-x86_64-20250902.cgz/x86_64-rhel-9.4-kunit/gcc-14/group-03

96f4aca8b6e7fd65 fa65278b9bdce81fddb3ec54017
---------------- ---------------------------
       fail:runs  %reproduction    fail:runs
           |             |             |
           :30         100%          30:30    kunit.VCAP_API_DebugFS_Testsuite.vcap_api_show_admin_raw_test.fail

btw, the configs have below diff which seems reasonable to us.

--- /pkg/linux/x86_64-rhel-9.4-kunit/gcc-14/96f4aca8b6e7fd654c7fd3ce990e3326345c8f3b/.config    2026-03-18 11:03:48.295524180 +0800
+++ /pkg/linux/x86_64-rhel-9.4-kunit/gcc-14/fa65278b9bdce81fddb3ec54017ccc384fd42dca/.config    2026-03-18 11:04:47.609268479 +0800
@@ -530,6 +530,7 @@ CONFIG_ARCH_SUPPORTS_CRASH_HOTPLUG=y
 CONFIG_ARCH_HAS_GENERIC_CRASHKERNEL_RESERVATION=y
 CONFIG_PHYSICAL_START=0x1000000
 CONFIG_RELOCATABLE=y
+CONFIG_RELOCATABLE_PIE=y
 CONFIG_RANDOMIZE_BASE=y
 CONFIG_X86_NEED_RELOCS=y
 CONFIG_PHYSICAL_ALIGN=0x200000


below is full report FYI.


kernel test robot noticed "kunit.VCAP_API_DebugFS_Testsuite.vcap_api_show_admin_raw_test.fail" on:

commit: fa65278b9bdce81fddb3ec54017ccc384fd42dca ("x86: Use PIE codegen for the relocatable 64-bit kernel")
https://git.kernel.org/cgit/linux/kernel/git/ardb/linux.git x86-pie-v4-wip

in testcase: kunit
version: 
with following parameters:

	group: group-03



config: x86_64-rhel-9.4-kunit
compiler: gcc-14
test machine: 8 threads 1 sockets Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz (Haswell) with 16G memory

(please refer to attached dmesg/kmsg for entire log/backtrace)


If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-lkp/202603191529.cfc2cbbe-lkp@xxxxxxxxx


The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260319/202603191529.cfc2cbbe-lkp@xxxxxxxxx



kern  :err   : [  109.892567] [   T3126]     # vcap_api_show_admin_raw_test: EXPECTATION FAILED at drivers/net/ethernet/microchip/vcap/vcap_api_debugfs_kunit.c:377
                                             Expected test_expected == test_pr_buffer[0], but
                                                 test_expected == "  addr: 786, X6 rule, keysets: VCAP_KFS_MAC_ETYPE
                                         "
                                                 test_pr_buffer[0] == ""
kern  :info  : [  109.898412] [      T1]     not ok 2 vcap_api_show_admin_raw_test

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki