linux-kernel - [Bug Report] selftests: arm64: build errors

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Date: Mon, 3 Jun 2024 18:28:16 +0500
From: Muhammad Usama Anjum <usama.anjum@...labora.com>
To: Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>,
 Shuah Khan <shuah@...nel.org>, linux-arm-kernel@...ts.infradead.org,
 linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
 Mark Brown <broonie@...nel.org>
Cc: Muhammad Usama Anjum <usama.anjum@...labora.com>
Subject: [Bug Report] selftests: arm64: build errors

Hi,

I'm trying to build arm64 selftests on next-20240529. I'm getting build
failures. Complete logs are attached while some snippets are as following:

gcc pac.c /pauth/pac_corruptor.o /pauth/helper.o -o /pauth/pac -Wall -O2 -g
-I/linux_mainline/tools/testing/selftests/  -I/linux_mainline/tools/include
-mbranch-protection=pac-ret  -march=armv8.2-a
In file included from pac.c:13:
../../kselftest_harness.h: In function ‘clone3_vfork’:
../../kselftest_harness.h:88:9: error: variable ‘args’ has initializer but
incomplete type
   88 |  struct clone_args args = {

  CC       check_prctl
check_prctl.c: In function ‘set_tagged_addr_ctrl’:
check_prctl.c:19:14: error: ‘PR_SET_TAGGED_ADDR_CTRL’ undeclared (first use
in this function)
   19 |  ret = prctl(PR_SET_TAGGED_ADDR_CTRL, val, 0, 0, 0);

gcc -mbranch-protection=standard -DBTI=1 -ffreestanding -Wall -Wextra -Wall
-O2 -g -I/linux_mainline/tools/testing/selftests/
-I/linux_mainline/tools/include  -c -o /bti/test-bti.o test.c
test.c: In function ‘handler’:
test.c:85:50: error: ‘PSR_BTYPE_MASK’ undeclared (first use in this
function); did you mean ‘PSR_MODE_MASK’?
   85 |  write(1, &"00011011"[((uc->uc_mcontext.pstate & PSR_BTYPE_MASK)

I've GCC 8 installed. I'm not expecting the errors because of a little
older compiler. Any more ideas about the failures?

-- 
BR,
Muhammad Usama Anjum
View attachment "build-log" of type "text/plain" (28997 bytes)