linux-kernel - selftests: arm64: check_buffer_fill.c:94:93: warning: format '%lx' expects argument of type 'long unsigned int', but argument 3 has type 'char *' [-Wformat=]

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Message-ID: <CA+G9fYtukczdEnnqtD4jeHqDYwf30A2RpfK8knB6jaJSE+mobg@mail.gmail.com>
Date: Thu, 18 Apr 2024 18:04:32 +0530
From: Naresh Kamboju <naresh.kamboju@...aro.org>
To: "open list:KERNEL SELFTEST FRAMEWORK" <linux-kselftest@...r.kernel.org>, 
	open list <linux-kernel@...r.kernel.org>, 
	Linux ARM <linux-arm-kernel@...ts.infradead.org>, lkft-triage@...ts.linaro.org, 
	Linux Regressions <regressions@...ts.linux.dev>
Cc: Mark Brown <broonie@...nel.org>, Catalin Marinas <catalin.marinas@....com>, 
	Arnd Bergmann <arnd@...db.de>, Anders Roxell <anders.roxell@...aro.org>, 
	Dan Carpenter <dan.carpenter@...aro.org>
Subject: selftests: arm64: check_buffer_fill.c:94:93: warning: format '%lx'
 expects argument of type 'long unsigned int', but argument 3 has type 'char
 *' [-Wformat=]

The Linux next building selftests with clang and gcc-13 found these
build warnings.

Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>

Build log:
---------
PATH:
Reported build warnings noticed on following test files,
selftests/arm64/mte/
 * check_buffer_fill.c
 * mte_common_util.c

check_buffer_fill.c: In function 'check_buffer_underflow_by_byte':
check_buffer_fill.c:94:93: warning: format '%lx' expects argument of
type 'long unsigned int', but argument 3 has type 'char *' [-Wformat=]
   94 |                                 ksft_print_msg("Buffer is not
filled at index:%d of ptr:0x%lx\n",
      |
                           ~~^
      |
                             |
      |
                             long unsigned int
      |
                           %s
   95 |                                                 j, ptr);
      |                                                    ~~~
      |                                                    |
      |                                                    char *

<trim>

mte_common_util.c: In function 'mte_default_handler':
mte_common_util.c:41:101: warning: format '%lx' expects argument of
type 'long unsigned int', but argument 2 has type 'long long unsigned
int' [-Wformat=]
   41 |                                 ksft_print_msg("Got unexpected
SEGV_MTEAERR at pc=$lx, fault addr=%lx\n",
      |
                                   ~~^
      |
                                     |
      |
                                     long unsigned int
      |
                                   %llx
   42 |                                                ((ucontext_t
*)uc)->uc_mcontext.pc,
      |
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |
               |
      |
               long long unsigned int
mte_common_util.c:41:48: warning: too many arguments for format
[-Wformat-extra-args]
   41 |                                 ksft_print_msg("Got unexpected
SEGV_MTEAERR at pc=$lx, fault addr=%lx\n",
      |
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Steps to reproduce:
---
tuxmake --runtime podman --target-arch arm64 --toolchain clang-nightly \
  --kconfig https://storage.tuxsuite.com/public/linaro/lkft/builds/2fDW3nAXzFH2GOEle3S3MVC53A9/config
\
  LLVM=1 LLVM_IAS=1 debugkernel dtbs dtbs-legacy headers kernel
kselftest modules


tuxmake --runtime podman --target-arch arm64 --toolchain gcc-13 \
  --kconfig https://storage.tuxsuite.com/public/linaro/lkft/builds/2fDW3wG8BqWxf0afUI5f4wkArPi/config
\
  debugkernel dtbs dtbs-legacy headers kernel kselftest modules


Links:
 - https://storage.tuxsuite.com/public/linaro/lkft/builds/2fDW3nAXzFH2GOEle3S3MVC53A9/
 - https://storage.tuxsuite.com/public/linaro/lkft/builds/2fDW3wG8BqWxf0afUI5f4wkArPi/

--
Linaro LKFT
https://lkft.linaro.org