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Date: Sun, 12 Jun 2022 00:12:22 +0800
From: kernel test robot <lkp@...el.com>
To: Jonathan McDowell <noodles@...com>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
Dave Hansen <dave.hansen@...ux.intel.com>,
Mimi Zohar <zohar@...ux.ibm.com>, Baoquan He <bhe@...hat.com>
Subject: [daveh-devel:testme 2/2] drivers/of/kexec.c:126:5: warning: no
previous prototype for 'ima_get_kexec_buffer'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/daveh/devel.git testme
head: a217a1ebac788fd28ccf79499e9e12e5519d70b7
commit: a217a1ebac788fd28ccf79499e9e12e5519d70b7 [2/2] x86/kexec: Carry forward IMA measurement log on kexec
config: parisc-randconfig-r023-20220611 (https://download.01.org/0day-ci/archive/20220612/202206120045.FwSlNqBY-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 11.3.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://git.kernel.org/pub/scm/linux/kernel/git/daveh/devel.git/commit/?id=a217a1ebac788fd28ccf79499e9e12e5519d70b7
git remote add daveh-devel https://git.kernel.org/pub/scm/linux/kernel/git/daveh/devel.git
git fetch --no-tags daveh-devel testme
git checkout a217a1ebac788fd28ccf79499e9e12e5519d70b7
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=parisc SHELL=/bin/bash drivers/of/
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
>> drivers/of/kexec.c:126:5: warning: no previous prototype for 'ima_get_kexec_buffer' [-Wmissing-prototypes]
126 | int ima_get_kexec_buffer(void **addr, size_t *size)
| ^~~~~~~~~~~~~~~~~~~~
>> drivers/of/kexec.c:153:5: warning: no previous prototype for 'ima_free_kexec_buffer' [-Wmissing-prototypes]
153 | int ima_free_kexec_buffer(void)
| ^~~~~~~~~~~~~~~~~~~~~
vim +/ima_get_kexec_buffer +126 drivers/of/kexec.c
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 118
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 119 /**
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 120 * ima_get_kexec_buffer - get IMA buffer from the previous kernel
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 121 * @addr: On successful return, set to point to the buffer contents.
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 122 * @size: On successful return, set to the buffer size.
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 123 *
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 124 * Return: 0 on success, negative errno on error.
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 125 */
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 @126 int ima_get_kexec_buffer(void **addr, size_t *size)
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 127 {
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 128 int ret, len;
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 129 unsigned long tmp_addr;
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 130 size_t tmp_size;
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 131 const void *prop;
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 132
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 133 if (!IS_ENABLED(CONFIG_HAVE_IMA_KEXEC))
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 134 return -ENOTSUPP;
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 135
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 136 prop = of_get_property(of_chosen, "linux,ima-kexec-buffer", &len);
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 137 if (!prop)
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 138 return -ENOENT;
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 139
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 140 ret = do_get_kexec_buffer(prop, len, &tmp_addr, &tmp_size);
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 141 if (ret)
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 142 return ret;
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 143
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 144 *addr = __va(tmp_addr);
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 145 *size = tmp_size;
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 146
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 147 return 0;
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 148 }
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 149
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 150 /**
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 151 * ima_free_kexec_buffer - free memory used by the IMA buffer
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 152 */
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 @153 int ima_free_kexec_buffer(void)
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 154 {
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 155 int ret;
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 156 unsigned long addr;
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 157 size_t size;
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 158 struct property *prop;
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 159
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 160 if (!IS_ENABLED(CONFIG_HAVE_IMA_KEXEC))
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 161 return -ENOTSUPP;
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 162
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 163 prop = of_find_property(of_chosen, "linux,ima-kexec-buffer", NULL);
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 164 if (!prop)
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 165 return -ENOENT;
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 166
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 167 ret = do_get_kexec_buffer(prop->value, prop->length, &addr, &size);
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 168 if (ret)
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 169 return ret;
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 170
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 171 ret = of_remove_property(of_chosen, prop);
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 172 if (ret)
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 173 return ret;
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 174
3ecc68349bbab6 Mike Rapoport 2021-11-05 175 return memblock_phys_free(addr, size);
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 176 }
fee3ff99bc6760 Lakshmi Ramasubramanian 2021-02-21 177
:::::: The code at line 126 was first introduced by commit
:::::: fee3ff99bc67604fba77f19da0106f3ec52b1956 powerpc: Move arch independent ima kexec functions to drivers/of/kexec.c
:::::: TO: Lakshmi Ramasubramanian <nramas@...ux.microsoft.com>
:::::: CC: Rob Herring <robh@...nel.org>
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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