* [linux-next:master 9381/10570] drivers/acpi/acpica/tbutils.c:181 acpi_tb_get_root_table_entry() error: uninitialized symbol 'address32'.
@ 2023-04-11 8:18 kernel test robot
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From: kernel test robot @ 2023-04-11 8:18 UTC (permalink / raw)
To: oe-kbuild; +Cc: lkp, Dan Carpenter
BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
CC: Linux Memory Management List <linux-mm@kvack.org>
TO: Tamir Duberstein <tamird@google.com>
CC: "Rafael J. Wysocki" <rjw@rjwysocki.net>
CC: Bob Moore <robert.moore@intel.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 009795d283d1f9f043e5a4ff97d4140cde17e2d3
commit: d56ba92b0ce659a235d8ed541c785fdb2f760449 [9381/10570] ACPICA: Avoid undefined behavior: load of misaligned address
:::::: branch date: 64 minutes ago
:::::: commit date: 5 days ago
config: ia64-randconfig-m031-20230410 (https://download.01.org/0day-ci/archive/20230411/202304111600.jRNc8maR-lkp@intel.com/config)
compiler: ia64-linux-gcc (GCC) 12.1.0
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Reported-by: Dan Carpenter <error27@gmail.com>
| Link: https://lore.kernel.org/r/202304111600.jRNc8maR-lkp@intel.com/
New smatch warnings:
drivers/acpi/acpica/tbutils.c:181 acpi_tb_get_root_table_entry() error: uninitialized symbol 'address32'.
Old smatch warnings:
drivers/acpi/acpica/tbutils.c:201 acpi_tb_get_root_table_entry() error: uninitialized symbol 'address64'.
vim +/address32 +181 drivers/acpi/acpica/tbutils.c
69ec87efa815d6 drivers/acpi/acpica/tbutils.c Lin Ming 2010-04-01 147
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 148 /*******************************************************************************
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 149 *
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 150 * FUNCTION: acpi_tb_get_root_table_entry
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 151 *
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 152 * PARAMETERS: table_entry - Pointer to the RSDT/XSDT table entry
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 153 * table_entry_size - sizeof 32 or 64 (RSDT or XSDT)
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 154 *
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 155 * RETURN: Physical address extracted from the root table
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 156 *
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 157 * DESCRIPTION: Get one root table entry. Handles 32-bit and 64-bit cases on
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 158 * both 32-bit and 64-bit platforms
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 159 *
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 160 * NOTE: acpi_physical_address is 32-bit on 32-bit platforms, 64-bit on
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 161 * 64-bit platforms.
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 162 *
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 163 ******************************************************************************/
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 164
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 165 static acpi_physical_address
67a119f990063f drivers/acpi/tables/tbutils.c Bob Moore 2008-06-10 166 acpi_tb_get_root_table_entry(u8 *table_entry, u32 table_entry_size)
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 167 {
d56ba92b0ce659 drivers/acpi/acpica/tbutils.c Tamir Duberstein 2023-04-05 168 u32 address32;
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 169 u64 address64;
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 170
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 171 /*
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 172 * Get the table physical address (32-bit for RSDT, 64-bit for XSDT):
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 173 * Note: Addresses are 32-bit aligned (not 64) in both RSDT and XSDT
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 174 */
671cc68dc61f02 drivers/acpi/acpica/tbutils.c Lv Zheng 2014-01-08 175 if (table_entry_size == ACPI_RSDT_ENTRY_SIZE) {
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 176 /*
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 177 * 32-bit platform, RSDT: Return 32-bit table entry
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 178 * 64-bit platform, RSDT: Expand 32-bit to 64-bit and return
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 179 */
d56ba92b0ce659 drivers/acpi/acpica/tbutils.c Tamir Duberstein 2023-04-05 180 ACPI_MOVE_32_TO_32(&address32, table_entry);
d56ba92b0ce659 drivers/acpi/acpica/tbutils.c Tamir Duberstein 2023-04-05 @181 return address32;
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 182 } else {
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 183 /*
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 184 * 32-bit platform, XSDT: Truncate 64-bit to 32-bit and return
ec41f193eadb63 drivers/acpi/acpica/tbutils.c Bob Moore 2009-02-18 185 * 64-bit platform, XSDT: Move (unaligned) 64-bit to local,
ec41f193eadb63 drivers/acpi/acpica/tbutils.c Bob Moore 2009-02-18 186 * return 64-bit
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 187 */
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 188 ACPI_MOVE_64_TO_64(&address64, table_entry);
a4bbb810dedaec drivers/acpi/tables/tbutils.c Bob Moore 2007-02-02 189
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0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
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2023-04-11 8:18 [linux-next:master 9381/10570] drivers/acpi/acpica/tbutils.c:181 acpi_tb_get_root_table_entry() error: uninitialized symbol 'address32' kernel test robot
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