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| author |   Vasily Gorbik <gor@linux.ibm.com> | 2025-01-27 15:23:02 +0100 |
|---|---|---|
| committer |   Alexander Gordeev <agordeev@linux.ibm.com> | 2025-01-28 11:28:48 +0100 |
| commit | b05d66c882994fb63e8435bf64f262ef44c51874 (patch) | |
| tree | 8989f6acbf055c9348c796279652973353d85853 | |
| parent | s390: Add '-std=gnu11' to decompressor and purgatory CFLAGS (diff) | |
| download | wireguard-linux-b05d66c882994fb63e8435bf64f262ef44c51874.tar.xz wireguard-linux-b05d66c882994fb63e8435bf64f262ef44c51874.zip | |
s390/vmem: Fix null-pointer-arithmetic warning in vmem_map_init()
Fixes the following clang warning introduced by commit d7bebcb4a898
("s390: Optimize __pa/__va when RANDOMIZE_IDENTITY_BASE is off")
arch/s390/mm/vmem.c:665:36: warning: performing pointer arithmetic on
a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
665 | __set_memory_4k(__va(0), __va(0) + ident_map_size);
| ~~~~~~~ ^
Fixes: d7bebcb4a898 ("s390: Optimize __pa/__va when RANDOMIZE_IDENTITY_BASE is off")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202501270309.HzsVNo3o-lkp@intel.com/
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Diffstat (limited to '')
| -rw-r--r-- | arch/s390/mm/vmem.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c index 7c684c54e721..8ead999e340b 100644 --- a/arch/s390/mm/vmem.c +++ b/arch/s390/mm/vmem.c @@ -662,7 +662,7 @@ void __init vmem_map_init(void) if (!static_key_enabled(&cpu_has_bear)) set_memory_x(0, 1); if (debug_pagealloc_enabled()) - __set_memory_4k(__va(0), __va(0) + ident_map_size); + __set_memory_4k(__va(0), absolute_pointer(__va(0)) + ident_map_size); pr_info("Write protected kernel read-only data: %luk\n", (unsigned long)(__end_rodata - _stext) >> 10); } |