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mm/kasan: add null pointer access configuration

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Signed-off-by: yinshengkai <yinshengkai@xiaomi.com>
This commit is contained in:
yinshengkai 2024-08-20 16:03:14 +08:00 committed by Xiang Xiao
parent 38010adc02
commit e154c6d071
2 changed files with 8 additions and 0 deletions
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6
mm/Kconfig
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@ -288,6 +288,12 @@ config MM_KASAN_ALL
to check. Enabling this option will get image size increased
and performance decreased significantly.
config MM_KASAN_DISABLE_NULL_POINTER_CHECK
bool "Disable null pointer access check"
default n
---help---
This option enables KASan check null pointer access.
config MM_KASAN_DISABLE_READS_CHECK
bool "Disable reads check"
depends on MM_KASAN

2
mm/kasan/hook.c
View File

@ -173,10 +173,12 @@ static inline void kasan_check_report(FAR const void *addr, size_t size,
return;
}
#ifndef CONFIG_MM_KASAN_DISABLE_NULL_POINTER_CHECK
if (addr == NULL)
{
kasan_report(addr, size, is_write, return_address);
}
#endif
if (kasan_is_poisoned(addr, size))
{