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mm/kasan: support Disable Kasan read Panic 

Signed-off-by: yinshengkai <yinshengkai@xiaomi.com>
This commit is contained in:
yinshengkai 2024-05-14 15:58:32 +08:00 committed by Xiang Xiao
parent d365be9f2f
commit be86b03794
2 changed files with 34 additions and 8 deletions
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15
mm/Kconfig
View File

@ -320,14 +320,23 @@ config MM_KASAN_GLOBAL
KEEP ( *(. data. rel. local.. LASAN0))
}", used to extract data generated by the compiler
config MM_KASAN_DISABLE_PANIC
bool "Disable panic on kasan error"
config MM_KASAN_DISABLE_READ_PANIC
bool "Disable panic on kasan read error"
default n
---help---
This option disable panic on kasan read error. It will print error info
and continue to run.
config MM_KASAN_DISABLE_WRITE_PANIC
bool "Disable panic on kasan write error"
depends on MM_KASAN
default n
---help---
This option disable panic on kasan error. It will print error info
This option disable panic on kasan write error. It will print error info
and continue to run.
endif # MM_KASAN
config MM_UBSAN
bool "Undefined Behavior Sanitizer"
default n

25
mm/kasan/hook.c
View File

@ -71,6 +71,18 @@
kasan_check_report(addr, size, true, return_address(0)); \
}
#ifdef CONFIG_MM_KASAN_DISABLE_READ_PANIC
# define MM_KASAN_DISABLE_READ_PANIC 1
#else
# define MM_KASAN_DISABLE_READ_PANIC 0
#endif
#ifdef CONFIG_MM_KASAN_DISABLE_WRITE_PANIC
# define MM_KASAN_DISABLE_WRITE_PANIC 1
#else
# define MM_KASAN_DISABLE_WRITE_PANIC 0
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
@ -130,11 +142,16 @@ static void kasan_report(FAR const void *addr, size_t size,
addr, size, return_address);
kasan_show_memory(addr, size, 80);
#ifndef CONFIG_MM_KASAN_DISABLE_PANIC
PANIC();
#else
if ((is_write && MM_KASAN_DISABLE_WRITE_PANIC) ||
(!is_write && MM_KASAN_DISABLE_READ_PANIC))
{
dump_stack();
#endif
}
else
{
PANIC();
}
leave_critical_section(flags);
}