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mm/mm_heap: remove kasan in MM_ADD_BACKTRACE 

do simple copy to instead of memset and memcpy operation because
they have been instrumented, if you access the posion area,
the system will crash.

Signed-off-by: dongjiuzhu1 <dongjiuzhu1@xiaomi.com>
This commit is contained in:
dongjiuzhu1 2022-10-28 22:51:30 +08:00 committed by Xiang Xiao
parent 415a09115d
commit 7cd325f3be
2 changed files with 8 additions and 5 deletions
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7
arch/sim/src/sim/sim_backtrace.c
View File

@ -33,10 +33,12 @@
* Public Functions
****************************************************************************/
nosanitize_address
int up_backtrace(struct tcb_s *tcb, void **buffer, int size, int skip)
{
void *buf[skip + size];
int ret = 0;
int i;
if (tcb == running_task())
{
@ -49,7 +51,10 @@ int up_backtrace(struct tcb_s *tcb, void **buffer, int size, int skip)
}
ret -= skip;
memcpy(buffer, &buf[skip], ret * sizeof(void *));
for (i = 0; i < ret; i++)
{
buffer[i] = buf[skip + i];
}
return ret;
}

6
mm/mm_heap/mm.h
View File

@ -82,23 +82,21 @@
do \
{ \
FAR struct mm_allocnode_s *tmp = (FAR struct mm_allocnode_s *)(ptr); \
kasan_unpoison(tmp, SIZEOF_MM_ALLOCNODE); \
FAR struct tcb_s *tcb; \
tmp->pid = gettid(); \
tcb = nxsched_get_tcb(tmp->pid); \
if ((heap)->mm_procfs.backtrace || (tcb && tcb->flags & TCB_FLAG_HEAP_DUMP)) \
{ \
int n = backtrace(tmp->backtrace, CONFIG_MM_BACKTRACE); \
if (n < CONFIG_MM_BACKTRACE) \
while (n < CONFIG_MM_BACKTRACE) \
{ \
tmp->backtrace[n] = 0; \
tmp->backtrace[n++] = NULL; \
} \
} \
else \
{ \
tmp->backtrace[0] = 0; \
} \
kasan_poison(tmp, SIZEOF_MM_ALLOCNODE); \
} \
while (0)
#else