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Add check for stack_min_addr in bound check with hardware trap (#1166)

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Add return value check for os_thread_get_stack_boundary before touch_pages
in the initialization of memory access bound check with hardware trap.
This commit is contained in:
Namhyeon Go 2022-05-12 13:23:35 +09:00 committed by GitHub
parent 3d1dad7792
commit 0993601d55
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1 changed files with 3 additions and 0 deletions
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3
core/shared/platform/common/posix/posix_thread.c
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@ -411,6 +411,9 @@ init_stack_guard_pages()
uint32 guard_page_count = STACK_OVERFLOW_CHECK_GUARD_PAGE_COUNT; uint32 guard_page_count = STACK_OVERFLOW_CHECK_GUARD_PAGE_COUNT;
uint8 *stack_min_addr = os_thread_get_stack_boundary(); uint8 *stack_min_addr = os_thread_get_stack_boundary();
if (stack_min_addr == NULL)
return false;
/* Touch each stack page to ensure that it has been mapped: the OS /* Touch each stack page to ensure that it has been mapped: the OS
may lazily grow the stack mapping as a guard page is hit. */ may lazily grow the stack mapping as a guard page is hit. */
(void)touch_pages(stack_min_addr, page_size); (void)touch_pages(stack_min_addr, page_size);