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Bugfix NULL pointer dereference during pagefault error printing

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This commit is contained in:
Sparchatus 2022-04-27 14:17:37 +00:00
parent e8fef8d87c
commit 08071e6858
1 changed files with 6 additions and 2 deletions
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8
lib/aos/paging.c
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@ -124,8 +124,12 @@ static void pt_exception_handler(enum exception_type type, int subtype,
break; break;
} }
} }
if (vaddr_reg == NULL || vaddr_reg->free) { if (vaddr_reg == NULL) {
debug_printf("[pt_exception_handler] page_addr = %x, base = %x, size = %x\n", page_addr, vaddr_reg->base, vaddr_reg->size); debug_printf("[pt_exception_handler] page_addr = 0x%x\n", page_addr);
USER_PANIC("[pt_exception_handler][ERROR] Page fault ouside valid virtual address space");
}
if (vaddr_reg->free) {
debug_printf("[pt_exception_handler] page_addr = 0x%x, base = 0x%x, size = 0x%x\n", page_addr, vaddr_reg->base, vaddr_reg->size);
USER_PANIC("[pt_exception_handler][ERROR] Page fault ouside allocated address space"); USER_PANIC("[pt_exception_handler][ERROR] Page fault ouside allocated address space");
} }
if (!vaddr_reg->heap) { if (!vaddr_reg->heap) {