x86: fix leak un ioremap_page_range() failure



Jan Beulich noticed it during code review that if a driver's ioremap()
fails (say due to -ENOMEM) then we might leak the struct vm_area.

Free it properly.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent f2dbe03d

arch/x86/mm/ioremap.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -162,7 +162,7 @@ static void __iomem *__ioremap(unsigned long phys_addr, unsigned long size,
		area->phys_addr = phys_addr;
		vaddr = (unsigned long) area->addr;
		if (ioremap_page_range(vaddr, vaddr + size, phys_addr, prot)) {
		remove_vm_area((void *)(vaddr & PAGE_MASK));
		free_vm_area(area);
		return NULL;
		}