mm: kmsan: maintain KMSAN metadata for page operations

[sfrench/cifs-2.6.git] / arch / x86 / mm / ioremap.c

diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index 1ad0228f8ceb98032b6ea4e7fac0eb23e1c31d1f..78c5bc654cff5b054f1b3e63b21651e2e8163305 100644 (file)
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -17,6 +17,7 @@
 #include <linux/cc_platform.h>
 #include <linux/efi.h>
 #include <linux/pgtable.h>
+#include <linux/kmsan.h>
 
 #include <asm/set_memory.h>
 #include <asm/e820/api.h>
@@ -479,6 +480,8 @@ void iounmap(volatile void __iomem *addr)
                return;
        }
 
+       kmsan_iounmap_page_range((unsigned long)addr,
+               (unsigned long)addr + get_vm_area_size(p));
        memtype_free(p->phys_addr, p->phys_addr + get_vm_area_size(p));
 
        /* Finally remove it */