X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?p=pintos-anon;a=blobdiff_plain;f=src%2Fthreads%2Fmalloc.c;h=ba39d1d926f496115a8cf703265808fa3813f3ea;hp=afa487ccca6bc01ea4a41c4e257311e305c782a6;hb=3fc16f6e9abc98a3bd5427eb210669860609a224;hpb=540641a18c65c05df757ced2f225ade578da15aa

diff --git a/src/threads/malloc.c b/src/threads/malloc.c
index afa487c..ba39d1d 100644
--- a/src/threads/malloc.c
+++ b/src/threads/malloc.c
@@ -44,7 +44,7 @@ malloc_init (void)
 static struct arena *
 slot_to_arena (struct slot *s)
 {
-  return (struct arena *) ((uint32_t) s & (NBPG - 1));
+  return (struct arena *) ((uint32_t) s & ~(NBPG - 1));
 }
 
 static void *