diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c
index 035f8096b2..20b6fc2f6e 100644
--- a/accel/tcg/user-exec.c
+++ b/accel/tcg/user-exec.c
@@ -508,7 +508,7 @@ void page_set_flags(target_ulong start, target_ulong last, int flags)
     }
 
     if (!flags || reset) {
-        page_reset_target_data(start, last + 1);
+        page_reset_target_data(start, last);
         inval_tb |= pageflags_unset(start, last);
     }
     if (flags) {
@@ -814,15 +814,14 @@ typedef struct TargetPageDataNode {
 
 static IntervalTreeRoot targetdata_root;
 
-void page_reset_target_data(target_ulong start, target_ulong end)
+void page_reset_target_data(target_ulong start, target_ulong last)
 {
     IntervalTreeNode *n, *next;
-    target_ulong last;
 
     assert_memory_lock();
 
-    start = start & TARGET_PAGE_MASK;
-    last = TARGET_PAGE_ALIGN(end) - 1;
+    start &= TARGET_PAGE_MASK;
+    last |= ~TARGET_PAGE_MASK;
 
     for (n = interval_tree_iter_first(&targetdata_root, start, last),
          next = n ? interval_tree_iter_next(n, start, last) : NULL;
@@ -885,7 +884,7 @@ void *page_get_target_data(target_ulong address)
     return t->data[(page - region) >> TARGET_PAGE_BITS];
 }
 #else
-void page_reset_target_data(target_ulong start, target_ulong end) { }
+void page_reset_target_data(target_ulong start, target_ulong last) { }
 #endif /* TARGET_PAGE_DATA_SIZE */
 
 /* The softmmu versions of these helpers are in cputlb.c.  */
diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h
index a2662b1e83..64cb62dc54 100644
--- a/include/exec/cpu-all.h
+++ b/include/exec/cpu-all.h
@@ -277,7 +277,7 @@ int walk_memory_regions(void *, walk_memory_regions_fn);
 
 int page_get_flags(target_ulong address);
 void page_set_flags(target_ulong start, target_ulong last, int flags);
-void page_reset_target_data(target_ulong start, target_ulong end);
+void page_reset_target_data(target_ulong start, target_ulong last);
 int page_check_range(target_ulong start, target_ulong len, int flags);
 
 /**
diff --git a/linux-user/mmap.c b/linux-user/mmap.c
index 1d07ff5d2c..995146f60d 100644
--- a/linux-user/mmap.c
+++ b/linux-user/mmap.c
@@ -946,7 +946,7 @@ abi_long target_madvise(abi_ulong start, abi_ulong len_in, int advice)
         if (can_passthrough_madvise(start, end)) {
             ret = get_errno(madvise(g2h_untagged(start), len, advice));
             if ((advice == MADV_DONTNEED) && (ret == 0)) {
-                page_reset_target_data(start, start + len);
+                page_reset_target_data(start, start + len - 1);
             }
         }
     }