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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2025-04-25 11:51:21 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2025-04-25 11:51:21 +0300
commit7f0020417b7bceaa10cf9e1efe2b3f5c554d972e (patch)
tree69d11757acfb4bacfb5f82f6f0fbf04339b3cd38 /mm/gup.c
parent616e143c9fd88562b4d2cb235834c620fe65ba22 (diff)
parentea061bad207e1ba693b5488ba64c663f7ca03f50 (diff)
downloadlinux-rolling-stable.tar.xz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'mm/gup.c')
-rw-r--r--mm/gup.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/gup.c b/mm/gup.c
index 61e751baf862..4ededc113358 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -2210,8 +2210,8 @@ size_t fault_in_safe_writeable(const char __user *uaddr, size_t size)
} while (start != end);
mmap_read_unlock(mm);
- if (size > (unsigned long)uaddr - start)
- return size - ((unsigned long)uaddr - start);
+ if (size > start - (unsigned long)uaddr)
+ return size - (start - (unsigned long)uaddr);
return 0;
}
EXPORT_SYMBOL(fault_in_safe_writeable);