Fix overflow check in generic_seek

Fixes ish-app#1044
kenardi · Nov 13, 2020 · 0728c5e · 0728c5e
1 parent 1e8f71b
commit 0728c5e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/fs/generic.c b/fs/generic.c
@@ -293,7 +293,7 @@ int generic_seek(struct fd *fd, off_t_ off, int whence, size_t size) {
     if (whence == LSEEK_SET) {
         fd->offset = off;
     } else if (whence == LSEEK_CUR) {
-        if (!__builtin_add_overflow(new_off, off, &new_off) || new_off < 0)
+        if (__builtin_add_overflow(new_off, off, &new_off) || new_off < 0)
             return _EINVAL;
         fd->offset = new_off;
     } else if (whence == LSEEK_END) {