If we try to finit_module on a file sized 0 bytes vmalloc will scream and spit out a warning.
Since modules have to be bigger than 0 bytes anyways we can just check that beforehand and avoid the warning. Signed-off-by: Sasha Levin <[email protected]> --- kernel/module.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/kernel/module.c b/kernel/module.c index 250092c..2e1ce2e 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -2527,6 +2527,12 @@ static int copy_module_from_fd(int fd, struct load_info *info) err = -EFBIG; goto out; } + + if (stat.size == 0) { + err = -EINVAL; + goto out; + } + info->hdr = vmalloc(stat.size); if (!info->hdr) { err = -ENOMEM; -- 1.8.0.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
