From 7483e5d420d9d5aa1732c5efb0da59e095a8b24e Mon Sep 17 00:00:00 2001 From: Dmitry Vyukov Date: Fri, 8 Sep 2017 16:17:35 -0700 Subject: kcov: support compat processes Support compat processes in KCOV by providing compat_ioctl callback. Compat mode uses the same ioctl callback: we have 2 commands that do not use the argument and 1 that already checks that the arg does not overflow INT_MAX. This allows to use KCOV-guided fuzzing in compat processes. Link: http://lkml.kernel.org/r/20170823100553.55812-1-dvyukov@google.com Signed-off-by: Dmitry Vyukov Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/kcov.c | 1 + 1 file changed, 1 insertion(+) (limited to 'kernel/kcov.c') diff --git a/kernel/kcov.c b/kernel/kcov.c index cd771993f96f..3f693a0f6f3e 100644 --- a/kernel/kcov.c +++ b/kernel/kcov.c @@ -270,6 +270,7 @@ static long kcov_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) static const struct file_operations kcov_fops = { .open = kcov_open, .unlocked_ioctl = kcov_ioctl, + .compat_ioctl = kcov_ioctl, .mmap = kcov_mmap, .release = kcov_close, }; -- cgit v1.2.3