From: Jann Horn jannh@google.com
commit 52f6f9d74f31078964ca1574f7bb612da7877ac8 upstream.
As sparse points out, these two copy_from_user() should actually be copy_to_user().
Fixes: 229b53c9bf4e ("take floppy compat ioctls to sodding floppy.c") Cc: stable@vger.kernel.org Acked-by: Alexander Popov alex.popov@linux.com Reviewed-by: Mukesh Ojha mojha@codeaurora.org Signed-off-by: Jann Horn jannh@google.com Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/block/floppy.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -3786,7 +3786,7 @@ static int compat_getdrvprm(int drive, v.native_format = UDP->native_format; mutex_unlock(&floppy_mutex);
- if (copy_from_user(arg, &v, sizeof(struct compat_floppy_drive_params))) + if (copy_to_user(arg, &v, sizeof(struct compat_floppy_drive_params))) return -EFAULT; return 0; } @@ -3822,7 +3822,7 @@ static int compat_getdrvstat(int drive, v.bufblocks = UDRS->bufblocks; mutex_unlock(&floppy_mutex);
- if (copy_from_user(arg, &v, sizeof(struct compat_floppy_drive_struct))) + if (copy_to_user(arg, &v, sizeof(struct compat_floppy_drive_struct))) return -EFAULT; return 0; Eintr: