3.4-stable review patch. If anyone has any objections, please let me know.
------------------ From: Stanislav Kozina <[email protected]> commit e9490e93c1978b6669f3e993caa3189be13ce459 upstream. Change the BUG_ON to WARN_ON and return in case of tty->read_buf==NULL. We want to track a couple of long standing reports of this but at the same time we can avoid killing the box. Signed-off-by: Stanislav Kozina <[email protected]> Signed-off-by: Alan Cox <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/tty/n_tty.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/tty/n_tty.c +++ b/drivers/tty/n_tty.c @@ -1727,7 +1727,8 @@ static ssize_t n_tty_read(struct tty_str do_it_again: - BUG_ON(!tty->read_buf); + if (WARN_ON(!tty->read_buf)) + return -EAGAIN; c = job_control(tty, file); if (c < 0) -- 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/
