Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 02f14c79 authored by Peter Hurley's avatar Peter Hurley Committed by Greg Kroah-Hartman
Browse files

ia64: Pin controlling tty for unaligned fault message 



Prevent destruction of the controlling tty before tty_write_message()
can determine if the tty is safe to use.

Signed-off-by: default avatarPeter Hurley <peter@hurleysoftware.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 7f71b2c1

arch/ia64/kernel/unaligned.c

+5 −2
Original line number Diff line number Diff line
@@ -1336,8 +1336,11 @@ ia64_handle_unaligned (unsigned long ifa, struct pt_regs *regs) 
			 * Don't call tty_write_message() if we're in the kernel; we might

			 * be holding locks...

			 */

			if (user_mode(regs))

				tty_write_message(current->signal->tty, buf);

			if (user_mode(regs)) {

				struct tty_struct *tty = get_current_tty();

				tty_write_message(tty, buf);

				tty_kref_put(tty);

			}

			buf[len-1] = '\0';	/* drop '\r' */

			/* watch for command names containing %s */

			printk(KERN_WARNING "%s", buf);