Re: [PATCH] tty: Fix unreasonable write toward closed pty.
From: Alan Cox <hidden>
Date: 2012-12-19 19:06:17
Also in:
lkml
quoted hunk ↗ jump to hunk
diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c index a82b399..1ce1362 100644 --- a/drivers/tty/pty.c +++ b/drivers/tty/pty.c@@ -116,6 +116,8 @@ static int pty_space(struct tty_struct *to) static int pty_write(struct tty_struct *tty, const unsigned char *buf, int c) { + if (test_bit(TTY_OTHER_CLOSED, &tty->flags)) + return -EIO;
The flag can change between the test and ny further code being executed ? Alan