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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2012-07-24 12:52:04 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-08-10 12:54:27 -0700 |
| commit | dc6802a771e91050fb686dfeeb9de4c6c9cadb79 (patch) | |
| tree | 1fa2d7ffa108e53a2433e816a8195aec7d6050f0 | |
| parent | 4ac5d7050e4e4d63751e78fb152a274d05c08563 (diff) | |
tty: handle NULL parameters in free_tty_struct()
We sometimes pass NULL pointers to free_tty_struct(). One example where
it can happen is in the error handling code in pty_common_install().
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/tty/tty_io.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index 608749978df..6784aae210e 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -181,6 +181,8 @@ struct tty_struct *alloc_tty_struct(void) void free_tty_struct(struct tty_struct *tty) { + if (!tty) + return; if (tty->dev) put_device(tty->dev); kfree(tty->write_buf); |