diff options
| author | Jiri Slaby <jslaby@suse.cz> | 2012-08-07 21:47:26 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-08-10 13:27:50 -0700 |
| commit | 6f9ea7ad7be10dca95e7ca57221c5f81be48d852 (patch) | |
| tree | 83749543072a6c0194ae4f065c023f6be2646185 /drivers/tty/pty.c | |
| parent | 090abf7b91645c1936ba959b1e1cd6d09110779c (diff) | |
TTY: pty, stop passing NULL to free_tty_struct
In case alloc_tty_struct fails in pty_common_install, we pass NULL to
free_tty_struct. This is invalid as the function is not ready to cope
with that. And even if it was, it is not nice to do that anyway.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/pty.c')
| -rw-r--r-- | drivers/tty/pty.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c index 4399f1dbd13..d9ea9e2c9ec 100644 --- a/drivers/tty/pty.c +++ b/drivers/tty/pty.c @@ -303,9 +303,11 @@ static int pty_common_install(struct tty_driver *driver, struct tty_struct *tty, int retval = -ENOMEM; o_tty = alloc_tty_struct(); + if (!o_tty) + goto err; ports[0] = kmalloc(sizeof **ports, GFP_KERNEL); ports[1] = kmalloc(sizeof **ports, GFP_KERNEL); - if (!o_tty || !ports[0] || !ports[1]) + if (!ports[0] || !ports[1]) goto err_free_tty; if (!try_module_get(driver->other->owner)) { /* This cannot in fact currently happen */ @@ -360,6 +362,7 @@ err_free_tty: kfree(ports[0]); kfree(ports[1]); free_tty_struct(o_tty); +err: return retval; } |