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authorPeter Hurley <peter@hurleysoftware.com>2016-01-09 21:13:46 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-01-27 14:28:20 -0800
commitc8b710b3e4348119924051551b836c94835331b1 (patch)
tree5315047eaf79a1e2db862ab4502569b42b2b9136 /drivers/tty/pty.c
parentf4f9edcf9b5289ed96113e79fa65a7bf27ecb096 (diff)
tty: Fix ldisc leak in failed tty_init_dev()
release_tty() leaks the ldisc instance when called directly (rather than when releasing the file descriptor from tty_release()). Since tty_ldisc_release() clears tty->ldisc, releasing the ldisc instance at tty teardown if tty->ldisc is non-null is not in danger of double-releasing the ldisc. Remove deinitialize_tty_struct() now that free_tty_struct() always performs the tty_ldisc_deinit(). Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/pty.c')
-rw-r--r--drivers/tty/pty.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c
index b3110040164a..8cbe802bff1d 100644
--- a/drivers/tty/pty.c
+++ b/drivers/tty/pty.c
@@ -408,7 +408,7 @@ static int pty_common_install(struct tty_driver *driver, struct tty_struct *tty,
the easy way .. */
retval = tty_init_termios(tty);
if (retval)
- goto err_deinit_tty;
+ goto err_free_tty;
retval = tty_init_termios(o_tty);
if (retval)
@@ -447,8 +447,7 @@ static int pty_common_install(struct tty_driver *driver, struct tty_struct *tty,
err_free_termios:
if (legacy)
tty_free_termios(tty);
-err_deinit_tty:
- deinitialize_tty_struct(o_tty);
+err_free_tty:
free_tty_struct(o_tty);
err_put_module:
module_put(driver->other->owner);

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