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tty fixes for 4.7-rc6 

Here are two tty fixes for some reported issues.  One resolves a crash
 in devpts, and the other resolves a problem with the fbcon cursor blink
 causing lockups.
 
 Both have been in linux-next with no reported problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty fixes from Greg KH:
 "Here are two tty fixes for some reported issues.  One resolves a crash
  in devpts, and the other resolves a problem with the fbcon cursor
  blink causing lockups.

  Both have been in linux-next with no reported problems"

* tag 'tty-4.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  devpts: fix null pointer dereference on failed memory allocation
  tty: vt: Fix soft lockup in fbcon cursor blink timer.
This commit is contained in:
Linus Torvalds 2016-07-01 09:20:12 -07:00
parent 0232b23d08 5353ed8dee
commit 756c0aeca3
2 changed files with 6 additions and 2 deletions
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7
drivers/tty/pty.c
View File

@ -667,8 +667,11 @@ static void pty_unix98_remove(struct tty_driver *driver, struct tty_struct *tty)
fsi = tty->driver_data;
else
fsi = tty->link->driver_data;
devpts_kill_index(fsi, tty->index);
devpts_release(fsi);
if (fsi) {
devpts_kill_index(fsi, tty->index);
devpts_release(fsi);
}
}
static const struct tty_operations ptm_unix98_ops = {

1
drivers/tty/vt/vt.c
View File

@ -750,6 +750,7 @@ static void visual_init(struct vc_data *vc, int num, int init)
vc->vc_complement_mask = 0;
vc->vc_can_do_color = 0;
vc->vc_panic_force_write = false;
vc->vc_cur_blink_ms = DEFAULT_CURSOR_BLINK_MS;
vc->vc_sw->con_init(vc, init);
if (!vc->vc_complement_mask)
vc->vc_complement_mask = vc->vc_can_do_color ? 0x7700 : 0x0800;