This is a note to let you know that I've just added the patch titled
tty/vt: don't set font mappings on vc not supporting this
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
tty-vt-don-t-set-font-mappings-on-vc-not-supporting-this.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 9e326f78713a4421fe11afc2ddeac07698fac131 Mon Sep 17 00:00:00 2001
From: Imre Deak <imre.deak@xxxxxxxxx>
Date: Thu, 2 Oct 2014 16:34:31 +0300
Subject: tty/vt: don't set font mappings on vc not supporting this
From: Imre Deak <imre.deak@xxxxxxxxx>
commit 9e326f78713a4421fe11afc2ddeac07698fac131 upstream.
We can call this function for a dummy console that doesn't support
setting the font mapping, which will result in a null ptr BUG. So check
for this case and return error for consoles w/o font mapping support.
Reference: https://bugzilla.kernel.org/show_bug.cgi?id=59321
Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx>
Signed-off-by: Sudip Mukherjee <sudip@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/tty/vt/consolemap.c | 7 +++++++
1 file changed, 7 insertions(+)
--- a/drivers/tty/vt/consolemap.c
+++ b/drivers/tty/vt/consolemap.c
@@ -540,6 +540,12 @@ int con_set_unimap(struct vc_data *vc, u
/* Save original vc_unipagdir_loc in case we allocate a new one */
p = (struct uni_pagedir *)*vc->vc_uni_pagedir_loc;
+
+ if (!p) {
+ err = -EINVAL;
+
+ goto out_unlock;
+ }
if (p->readonly) {
console_unlock();
return -EIO;
@@ -633,6 +639,7 @@ int con_set_unimap(struct vc_data *vc, u
set_inverse_transl(vc, p, i); /* Update inverse translations */
set_inverse_trans_unicode(vc, p);
+out_unlock:
console_unlock();
return err;
}
Patches currently in stable-queue which might be from imre.deak@xxxxxxxxx are
queue-3.14/tty-vt-don-t-set-font-mappings-on-vc-not-supporting-this.patch
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html