3.13.11-ckt12 -stable review patch. If anyone has any objections, please let me know.
------------------ From: Imre Deak <imre.d...@intel.com> 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.d...@intel.com> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> [ kamal: backport to 3.13-stable: context ] Signed-off-by: Kamal Mostafa <ka...@canonical.com> --- drivers/tty/vt/consolemap.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/tty/vt/consolemap.c b/drivers/tty/vt/consolemap.c index 2978ca5..d0a3e23 100644 --- a/drivers/tty/vt/consolemap.c +++ b/drivers/tty/vt/consolemap.c @@ -540,6 +540,13 @@ int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list) /* 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 +640,7 @@ int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list) set_inverse_transl(vc, p, i); /* Update inverse translations */ set_inverse_trans_unicode(vc, p); +out_unlock: console_unlock(); return err; } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
