[OE-core] [CONSOLIDATED PULL 8/9] xserver-kdrive: Fix X server on PowerPC when built with GCC 4.7.x
Saul Wold
sgw at linux.intel.com
Fri May 18 14:18:18 UTC 2012
From: Gary Thomas <gary at mlbassoc.com>
Newer versions of GCC uncovered illegal code practice which can cause
runtime failures in the Xext/xace.c code. This problem has been fixed upstream:
http://cgit.freedesktop.org/xorg/xserver/patch/Xext/xace.c?id=6dae7f3792611aace1df0cca63bf50c50d93de43
Subject: xace: Invalid reference to out-of-scope data.
Incorporate this patch into the recipe, with a PR bump.
Signed-off-by: Gary Thomas <gary at mlbassoc.com>
---
.../fix-bogus-stack-variables.patch | 233 ++++++++++++++++++++
.../xorg-xserver/xserver-kdrive_1.7.99.2.bb | 3 +-
2 files changed, 235 insertions(+), 1 deletions(-)
create mode 100644 meta/recipes-graphics/xorg-xserver/xserver-kdrive-1.7.99.2/fix-bogus-stack-variables.patch
diff --git a/meta/recipes-graphics/xorg-xserver/xserver-kdrive-1.7.99.2/fix-bogus-stack-variables.patch b/meta/recipes-graphics/xorg-xserver/xserver-kdrive-1.7.99.2/fix-bogus-stack-variables.patch
new file mode 100644
index 0000000..b4e293f
--- /dev/null
+++ b/meta/recipes-graphics/xorg-xserver/xserver-kdrive-1.7.99.2/fix-bogus-stack-variables.patch
@@ -0,0 +1,233 @@
+From 6dae7f3792611aace1df0cca63bf50c50d93de43 Mon Sep 17 00:00:00 2001
+From: Chris Wilson <chris at chris-wilson.co.uk>
+Date: Tue, 10 Aug 2010 18:30:20 +0000
+Subject: xace: Invalid reference to out-of-scope data.
+
+The callback data passed by reference to the hook was allocated on stack
+within the scope of the case statement. The compiler is free to reuse
+any of that stack space whilst making the function call so we may end up
+passing garbage into the callback.
+
+References:
+
+ Bug 18451 - Xorg server 1.5.2 SEGV during XFixesGetCursorImage()
+ https://bugs.freedesktop.org/show_bug.cgi?id=18451
+
+v2: Drop the unrelated hunk that snuck in when ammending the commit
+message.
+
+Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
+Reviewed-by: Alan Coopersmith <alan.coopersmith at oracle.com>
+Signed-off-by: Keith Packard <keithp at keithp.com>
+
+Upstream-Status: accepted
+---
+(limited to 'Xext/xace.c')
+
+diff --git a/Xext/xace.c b/Xext/xace.c
+index e10d837..c757cad 100644
+--- a/Xext/xace.c
++++ b/Xext/xace.c
+@@ -87,7 +87,18 @@ void XaceHookAuditEnd(ClientPtr ptr, int result)
+ */
+ int XaceHook(int hook, ...)
+ {
+- pointer calldata; /* data passed to callback */
++ union {
++ XaceResourceAccessRec res;
++ XaceDeviceAccessRec dev;
++ XaceSendAccessRec send;
++ XaceReceiveAccessRec recv;
++ XaceClientAccessRec client;
++ XaceExtAccessRec ext;
++ XaceServerAccessRec server;
++ XaceScreenAccessRec screen;
++ XaceAuthAvailRec auth;
++ XaceKeyAvailRec key;
++ } u;
+ int *prv = NULL; /* points to return value from callback */
+ va_list ap; /* argument list */
+ va_start(ap, hook);
+@@ -99,117 +110,86 @@ int XaceHook(int hook, ...)
+ */
+ switch (hook)
+ {
+- case XACE_RESOURCE_ACCESS: {
+- XaceResourceAccessRec rec;
+- rec.client = va_arg(ap, ClientPtr);
+- rec.id = va_arg(ap, XID);
+- rec.rtype = va_arg(ap, RESTYPE);
+- rec.res = va_arg(ap, pointer);
+- rec.ptype = va_arg(ap, RESTYPE);
+- rec.parent = va_arg(ap, pointer);
+- rec.access_mode = va_arg(ap, Mask);
+- rec.status = Success; /* default allow */
+- calldata = &rec;
+- prv = &rec.status;
++ case XACE_RESOURCE_ACCESS:
++ u.res.client = va_arg(ap, ClientPtr);
++ u.res.id = va_arg(ap, XID);
++ u.res.rtype = va_arg(ap, RESTYPE);
++ u.res.res = va_arg(ap, pointer);
++ u.res.ptype = va_arg(ap, RESTYPE);
++ u.res.parent = va_arg(ap, pointer);
++ u.res.access_mode = va_arg(ap, Mask);
++ u.res.status = Success; /* default allow */
++ prv = &u.res.status;
+ break;
+- }
+- case XACE_DEVICE_ACCESS: {
+- XaceDeviceAccessRec rec;
+- rec.client = va_arg(ap, ClientPtr);
+- rec.dev = va_arg(ap, DeviceIntPtr);
+- rec.access_mode = va_arg(ap, Mask);
+- rec.status = Success; /* default allow */
+- calldata = &rec;
+- prv = &rec.status;
++ case XACE_DEVICE_ACCESS:
++ u.dev.client = va_arg(ap, ClientPtr);
++ u.dev.dev = va_arg(ap, DeviceIntPtr);
++ u.dev.access_mode = va_arg(ap, Mask);
++ u.dev.status = Success; /* default allow */
++ prv = &u.dev.status;
+ break;
+- }
+- case XACE_SEND_ACCESS: {
+- XaceSendAccessRec rec;
+- rec.client = va_arg(ap, ClientPtr);
+- rec.dev = va_arg(ap, DeviceIntPtr);
+- rec.pWin = va_arg(ap, WindowPtr);
+- rec.events = va_arg(ap, xEventPtr);
+- rec.count = va_arg(ap, int);
+- rec.status = Success; /* default allow */
+- calldata = &rec;
+- prv = &rec.status;
++ case XACE_SEND_ACCESS:
++ u.send.client = va_arg(ap, ClientPtr);
++ u.send.dev = va_arg(ap, DeviceIntPtr);
++ u.send.pWin = va_arg(ap, WindowPtr);
++ u.send.events = va_arg(ap, xEventPtr);
++ u.send.count = va_arg(ap, int);
++ u.send.status = Success; /* default allow */
++ prv = &u.send.status;
+ break;
+- }
+- case XACE_RECEIVE_ACCESS: {
+- XaceReceiveAccessRec rec;
+- rec.client = va_arg(ap, ClientPtr);
+- rec.pWin = va_arg(ap, WindowPtr);
+- rec.events = va_arg(ap, xEventPtr);
+- rec.count = va_arg(ap, int);
+- rec.status = Success; /* default allow */
+- calldata = &rec;
+- prv = &rec.status;
++ case XACE_RECEIVE_ACCESS:
++ u.recv.client = va_arg(ap, ClientPtr);
++ u.recv.pWin = va_arg(ap, WindowPtr);
++ u.recv.events = va_arg(ap, xEventPtr);
++ u.recv.count = va_arg(ap, int);
++ u.recv.status = Success; /* default allow */
++ prv = &u.recv.status;
+ break;
+- }
+- case XACE_CLIENT_ACCESS: {
+- XaceClientAccessRec rec;
+- rec.client = va_arg(ap, ClientPtr);
+- rec.target = va_arg(ap, ClientPtr);
+- rec.access_mode = va_arg(ap, Mask);
+- rec.status = Success; /* default allow */
+- calldata = &rec;
+- prv = &rec.status;
++ case XACE_CLIENT_ACCESS:
++ u.client.client = va_arg(ap, ClientPtr);
++ u.client.target = va_arg(ap, ClientPtr);
++ u.client.access_mode = va_arg(ap, Mask);
++ u.client.status = Success; /* default allow */
++ prv = &u.client.status;
+ break;
+- }
+- case XACE_EXT_ACCESS: {
+- XaceExtAccessRec rec;
+- rec.client = va_arg(ap, ClientPtr);
+- rec.ext = va_arg(ap, ExtensionEntry*);
+- rec.access_mode = DixGetAttrAccess;
+- rec.status = Success; /* default allow */
+- calldata = &rec;
+- prv = &rec.status;
++ case XACE_EXT_ACCESS:
++ u.ext.client = va_arg(ap, ClientPtr);
++ u.ext.ext = va_arg(ap, ExtensionEntry*);
++ u.ext.access_mode = DixGetAttrAccess;
++ u.ext.status = Success; /* default allow */
++ prv = &u.ext.status;
+ break;
+- }
+- case XACE_SERVER_ACCESS: {
+- XaceServerAccessRec rec;
+- rec.client = va_arg(ap, ClientPtr);
+- rec.access_mode = va_arg(ap, Mask);
+- rec.status = Success; /* default allow */
+- calldata = &rec;
+- prv = &rec.status;
++ case XACE_SERVER_ACCESS:
++ u.server.client = va_arg(ap, ClientPtr);
++ u.server.access_mode = va_arg(ap, Mask);
++ u.server.status = Success; /* default allow */
++ prv = &u.server.status;
+ break;
+- }
+ case XACE_SCREEN_ACCESS:
+- case XACE_SCREENSAVER_ACCESS: {
+- XaceScreenAccessRec rec;
+- rec.client = va_arg(ap, ClientPtr);
+- rec.screen = va_arg(ap, ScreenPtr);
+- rec.access_mode = va_arg(ap, Mask);
+- rec.status = Success; /* default allow */
+- calldata = &rec;
+- prv = &rec.status;
++ case XACE_SCREENSAVER_ACCESS:
++ u.screen.client = va_arg(ap, ClientPtr);
++ u.screen.screen = va_arg(ap, ScreenPtr);
++ u.screen.access_mode = va_arg(ap, Mask);
++ u.screen.status = Success; /* default allow */
++ prv = &u.screen.status;
+ break;
+- }
+- case XACE_AUTH_AVAIL: {
+- XaceAuthAvailRec rec;
+- rec.client = va_arg(ap, ClientPtr);
+- rec.authId = va_arg(ap, XID);
+- calldata = &rec;
++ case XACE_AUTH_AVAIL:
++ u.auth.client = va_arg(ap, ClientPtr);
++ u.auth.authId = va_arg(ap, XID);
+ break;
+- }
+- case XACE_KEY_AVAIL: {
+- XaceKeyAvailRec rec;
+- rec.event = va_arg(ap, xEventPtr);
+- rec.keybd = va_arg(ap, DeviceIntPtr);
+- rec.count = va_arg(ap, int);
+- calldata = &rec;
++ case XACE_KEY_AVAIL:
++ u.key.event = va_arg(ap, xEventPtr);
++ u.key.keybd = va_arg(ap, DeviceIntPtr);
++ u.key.count = va_arg(ap, int);
+ break;
+- }
+- default: {
++ default:
+ va_end(ap);
+ return 0; /* unimplemented hook number */
+- }
+ }
+ va_end(ap);
+
+ /* call callbacks and return result, if any. */
+- CallCallbacks(&XaceHooks[hook], calldata);
++ CallCallbacks(&XaceHooks[hook], &u);
+ return prv ? *prv : Success;
+ }
+
+--
+cgit v0.9.0.2-2-gbebe
diff --git a/meta/recipes-graphics/xorg-xserver/xserver-kdrive_1.7.99.2.bb b/meta/recipes-graphics/xorg-xserver/xserver-kdrive_1.7.99.2.bb
index 360a0f3..d90dc25 100644
--- a/meta/recipes-graphics/xorg-xserver/xserver-kdrive_1.7.99.2.bb
+++ b/meta/recipes-graphics/xorg-xserver/xserver-kdrive_1.7.99.2.bb
@@ -7,7 +7,7 @@ RDEPENDS_${PN} += "xkeyboard-config"
EXTRA_OECONF += "--disable-glx"
PE = "1"
-PR = "r29"
+PR = "r30"
SRC_URI = "${XORG_MIRROR}/individual/xserver/xorg-server-${PV}.tar.bz2 \
file://extra-kmodes.patch \
@@ -20,6 +20,7 @@ SRC_URI = "${XORG_MIRROR}/individual/xserver/xorg-server-${PV}.tar.bz2 \
file://fix-newer-xorg-headers.patch \
file://crosscompile.patch \
file://error-address-work-around.patch \
+ file://fix-bogus-stack-variables.patch \
file://nodolt.patch"
# file://kdrive-evdev.patch
# file://kdrive-use-evdev.patch
--
1.7.7.6
More information about the Openembedded-core
mailing list