Disable DRI3 temporarily on Linux desktop.

content/gpu/gpu_main.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stdlib.h>
 
 #if defined(OS_WIN)
 #include <dwmapi.h>
 #include <windows.h>
 #endif
 
 #include "base/debug/trace_event.h"
+#include "base/environment.h"
 #include "base/lazy_instance.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/rand_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "base/threading/platform_thread.h"
 #include "build/build_config.h"
 #include "content/child/child_process.h"
 #include "content/common/content_constants_internal.h"
@@ skipping 182 matching lines @@
 
   // Start the GPU watchdog only after anything that is expected to be time
   // consuming has completed, otherwise the process is liable to be aborted.
   if (enable_watchdog && !delayed_watchdog_enable) {
     watchdog_thread = new GpuWatchdogThread(kGpuTimeout);
     base::Thread::Options options;
     options.timer_slack = base::TIMER_SLACK_MAXIMUM;
     watchdog_thread->StartWithOptions(options);
   }
 
+  // Temporarily disable DRI3 on desktop Linux.
+  // The GPU process is crashing on DRI3-enabled desktop Linux systems.
+  // TODO(jorgelo): remove this when crbug.com/415681 is fixed.
+#if defined(OS_LINUX) && !defined(OS_CHROMEOS)
+  scoped_ptr<base::Environment> env(base::Environment::Create());

[mdempsky, 2014/11/07 06:40:33]

nit: Since GpuMain() doesn't return, it might be worth wrapping these two
statements in a block?  Otherwise I think the Environment object will never get
destroyed.

[Jorge Lucangeli Obes, 2014/11/07 15:53:48]

Done.

+  env->SetVar("LIBGL_DRI3_DISABLE", "1");
+#endif
+
   gpu::GPUInfo gpu_info;
   // Get vendor_id, device_id, driver_version from browser process through
   // commandline switches.
   GetGpuInfoFromCommandLine(gpu_info, command_line);
 
   base::TimeDelta collect_context_time;
   base::TimeDelta initialize_one_off_time;
 
   // Warm up resources that don't need access to GPUInfo.
   if (WarmUpSandbox(command_line)) {
@@ skipping 300 matching lines @@
     return true;
   }
 
   return false;
 }
 #endif  // defined(OS_WIN)
 
 }  // namespace.
 
 }  // namespace content