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[Chris Coulson <chris.coulson@xxxxxxxxxxxxx>]

** Changed in: oxide
       Status: Triaged => Fix Released

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https://bugs.launchpad.net/bugs/1490868

Title:
  Trunk crashes with SIGBUS in
  gpu::gles2::ProgramCache::ComputeProgramHash on the device

Status in Oxide:
  Fix Released

Bug description:
  (gdb) bt
  #0  gpu::gles2::ProgramCache::ComputeProgramHash (this=this@entry=0xabd54640, 
      hashed_shader_0=hashed_shader_0@entry=0x9793a5c8 "\t\360\f\362\341\317\362\204\311R\301_\347\351\326\357E۸89\027&\361\300\215\376=;\232\226M\035\062\270b\340\r&", 
      hashed_shader_1=hashed_shader_1@entry=0x9793a5dc "9\027&\361\300\215\376=;\232\226M\035\062\270b\340\r&", 
      bind_attrib_location_map=bind_attrib_location_map@entry=0x8ff20a74, 
      transform_feedback_varyings=std::vector of length 0, capacity 0, 
      transform_feedback_buffer_mode=transform_feedback_buffer_mode@entry=0, 
      result=result@entry=0x9793a5f0 "`\246\223\227U")
      at ../../../../third_party/chromium/src/gpu/command_buffer/service/program_cache.cc:128
  #1  0xad650458 in gpu::gles2::ProgramCache::GetLinkedProgramStatus (
      this=this@entry=0xabd54640, 
      shader_signature_a="#define TexCoordPrecision highp\n attribute TexCoordPrecision vec4 a_position; attribute float a_index; uniform mat4 matrix; uniform TexCoordPrecision vec2 quad[4];  void main() { vec2 pos = quad[int(a"..., 
      shader_signature_b=" precision mediump float; uniform vec4 color;  void main() { gl_FragColor = color; } :CompileOptions:292876:MaxVertexAttribs:16:MaxVertexUniformVectors:256:MaxVaryingVectors:15:MaxVertexTextureImageUn"..., 
      bind_attrib_location_map=bind_attrib_location_map@entry=0x8ff20a74, 
      transform_feedback_varyings=std::vector of length 0, capacity 0, 
      transform_feedback_buffer_mode=0)
      at ../../../../third_party/chromium/src/gpu/command_buffer/service/program_cache.cc:40
  #2  0xad65579a in gpu::gles2::Program::Link(gpu::gles2::ShaderManager*, gpu::gles2::Program::VaryingsPackingOption, base::Callback<void (std::string const&, std::string const&)> const&) (this=this@entry=0x8ff20a18, 
      manager=<optimized out>, 
      varyings_packing_option=gpu::gles2::Program::kCountOnlyStaticallyUsed, 
      shader_callback=...)
      at ../../../../third_party/chromium/src/gpu/command_buffer/service/program_manager.cc:593
  #3  0xad62c298 in gpu::gles2::GLES2DecoderImpl::DoLinkProgram (
      this=0xafeaf4d8, program_id=3)
      at ../../../../third_party/chromium/src/gpu/command_buffer/service/gles2_cmd_decoder.cc:6349
  #4  0xad62c518 in gpu::gles2::GLES2DecoderImpl::HandleLinkProgram (
      this=<optimized out>, immediate_data_size=<optimized out>, 
      cmd_data=<optimized out>)
      at ../../../../third_party/chromium/src/gpu/command_buffer/service/gles2_cmd_decoder_autogen.h:2388
  #5  0xad638748 in gpu::gles2::GLES2DecoderImpl::DoCommandsImpl<false> (
      this=0xafeaf4d8, num_commands=<optimized out>, buffer=<optimized out>, 
      num_entries=88, entries_processed=0x9793a87c)
      at ../../../../third_party/chromium/src/gpu/command_buffer/service/gles2_cmd_decoder.cc:4378
  #6  0xad6117ea in gpu::CommandParser::ProcessCommands (this=0xabf01060, 
      num_commands=num_commands@entry=20)
      at ../../../../third_party/chromium/src/gpu/command_buffer/service/cmd_parser.cc:52
  #7  0xad648078 in gpu::GpuScheduler::PutChanged (this=0xafe8f070)
      at ../../../../third_party/chromium/src/gpu/command_buffer/service/gpu_scheduler.cc:75
  #8  0xad2ded14 in content::GpuCommandBufferStub::OnAsyncFlush (
      this=this@entry=0xabd4e748, put_offset=442, flush_count=3, 
      latency_info=std::vector of length 0, capacity 0)
      at ../../../../third_party/chromium/src/content/common/gpu/gpu_command_buffer_stub.cc:787
  #9  0xad2e1662 in DispatchToMethodImpl<content::GpuCommandBufferStub, void (content::GpuCommandBufferStub::*)(int, unsigned int, std::vector<ui::LatencyInfo> const&), int, unsigned int, std::vector<ui::LatencyInfo, std::allocator<ui::LatencyInfo> >, 0u, 1u, 2u> (arg=..., method=
      (void (content::GpuCommandBufferStub::*)(content::GpuCommandBufferStub * const, int, unsigned int, const std::vector<ui::LatencyInfo, std::allocator<ui::LatencyInfo> > &)) 0xad2decb5 <content::GpuCommandBufferStub::OnAsyncFlush(int, unsigned int, std::vector<ui::LatencyInfo, std::allocator<ui::LatencyInfo> > const&)>, obj=0xabd4e748) at ../../../../third_party/chromium/src/base/tuple.h:254
  #10 DispatchToMethod<content::GpuCommandBufferStub, void (content::GpuCommandBuf
  ferStub::*)(int, unsigned int, std::vector<ui::LatencyInfo> const&), int, unsigned int, std::vector<ui::LatencyInfo, std::allocator<ui::LatencyInfo> > > (
      arg=..., method=
      (void (content::GpuCommandBufferStub::*)(content::GpuCommandBufferStub * const, int, unsigned int, const std::vector<ui::LatencyInfo, std::allocator<ui::LatencyInfo> > &)) 0xad2decb5 <content::GpuCommandBufferStub::OnAsyncFlush(int, unsigned int, std::vector<ui::LatencyInfo, std::allocator<ui::LatencyInfo> > const&)>, obj=0xabd4e748) at ../../../../third_party/chromium/src/base/tuple.h:261
  #11 Dispatch<content::GpuCommandBufferStub, content::GpuCommandBufferStub, void, void (content::GpuCommandBufferStub::*)(int, unsigned int, std::vector<ui::LatencyInfo> const&)> (sender=0xabd4e748, parameter=0x0, func=
      (void (content::GpuCommandBufferStub::*)(content::GpuCommandBufferStub * const, int, unsigned int, const std::vector<ui::LatencyInfo, std::allocator<ui::LatencyInfo> > &)) 0xad2decb5 <content::GpuCommandBufferStub::OnAsyncFlush(int, unsigned int, std::vector<ui::LatencyInfo, std::allocator<ui::LatencyInfo> > const&)>, obj=0xabd4e748, msg=0xabd3d490)
      at ../../../../third_party/chromium/src/content/common/gpu/gpu_messages.h:543
  #12 content::GpuCommandBufferStub::OnMessageReceived (this=0xabd4e748, message=
      ...)
      at ../../../../third_party/chromium/src/content/common/gpu/gpu_command_buffer_stub.cc:285
  #13 0xad2ee62c in content::MessageRouter::RouteMessage (
      this=this@entry=0xabfd231c, msg=...)
      at ../../../../third_party/chromium/src/content/common/message_router.cc:54
  #14 0xad2dd5ae in content::GpuChannel::HandleMessage (this=0xabfd22b8)
      at ../../../../third_party/chromium/src/content/common/gpu/gpu_channel.cc:731
  #15 0xad00339a in Run (this=0x9793ad18)
      at ../../../../third_party/chromium/src/base/callback.h:396
  #16 base::debug::TaskAnnotator::RunTask (this=this@entry=0xabe509b0, 
      queue_function=0xaef37744 "MessageLoop::PostTask", pending_task=...)
      at ../../../../third_party/chromium/src/base/debug/task_annotator.cc:51
  #17 0xad0187ca in base::MessageLoop::RunTask (this=this@entry=0xabe508f0, 
      pending_task=...)
      at ../../../../third_party/chromium/src/base/message_loop/message_loop.cc:481
  #18 0xad018a4a in base::MessageLoop::DeferOrRunPendingTask (
      this=this@entry=0xabe508f0, pending_task=...)
      at ../../../../third_party/chromium/src/base/message_loop/message_loop.cc:490
  #19 0xad018e38 in base::MessageLoop::DoWork (this=0xabe508f0)
      at ../../../../third_party/chromium/src/base/message_loop/message_loop.cc:602
  #20 0xad01a098 in base::MessagePumpDefault::Run (this=0xac0ebbb8, 
      delegate=0xabe508f0)
      at ../../../../third_party/chromium/src/base/message_loop/message_pump_default.cc:34
  #21 0xad026064 in base::RunLoop::Run (this=this@entry=0x9793ae10)
      at ../../../../third_party/chromium/src/base/run_loop.cc:55
  #22 0xad018414 in base::MessageLoop::Run (this=<optimized out>)
      at ../../../../third_party/chromium/src/base/message_loop/message_loop.cc:288
  #23 0xad037106 in Run (message_loop=<optimized out>, this=0xabe50128)
      at ../../../../third_party/chromium/src/base/threading/thread.cc:199
  #24 base::Thread::ThreadMain (this=0xabe50128)
      at ../../../../third_party/chromium/src/base/threading/thread.cc:251
  #25 0xad034db2 in base::(anonymous namespace)::ThreadFunc (
      params=<optimized out>)
      at ../../../../third_party/chromium/src/base/threading/platform_thread_posix.cc:64
  #26 0xb5d25490 in start_thread () from /lib/arm-linux-gnueabihf/libpthread.so.0
  #27 0xb5dc7c4c in ?? () from /lib/arm-linux-gnueabihf/libc.so.6

  (gdb) p $_siginfo
  $1 = {si_signo = 7, si_errno = 0, si_code = 1, _sifields = {_pad = {
        -1359799887, 1477047, -1231125951, 0, 0, 0, 0, 0, 256899064, 0, 0, 
        1486937, 0, 0, 0, 0, 192224672, -1098449352, 192224672, 21663432, 
        -1098449796, 1, 44, 0, -1098449796, 0, 0, -1385888812, 269287240}, 
      _kill = {si_pid = -1359799887, si_uid = 1477047}, _timer = {
        si_tid = -1359799887, si_overrun = 1477047, si_sigval = {
          sival_int = -1231125951, sival_ptr = 0xb69e8241}}, _rt = {
        si_pid = -1359799887, si_uid = 1477047, si_sigval = {
          sival_int = -1231125951, sival_ptr = 0xb69e8241}}, _sigchld = {
        si_pid = -1359799887, si_uid = 1477047, si_status = -1231125951, 
        si_utime = 0, si_stime = 0}, _sigfault = {si_addr = 0xaef319b1}, 
      _sigpoll = {si_band = -1359799887, si_fd = 1477047}}}

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