You are probably looking for a change made after 564869 (known good),but no later than 564870 (first known bad).

CHANGE-LOG URL:

The script might not always return single CL as suspect as some perf builds might get missing due to failure.

https://chromium.googlesource.com/chromium/src/+log/7052b23c75fa7cebab3ba13bcc6f83f39c53f40a..324138ca59bab8c60c2a641f8530073934785423

Suspect: https://chromium.googlesource.com/chromium/src/+/324138ca59bab8c60c2a641f8530073934785423

jochen: Could you please check whether this is caused with respect to your change, if not please help us in assigning it to the right owner.

Thank You

looking

Please find the Stack Trace for the crash id:
---------------------------------------------
Thread 0 (id: 0x1c68) CRASHED [EXCEPTION_ACCESS_VIOLATION_READ @ 0x00000050 ] MAGIC SIGNATURE THREAD
Stack Quality84%Show frame trust levels
0x00007ffbd6259164	(chrome.dll + 0x00a69164 )	ToolbarActionView::IsMenuRunning()
0x00007ffbd7dc9d67	(chrome.dll -feedback_uploader_chrome.cc:57 )	feedback::FeedbackUploaderChrome::StartDispatchingReport()
0x00007ffbd710e473	(chrome.dll -feedback_uploader.cc:192 )	feedback::FeedbackUploader::UpdateUploadTimer()
0x00007ffbd710e004	(chrome.dll -feedback_uploader.cc:208 )	feedback::FeedbackUploader::QueueReportWithDelay(std::basic_string<char,std::char_traits<char>,std::allocator<char> > const &,base::TimeDelta)
0x00007ffbd710df49	(chrome.dll -feedback_uploader.cc:76 )	feedback::FeedbackUploader::QueueReport(std::basic_string<char,std::char_traits<char>,std::allocator<char> > const &)
0x00007ffbd6cd97a4	(chrome.dll -feedback_data.cc:148 )	feedback::FeedbackData::SendReport()
0x00007ffbd6db5930	(chrome.dll -post_task_and_reply_impl.cc:97 )	base::`anonymous namespace'::PostTaskAndReplyRelay::RunReply
0x00007ffbd6db59ef	(chrome.dll -bind_internal.h:649 )	base::internal::Invoker<base::internal::BindState<void (*)(base::(anonymous namespace)::PostTaskAndReplyRelay),base::(anonymous namespace)::PostTaskAndReplyRelay>,void ()>::RunOnce
0x00007ffbd580ff14	(chrome.dll -task_annotator.cc:101 )	base::debug::TaskAnnotator::RunTask(char const *,base::PendingTask *)
0x00007ffbd580f9eb	(chrome.dll -message_loop.cc:319 )	base::MessageLoop::RunTask(base::PendingTask *)
0x00007ffbd580f437	(chrome.dll -message_loop.cc:373 )	base::MessageLoop::DoWork()
0x00007ffbd58ff868	(chrome.dll -message_pump_win.cc:173 )	base::MessagePumpForUI::DoRunLoop()
0x00007ffbd5854ac7	(chrome.dll -message_pump_win.cc:56 )	base::MessagePumpWin::Run(base::MessagePump::Delegate *)
0x00007ffbd580ef90	(chrome.dll -run_loop.cc:102 )	base::RunLoop::Run()
0x00007ffbd5b91873	(chrome.dll -chrome_browser_main.cc:2194 )	ChromeBrowserMainParts::MainMessageLoopRun(int *)
0x00007ffbd5b91677	(chrome.dll -browser_main_loop.cc:983 )	content::BrowserMainLoop::RunMainMessageLoopParts()
0x00007ffbd5b91622	(chrome.dll -browser_main_runner_impl.cc:169 )	content::BrowserMainRunnerImpl::Run()
0x00007ffbd63756ce	(chrome.dll -browser_main.cc:51 )	content::BrowserMain(content::MainFunctionParams const &,std::unique_ptr<content::BrowserProcessSubThread,std::default_delete<content::BrowserProcessSubThread> >)
0x00007ffbd68c77fa	(chrome.dll -content_main_runner_impl.cc:620 )	content::RunBrowserProcessMain(content::MainFunctionParams const &,content::ContentMainDelegate *,std::unique_ptr<content::BrowserProcessSubThread,std::default_delete<content::BrowserProcessSubThread> >)
0x00007ffbd5805765	(chrome.dll -content_main_runner_impl.cc:964 )	content::ContentMainRunnerImpl::Run()
0x00007ffbd57f5172	(chrome.dll -main.cc:459 )	service_manager::Main(service_manager::MainParams const &)
0x00007ffbd57f4a07	(chrome.dll -content_main.cc:19 )	content::ContentMain(content::ContentMainParams const &)
0x00007ffbd57f1af1	(chrome.dll -chrome_main.cc:101 )	ChromeMain
0x00007ff69b6635d5	(chrome.exe -main_dll_loader_win.cc:201 )	MainDllLoader::Launch(HINSTANCE__ *,base::TimeTicks)
0x00007ff69b661698	(chrome.exe -chrome_exe_main_win.cc:230 )	wWinMain
0x00007ff69b7207d5	(chrome.exe -exe_common.inl:283 )	__scrt_common_main_seh
0x00007ffc19cc1fe3	(KERNEL32.dll + 0x00011fe3 )	BaseThreadInitThunk
0x00007ffc1adbf060	(ntdll.dll + 0x0006f060 )	RtlUserThreadStart

Adding release blocker label for this issue.Please reduce priority or remove if not the case.

Thank You!

Jochen: This goes without saying I'm sure, but feel free to proactively revert the CL if the underlying condition is either not obvious or not obviously fixable, and then I (or you if interested :) can fix the underlying condition before relanding.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/95edae15f9e758f2942f49948ffc9288c9a76f19

commit 95edae15f9e758f2942f49948ffc9288c9a76f19
Author: Jochen Eisinger <jochen@chromium.org>
Date: Thu Jun 07 11:27:25 2018

Handle OTR profiles in the IdentityManagerFactory

BUG= 850410 
R=blundell@chromium.org

Change-Id: Id2fde700fdc72d6fe2d2f623293eb368ddd52605
Reviewed-on: https://chromium-review.googlesource.com/1090277
Commit-Queue: Jochen Eisinger <jochen@chromium.org>
Reviewed-by: Colin Blundell <blundell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#565231}
[modify] https://crrev.com/95edae15f9e758f2942f49948ffc9288c9a76f19/chrome/browser/signin/identity_manager_factory.cc

Thanks for the quick fix, Jochen!

Update : 

Retested above issue on Windows(7,8,8.1,10), Linux(14.04 LTS) and Mac(10.12.6, 10.13.1, 10.13.6) OS using latest Canary #69.0.3453.0 and issue is fixed. Browser crash is not seen on sending feedback from guest user. 

Kindly review the attached screen-cast.

Thank You!

Deleted: Canary Behaviour.mp4 440 KB

	Canary Behaviour.mp4 440 KB View Download