1054674 - all normal tabs (i.e, non-pinned tabs) lost after bluescreen not caused by ff or resetting with hardware key

Status: RESOLVED WORKSFORME

(Firefox :: Session Restore, defect)

Description

[liong]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Firefox/31.0 (Beta/Release)
Build ID: 20140716183446

Steps to reproduce:

some other application than firefox (ff) caused a bluescreen.

I had firefox open in the background, ie. not active window, on a Win7/64 system with all KBs installed and >> 100 tabs open (only one window open; all in the same window) for > 60hours. The session survived >100 shutdown/boot cycles and ff has always been successfully auto upgraded.



Actual results:

After rebooting the pc and restarting ff, i lost all the tabs and ff didn't show a sessionrestore screen but the set startpage instead.

Obviously, there's no ff minidump to be expected because win bluescreened for another reason than ff and there isn't any, but I found out that a sessionstore.bak with the correct timestamp of the bluescreen has been created and it seems to shows a reasonable size of ~8MB, but every single byte is 0x00. 

The same thing happened to me a few times before, every time with the annoying result of loosing all tabs.


Expected results:

sessionstore.bak shouldn't have been filled with zeroes but with the most recent consistent session description.

Comment 1

[Wayne Mery (:wsmwk)]

liong,
Have you seen this problem in the past year??

Comment 2

[Masayuki Nakano [:masayuki] (he/him)(JST, +0900)]

I reproduce this even with the latest Nightly builds when I meet BSOD or reset with hardware key.

Interestingly, pinned tabs are restored but only a normal tab is opened with Nightly's homepage. And "Recently closed tabs" and "Recently closed window" are lost too.

(FYI: My machine has some trouble around system strange, sometimes stops response.)

I wonder, session manager overwrites existing files? If so, it should always create new file and rename it after completely created the files.

Comment 3

[Negritas Sergiu, Desktop QA]

Hello I have tried to reproduce the issue but unfortunately I could not reproduce it with firefox 93.0a1(2021-08-31). I will lower the severity for this issue. If the issue is still valid please feel free to change the severity.

Thank you and have a nice day!

Comment 4

[Wayne Mery (:wsmwk)]

masayuki, please reopen if you can still reproduce.
closing based on comment 3