Hello All,

Today i had set up new computer (Linux Mint)
Before finish i set up a syncing. But before i catch permanent CPU eating
in new Firefox i saw that there no addons. Only bookmarked were synced.
After restarting and posting crash report i checked Firefox - there were
not addons yet. So i think it's crash report as in Safe mode.
So i think this trouble without addons, only during syncing.

Crash report (Linux Mint 18.02 64bit, without addons). During crash i
pressed Bookmrk about previous crash and had beed filling tags of
bookmark...

https://crash-stats.mozilla.com/report/index/f4085463-
a792-4101-ad3f-3e36d1171121

P.S. When i have been writting this email my Firefox hanged up agian
(Ubuntu)
Crash report: https://crash-stats.mozilla.com/report/index/cbbb17c1-
c3f0-454c-ba8b-22a381171121

2017-11-21 21:32 GMT+01:00 Kris Maglione <kmagli...@mozilla.com>:

> On Tue, Nov 21, 2017 at 02:22:26PM -0500, Ted Mielczarek wrote:
>
>> On Tue, Nov 21, 2017, at 06:54 AM, Alexey Zvyagin wrote:
>>
>>> Hi!
>>>
>>> I made some crashes by hands (crashfirefox.exe) in Windows 7 and in Unix
>>> through kill -ABRT
>>>
>>> What are the symptoms? In random moments the Firefox v56.* has only-one
>>> core CPU 100% eating. In Windows 7 (64bit) & Linux (Ubuntu 16.04 LTE
>>> 64bit)
>>>
>>> Reports are here:
>>>
>>> Ubuntu OS:
>>>
>>> https://crash-stats.mozilla.com/report/index/0b0e6273-26fb-
>>> 482e-b033-c91be1171101
>>> https://crash-stats.mozilla.com/report/index/237ae0e4-6eb2-
>>> 4c8b-87e8-3c2471171101
>>> https://crash-stats.mozilla.com/report/index/7ddfad60-8f3e-
>>> 4495-a05f-5d6d21171110
>>> https://crash-stats.mozilla.com/report/index/95468eb1-28b2-
>>> 40f7-8f0c-8a7261171110
>>> https://crash-stats.mozilla.com/report/index/cd310102-c547-
>>> 486f-bbd3-0b7791171110
>>> https://crash-stats.mozilla.com/report/index/6df179b4-721a-
>>> 4440-97e5-059d21171110
>>>
>>> Windows 7:
>>>
>>> https://crash-stats.mozilla.com/report/index/8e172c11-2367-
>>> 43b1-98f2-128251171113#allthreads
>>>
>>
>> Hi Alexey,
>>
>> These crashes all seem to be stuck in sqlite code querying the places
>> database that contains browsing history. In the Windows crash, you can
>> see that thread 0 is waiting on a sqlite mutex for the database, and
>> thread 44 is in the middle of running some sort of sqlite query, so
>> presumably it's holding the mutex.
>>
>
> These are actually all bookmark queries, and unfortunately, main-thread,
> blocking bookmark queries, at that.
>
> My best guess would also be an extension, but WebExtensions at least
> should not be hitting these code paths.
>
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