Chrome Version : 48.0.2564.116 on Ubuntu 14.04.4 LTS with desktop environment Cinnamon 2.8.6 

URLs : any URLs

Other browsers tested:
Firefox 44.0.2 : OK

Steps that will reproduce the problem :
1. open google chrome via terminal: google-chrome --enable-logging --v=1
2. open some tabs, surf some sites.. (eg. getpocket.com, evernote.com, feedly.com, etc) on average 10-20 tabs
3. after sometime, chrome freezes

Expected result :
Surfing the web normally. If something freezes it should notified some messages. Sometimes it shows page not responding message, but frequently not.

What happens instead:
Chrome freezes, nothing happen, computer unusable. I've tried letting it run half hour a couple of times, still nothing happened. Must hard restart with Ctrl + Alt + SysRq + B

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chrome_debug.log shows a bunch of ERRORs and WARNINGs

[13032:13099:0228/004232:ERROR:native_backend_libsecret.cc(599)] Unable to load secret itemCannot get secret of a locked object
[13032:13099:0228/004232:ERROR:native_backend_libsecret.cc(599)] Unable to load secret itemCannot get secret of a locked object
[13032:13099:0228/004232:ERROR:native_backend_libsecret.cc(599)] Unable to load secret itemCannot get secret of a locked object

[13032:13032:0228/004115:ERROR:logging.h(808)] Failed to call method: org.freedesktop.DBus.ObjectManager.GetManagedObjects: object_path= /: org.freedesktop.DBus.Error.UnknownMethod: Method "GetManagedObjects" with signature "" on interface "org.freedesktop.DBus.ObjectManager" doesn't exist

[13032:13032:0228/004115:WARNING:object_manager.cc(368)] org.bluez /: Failed to get managed objects

[13032:13104:0228/004647:WARNING:extension_protocols.cc(426)] Failed to GetPathForExtension: boadgeojelhgndaghljhdicfkmllpafd
[13032:13104:0228/004647:WARNING:url_request_job_manager.cc(89)] Failed to map: chrome-extension://boadgeojelhgndaghljhdicfkmllpafd/cast_sender.js
[13032:13104:0228/004647:WARNING:extension_protocols.cc(426)] Failed to GetPathForExtension: dliochdbjfkdbacpmhlcpmleaejidimm
[13032:13104:0228/004647:WARNING:url_request_job_manager.cc(89)] Failed to map: chrome-extension://dliochdbjfkdbacpmhlcpmleaejidimm/cast_sender.js

[13032:13099:0228/005838:WARNING:native_backend_libsecret.cc(307)] Adding login when there are 2 matching logins already!

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I have tried creating new user profile, not succeed. Maybe my synced data is corrupted? Worry about losing some data if I reset it at chrome sync dashboard (https://www.google.com/settings/chrome/sync).
 

Deleted: chrome_debug.log 13.9 MB

chrome_debug.log 13.9 MB View Download