[tor-bugs] #24826 [Core Tor/Tor]: LZMA- and Zstandard compressed consensus diffs stall Tor Browser launch for at least 20s or break it entirely if compiled with --enable-expensive-hardening

Tor Bug Tracker & Wiki blackhole at torproject.org
Thu Jan 18 09:09:50 UTC 2018


#24826: LZMA- and Zstandard compressed consensus diffs stall Tor Browser launch for
at least 20s or break it entirely if compiled with --enable-expensive-
hardening
-----------------------------+------------------------------------
 Reporter:  gk               |          Owner:  nickm
     Type:  defect           |         Status:  needs_review
 Priority:  Medium           |      Milestone:  Tor: 0.3.3.x-final
Component:  Core Tor/Tor     |        Version:
 Severity:  Normal           |     Resolution:
 Keywords:  review-group-30  |  Actual Points:
Parent ID:  #22341           |         Points:
 Reviewer:                   |        Sponsor:
-----------------------------+------------------------------------

Comment (by gk):

 Replying to [comment:23 nickm]:
 > In my testing, it helped to change the strchr() in that function to use
 memchr() instead. I don't know why, but maybe it will help you too.
 Branch is `bug24826_031`.

 Seems to work for me, thanks.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/24826#comment:27>
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