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Re: [tor-bugs] #22788 [Applications/Tor Browser]: Tor Browser rendering hangs when downloading large PDFs
#22788: Tor Browser rendering hangs when downloading large PDFs
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Reporter: teor | Owner: tbb-team
Type: defect | Status: new
Priority: Medium | Milestone:
Component: Applications/Tor Browser | Version:
Severity: Normal | Resolution:
Keywords: | Actual Points:
Parent ID: | Points:
Reviewer: | Sponsor:
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Comment (by teor):
Replying to [comment:1 cypherpunks]:
> Isn't this expected since JIT is disabled in those higher security
settings? Or should there be a whitelist for anything `pdf.js` (at least
for the Medium security setting)?
No, this seems to happen to *other* tabs only while the PDF is
downloading, and not once it's loaded. I don't see why other tabs should
be affected in 7.0.1 / multiprocess at all. But it seems worse than the
6.0 series, not better.
> I agree with you teor, loading PDFs in those security settings can be
annoyingly slow, especially PDFs containing scans of books. Hopefully with
[https://trac.torproject.org/projects/tor/ticket/7501#comment:19 FF59esr
and their switch to Chromium's PDFium we wont get such problems (although
it's written in C++ = memory unsafe)].
Could be a while before that happens. And it seems Google has fixed some
issues in that code and dependent libraries, but they never find them all.
--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22788#comment:2>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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