** No longer affects: unity (Ubuntu)
** No longer affects: freetype (Ubuntu)
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Title:
compiz crashed with SIGSEGV in
It severely affects packages beyond the one that causes the flaw.
** Changed in: cairo (Ubuntu)
Importance: High = Critical
** Bug watch added: freedesktop.org Bugzilla #81874
https://bugs.freedesktop.org/show_bug.cgi?id=81874
** Also affects: libcairo via
** Tags added: utopic
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Title:
compiz crashed with SIGSEGV in af_latin_hints_compute_edges()
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** Changed in: freetype (Ubuntu)
Importance: Undecided = High
** Changed in: cairo (Ubuntu)
Importance: Undecided = High
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Title:
compiz
Is it possible to get some input from cairo maintainers?
There is not really an Ubuntu cairo maintainer, the bug should be
report to upstream on
https://bugs.freedesktop.org/enter_bug.cgi?product=cairo
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** Changed in: unity (Ubuntu)
Status: Triaged = Invalid
** Also affects: freetype (Ubuntu)
Importance: Undecided
Status: New
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This crash happened with libfreetype6 2.4.12-0ubuntu1 installed. Is it
still reproducible with 2.5.2-1ubuntu2, the version in Ubuntu 14.04?
** Changed in: freetype (Ubuntu)
Status: New = Incomplete
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actually, based on the previous comment it looks lke it almost certainly
would still occur with new freetype since these interfaces are not
thread-safe; seems that this need to be fixed in cairo (or in compiz
applying its own mutexes).
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Steve, the latest duplicate shows 2.5.2-1ubuntu2:
https://bugs.launchpad.net/bugs/1304763
Is it possible to get some input from cairo maintainers?
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: cairo (Ubuntu)
Status: New = Confirmed
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Title:
Brilliant work, Alexey.
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Title:
compiz crashed with SIGSEGV in af_latin_hints_compute_edges()
To manage notifications about this bug go to:
I looked at my coredump on trusty (it crashed for me twice already!)
with gdb and I see evidence that this crash might be due to
multithreading issues. The reason is that when inspecting memory at %rdx
(edge) and I see that a pointer at %rdx+0x48 (edge-first) doesn't match
with a pointer in %rcx
I looked at the implementation of cairo-ft-font.c and it seems that
there are huge multi-threading violations in cairo. The reason is that
FreeType API documentation clearly states:
In multi-threaded applications, make sure that the same FT_Library
object or any of its children doesn't get
** Also affects: cairo
Importance: Undecided
Status: New
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Title:
compiz crashed with SIGSEGV in af_latin_hints_compute_edges()
To
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: cairo (Ubuntu)
Status: New = Confirmed
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Title:
** Project changed: cairo = cairo (Ubuntu)
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Title:
compiz crashed with SIGSEGV in af_latin_hints_compute_edges()
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e.u.c report on
https://errors.ubuntu.com/problem/62a5e02a5ec4ed62cd98c21d2ff80a5cdf6aec47
** Changed in: unity (Ubuntu)
Importance: Medium = High
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** Tags added: bugpattern-needed
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Title:
compiz crashed with SIGSEGV in af_latin_hints_compute_edges()
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** Tags added: trusty
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Title:
compiz crashed with SIGSEGV in af_latin_hints_compute_edges()
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** Changed in: unity (Ubuntu)
Status: New = Triaged
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Title:
compiz crashed with SIGSEGV in af_latin_hints_compute_edges()
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