[Bug 1784650] New: Fontconfig is slow, causing stuttering and
freezing
by bugzilla＠redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=1784650
Bug ID: 1784650
Summary: Fontconfig is slow, causing stuttering and freezing
Product: Fedora
Version: 31
Status: NEW
Component: fontconfig
Severity: high
Assignee: tagoh(a)redhat.com
Reporter: bepvte+bugzilla(a)gmail.com
QA Contact: extras-qa(a)fedoraproject.org
CC: ajax(a)redhat.com, caillon+fedoraproject(a)gmail.com,
fonts-bugs(a)lists.fedoraproject.org,
gnome-sig(a)lists.fedoraproject.org,
i18n-bugs(a)lists.fedoraproject.org,
john.j5live(a)gmail.com, mclasen(a)redhat.com,
pnemade(a)redhat.com, rhughes(a)redhat.com,
rstrode(a)redhat.com, sandmann(a)redhat.com,
tagoh(a)redhat.com
Target Milestone: ---
Classification: Fedora
Description of problem:
Fontconfig is much much slower than on other distros, and it stutters or
freezes applications that use it.
Version-Release number of selected component (if applicable):
Name : fontconfig
Version : 2.13.92
Release : 3.fc31
Architecture: x86_64
How reproducible:
I can reproduce this bug on a fresh Fedora 31 vm with the Xfce desktop and
google-noto-sans-* fonts installed.
Steps to Reproduce:
1. dnf install google-noto-sans-*
2. run gedit on the attached example file
alternatively
1. dnf install google-noto-sans-*
2. open firefox and browse to https://www.wikidata.org/wiki/Q52 (page with lots
of languages)
Actual results:
It takes around 60 seconds for gedit to become responsive to scrolling and
input. Mousepad is faster but still slow.
It takes firefox upwards of 5 minutes to get to first paint on a page with many
fonts or languages, compared to a simpler page.
Expected results:
Gedit should load files with many fonts at a similar speed as other distros.
The page should load quickly, like on Debian and others.
Additional info:
I have tried to diagnose the source of this issue in many ways.
Running `perf trace` on what sysprof indicated was the most busy function
(FcStrCmpIgnoreCaseAndDelims), shows that every name of every font family is
being compared to every other name of every other font family. I do not know if
this is a normal behaviour of fontconfig.
I have noticed the amount of calls to "FcStrCmpIgnoreCaseAndDelims" and program
startup time both drop to a similar amount as Debian's when all of the
"google-noto" configuration files in /etc/fonts/conf.d/ are deleted (These
files are not present in Debian). However, this might not be the source of the
problem:
In the Debian vm, with a copy of my computer's /etc/fonts/, including the
google-noto files, (I took care to ensure that there would be no broken
symlinks) and /usr/share/fonts, fontconfig does not stall any programs. The
amount of calls to FcStrCmpIgnoreCaseAndDelims is also much lower as well.
This led me to believe that it was a difference caused by compiler flags but
this does not seem to be the case. I tried to replace the optflags in the
package, except for the rpmbuild required debug ones, and found no difference.
I also checked to ensure that it was not caused by GCC version differences.
Debian results for mousepad:
1,845,449 calls to FcStrCmpIgnoreCaseAndDelims
Time: 5 seconds
Fedora results for mousepad:
11,658,380 calls to FcStrCmpIgnoreCaseAndDelims
Time: 23 seconds
https://perfht.ml/2tleJxN
Here is a link to a Firefox profiler result of the wikidata page, where in the
flame graph you can see that Firefox is spending most of its time in
fontconfig. You can also see "FirstNonBlankPaint" is at 50 seconds in the
marker table.
TLDR: Fontconfig matching is slow with all google-noto fonts installed, unless
you remove the noto config files. Using the same exact font directory and
config directory (including the noto config files) on Debian does not cause the
same problem.
--
You are receiving this mail because:
You are on the CC list for the bug.
2 years, 1 month
[Bug 1806272] New: forge-font macro transition causes broken
dependencies
by bugzilla＠redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=1806272
Bug ID: 1806272
Summary: forge-font macro transition causes broken dependencies
Product: Fedora
Version: rawhide
Status: NEW
Component: dejavu-fonts
Assignee: nicolas.mailhot(a)laposte.net
Reporter: decathorpe(a)gmail.com
QA Contact: extras-qa(a)fedoraproject.org
CC: fonts-bugs(a)lists.fedoraproject.org,
nicolas.mailhot(a)laposte.net, paul(a)frixxon.co.uk,
peter(a)thecodergeek.com
Target Milestone: ---
Classification: Fedora
With the transition to new forge-based fonts macros, the -common subpackage was
dropped, but some packages depend on that. They are now not installable on
fedora 32+ because that package is gone (only Obsoleted, not Provided).
This affects at least python3-weasyprint.
Additionally, the sdljava-demo package now has broken dependencies as well:
- /usr/share/fonts/dejavu/DejaVuSans-Bold.ttf
- /usr/share/fonts/dejavu/DejaVuSans-BoldOblique.ttf
- /usr/share/fonts/dejavu/DejaVuSans-Oblique.ttf
- /usr/share/fonts/dejavu/DejaVuSans.ttf
Probably those files were renamed with the forge macro transition.
--
You are receiving this mail because:
You are on the CC list for the bug.
2 years, 2 months
[Bug 1890210] New: CVE-2020-15999 freetype: heap-based buffer
overflow via malformed ttf files
by bugzilla＠redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=1890210
Bug ID: 1890210
Summary: CVE-2020-15999 freetype: heap-based buffer overflow
via malformed ttf files
Product: Security Response
Hardware: All
OS: Linux
Status: NEW
Component: vulnerability
Keywords: Security
Severity: medium
Priority: medium
Assignee: security-response-team(a)redhat.com
Reporter: gsuckevi(a)redhat.com
CC: ajax(a)redhat.com, caillon+fedoraproject(a)gmail.com,
erack(a)redhat.com, fonts-bugs(a)lists.fedoraproject.org,
gecko-bugs-nobody(a)redhat.com, gghezzo(a)redhat.com,
gnome-sig(a)lists.fedoraproject.org, gparvin(a)redhat.com,
jhorak(a)redhat.com, john.j5live(a)gmail.com,
jramanat(a)redhat.com, jweiser(a)redhat.com,
kevin(a)tigcc.ticalc.org, mclasen(a)redhat.com,
mkasik(a)redhat.com, rhughes(a)redhat.com,
rstrode(a)redhat.com, sandmann(a)redhat.com,
scorneli(a)redhat.com, stcannon(a)redhat.com,
stransky(a)redhat.com, thee(a)redhat.com,
tpopela(a)redhat.com
Target Milestone: ---
Classification: Other
A flaw was found in freetype in the way it processes PNG images embedded into
fonts. A crafted TTF file can lead to heap-based buffer overflow due to integer
truncation in Load_SBit_Png function.
Reference:
https://savannah.nongnu.org/bugs/?59308
Upstream patch:
https://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=a3bab...
--
You are receiving this mail because:
You are on the CC list for the bug.
2 years, 2 months
[Bug 1820166] New: Droid sans overrides my default CJK font
by bugzilla＠redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=1820166
Bug ID: 1820166
Summary: Droid sans overrides my default CJK font
Product: Fedora
Version: 32
Status: NEW
Component: google-droid-fonts
Severity: low
Assignee: nicolas.mailhot(a)laposte.net
Reporter: taocrismon(a)hotmail.com
QA Contact: extras-qa(a)fedoraproject.org
CC: fonts-bugs(a)lists.fedoraproject.org,
nicolas.mailhot(a)laposte.net, oliver(a)redhat.com,
paul(a)frixxon.co.uk, tremble(a)tremble.org.uk
Target Milestone: ---
Classification: Fedora
Description of problem:
I have this (per-user) fontconfig configuration to set my preferred sans-serif
font:
<alias>
<family>sans-serif</family>
<prefer>
<family>Noto Sans</family>
<family>Noto Sans CJK SC</family>
</prefer>
</alias>
It should fall back to "Noto Sans CJK SC" when displaying CJK characters. Since
F32 this isn't working anymore. CJK characters are rendered in a different
font, which I cannot recognize.
Digging through fc_debug logs, "Droid Sans" is appended right after "Noto
Sans", before "Noto Sans CJK SC" in the font matching list. Debug messages
confirm it's indeed Droid Sans getting picked.
Removing the relevant part in /etc/fonts/conf.d/65-google-droid-sans-fonts.conf
mitigates this issue. However since both Noto Sans & Droid Sans do not contain
CJK characters, they should both be skipped in favor of CJK fonts. Could this
be a metadata problem? i.e. Droid Sans wrongly advertises as CJK capable.
Version-Release number of selected component (if applicable):
google-droid-sans-fonts-20200215-3.fc32.noarch
--
You are receiving this mail because:
You are on the CC list for the bug.
2 years, 2 months
[Bug 1753020] New: Powerline symbols no longer align
by bugzilla＠redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=1753020
Bug ID: 1753020
Summary: Powerline symbols no longer align
Product: Fedora
Version: 30
Status: NEW
Component: terminus-font
Assignee: extras-orphan(a)fedoraproject.org
Reporter: andrew(a)linuxjedi.co.uk
QA Contact: extras-qa(a)fedoraproject.org
CC: extras-orphan(a)fedoraproject.org,
fonts-bugs(a)lists.fedoraproject.org,
rhbugs(a)n-dimensional.de
Target Milestone: ---
Classification: Fedora
Created attachment 1615993
--> https://bugzilla.redhat.com/attachment.cgi?id=1615993&action=edit
Screenshot of zsh+om-my-zsh using powerline-fonts and terminus-fonts 4.48
Description of problem:
With version 4.48 of the Terminus font the powerline symbols no longer align
for sizes less than 14pt
Version-Release number of selected component (if applicable):
terminus-fonts-4.48-1.fc30.noarch
How reproducible:
100%
Steps to Reproduce:
1. Install terminus-fonts and powerline-fonts.
2. Use something with powerline (zsh, vim, etc...)
3. Update to the latest terminus-fonts version
4. Use powerline things again
Actual results:
Bad symbol alignment
Expected results:
Good symbol alignment
Additional info:
--
You are receiving this mail because:
You are on the CC list for the bug.
2 years, 4 months
[Bug 1851919] New: Pango 1.45 crashes pidgin with any link click
by bugzilla＠redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=1851919
Bug ID: 1851919
Summary: Pango 1.45 crashes pidgin with any link click
Product: Fedora
Version: rawhide
Status: NEW
Component: pango
Assignee: pwu(a)redhat.com
Reporter: zkabelac(a)redhat.com
QA Contact: extras-qa(a)fedoraproject.org
CC: caillon+fedoraproject(a)gmail.com,
fonts-bugs(a)lists.fedoraproject.org,
gnome-sig(a)lists.fedoraproject.org,
i18n-bugs(a)lists.fedoraproject.org,
john.j5live(a)gmail.com, mclasen(a)redhat.com,
pwu(a)redhat.com, rhughes(a)redhat.com,
rstrode(a)redhat.com, sandmann(a)redhat.com,
tagoh(a)redhat.com
Target Milestone: ---
Classification: Fedora
Description of problem:
I've noticed instant crash of a pidgin - with this new pango 1.45 package.
I've downgraded to version pango-1.44.7-3.fc33 and pidgin is 'usable'
again (aka I can click on URL without getting instant core dump).
This is backtrace I'm getting on a crash:
(pidgin 2.13.0-20)
#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:49
--Type <RET> for more, q to quit, c to continue without paging--
49 return ret;
[Current thread is 1 (Thread 0x7f2b86c61cc0 (LWP 100183))]
(gdb) bt
#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:49
#1 0x00007f2b883a78a4 in __GI_abort () at abort.c:79
#2 0x00007f2b886d5b6c in g_assertion_message
(domain=<optimized out>, file=0x7f2b88b7e19b "../pango/pango-context.c",
line=<optimized out>, func=<optimized out>, message=<optimized out>) at
../glib/gtestutils.c:2930
#3 0x00007f2b8873408f in g_assertion_message_expr
(domain=0x7f2b88b79e0d "Pango", file=0x7f2b88b7e19b
"../pango/pango-context.c", line=1435, func=0x7f2b88b7e3d0
"itemize_state_process_run", expr=<optimized out>) at ../glib/gtestutils.c:2956
#4 0x00007f2b88b603d6 in itemize_state_process_run () at
/lib64/libpango-1.0.so.0
#5 0x00007f2b88b61218 in pango_itemize_with_base_dir () at
/lib64/libpango-1.0.so.0
#6 0x00007f2b88b6a695 in pango_layout_check_lines.part () at
/lib64/libpango-1.0.so.0
#7 0x00007f2b88b6c539 in pango_layout_get_extents_internal () at
/lib64/libpango-1.0.so.0
#8 0x00007f2b88b6cac1 in pango_layout_get_pixel_size () at
/lib64/libpango-1.0.so.0
#9 0x000056100c9047f1 in gtk_imhtml_tip ()
#10 0x00007f2b8870ba51 in g_timeout_dispatch
(source=source@entry=0x56100ec326c0, callback=0x56100c9045b0
<gtk_imhtml_tip>, user_data=0x56100d93c2b0)
at ../glib/gmain.c:4800
#11 0x00007f2b8870aeaf in g_main_dispatch (context=0x56100d287540) at
../glib/gmain.c:3309
#12 g_main_context_dispatch (context=0x56100d287540) at ../glib/gmain.c:3974
#13 0x00007f2b8870b238 in g_main_context_iterate
(context=0x56100d287540, block=block@entry=1, dispatch=dispatch@entry=1,
self=<optimized out>)
at ../glib/gmain.c:4047
#14 0x00007f2b8870b553 in g_main_loop_run (loop=0x56100ea147e0) at
../glib/gmain.c:4241
#15 0x00007f2b88f37ba2 in gtk_main () at /lib64/libgtk-x11-2.0.so.0
#16 0x000056100c8bdb4c in main ()
--
You are receiving this mail because:
You are on the CC list for the bug.
2 years, 4 months
[Bug 1853937] New: Inconsistent rendering of ti, tt ligatures
by bugzilla＠redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=1853937
Bug ID: 1853937
Summary: Inconsistent rendering of ti, tt ligatures
Product: Fedora
Version: 32
Status: NEW
Component: lato-fonts
Assignee: pikachu.2014(a)gmail.com
Reporter: james(a)ettle.org.uk
QA Contact: extras-qa(a)fedoraproject.org
CC: fonts-bugs(a)lists.fedoraproject.org,
pikachu.2014(a)gmail.com, piotr1212(a)gmail.com
Target Milestone: ---
Classification: Fedora
Created attachment 1699956
--> https://bugzilla.redhat.com/attachment.cgi?id=1699956&action=edit
Sample renderings
The horizontal 't-crossing' strokes of the ti and tt ligatures are rendered
slightly below the x-height, in a manner that is more- or less-visible
depending on font size. It's most visible at 11pt.
Attached are samples rendered with RGB subpixel anti-aliasing, slight hinting.
The issue is visible in the 8, 11 and 14pt samples.
lato-fonts-2.015-9.fc32.noarch
freetype-2.10.1-2.fc32.x86_64
--
You are receiving this mail because:
You are on the CC list for the bug.
2 years, 6 months
[Bug 1786596] New: Vertical alignment is off with PANGO_GRAVITY_EAST
and PANGO_GRAVITY_HINT_LINE
by bugzilla＠redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=1786596
Bug ID: 1786596
Summary: Vertical alignment is off with PANGO_GRAVITY_EAST and
PANGO_GRAVITY_HINT_LINE
Product: Fedora
Version: 31
OS: Linux
Status: NEW
Component: pango
Assignee: pwu(a)redhat.com
Reporter: abetakehiko(a)gmail.com
QA Contact: extras-qa(a)fedoraproject.org
CC: caillon+fedoraproject(a)gmail.com,
fonts-bugs(a)lists.fedoraproject.org,
gnome-sig(a)lists.fedoraproject.org,
i18n-bugs(a)lists.fedoraproject.org,
john.j5live(a)gmail.com, mclasen(a)redhat.com,
pwu(a)redhat.com, rhughes(a)redhat.com,
rstrode(a)redhat.com, sandmann(a)redhat.com,
tagoh(a)redhat.com
Target Milestone: ---
Classification: Fedora
Description of problem:
Japanese chars and Latin chars in the same line do not vertically align when
the pango context's gravity is set to PANGO_GRAVITY_EAST and its hint set to
PANGO_GRAVITY_HINT_LINE.
Version-Release number of selected component (if applicable):
pango-1.44.7-1.fc31.x86_64
How reproducible:
Always
Steps to Reproduce:
pango-view --text="あーいうえお abcde" --gravity east --gravity-hint line
--font="NotoSerifJP 24"
Actual results:
Japanese chars and Latin chars in the same line do not vertically align.
Expected results:
Japanese chars and Latin chars in the same line vertically align as before.
Additional info:
--
You are receiving this mail because:
You are on the CC list for the bug.
2 years, 7 months
[Bug 1752788] New: CVE-2015-9381 freetype: a heap-based buffer
over-read in T1_Get_Private_Dict in type1/t1parse.c leading to information
disclosure
by bugzilla＠redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=1752788
Bug ID: 1752788
Summary: CVE-2015-9381 freetype: a heap-based buffer over-read
in T1_Get_Private_Dict in type1/t1parse.c leading to
information disclosure
Product: Security Response
Hardware: All
OS: Linux
Status: NEW
Component: vulnerability
Keywords: Security
Severity: medium
Priority: medium
Assignee: security-response-team(a)redhat.com
Reporter: mrehak(a)redhat.com
CC: ajax(a)redhat.com, caillon+fedoraproject(a)gmail.com,
fonts-bugs(a)lists.fedoraproject.org,
gnome-sig(a)lists.fedoraproject.org,
john.j5live(a)gmail.com, kevin(a)tigcc.ticalc.org,
mclasen(a)redhat.com, mkasik(a)redhat.com,
rhughes(a)redhat.com, rstrode(a)redhat.com,
sandmann(a)redhat.com
Target Milestone: ---
Classification: Other
FreeType before 2.6.1 has a heap-based buffer over-read in T1_Get_Private_Dict
in type1/t1parse.c.
--
You are receiving this mail because:
You are on the CC list for the bug.
2 years, 10 months
[Bug 1774474] New: Missing some coverage in certain variants
by bugzilla＠redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=1774474
Bug ID: 1774474
Summary: Missing some coverage in certain variants
Product: Fedora
Version: rawhide
Status: NEW
Component: dejavu-fonts
Severity: low
Assignee: nicolas.mailhot(a)laposte.net
Reporter: tagoh(a)redhat.com
QA Contact: extras-qa(a)fedoraproject.org
CC: fonts-bugs(a)lists.fedoraproject.org,
nicolas.mailhot(a)laposte.net, paul(a)frixxon.co.uk,
peter(a)thecodergeek.com
Target Milestone: ---
Classification: Fedora
Description of problem:
I'm expecting to see same glyph coverage to all variants available in the
package but apparently not. this is just a result running some test cases with
fc-validate against languages which is expectedly or unexpectedly supposed to
assign dejavu as a default font for.
See logs stored in the following link for more details. that demonstrates this
issue.
https://jenkins-continuous-infra.apps.ci.centos.org/blue/rest/organizatio...
Version-Release number of selected component (if applicable):
2.37-2.fc31
How reproducible:
always
Steps to Reproduce:
1.fc-validate -l <lang> /path/to/fonts
2.
3.
Actual results:
(One of) snippet from logs:
[2019-11-19T14:20:10.928Z] RESULT: PASS:
/usr/share/fonts/dejavu/DejaVuSans-Bold.ttf satisfy ab language coverage.
[2019-11-19T14:20:10.928Z] RESULT: PASS:
/usr/share/fonts/dejavu/DejaVuSans.ttf satisfy ab language coverage.
[2019-11-19T14:20:10.928Z] RESULT: PASS:
/usr/share/fonts/dejavu/DejaVuSansCondensed-Oblique.ttf satisfy ab language
coverage.
[2019-11-19T14:20:10.928Z] RESULT: PASS:
/usr/share/fonts/dejavu/DejaVuSans-Oblique.ttf satisfy ab language coverage.
[2019-11-19T14:20:10.928Z] RESULT: FAIL:
/usr/share/fonts/dejavu/DejaVuSans-ExtraLight.ttf doesn't satisfy ab language
coverage.
[2019-11-19T14:20:10.928Z] RESULT: PASS:
/usr/share/fonts/dejavu/DejaVuSansCondensed-Bold.ttf satisfy ab language
coverage.
[2019-11-19T14:20:10.928Z] RESULT: PASS:
/usr/share/fonts/dejavu/DejaVuSansCondensed-BoldOblique.ttf satisfy ab language
coverage.
[2019-11-19T14:20:10.928Z] RESULT: PASS:
/usr/share/fonts/dejavu/DejaVuSansCondensed.ttf satisfy ab language coverage.
[2019-11-19T14:20:10.928Z] RESULT: PASS:
/usr/share/fonts/dejavu/DejaVuSans-BoldOblique.ttf satisfy ab language
coverage.
[2019-11-19T14:20:10.928Z] Run test ab: done. Test's exit code: 0
Expected results:
ExtraLight should have same coverage.
Additional info:
As it is an experimental, this may be an RFE.
--
You are receiving this mail because:
You are on the CC list for the bug.
2 years, 10 months