Bug 425725

Summary:	Crash when clicking on a *.md file in dolphin
Product:	[Applications] okular	Reporter:	Michael Josenhans <michael.josenhans>
Component:	general	Assignee:	Okular developers <okular-devel>
Status:	RESOLVED UPSTREAM
Severity:	crash	CC:	aacid, michael.josenhans
Priority:	NOR	Keywords:	drkonqi
Version First Reported In:	1.11.0
Target Milestone:	---
Platform:	Neon
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	Here you find the Readme.md file, which caused the crash when opening with dolphin / okular Here you find the Readme.md file, which caused the crash when opening with dolphin / okular

Description Michael Josenhans 2020-08-23 20:27:24 UTC

Application: okular (1.11.0)

Qt Version: 5.14.2
Frameworks Version: 5.73.0
Operating System: Linux 5.4.0-42-generic x86_64
Windowing system: X11
Distribution: KDE neon User Edition 5.19

-- Information about the crash:
- What I was doing when the application crashed:

I pressed click with the mouse on an readme.md file within dolphin

The crash can be reproduced every time.

-- Backtrace:
Application: Okular (okular), signal: Segmentation fault

[KCrash Handler]
#4  0x00007f0bdbc408a2 in __GI___libc_free (mem=<optimized out>) at malloc.c:3124
#5  0x00007f0bcc3af171 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#6  0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#7  0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#8  0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#9  0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#10 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#11 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#12 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#13 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#14 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#15 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#16 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#17 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#18 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#19 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#20 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#21 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#22 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#23 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#24 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#25 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#26 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#27 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#28 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#29 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#30 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#31 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#32 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#33 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#34 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#35 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#36 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#37 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#38 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#39 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#40 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#41 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#42 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#43 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#44 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#45 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#46 0x00007f0bcc3af155 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#47 0x00007f0bcc3af163 in ___mkd_freeParagraph () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#48 0x00007f0bcc3af4a7 in mkd_cleanup () from /usr/lib/x86_64-linux-gnu/libmarkdown.so.2
#49 0x00007f0bce6650c5 in Markdown::Converter::convertOpenFile (this=this@entry=0x563ec97b8110) at ./generators/markdown/converter.cpp:116
#50 0x00007f0bce665307 in Markdown::Converter::convert (this=0x563ec97b8110, fileName=...) at ./generators/markdown/converter.cpp:68
#51 0x00007f0bd4ac516a in Okular::TextDocumentConverter::convertWithPassword (this=0x563ec97b8110, fileName=...) at ./core/textdocumentgenerator.cpp:59
#52 0x00007f0bd4ac7329 in Okular::TextDocumentGenerator::loadDocumentWithPassword (this=<optimized out>, fileName=..., pagesVector=..., password=...) at ./core/textdocumentgenerator.cpp:295
#53 0x00007f0bd4a9ba7c in Okular::DocumentPrivate::openDocumentInternal (this=0x563ec8f4a570, offer=..., isstdin=isstdin@entry=false, docFile=..., filedata=..., password=...) at ./core/document.cpp:894
#54 0x00007f0bd4a9c1a3 in Okular::Document::openDocument (this=this@entry=0x563ec8f445e0, docFile=..., url=..., _mime=..., password=...) at ./core/document.cpp:2340
#55 0x00007f0bd4c23a15 in Okular::Part::doOpenFile (this=this@entry=0x563ec8eec380, mimeA=..., fileNameToOpenA=..., isCompressedFile=isCompressedFile@entry=0x7ffdeed23467) at ./part.cpp:1372
#56 0x00007f0bd4c249e9 in Okular::Part::openFile (this=0x563ec8eec380) at ./part.cpp:1488
#57 0x00007f0bddab00e1 in KParts::ReadOnlyPartPrivate::openLocalFile (this=this@entry=0x563ec8f1ad20) at ./src/readonlypart.cpp:189
#58 0x00007f0bddab107e in KParts::ReadOnlyPart::openUrl (this=this@entry=0x563ec8eec380, url=...) at ./src/readonlypart.cpp:152
#59 0x00007f0bd4c156a6 in Okular::Part::openUrl (this=0x563ec8eec380, _url=..., swapInsteadOfOpening=<optimized out>) at ./part.cpp:1675
#60 0x0000563ec8d1feeb in Shell::openUrl (this=0x563ec8f18ef0, url=..., serializedOptions=...) at ./shell/shell.cpp:271
#61 0x0000563ec8d20177 in Shell::openDocument (this=0x563ec8f18ef0, url=..., serializedOptions=...) at ./shell/shell.cpp:222
#62 0x0000563ec8d18050 in Okular::main (paths=..., serializedOptions=...) at ./shell/okular_main.cpp:166
#63 0x0000563ec8d17d2b in main (argc=<optimized out>, argv=<optimized out>) at ./shell/main.cpp:97
[Inferior 1 (process 39093) detached]

Possible duplicates by query: bug 394640, bug 389385, bug 379497, bug 375933, bug 361408.

Reported using DrKonqi

Comment 1 Michael Josenhans 2020-08-23 20:30:35 UTC

Created attachment 131133 [details]
Here you find the Readme.md file, which caused the crash when opening with dolphin / okular

Comment 2 Michael Josenhans 2020-08-23 20:32:45 UTC

Created attachment 131134 [details]
Here you find the Readme.md file, which caused the crash when opening with dolphin / okular

This time with content auto-detect

Comment 3 Michael Josenhans 2020-08-23 20:34:01 UTC

Please take the second attachment and open it with the system handler. Same crash occurs.

Comment 4 Albert Astals Cid 2020-08-23 21:27:26 UTC

Not much we can do on Okular's side, it's a bug in the markdown library we use, that even seems to have been fixed but still not part of a release.

https://github.com/Orc/discount/issues/227