[kdevelop] [Bug 368318] Crash during session restore at startup

[Kevin Funk via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=368318

Kevin Funk  changed:

   What|Removed |Added

   Version Fixed In||5.0.1

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[kdevelop] [Bug 368318] Crash during session restore at startup

[Kevin Funk via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=368318

Kevin Funk  changed:

   What|Removed |Added

 Resolution|--- |FIXED
 Status|CONFIRMED   |RESOLVED

--- Comment #6 from Kevin Funk  ---
Well, assuming this particular crash got fixed. Please reopen / open another
bug report for any related crashes.

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[kdevelop] [Bug 368318] Crash during session restore at startup

[Kevin Funk via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=368318

--- Comment #5 from Kevin Funk  ---
Git commit eaf3739fba2229187938123ec0af7459dad3ad28 by Kevin Funk.
Committed on 16/09/2016 at 16:23.
Pushed by kfunk into branch '5.0'.

Hardening: Fix one of the immediate crashes

M  +1-0language/duchain/topducontextdynamicdata.cpp

http://commits.kde.org/kdevplatform/eaf3739fba2229187938123ec0af7459dad3ad28

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[kdevelop] [Bug 368318] Crash during session restore at startup

[Milian Wolff via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=368318

Milian Wolff  changed:

   What|Removed |Added

 Ever confirmed|0   |1
 Resolution|WAITINGFORINFO  |---
 Status|NEEDSINFO   |CONFIRMED

--- Comment #4 from Milian Wolff  ---
Ah, the issue here is 

kdevelop(21625)/default unknown: Failed to load item with identity 111

That belongs to the QML/JS plugin (QmlJSNormalDUContext)- did you
uninstall/disable that one?

I still think we should handle such cases better, somehow...

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[kdevelop] [Bug 368318] Crash during session restore at startup

[Eike Hein via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=368318

--- Comment #3 from Eike Hein  ---
Valgrind requested by kfunk:

[eike@ehl1 ~/devel/src/kde/workspace/plasma-desktop (master) 272K]$
KDEV_DISABLE_JIT=1 valgrind --track-origins=yes kdevelop
==21625== Memcheck, a memory error detector
==21625== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.
==21625== Using Valgrind-3.11.0 and LibVEX; rerun with -h for copyright info
==21625== Command: kdevelop
==21625== 
kdevelop(21625)/default unknown: Failed to load item with identity 111
==21625== Invalid read of size 8
==21625==at 0xCA93D7E:
KDevelop::TopDUContextDynamicData::DUChainItemStorage::getItemForIndex(unsigned
int) const (topducontextdynamicdata.cpp:407)
==21625==by 0xCA7C15D:
KDevelop::DUContext::rebuildDynamicData(KDevelop::DUContext*, unsigned int)
(ducontext.cpp:121)
==21625==by 0xCA91F43: KDevelop::TopDUContextDynamicData::load(unsigned
int) (topducontextdynamicdata.cpp:609)
==21625==by 0xCA71224: KDevelop::DUChainPrivate::loadChain(unsigned int,
QSet&) (duchain.cpp:579)
==21625==by 0xCA5D274: KDevelop::DUChain::loadChain(unsigned int)
(duchain.cpp:1311)
==21625==by 0xCABD5DF: KDevelop::ParsingEnvironmentFile::topContext() const
(parsingenvironment.cpp:140)
==21625==by 0xCA5B556:
KDevelop::DUChain::environmentFileForDocument(KDevelop::IndexedString const&,
KDevelop::ParsingEnvironment const*, bool) const (duchain.cpp:1400)
==21625==by 0xCA5B68E:
KDevelop::DUChain::chainForDocument(KDevelop::IndexedString const&,
KDevelop::ParsingEnvironment const*, bool) const (duchain.cpp:1423)
==21625==by 0xCA5B6EB: KDevelop::DUChain::chainForDocument(QUrl const&,
KDevelop::ParsingEnvironment const*, bool) const (duchain.cpp:1382)
==21625==by 0x432135A9: ClangSupport::standardContext(QUrl const&, bool)
(clangsupport.cpp:351)
==21625==by 0xCACEE3A: KDevelop::DUChainUtils::standardContextForUrl(QUrl
const&, bool) (duchainutils.cpp:282)
==21625==by 0x40CCF62E: (anonymous namespace)::getContextAt(QUrl const&,
KTextEditor::Cursor) (contextbrowser.cpp:112)
==21625==  Address 0x0 is not stack'd, malloc'd or (recently) free'd
==21625== 
KCrash: crashing... crashRecursionCounter = 2
KCrash: Application Name = kdevelop path = /home/eike/devel/install/bin pid =
21625
KCrash: Arguments: /home/eike/devel/install/bin/kdevelop 
KCrash: Attempting to start /home/eike/devel/install/lib64/libexec/drkonqi from
kdeinit
sock_file=/run/user/1000/kdeinit5__0

[1]+  Stopped KDEV_DISABLE_JIT=1 valgrind --track-origins=yes
kdevelop
[eike@ehl1 ~/devel/src/kde/workspace/plasma-desktop (master) 272K]$
kdevelop(21625)/default unknown: QSocketNotifier: Invalid socket 8 and type
'Read', disabling...
==21625== 
==21625== HEAP SUMMARY:
==21625== in use at exit: 66,428,008 bytes in 539,635 blocks
==21625==   total heap usage: 1,551,399 allocs, 1,011,764 frees, 272,421,586
bytes allocated
==21625== 
==21625== LEAK SUMMARY:
==21625==definitely lost: 2,104 bytes in 30 blocks  
==21625==indirectly lost: 4,872 bytes in 104 blocks 
==21625==  possibly lost: 1,092,700 bytes in 3,921 blocks   
==21625==still reachable: 65,328,332 bytes in 535,580 blocks
==21625==   of which reachable via heuristic:   
==21625== newarray   : 31,352 bytes in 763
blocks  
==21625== multipleinheritance: 190,840 bytes in 270
blocks  
==21625== suppressed: 0 bytes in 0 blocks   
==21625== Rerun with --leak-check=full to see details of leaked memory  
==21625==   
==21625== For counts of detected and suppressed errors, rerun with: -v  
==21625== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)

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[kdevelop] [Bug 368318] Crash during session restore at startup

[Eike Hein via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=368318

--- Comment #2 from Eike Hein  ---
I can reproduce it in the sense that it crashes every first run :) If I wipe
the cache it eventually happens again, too.

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[kdevelop] [Bug 368318] Crash during session restore at startup

[Milian Wolff via KDE Bugzilla]

https://bugs.kde.org/show_bug.cgi?id=368318

Milian Wolff  changed:

   What|Removed |Added

 Resolution|--- |WAITINGFORINFO
 Status|UNCONFIRMED |NEEDSINFO

--- Comment #1 from Milian Wolff  ---
Did it crash before that? Looks like the DUChain info got messed up and then
triggered a crash further down the road :(

not much we can do about this if you cannot reproduce it, I fear. Except
rewriting the whole serialization to introduce more safeguards, like
checksumming and stuff

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