diff options
| -rw-r--r-- | gnu/local.mk | 1 | ||||
| -rw-r--r-- | gnu/packages/kde.scm | 10 | ||||
| -rw-r--r-- | gnu/packages/patches/qtbase-fix-krita-deadlock.patch | 110 | ||||
| -rw-r--r-- | gnu/packages/qt.scm | 1 |
4 files changed, 121 insertions, 1 deletions
diff --git a/gnu/local.mk b/gnu/local.mk index 139c17e751..2c0d5076d3 100644 --- a/gnu/local.mk +++ b/gnu/local.mk @@ -1489,6 +1489,7 @@ dist_patch_DATA = \ %D%/packages/patches/qrcodegen-cpp-make-install.patch \ %D%/packages/patches/qt4-ldflags.patch \ %D%/packages/patches/qtbase-absolute-runpath.patch \ + %D%/packages/patches/qtbase-fix-krita-deadlock.patch \ %D%/packages/patches/qtbase-moc-ignore-gcc-macro.patch \ %D%/packages/patches/qtbase-use-TZDIR.patch \ %D%/packages/patches/qtscript-disable-tests.patch \ diff --git a/gnu/packages/kde.scm b/gnu/packages/kde.scm index 9a80e362b6..9fa8ed7c15 100644 --- a/gnu/packages/kde.scm +++ b/gnu/packages/kde.scm @@ -360,6 +360,14 @@ a module for implementing ODF Gantt charts, which are bar charts that illustrate project schedules.") (license license:gpl2+))) +(define qtbase-for-krita + (package + (inherit qtbase) + (source (origin + (inherit (package-source qtbase)) + (patches (append (origin-patches (package-source qtbase)) + (search-patches "qtbase-fix-krita-deadlock.patch"))))))) + (define-public krita (package (name "krita") @@ -434,7 +442,7 @@ illustrate project schedules.") ("openexr" ,openexr) ("perl" ,perl) ("poppler-qt5" ,poppler-qt5) - ("qtbase" ,qtbase) + ("qtbase" ,qtbase-for-krita) ("qtdeclarative" ,qtdeclarative) ("qtmultimedia" ,qtmultimedia) ("qtsvg" ,qtsvg) diff --git a/gnu/packages/patches/qtbase-fix-krita-deadlock.patch b/gnu/packages/patches/qtbase-fix-krita-deadlock.patch new file mode 100644 index 0000000000..d3554be3c9 --- /dev/null +++ b/gnu/packages/patches/qtbase-fix-krita-deadlock.patch @@ -0,0 +1,110 @@ +Fix a deadlock in Krita: + +https://bugreports.qt.io/browse/QTBUG-83207 + +Patch copied from Qt bug tracker: + +https://codereview.qt-project.org/c/qt/qtbase/+/296034 + +From 276fa8383a7535765be7182883ef4aade17ce013 Mon Sep 17 00:00:00 2001 +From: Thiago Macieira <thiago.macieira@intel.com> +Date: Thu, 02 Apr 2020 12:08:41 -0300 +Subject: [PATCH] QLibrary: fix deadlock caused by fix to QTBUG-39642 + +Commit ae6f73e8566fa76470937aca737141183929a5ec inserted a mutex around +the entire load_sys(). We had reasoed that deadlocks would only occur if +the object creation in instance() recursed into its own instance(), +which was already a bug. But we had forgotten that dlopen()/ +LoadLibrary() executes initialization code from the module being loaded, +which could cause a recursion back into the same QPluginLoader or +QLibrary object. This recursion is benign because the module *is* loaded +and dlopen()/LoadLibrary() returns the same handle. + +[ChangeLog][QtCore][QLibrary and QPluginLoader] Fixed a deadlock that +would happen if the plugin or library being loaded has load-time +initialization code (C++ global variables) that recursed back into the +same QLibrary or QPluginLoader object. + +PS: QLibraryPrivate::loadPlugin() updates pluginState outside a mutex +lock, so pluginState should be made an atomic variable. Once that is +done, we'll only need locking the mutex to update errorString (no +locking before loading). + +Fixes: QTBUG-83207 +Task-number: QTBUG-39642 +Change-Id: Ibdc95e9af7bd456a94ecfffd160209304e5ab2eb +Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io> +Reviewed-by: David Faure <david.faure@kdab.com> +--- + +diff --git a/src/corelib/plugin/qlibrary.cpp b/src/corelib/plugin/qlibrary.cpp +index ddb053c..be9d92b 100644 +--- a/src/corelib/plugin/qlibrary.cpp ++++ b/src/corelib/plugin/qlibrary.cpp +@@ -576,9 +576,7 @@ + + Q_TRACE(QLibraryPrivate_load_entry, fileName); + +- mutex.lock(); + bool ret = load_sys(); +- mutex.unlock(); + if (qt_debug_component()) { + if (ret) { + qDebug() << "loaded library" << fileName; +diff --git a/src/corelib/plugin/qlibrary_unix.cpp b/src/corelib/plugin/qlibrary_unix.cpp +index 017aa97..a5c72f8 100644 +--- a/src/corelib/plugin/qlibrary_unix.cpp ++++ b/src/corelib/plugin/qlibrary_unix.cpp +@@ -123,6 +123,7 @@ + + bool QLibraryPrivate::load_sys() + { ++ QMutexLocker locker(&mutex); + QString attempt; + QFileSystemEntry fsEntry(fileName); + +@@ -213,6 +214,7 @@ + } + #endif + ++ locker.unlock(); + bool retry = true; + Handle hnd = nullptr; + for (int prefix = 0; retry && !hnd && prefix < prefixes.size(); prefix++) { +@@ -273,6 +275,8 @@ + } + } + #endif ++ ++ locker.relock(); + if (!hnd) { + errorString = QLibrary::tr("Cannot load library %1: %2").arg(fileName, qdlerror()); + } +diff --git a/src/corelib/plugin/qlibrary_win.cpp b/src/corelib/plugin/qlibrary_win.cpp +index 000bf76..ef58724 100644 +--- a/src/corelib/plugin/qlibrary_win.cpp ++++ b/src/corelib/plugin/qlibrary_win.cpp +@@ -78,6 +78,7 @@ + // fileName + // + // NB If it's a plugin we do not ever try the ".dll" extension ++ QMutexLocker locker(&mutex); + QStringList attempts; + + if (pluginState != IsAPlugin) +@@ -95,6 +96,7 @@ + attempts.prepend(QDir::rootPath() + fileName); + #endif + ++ locker.unlock(); + Handle hnd = nullptr; + for (const QString &attempt : qAsConst(attempts)) { + #ifndef Q_OS_WINRT +@@ -115,6 +117,7 @@ + #ifndef Q_OS_WINRT + SetErrorMode(oldmode); + #endif ++ locker.relock(); + if (!hnd) { + errorString = QLibrary::tr("Cannot load library %1: %2").arg( + QDir::toNativeSeparators(fileName), qt_error_string()); diff --git a/gnu/packages/qt.scm b/gnu/packages/qt.scm index 0cb36427a0..e0e71c595d 100644 --- a/gnu/packages/qt.scm +++ b/gnu/packages/qt.scm @@ -342,6 +342,7 @@ developers using C++ or QML, a CSS & JavaScript like language.") (define-public qtbase (package (name "qtbase") + ;; TODO Remove ((gnu packages kde) qtbase-for-krita) when upgrading qtbase. (version "5.14.2") (source (origin (method url-fetch) |