[okular] [Bug 435626] Okular crashes when trying to modify a form-pdf

Tue Apr 13 07:40:16 BST 2021

https://bugs.kde.org/show_bug.cgi?id=435626

--- Comment #6 from Emanuele Spirito <emaster987 at gmail.com> ---
To Albert: 
(0) Even without reproducing that specific bug, can you see all the
form-fields? As descripted in the description of the attachment mostly of the
pdf is editable
(1) Poppler version I'm using: Poppler 0.90.0
(2) I reproduced the bug and the outcome was the same. Here it is the valgrind
output:
[espirito at localhost Scrivania]$ valgrind okular Presticulo_47775440.pdf 
==3701== Memcheck, a memory error detector
==3701== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==3701== Using Valgrind-3.16.1 and LibVEX; rerun with -h for copyright info
==3701== Command: okular Presticulo_47775440.pdf
==3701== 
==3701== Conditional jump or move depends on uninitialised value(s)
==3701==    at 0x21A40C61: ???
==3701==    by 0x1DEDA5A7: ???
==3701== 
==3701== Conditional jump or move depends on uninitialised value(s)
==3701==    at 0x21A40C61: ???
==3701==    by 0x1DE8EA27: ???
==3701== 
==3701== Conditional jump or move depends on uninitialised value(s)
==3701==    at 0x1C28316A: ??? (in /usr/lib64/qt5/plugins/okularpart.so)
==3701==    by 0x5133573: QWidget::event(QEvent*) (in
/usr/lib64/libQt5Widgets.so.5.15.2)
==3701==    by 0x51DC6F1: QFrame::event(QEvent*) (in
/usr/lib64/libQt5Widgets.so.5.15.2)
==3701==    by 0x5F53994:
QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) (in
/usr/lib64/libQt5Core.so.5.15.2)
==3701==    by 0x50F1EB1: QApplicationPrivate::notify_helper(QObject*, QEvent*)
(in /usr/lib64/libQt5Widgets.so.5.15.2)
==3701==    by 0x5F53BD7: QCoreApplication::notifyInternal2(QObject*, QEvent*)
(in /usr/lib64/libQt5Core.so.5.15.2)
==3701==    by 0x512985F: QWidgetPrivate::setGeometry_sys(int, int, int, int,
bool) (in /usr/lib64/libQt5Widgets.so.5.15.2)
==3701==    by 0x512A6DF: QWidget::setGeometry(QRect const&) (in
/usr/lib64/libQt5Widgets.so.5.15.2)
==3701==    by 0x51DDB76:
QAbstractScrollAreaPrivate::layoutChildren_helper(bool*, bool*) (in
/usr/lib64/libQt5Widgets.so.5.15.2)
==3701==    by 0x51DE01E: QAbstractScrollAreaPrivate::layoutChildren() (in
/usr/lib64/libQt5Widgets.so.5.15.2)
==3701==    by 0x51DF633: QAbstractScrollArea::event(QEvent*) (in
/usr/lib64/libQt5Widgets.so.5.15.2)
==3701==    by 0x50F1EC2: QApplicationPrivate::notify_helper(QObject*, QEvent*)
(in /usr/lib64/libQt5Widgets.so.5.15.2)
==3701== 
==3701== Thread 12 Okular::PixmapGe:
==3701== Use of uninitialised value of size 8
==3701==    at 0x2B2343C8: GfxImageColorMap::getRGBXLine(unsigned char*,
unsigned char*, int) (in /usr/lib64/libpoppler.so.101.0.0)
==3701==    by 0x2B2DA1E5: SplashOutputDev::imageSrc(void*, unsigned char*,
unsigned char*) (in /usr/lib64/libpoppler.so.101.0.0)
==3701==    by 0x2B2EFF21: Splash::scaleImageYdXd(bool (*)(void*, unsigned
char*, unsigned char*), void*, SplashColorMode, int, bool, int, int, int, int,
SplashBitmap*) (in /usr/lib64/libpoppler.so.101.0.0)
==3701==    by 0x2B2F46D3: Splash::scaleImage(bool (*)(void*, unsigned char*,
unsigned char*), void*, SplashColorMode, int, bool, int, int, int, int, bool,
bool) (in /usr/lib64/libpoppler.so.101.0.0)
==3701==    by 0x2B2F95E0: Splash::drawImage(bool (*)(void*, unsigned char*,
unsigned char*), void (*)(void*, SplashBitmap*), void*, SplashColorMode, bool,
int, int, double*, bool, bool) (in /usr/lib64/libpoppler.so.101.0.0)
==3701==    by 0x2B2E0757: SplashOutputDev::drawSoftMaskedImage(GfxState*,
Object*, Stream*, int, int, GfxImageColorMap*, bool, Stream*, int, int,
GfxImageColorMap*, bool) (in /usr/lib64/libpoppler.so.101.0.0)
==3701==    by 0x2B2174C3: Gfx::doImage(Object*, Stream*, bool) (in
/usr/lib64/libpoppler.so.101.0.0)
==3701==    by 0x2B211012: Gfx::opXObject(Object*, int) (in
/usr/lib64/libpoppler.so.101.0.0)
==3701==    by 0x2B206BD1: Gfx::go(bool) (in /usr/lib64/libpoppler.so.101.0.0)
==3701==    by 0x2B207593: Gfx::display(Object*, bool) (in
/usr/lib64/libpoppler.so.101.0.0)
==3701==    by 0x2B26B362: Page::displaySlice(OutputDev*, double, double, int,
bool, bool, int, int, int, int, bool, bool (*)(void*), void*, bool (*)(Annot*,
void*), void*, bool) (in /usr/lib64/libpoppler.so.101.0.0)
==3701==    by 0x2B0591CB: Poppler::Page::renderToImage(double, double, int,
int, int, int, Poppler::Page::Rotation, void (*)(QImage const&, QVariant
const&), bool (*)(QVariant const&), bool (*)(QVariant const&), QVariant const&)
const (in /usr/lib64/libpoppler-qt5.so.1.25.0)
==3701== 
QSocketNotifier: Invalid socket 8 and type 'Read', disabling...
QSocketNotifier: Invalid socket 9 and type 'Read', disabling...
==3627== 
==3627== HEAP SUMMARY:
==3627==     in use at exit: 52,897,422 bytes in 115,284 blocks
==3627==   total heap usage: 2,143,872 allocs, 2,028,588 frees, 1,459,454,060
bytes allocated
==3627== 
==3627== LEAK SUMMARY:
==3627==    definitely lost: 8 bytes in 1 blocks
==3627==    indirectly lost: 32 bytes in 1 blocks
==3627==      possibly lost: 1,245,720 bytes in 4,401 blocks
==3627==    still reachable: 51,651,662 bytes in 110,881 blocks
==3627==                       of which reachable via heuristic:
==3627==                         newarray           : 456 bytes in 13 blocks
==3627==                         multipleinheritance: 142,456 bytes in 173
blocks
==3627==         suppressed: 0 bytes in 0 blocks
==3627== Rerun with --leak-check=full to see details of leaked memory
==3627== 
==3627== Use --track-origins=yes to see where uninitialised values come from
==3627== For lists of detected and suppressed errors, rerun with: -s
==3627== ERROR SUMMARY: 3479134 errors from 5 contexts (suppressed: 0 from 0)
==3701== Thread 1:
==3701== Invalid read of size 8
==3701==    at 0x2B04CBF1: Poppler::Document::formCalculateOrder() const (in
/usr/lib64/libpoppler-qt5.so.1.25.0)
==3701==    by 0x2AFB8D4E: ??? (in
/usr/lib64/qt5/plugins/okular/generators/okularGenerator_poppler.so)
==3701==  Address 0x50 is not stack'd, malloc'd or (recently) free'd
==3701== 
KCrash: Application 'okular' crashing...
KCrash: Attempting to start /usr/libexec/drkonqi
[1]   Uscita 253              valgrind okular Presticulo_47775440.pdf

[2]+  Fermato                 valgrind okular Presticulo_47775440.pdf

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