Details
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Bug
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Resolution: Unresolved
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P2: Important
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None
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6.3.0 Feature Freeze
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None
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Linux/X11
Description
This is off qtbase/799660d679e5cc1638d403a19871534627e17dc6 with {{config.opt}:
-opensource -confirm-license -debug -force-debug-info -separate-debug-info -c++std c++2a -developer-build -sctp -pch -headersclean
and a self-compiled GCC 11.2. Here's the trace when enabling sctp debug:
QDEBUG : tst_QSctpSocket::clientSendDataOnDelayedDisconnect() QSctpSocket::QSctpSocket() QDEBUG : tst_QSctpSocket::clientSendDataOnDelayedDisconnect() QSctpSocket::writeDatagram(0x8131e30, 7000, "", -1) QDEBUG : tst_QSctpSocket::clientSendDataOnDelayedDisconnect() QSctpSocketPrivate::writeToSocket() QDEBUG : tst_QSctpSocket::clientSendDataOnDelayedDisconnect() QSctpSocketPrivate::writeToSocket() sent datagram of size 7000 to channel 0 QDEBUG : tst_QSctpSocket::clientSendDataOnDelayedDisconnect() QSctpSocket::QSctpSocket() QDEBUG : tst_QSctpSocket::clientSendDataOnDelayedDisconnect() QSctpSocket::setMaximumChannelCount(0) QDEBUG : tst_QSctpSocket::clientSendDataOnDelayedDisconnect() QSctpSocketPrivate::canReadNotification() QDEBUG : tst_QSctpSocket::clientSendDataOnDelayedDisconnect() QSctpSocketPrivate::canReadNotification() about to read 7000 bytes QDEBUG : tst_QSctpSocket::clientSendDataOnDelayedDisconnect() QSctpSocketPrivate::canReadNotification() got datagram from channel -1, size = 7000 QFATAL : tst_QSctpSocket::clientSendDataOnDelayedDisconnect() ASSERT: "header.streamNumber >= 0" in file /home/marc/Qt/qtbase/src/network/socket/qsctpsocket.cpp, line 222 FAIL! : tst_QSctpSocket::clientSendDataOnDelayedDisconnect() Received a fatal error. Loc: [/home/marc/Qt/qtbase/src/network/socket/qsctpsocket.cpp(222)] Totals: 29 passed, 1 failed, 0 skipped, 0 blacklisted, 1844ms ********* Finished testing of tst_QSctpSocket ********* ==2166687== ==2166687== Process terminating with default action of signal 6 (SIGABRT) ==2166687== at 0x586D18B: raise (raise.c:51) ==2166687== by 0x584C858: abort (abort.c:79) ==2166687== by 0x4CA33CC: qAbort() (in /home/marc/Qt/qtbase-build/lib/libQt6Core.so.6.3.0) ==2166687== by 0x4CB2B70: qt_message_fatal(QtMsgType, QMessageLogContext const&, QString const&) (in /home/marc/Qt/qtbase-build/lib/libQt6Core.so.6.3.0) ==2166687== by 0x4CAECE5: QMessageLogger::fatal(char const*, ...) const (in /home/marc/Qt/qtbase-build/lib/libQt6Core.so.6.3.0) ==2166687== by 0x4CA3255: qt_assert(char const*, char const*, int) (in /home/marc/Qt/qtbase-build/lib/libQt6Core.so.6.3.0) ==2166687== by 0x4AB0783: QSctpSocketPrivate::canReadNotification() (in /home/marc/Qt/qtbase-build/lib/libQt6Network.so.6.3.0) ==2166687== by 0x49F34FC: QAbstractSocket::waitForReadyRead(int) (in /home/marc/Qt/qtbase-build/lib/libQt6Network.so.6.3.0) ==2166687== by 0x409A9A: tst_QSctpSocket::clientSendDataOnDelayedDisconnect() (in /home/marc/Qt/qtbase-build/tests/auto/network/socket/qsctpsocket/tst_qsctpsocket)
This is with an assertion header.streamNumber >= 0 added after the similar check for < size(). As far as I could make out, the QIpDatagramHeader's streamNumber is never touched in readDatagram(), despite us passing WantAll, so it comes out as -1. But I have no idea how this stuff works, so I'm Jira'ing it.