Control: reassign -1 src:qtbase-opensource-src 5.10.1+dfsg-7
Control: reassign 898021 src:qtbase-opensource-src 5.10.1+dfsg-7
Control: unblock -1 with 898021
Control: forcemerge -1 898021
sddm is making a blocking call to getrandom(), via the glibc function
getentropy(), via the QRandomGenerator class. Here's a backtrace:
#0 0x00007ffff5ef303a in getentropy (buffer=0x7fffffffe9dc,
length=<optimized out>) at ../sysdeps/unix/sysv/linux/getentropy.c:45
#1 0x00007ffff68a2beb in ?? ()
from target:/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2 0x00007ffff68a3538 in QHashData::detach_helper(void (*)(QHashData::Node*, void*), void (*)(QHashData::Node*), int, int) ()
from target:/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3 0x00007ffff69af7c1 in ?? ()
from target:/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x00007ffff69aef3b in QLoggingCategory::defaultCategory() ()
from target:/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x00007ffff683d815 in qt_message_output(QtMsgType, QMessageLogContext const&, QString const&) () from target:/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6 0x00007ffff693bf70 in QDebug::~QDebug() ()
from target:/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7 0x000055555559c870 in SDDM::DaemonApp::DaemonApp(int&, char**) ()
#8 0x000055555557d1c6 in main ()
Reassigning this to Qt as it is not safe to use these functions in a
general-purpose library for Linux. They should only be used if it's
acceptable to wait some time for entropy to be available.
Ben.
--
Ben Hutchings
No political challenge can be met by shopping. - George Monbiot
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