SUMMARY
When painting with some brushes, there is a message "Accessing uninitialized random source" (which always happened) and now it also prints a backtrace.

STEPS TO REPRODUCE
Unfortunately I'm not sure, I only noticed it hours later in the console and then couldn't reproduce.

OBSERVED RESULT
Backtrace and message.

EXPECTED RESULT
No backtrace, no message.

SOFTWARE/OS VERSIONS
Krita

 Version: 5.0.0-prealpha (git 9e8cccc)
 Languages: pl, pl_PL, pl
 Hidpi: true

Qt

  Version (compiled): 5.12.8
  Version (loaded): 5.12.8

OS Information

  Build ABI: x86_64-little_endian-lp64
  Build CPU: x86_64
  CPU: x86_64
  Kernel Type: linux
  Kernel Version: 5.4.0-58-generic
  Pretty Productname: Linux Mint 20.1
  Product Type: linuxmint
  Product Version: 20.1
  Desktop: X-Cinnamon

ADDITIONAL INFORMATION
Accessing uninitialized random source!
	 "["
	 "0: /home/tymon/kritadev/install/lib/x86_64-linux-gnu/libkritaglobal.so.17(kisBacktrace()+0x4a) [0x7ffff58dde0a]"
	 "1: /home/tymon/kritadev/install/lib/x86_64-linux-gnu/libkritaimage.so.17(KisPaintInformation::randomSource() const+0x12c) [0x7ffff5c9201c]"
	 "2: /home/tymon/kritadev/install/lib/x86_64-linux-gnu/libkritalibbrush.so.17(KisImagePipeBrush::prepareForSeqNo(KisPaintInformation const&, int)+0x209) [0x7ffff42553d9]"
	 "3: /home/tymon/kritadev/install/lib/x86_64-linux-gnu/kritaplugins/kritadefaultpaintops.so(+0x39123) [0x7fffd160e123]"
	 "4: /home/tymon/kritadev/install/lib/x86_64-linux-gnu/kritaplugins/kritadefaultpaintops.so(KisDabRenderingQueue::addDab(KisDabCacheUtils::DabRequestInfo const&, double, double)+0x7b) [0x7fffd161401b]"
	 "5: /home/tymon/kritadev/install/lib/x86_64-linux-gnu/kritaplugins/kritadefaultpaintops.so(KisDabRenderingExecutor::addDab(KisDabCacheUtils::DabRequestInfo const&, double, double)+0x36) [0x7fffd1616c66]"
	 "6: /home/tymon/kritadev/install/lib/x86_64-linux-gnu/kritaplugins/kritadefaultpaintops.so(+0x33843) [0x7fffd1608843]"
	 "7: /home/tymon/kritadev/install/lib/x86_64-linux-gnu/libkritaimage.so.17(+0x2338a0) [0x7ffff5c948a0]"
	 "8: /home/tymon/kritadev/install/lib/x86_64-linux-gnu/kritaplugins/kritadefaultpaintops.so(+0x36e29) [0x7fffd160be29]"
	 "9: /home/tymon/kritadev/install/lib/x86_64-linux-gnu/libkritaimage.so.17(+0x232988) [0x7ffff5c93988]"
	 "10: /home/tymon/kritadev/install/lib/x86_64-linux-gnu/libkritaimage.so.17(+0x232ae1) [0x7ffff5c93ae1]"
	 "11: /home/tymon/kritadev/install/lib/x86_64-linux-gnu/libkritaimage.so.17(+0x232ae1) [0x7ffff5c93ae1]"
	 "12: /home/tymon/kritadev/install/lib/x86_64-linux-gnu/libkritaimage.so.17(+0x232ae1) [0x7ffff5c93ae1]"
	 "13: /home/tymon/kritadev/install/lib/x86_64-linux-gnu/libkritaimage.so.17(+0x232ae1) [0x7ffff5c93ae1]"
	 "14: /home/tymon/kritadev/install/lib/x86_64-linux-gnu/libkritaimage.so.17(+0x232ae1) [0x7ffff5c93ae1]"
	 "15: /home/tymon/kritadev/install/lib/x86_64-linux-gnu/libkritaimage.so.17(KisPaintOp::paintBezierCurve(KisPaintInformation const&, QPointF const&, QPointF const&, KisPaintInformation const&, KisDistanceInformation*)+0x4e) [0x7ffff5c93b4e]"
	 "16: /home/tymon/kritadev/install/lib/x86_64-linux-gnu/libkritaimage.so.17(KisPainter::paintPainterPath(QPainterPath const&)+0x28f) [0x7ffff5c80e4f]"
	 "17: /home/tymon/kritadev/install/lib/x86_64-linux-gnu/libkritaui.so.17(KisMaskedFreehandStrokePainter::paintPainterPath(QPainterPath const&)+0x23) [0x7ffff6f1b153]"
	 "18: /home/tymon/kritadev/install/lib/x86_64-linux-gnu/libkritaui.so.17(FreehandStrokeStrategy::doStrokeCallback(KisStrokeJobData*)+0x3f4) [0x7ffff6f12234]"
	 "19: /home/tymon/kritadev/install/lib/x86_64-linux-gnu/libkritaimage.so.17(+0x1e2cc3) [0x7ffff5c43cc3]"
	 "20: /lib/x86_64-linux-gnu/libQt5Core.so.5(+0xc1f82) [0x7ffff475bf82]"
	 "21: /lib/x86_64-linux-gnu/libQt5Core.so.5(+0xbe9d2) [0x7ffff47589d2]"
	 "22: /lib/x86_64-linux-gnu/libpthread.so.0(+0x9609) [0x7ffff25e8609]"
	 "23: /lib/x86_64-linux-gnu/libc.so.6(clone+0x43) [0x7ffff43cc293]"
	 "]"
	 ""