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  1. Qt
  2. QTBUG-17196

crash on sudden bearer down (connection loss) during a QNetworkAccessManager download

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Details

    • Bug
    • Resolution: Done
    • P1: Critical
    • 4.7.3
    • 4.7.2
    • Network: BearerManagement
    • None
    • Nokia N8
    • 8fe811e14b6db6a9637a5bf6d276613786291762, b1d877e32361e8ca5c092a4df4528e5aa868008f, d0d0763f6e0c7709208ad1c573266ee527f6e4ff, 50e7bea8bb4ce5a97ab8ff9c7062fc0fa092aec0

    Description

      During a download, if the network connection is lost the application may crash.
      The easiest way to reproduce this is to power off the AP while using WLAN.

      The observed crashes are data abort or E32User-CBase 49 panic in the ConnectionProgressNotifier::RunL() function.
      These are caused by QNAM deleting the QNetworkSession from the closed signal - when it returns, the active object tries to use its data members after it has been deleted.

      Revealed by change cdc4ce0acde93b23c7e4941b5c195a8d23ff6900, though ConnectionProgressNotifier had latent bugs in 4.7.1

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        Issue Links

          replaces

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-18195 Crash after closing WLAN connection during HTTP request

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

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              shkearns Shane Kearns
              shkearns Shane Kearns
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              Dates

                Created:
                Updated:
                Resolved: