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Duplicate

Votes

0

Found in

2018.4

2019.4

2020.3

2020.3.5f1

2021.1

2021.2

Issue ID

1335576

Regression

No

Crash when entering Play Mode while requesting a URL with a redirect + null download handler + logMessageReceivedThreaded

Mono

-

Reproduction steps:
1. Set up a server that redirects to a file download (example setup for macOS is provided in an edit)
2. Open attached project "1027895-Application.logMessageReceivedThreaded crash" and load "SampleScene"
3. Select the "GameObject" GameObject
4. Set the URL variable in the "Script" component to the one from step 1
5. Begin entering and exiting Play Mode repeatedly

Reproducible with: 2018.4.35f1, 2019.4.26f1, 2020.3.8f1, 2021.1.7f1, 2021.2.0a17

First lines of the stack trace:
#0 0x007fff7198a33a in __pthread_kill
#1 0x007fff71911808 in abort
#2 0x00000139bce29b in mono_log_close_logfile
#3 0x00000139be148c in monoeg_g_logv
#4 0x00000139be1569 in monoeg_g_log
#5 0x00000139b53b96 in do_mono_metadata_type_equal

Notes:
- Testing 2019.4 and below versions requires to edit the "Script" script to not contain UnityWebRequest.result as that was not available in those versions
- Usually crashes within the first 10 attempts to enter Play Mode

  1. Response avatar

    Resolution Note (2021.2.X):

    The crash is due to a memory corruption caused by an issue in the Unity internal log handler.

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