https://bugs.winehq.org/show_bug.cgi?id=54115
--- Comment #10 from François Gouget fgouget@codeweavers.com --- This error is also happening during WineTest runs.
For instance in this 32-bit GitLab CI WineTest run: https://gitlab.winehq.org/wine/wine/-/jobs/22517
wine: Assertion failed at address F7F4F559 (thread 04e4), starting debugger... wine client error:4e4: write: Bad file descriptor wine: Unhandled page fault on write access to 00000000 at address 6AB23C94 (thread 0518), starting debugger... wine client error:350: wine: Unhandled page fault on write access to 00000000 at address 6AB23C94 (thread 0188), starting debugger... wine: Unhandled page fault on write access to 00000000 at address 6AB1CF25 (thread 03bc), starting debugger... wine client error:2b4: write: Bad file descriptor
Given the proximity to unhandled exceptions this one may be related to bug 45070.
This also happens on the TestBot but apparently only in the Windows-on-Windows cases (whether new or old style, see the task.log files). Those are not always near unhandled exceptions and one can also get a "partial write" instead of a "bad descriptor":
wine client error:240: partial write 49152