Re: [PULL 00/48] i386, rust changes for 2024-01-24

[Paolo Bonzini]

On 1/28/25 15:19, Stefan Hajnoczi wrote:
> thread '<unnamed>' panicked at 'already borrowed',
> rust/qemu-api/libqemu_api.rlib.p/structured/cell.rs:450:5
> note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
> fatal runtime error: failed to initiate panic, error 5
>
> https://gitlab.com/qemu-project/qemu/-/jobs/8972076251/artifacts/browse/build/tests/functional/arm/test_arm_tuxrun.TuxRunArmTest.test_armv7be/

Hmm, this one does not reproduce locally.  I've started a
QEMU_CI_AVOCADO_TESTING run.

> Do you want to include a patch that sets RUST_BACKTRACE=1 in the test
> environment so the backtrace is captured in the logs?
Yeah, I'll send one in the next version of the pull request.  The 
BqlRefCell issues are easy to track (because you cannot drop the BQL 
while you have an outstanding borrow, unlike regular Rust RefCells), but 
you do need a backtrace...

Paolo