test_efi_selftest occasionally fails on qemu-x86?

[Heinrich Schuchardt]

On 12/22/20 6:00 AM, Bin Meng wrote:
> Hi,
>
> Please check the log:
> https://dev.azure.com/bmeng/GitHub/_build/results?buildId=302&view=logs&j=cf9e8018-ed89-5c32-5567-a8524d857521&t=4197aefe-2a0c-53e5-5744-78f78ce6022b
>
> Re-run the pipeline with the same commit, the tests pass.
> https://dev.azure.com/bmeng/GitHub/_build/results?buildId=304&view=logs&j=cf9e8018-ed89-5c32-5567-a8524d857521&t=4197aefe-2a0c-53e5-5744-78f78ce6022b
>
> There might be some instability on qemu-x86 with efi_selftest. Any ideas?
>
> Regards,
> Bin
>

Hello Bin,

The failing routine is

      u_boot_console.restart_uboot()

after the UEFI tests were completed successfully.

This is the function:

     def restart_uboot(self):
         """Shut down and restart U-Boot."""
         self.cleanup_spawn()
         self.ensure_spawned()

In ensure_spawned() we get the exception:

     Exception: Bad pattern found on console: main_signon

ensure_spawned() complains because it sees the main_signon message a
second time.

This is the console output:

     U-Boot 2021.01-rc4-23431-g6ef1b75087 (Dec 22 2020 - 03:07:46 +0000)

     CPU:   QEMU Virtual CPU version 2.5+
     DRAM:  128 MiB
     unable to find cpus device
     Warning: MP init failure

     U-Boot 2021.01-rc4-23431-g6ef1b75087 (Dec 22 2020 - 03:07:46 +0000)

So obviously U-Boot is crashing during the boot process after x86_mp_init().

The same error has shown up on Gitlab as reported by Simon. Cf.

https://gitlab.denx.de/u-boot/custodians/u-boot-dm/-/jobs/190746/raw

I suggest that you add

     #define DEBUG 1

at the top of common.h to close in on the location of the crash.

Best regards

Heinrich