[distcc] Remote compiling failure for tons of kernel files

[Qu Wenruo]

Hi,

Recently I tried to re-setup my aarch64 distcc environment, as 
previously it failed to do a proper remote compiling.

But still, it failed to do a lot of compiling on the remove server.

The setup looks like this:

Client:        Archlinux ARM, GCC 12.1.0, distcc 3.4
Volunteer:     Archlinux ARM, GCC 12.1.0, distcc 3.4

Volunteer should has the correct link setup.
(They all go with compilers like aarch64-unknown-linux-gnu-gcc)

Kernel source: v6.2-rc kernel

And the result is tons of error like this:

distcc[15204] ERROR: compile drivers/pwm/sysfs.c on 172.16.0.220:3632/6 
failed
distcc[15204] (dcc_build_somewhere) Warning: remote compilation of 
'drivers/pwm/sysfs.c' failed, retrying locally
distcc[15204] Warning: failed to distribute drivers/pwm/sysfs.c to 
172.16.0.220:3632/6, running locally instead
distcc[14806] (dcc_please_send_email_after_investigation) Warning: 
remote compilation of 'net/core/filter.c' failed, retried locally and 
got a different result.

The distccd only shows the summary of the failure on remote server: 
(debug log level)

distccd[1766] aarch64-unknown-linux-gnu-gcc arch/arm64/mm/fault.c on 
localhost failed
distccd[1766] job complete
distccd[1766] (dcc_job_summary) client: 172.16.0.150:38012 COMPILE_ERROR 
exit:1 sig:0 core:0 ret:0 time:2513ms aarch64-unknown-linux-gnu-gcc 
arch/arm64/mm/fault.c

Not mentioning what caused the compiling failure.

Is there any way to properly debug the behavior?

Thanks,
Qu