[CRIU] CRIU tries to dump VFP registers while there is not VFP

[Radostin Stoyanov]

Hi Maikel,

What is your CRIU version, kernel version and CPU architecture?

On 20/08/2019 12:59, Maikel Coenen wrote:
> Hi all,
>
> I’m currently experimenting with CRIU to dump a Java application. Unfortunately, it fails during dump because it tries to save the VFP register while I don’t have a VFP.
>
> (19.642166) Collecting fds (pid: 1031)
> (19.642209) ----------------------------------------
> (19.644116) Found 123 file descriptors
> (19.644203) ----------------------------------------
> (19.656345) Set up parasite blob using memfd
> (19.656457) Putting parasite blob into 0xb6c44000->0xab1b3000
> (19.657000) Dumping GP/FPU registers for 1031
> (19.657078) Error (compel/arch/arm/src/lib/infect.c:78): Can't obtain FPU registers for 1031: Input/output error
> (19.657202) Error (compel/src/lib/infect.c:675): Can't obtain regs for thread 1031
> (19.658142) Error (criu/cr-dump.c:1280): Can't infect (pid: 1031) with parasite
> (19.658964) Unlock network
> (19.659036) Unfreezing tasks into 1
> (19.669074) Error (criu/cr-dump.c:1732): Dumping FAILED.
>
> Did I make a mistake in the build process using Yocto for CRIU or my kernel or is it another setting of CRIU which I must enable/disable?
>
> Kind regards,
>
> Maikel Coenen
>   
>   
>
>
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