[CRIU] problem using --cgroup-freezer?

[Andrew Vagin]

On Tue, Nov 17, 2015 at 03:15:30PM -0700, Tycho Andersen wrote:
> Hi all,
> 
> When I pass --cgroup-freezer to criu, the dump fails with the
> following:
> 
> (00.001376) Error (ptrace.c:140): Unseizable non-zombie 25021 found, state S, err -1/10
> (00.001424) Error (ptrace.c:140): Unseizable non-zombie 25762 found, state S, err -1/10
> (00.001469) Error (ptrace.c:140): Unseizable non-zombie 26046 found, state S, err -1/10
> (00.001515) Error (ptrace.c:140): Unseizable non-zombie 26134 found, state S, err -1/10
> (00.001560) Error (ptrace.c:140): Unseizable non-zombie 26151 found, state S, err -1/10
> (00.001605) Error (ptrace.c:140): Unseizable non-zombie 26306 found, state S, err -1/10
> (00.001650) Error (ptrace.c:140): Unseizable non-zombie 26357 found, state S, err -1/10
> (00.001694) Error (ptrace.c:140): Unseizable non-zombie 26624 found, state S, err -1/10
> (00.001740) Error (ptrace.c:140): Unseizable non-zombie 26636 found, state S, err -1/10
> (00.001783) Error (ptrace.c:140): Unseizable non-zombie 26692 found, state S, err -1/10
> (00.001833) Error (ptrace.c:140): Unseizable non-zombie 27075 found, state S, err -1/10
> (00.001884) Error (ptrace.c:140): Unseizable non-zombie 27267 found, state S, err -1/10
> (00.001930) Error (ptrace.c:140): Unseizable non-zombie 28380 found, state S, err -1/10
> (00.001997) Error (ptrace.c:140): Unseizable non-zombie 25021 found, state S, err -1/10
> (00.002039) Error (ptrace.c:140): Unseizable non-zombie 25762 found, state S, err -1/10
> (00.002081) Error (ptrace.c:140): Unseizable non-zombie 26046 found, state S, err -1/10
> (00.002123) Error (ptrace.c:140): Unseizable non-zombie 26134 found, state S, err -1/10
> (00.002174) Error (ptrace.c:140): Unseizable non-zombie 26151 found, state S, err -1/10
> (00.002218) Error (ptrace.c:140): Unseizable non-zombie 26306 found, state S, err -1/10
> (00.002260) Error (ptrace.c:140): Unseizable non-zombie 26357 found, state S, err -1/10
> (00.002305) Error (ptrace.c:140): Unseizable non-zombie 26624 found, state S, err -1/10
> (00.002347) Error (ptrace.c:140): Unseizable non-zombie 26636 found, state S, err -1/10
> (00.002390) Error (ptrace.c:140): Unseizable non-zombie 26692 found, state S, err -1/10
> (00.002432) Error (ptrace.c:140): Unseizable non-zombie 27075 found, state S, err -1/10
> (00.002474) Error (ptrace.c:140): Unseizable non-zombie 27267 found, state S, err -1/10
> (00.002517) Error (ptrace.c:140): Unseizable non-zombie 28380 found, state S, err -1/10
> (00.002563) Error (ptrace.c:43): Unable to detach from 23818: No such process

Are all these processes in the freezer cgroup? Are they threads or
thread leaders? Does the freezer group contain sub-groups?

> 
> Thoughts?
> 
> Thanks,
> 
> Tycho
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