[CRIU] [PATCH] ptrace: check that process is stopped by SIGTRAP

[Pavel Emelyanov]

On 06/20/2013 12:42 AM, Andrey Vagin wrote:
> All other states are unexpected.
> 
> Signed-off-by: Andrey Vagin <avagin at openvz.org>
> ---
>  parasite-syscall.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/parasite-syscall.c b/parasite-syscall.c
> index 4853cf6..8aed5ee 100644
> --- a/parasite-syscall.c
> +++ b/parasite-syscall.c
> @@ -814,6 +814,11 @@ static int parasite_fini_seized(struct parasite_ctl *ctl)
>  			return -1;
>  		}
>  
> +		if (!WIFSTOPPED(status) || WSTOPSIG(status) != SIGTRAP) {
> +			pr_err("Task is in unexpected state: %x\n", status);
> +			return -1;
> +		}
> +
>  		pr_debug("%d was trapped\n", pid);
>  		if (!WIFSTOPPED(status)) {
>  			pr_err("%d\n", status);
> 


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