Rework the status flag management of s390x. #106
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lrzlin
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When running under seccomp, sometimes sysexit handlers fail to execute. This is possible when the first syscall a process makes, before seccomp is enabled, gets handled in the SIGTRAP path. However the conditions for this to occur seem fairly random, so we fork out many processes to make it likely that at least some hit this problem. This problem may be related to issue zherczeg#106.
lrzlin
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sysexit events handler to be missed if sysenter is handled during a syscall-enter-stop event instead of the seccomp ptrace event. This may be a (at least partial) fix for issue zherczeg#106.
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I tested the patch with PCRE2, it worked.