When traced process receives signal which will be handled, strace may
decide that process is going to die and will detach from this process.
It happens because sigishandled() sometimes incorrectly returns 0 due
to hex string parser bug in parse_sigset_t().
Created attachment 102000 [details]
Fix in upstream.
4.5.7-2 is in rawhide. I'll make an FC2 update release in a few days.
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.