[Bug general/3639] fc6: testTerminateKillKILL(frysk.proc.TestTaskTerminateObserver)

["roland at gnu dot org" <sourceware-bugzilla at sourceware dot org>]

------- Additional Comments From roland at gnu dot org  2007-03-26 21:52 -------
I don't know what's going on in the frysk world, but a couple things from the
kernel side might be relevant.

First is that for death by SIGKILL you may well not see any EXIT event
(WIFSTOPPED, SIGTRAP|PTRACE_EVENT_EXIT<<16).
You will see the death event (WIFSIGNALED) for sure except possibly in the case
of multi-threaded exec by a non-leader thread (when you won't see a report from
the old leader, but the exec'ing thread will change its PID to the leader's).

Second is there is a rare race bug in kernels before the recent test kernels,
that can produce a bogus wait status value.  The bogus value will be a
WIFSTOPPED with WSTOPSIG 0 or some high bits set.  This is a very unlikely race.
 Also, it doesn't produce a WIFEXITED value in the bug case, so it doesn't seem
likely to be relevant to what you are seeing.

Nothing comes to mind with a bogus status of 0x8000.  An _exit(128) produces
that status.

-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=3639

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