[ ssic-linux-Bugs-2009805 ] OpenSSI fails glibc tst-waitid test

Bugs item #2009805, was opened at 2008-07-03 11:18
Message generated for change (Comment added) made by rogertsang
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Category: Process Management
Group: v2.0.0pre2
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: John Hughes (hughesj)
Assigned to: Roger Tsang (rogertsang)
Summary: OpenSSI fails glibc tst-waitid test

Initial Comment:
$ gcc -o tst-waitid tst-waitid.c
$ ./tst-waitid
SIGCHLD for stopped code 128
SIGCHLD for stopped status 7
SIGCHLD for stopped pid 0
waitid WSTOPPED|WNOHANG returned bogus value 396019

On a non-ssi system no output is produced.

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>Comment By: Roger Tsang (rogertsang)
Date: 2008-07-11 03:29

Message:
Logged In: YES 
user_id=1246761
Originator: NO

Some progress...
1. waitid succeeds and return value is pid, but userspace expects 0.
(fixed)
2. returned si_status is correct but is kernel space value with non-zero
__SIGCHLD mask.
3. WCONTINUED option is not supported in VPROC. (fixed; added feature)
4. WEXIT|WNOWAIT hangs because child already signalled p_exiting before
parent waits for event; and parent was waiting for p_exiting event with
spinlocks held. (fixed)
5. check_sigchld() errors.  kernel doesn't fill the signal info for signal
handler.

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