I'm seeing something similar, also with the 8-20 patch, in case this is useful
information.
I have a java scheduler that kicks off some ksh processes. When the ksh in
question does things similar to this:
if [[ $(uname -s | cut -c 1-4) = "UWIN" ]]; then
sep=";"
else
sep=":"
fi
I often end up with a hung ksh; usually I see cut.exe but occasionally
uname.exe in the process list (from ps or task manager). If I kill these,
things proceed for a while until it hangs again. The process output contains a
lot of this:
2012-09-11+16:46:11 6124 195971 1 2304 276 0 (ksh) spawnve.c:2416:
VirtualAllocEx addr=0x02232000 size=253952 [487:Attempt to access invalid
address]
2012-09-11+16:46:11 6124 195971 1 2304 276 0 (ksh) spawnve.c:2968:
copytochild minfo failed [487:Attempt to access invalid address]
2012-09-11+16:46:11 6124 195971 1 2304 276 0 (ksh) spawnve.c:4525:
parent_fork failed - try again maxtry=24 exitval=51
2012-09-11+16:46:11 6124 195971 1 2304 276 0 (ksh) spawnve.c:2416:
VirtualAllocEx addr=0x02232000 size=253952 [487:Attempt to access invalid
address]
2012-09-11+16:46:11 6124 195971 1 2304 276 0 (ksh) spawnve.c:2968:
copytochild minfo failed [487:Attempt to access invalid address]
Also, sometimes I see a bunch of init.exe processes that seem to be stuck in
the process list.
Without the pipe, it's a lot more successful.
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Jon Pile
Sent: Thursday, September 06, 2012 9:23 PM
To: FELLIN, JEFFREY K (JEFF)
Cc: [email protected]
Subject: Re: [uwin-users] Deadlock in $( foo | bar )
>> $ uname -a
>> UWIN-XP dt-Fellin 5.0/5.1 2012-08-20 i686 x86 32/32 UWIN
>
>
> Thanks Jeff, I can confirm the 08/20 beta fixes it for me too. On to
> the next thing :)
Looks like there may still be a race condition in there. The following
hangs eventually, usually every 30 or so iterations. The record is 82
tries before hanging:
$ typeset -i i=0
$ while [ i -lt 1000 ]
> do
> i=$i+1
> print $i
> runcmd "ksh -c /tmp/rep.ksh"
> done
$ uname -a
UWIN-W7 jpile-w510 5.0/6.1 2012-08-20 i686-64 x64 64/64 UWIN
-jP
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