Date: Fri, 15 Aug 2003 11:14:31 +0800 From: Eugene Grosbein <eugen@kuzbass.ru> To: Doug White <dwhite@gumbysoft.com> Cc: bug-followup@freebsd.org Subject: Re: bin/55346: /bin/sh eats memory and CPU infinitely Message-ID: <3F3C5017.B1A20E16@kuzbass.ru> References: <20030815003035.A32998@grosbein.pp.ru> <20030814110321.V4145@carver.gumbysoft.com>
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Doug White wrote: > > It seems /bin/sh in 4.8-STABLE has problem with SIGCHLD processing. > > In short, it often fails to process it correctly, zombies float > > around, jobs are not marked as finished in jobtab[] that fills memory > > and takes much CPU to be processed. > > > > Run this one-liner using /bin/sh and see hundreds of zombies: > > > > #!/bin/sh > > while :; do : & done > > Considering that with this script you are forkbombing your machine as > root, I think this falls into the "doctor it hurts when I shoot my foot" > category. Perhaps. Anyway, debug shows that jobtab[] in /bin/sh grows indefinitely in some scenarios and the reason should be SIGCHLD processing problem. Eugenehelp
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