Date: Thu, 27 Aug 2015 14:04:05 +0200 From: Mark Martinec <Mark.Martinec+freebsd@ijs.si> To: freebsd-stable@freebsd.org Subject: Re: Latest stable (r287104) bash leaves zombies on exit Message-ID: <63a84f64baf8768a551fc6464e8e9526@mailbox.ijs.si> In-Reply-To: <E1ZUucG-000C5n-0C@dilbert.ingresso.co.uk> References: <E1ZUucG-000C5n-0C@dilbert.ingresso.co.uk>
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Pete French wrote: > I updated to stable yesterday, plus updated all my porst to > the latest pecompiled packages, but I am now seeing odd problems > with bash on exit. Sometimes it quits, but leaves a zombie > process... e.g > > PID TT STAT TIME COMMAND > 44308 v0 IW 0:00.00 -bash (bash) > 44312 v0 IW+ 0:00.00 /bin/sh /usr/local/bin/startx -listen_tcp > 44325 v0 IW+ 0:00.00 xinit xterm -listen_tcp -- /usr/local/bin/X :0 > -auth /ho > 44328 v0 IW 0:00.00 /usr/local/bin/wmaker > 44340 v0 S 0:03.35 /usr/local/bin/wmaker --for-real > 49101 0- Z+ 0:02.73 <defunct> > 49314 1- Z+ 0:00.17 <defunct> > 56068 2 Ss 0:00.01 bash > 56498 2 R+ 0:00.00 ps > 56074 3 Is 0:00.01 bash > 56076 3 S+ 0:00.00 mail freebsd-stable@freebsd.org > 56308 4 Is+ 0:00.01 bash > > Thats the current 'ps' on this machine. The bash processes are running > inside an xterm, so am not sure if the issue is with bash or the > terminal. Kind of puzzled! I can reproduce this easily, although not every time. Running 10.2 under KDE, with bash as a default shell: start xterm from a KDE 'konsole', then move to within the xterm and try closing it (^D or exit). More often than not the xterm will block and stay open, the bash process within goes <defunct>. A normal kill of xterm has no effect, although a kill -9 to the xterm blows away the xterm and the init process then clears the bash zombie leftover. Seems like running a simple command like 'date' in xterm before trying to close it does increase the likelihood that xterm will block on exit. > Currently I have to reboot the machine periodicly once I have > accumulated > enough zombies to be annoying. Its not really a long term solution > though. There is no need to reboot, just kill -9 the hanging xterm processes and the init will clear the zombies. Mark
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