Date: Thu, 19 Oct 2006 18:52:56 -0400 From: Kris Kennaway <kris@obsecurity.org> To: Kazuaki ODA <kaakun@highway.ne.jp> Cc: freebsd-stable@freebsd.org Subject: Re: ps locks up on 6.2-PRERELEASE SMP Message-ID: <20061019225256.GA38237@xor.obsecurity.org> In-Reply-To: <4538009D.6030400@highway.ne.jp> References: <4538009D.6030400@highway.ne.jp>
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[-- Attachment #1 --] On Fri, Oct 20, 2006 at 07:47:57AM +0900, Kazuaki ODA wrote: > Hi, > > I ran the following two scripts simultaneously on 6.2-PRERELEASE SMP box > (cvsup'ed today). > > ---------------------------------------- > #!/bin/sh > > while true; do > ls -lR / > ls_result.txt > done > ---------------------------------------- > > ---------------------------------------- > #!/bin/sh > > while true; do > ls -lR / > ls_result2.txt > done > ---------------------------------------- > > After a while (about 5 minutes), I suspended and killed the both, and > ran "ps". As the result, "ps" locked up. No response and no output. > To make matters worse, I could not login anymore... > > This is 100% reproducable on SMP, but no problem when using Non-SMP kernel. What state is ps in? Press ^T. It's probably a devfs lockup, which should be fixed by changes yet to be merged. Kris [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (FreeBSD) iD8DBQFFOAHGWry0BWjoQKURAm0hAJsE93NBC1GVV/4bbm9aCTfhrsLOhACeNlKq iruCC6DgrBsbv4FcnL9U2hE= =lDlm -----END PGP SIGNATURE-----
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