Date: Wed, 06 Nov 2002 22:57:29 -0600 From: "Alan L. Cox" <alc@imimic.com> To: Jeff Roberson <jroberson@chesapeake.net> Cc: Matthew Jacob <mjacob@feral.com>, jeff@freebsd.org, alpha@freebsd.org, alc@freebsd.org, jhb@freebsd.org Subject: Re: alpha: top of tree kernel blooie Message-ID: <3DC9F2B9.50B0B8E4@imimic.com> References: <20021106181122.K1374-100000@mail.chesapeake.net>
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Jeff Roberson wrote: > ... > Alan, do you have any ideas? This particular code path is heavily exercised; and I haven't heard of any similar panics on x86-based systems. These observations make me wonder if there isn't a missing memory barrier between a uma_dbg_alloc() on one CPU and the uma_dbg_free() that's panicing on the other CPU. In other words, how are accesses to us_freelist[] being synchronized? Alan To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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