Date: Wed, 23 Feb 2005 10:45:52 +0200 From: Ruslan Ermilov <ru@freebsd.org> To: Alan Cox <alc@cs.rice.edu> Cc: Peter Grehan <grehan@freebsd.org> Subject: Re: mutex lock assertion panic in vm_page_free() on sparc64 Message-ID: <20050223084552.GA88626@ip.net.ua> In-Reply-To: <20050222212941.GU3121@noel.cs.rice.edu> References: <20050222110318.GA41460@ip.net.ua> <20050222142710.GA42507@ip.net.ua> <20050222190904.GC26262@cs.rice.edu> <200502221422.56994.jkim@niksun.com> <20050222212941.GU3121@noel.cs.rice.edu>
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[-- Attachment #1 --] Hi Alan, On Tue, Feb 22, 2005 at 03:29:41PM -0600, Alan Cox wrote: > On Tue, Feb 22, 2005 at 02:22:56PM -0500, Jung-uk Kim wrote: > > > > FYI, anholt says 'backing vm/uma_core.c to r1.114 has fixed the > > issue': > > > > http://docs.freebsd.org/cgi/mid.cgi?1109089389.4267.7.camel > > Ok, thanks. I'd still like to see the contents of the offending > page. When UMA overwrites the page's object field with a slab > pointer, it sets a flag within the page. I'd very much like > to know if this flag is set. > I had trouble saving a kernel core -- 6 or 7 times I tried this, it resulted in the same panic. Finally, I gave up and reverted to vm/uma_core.c,v 1.114, this game me a working savecore. Unfortunately, either kdgb(1) doesn't work on sparc64 at the moment, or this core is troublesome -- it would endlessly print this: kgdb: kvm_read: invalid address (203d2025) kgdb: kvm_read: invalid address (6e666f20) kgdb: kvm_read: invalid address (203d2025) kgdb: kvm_read: invalid address (6e666f20) kgdb: kvm_read: invalid address (203d2025) kgdb: kvm_read: invalid address (6e666f20) kgdb: kvm_read: invalid address (203d2025) kgdb: kvm_read: invalid address (6e666f20) ... At least I can confirm that reverting to rev. 1.114 fixes a problem. Cheers, -- Ruslan Ermilov ru@FreeBSD.org FreeBSD committer [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (FreeBSD) iD8DBQFCHELAqRfpzJluFF4RAjaOAJ4/10rDbN8ykwxzYyGxGLNHA+dA0gCfXu6O hRFfZjXYQ8utZ01NSvpbGLQ= =5Y1f -----END PGP SIGNATURE-----help
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