Date: Thu, 31 Dec 1998 14:13:46 +0900 From: Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp> To: dfr@nlsystems.com Cc: freebsd-alpha@FreeBSD.ORG Subject: Re: panic in pmap_remove_all Message-ID: <19981231141346S.simokawa@sat.t.u-tokyo.ac.jp> In-Reply-To: Your message of "Tue, 29 Dec 1998 11:19:35 %2B0000 (GMT)" <Pine.BSF.4.01.9812291116270.1813-100000@herring.nlsystems.com> References: <Pine.BSF.4.01.9812291116270.1813-100000@herring.nlsystems.com>
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dfr> > panic: pmap_remove_all: pv_table for 858a000 is inconsistent dfr> > db> trace dfr> > Debugger..ng() at Debugger..ng+0x24 dfr> > panic..ng() at panic..ng+0xf0 dfr> > pmap_remove_all..ng() at pmap_remove_all..ng+0x144 dfr> > pmap_page_protect..ng() at pmap_page_protect..ng+0x2c dfr> > vm_page_cache..ng() at vm_page_cache..ng+0xd4 dfr> > vm_pageout_scan..ng() at vm_pageout_scan..ng+0x3ac dfr> > vm_pageout..ng() at vm_pageout..ng+0x2e0 dfr> > kproc_start..ng() at kproc_start..ng+0x54 dfr> > exception_return() at exception_return dfr> dfr> These bugs are extremely hard to find (it usually involves adding extra dfr> instrumentation to pmap and spending long periods of time in the dfr> debugger). I doubt if I can fix it without being able to reproduce it dfr> locally. Can you give me an idea of what kind of workload triggers the dfr> panic? I was building packages under MFS. The machine has one 9GB disk(1GB for swap) and 512MB memory. All partitions use softupdates. I repeated the following procedure for 'each' port. (mount MFS on /chroot) 1) extract FreeBSD core distribution with tar under /chroot 2) chroot to /chroot and pkg_add dependent packages, then make package. 3) delete all files under /chroot /chroot occupies around 300MB - 600MB. Do you think this is alpha specific problem? /\ Hidetoshi Shimokawa \/ simokawa@sat.t.u-tokyo.ac.jp PGP public key: finger -l simokawa@sat.t.u-tokyo.ac.jp To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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