Date: Mon, 1 Jan 2001 23:07:22 -0800 (PST) From: paul@treehouse.napa.ca.us To: freebsd-gnats-submit@FreeBSD.org Subject: kern/24018: 4.2-STABLE, 4.0-RELEASE fatal trap 12: page fault while in kernel mode when cp reads some RH 5.2 nfs files Message-ID: <200101020707.f0277MP04825@freefall.freebsd.org> Resent-Message-ID: <200101020710.f027A1d04991@freefall.freebsd.org>
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>Number: 24018 >Category: kern >Synopsis: 4.2-STABLE, 4.0-RELEASE fatal trap 12: page fault while in kernel mode when cp reads some RH 5.2 nfs files >Confidential: no >Severity: critical >Priority: high >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon Jan 01 23:10:01 PST 2001 >Closed-Date: >Last-Modified: >Originator: G. Paul Ziemba >Release: 4.2-STABLE >Organization: >Environment: FreeBSD hairball.treehouse.napa.ca.us 4.2-STABLE FreeBSD 4.2-STABLE #0: Sat Dec 30 12:51:25 PST 2000 paul@hairball.treehouse.napa.ca.us:/usr/obj/usr/src/sys/GPZDEBUG i386 >Description: I have a Redhat 5.2 NFS server, which the FreeBSD 4.2-STABLE system mounts. When I run cp on the FreeBSD system to copy files from the RH5.2 system to the FreeBSD system, on some files FreeBSD crashes. I started with 4.0-RELEASE; upgraded to 4.2-STABLE but no improvement. I got the latest 4.2-STABLE as of Dec 28, 2000. The files being copied are not of unusual size (less than 100KB). I tried objdump --disassemble --source on kernel.debug but I couldn't get the nfs_readrpc code to show up intermixed with the assembler, so couldn't go any further. I'd be happy to dig further if someone could explain what I should do. DDB output (hand-entered): _end(c651d380,c0a06f00,6,c65045e0,c0de1d80) at 0xc4d18140 nfs_readrpc(c651d380,c651bb14,c0de1d80,c4d18000,c651bbe0) at nfs_readrpc+0x556 nfs_getpages(c651bb4c) at nfs_getpages+0x131 vnode_pager_getpages(c652c240,c651bbe0,1,0,c65045e0) at vnode_pager_getpages+0x4e vm_fault(c5fbe080,28064000,1,0,c6504500) at vm_fault+0x4ea etc... >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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