Date: Sun, 30 Nov 2003 16:10:07 -0800 (PST) From: Don Lewis <truckman@FreeBSD.org> To: shoesoft@gmx.net Cc: current@FreeBSD.org Subject: Re: 5.2-BETA panic: page fault Message-ID: <200312010010.hB10A7eF025004@gw.catspoiler.org> In-Reply-To: <1070193640.2995.8.camel@shoeserv.freebsd>
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Can you reproduce this problem without bktr? > #6 0xc06743d8 in calltrap () at {standard input}:94 > #7 0xc0505b53 in _mtx_lock_flags (m=0x0, opts=0, > file=0xc06bfc1d "/usr/src/sys/kern/kern_lock.c", line=228) > at /usr/src/sys/kern/kern_mutex.c:214 > #8 0xc0502b54 in lockmgr (lkp=0xc3b2e028, flags=0, interlkp=0xe4, > td=0xc06bfc1d) at /usr/src/sys/kern/kern_lock.c:228 > #9 0xc0566d87 in vfs_busy (mp=0x0, flags=16, interlkp=0xc075d0e0, > td=0x0) > at /usr/src/sys/kern/vfs_subr.c:527 > #10 0xc056cfff in sync (td=0xc0730dc0, uap=0x0) > #16 0xc06743d8 in calltrap () at {standard input}:94 > #17 0xc0505b53 in _mtx_lock_flags (m=0x0, opts=0, > file=0xc06bfc1d "/usr/src/sys/kern/kern_lock.c", line=228) > at /usr/src/sys/kern/kern_mutex.c:214 > #18 0xc0502b54 in lockmgr (lkp=0xc3b2e028, flags=0, interlkp=0xe4, > td=0xc06bfc1d) at /usr/src/sys/kern/kern_lock.c:228 > #19 0xc0566d87 in vfs_busy (mp=0x0, flags=0, interlkp=0x0, td=0x0) > at /usr/src/sys/kern/vfs_subr.c:527 > #20 0xc056374c in lookup (ndp=0xd7f2ec00) at > /usr/src/sys/kern/vfs_lookup.c:559 You are getting a double panic, with the second happening during the file system sync. The code seems to be be tripping over the same mount list entry each time. Maybe the mount list is getting corrupted. Are you using amd? Print *lkp in the lockmgr() stack frame. You might want to add KASSERT(mp->mnt_lock.lk_interlock !=NULL, "vfs_busy: NULL mount pointer interlock"); at the top of vfs_busy() and right before the lockmgr() call.
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