Date: Fri, 26 Jul 2013 15:04:42 +0200 From: rank1seeker@gmail.com To: "John Baldwin" <jhb@freebsd.org> Cc: hackers@freebsd.org Subject: Re: UFS related panic (daily <-> find) Message-ID: <20130726.130442.843.4@DOMY-PC> In-Reply-To: <201307221329.47690.jhb@freebsd.org> References: <20130719.174511.786.3@DOMY-PC> <201307221329.47690.jhb@freebsd.org>
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> > I had 2 panics: (Both occured at 3 AM, so had to be daily task)
> >
> > First (Jul 2 03:06:50 2013):
> > --
> > Fatal trap 12: page fault while in kernel mode
> > fault virtual address = 0x19
> > fault code = supervisor read, page not present
> > instruction pointer = 0x20:0xc06caf34
> > stack pointer = 0x28:0xe76248fc
> > frame pointer = 0x28:0xe7624930
> > code segment = base 0x0, limit 0xfffff, type 0x1b
> > = DPL 0, pres 1, def32 1, gran 1
> > processor eflags = interrupt enabled, resume, IOPL = 0
> > current process = 76562 (find)
> > trap number = 12
> > panic: page fault
> > Uptime: 23h0m41s
> > Physical memory: 1014 MB
> > Dumping 186 MB: 171 155 139 123 107 91 75 59 43 27 11
> >
> > #7 0xc06caf34 in cache_lookup_times (dvp=0xc784a990, vpp=0xe7624ae8,
> > cnp=0xe7624afc, tsp=0x0, ticksp=0x0) at
> /usr/src/sys/kern/vfs_cache.c:547
>
> Can you go up to this frame and do 'l'?
>
> --
> John Baldwin
Sure,
---------
(kgdb) up 7
#7 0xc06caf34 in cache_lookup_times (dvp=0xc784a990, vpp=0xe7624ae8, cnp=0xe7624afc, tsp=0x0, ticksp=0x0) at /usr/src/sys/kern/vfs_cache.c:547
547 numchecks++;
---------
(kgdb) l
542 }
543
544 hash = fnv_32_buf(cnp->cn_nameptr, cnp->cn_namelen, FNV1_32_INIT);
545 hash = fnv_32_buf(&dvp, sizeof(dvp), hash);
546 LIST_FOREACH(ncp, (NCHHASH(hash)), nc_hash) {
547 numchecks++;
548 if (ncp->nc_dvp == dvp && ncp->nc_nlen == cnp->cn_namelen &&
549 !bcmp(nc_get_name(ncp), cnp->cn_nameptr, ncp->nc_nlen))
550 break;
551 }
---------
Domagoj Smolčić
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