UFS related panic (daily <-> find)

[rank1seeker at gmail.com]

> > 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