I have been testing VIMAGE a lot lately to see how it works an all my test cases works as expected except when I use NFSv4 from an NFS client with a kerrel with VIMAGE enabled.

All other permutations work and this error is very specific. All crashes occurs when trying to read or write to an NFS v4 volume. I have seen it on both i386 and amd64.

#12 0xc0a73c15 in rt_tables_get_rnh (table=0, fam=2)
   at /usr/src/sys/net/route.c:153


static __inline struct radix_node_head **
rt_tables_get_rnh_ptr(int table, int fam)
{
       struct radix_node_head **rnh;

KASSERT(table >= 0 && table < rt_numfibs, ("%s: table out of bounds.",
           __func__));
       KASSERT(fam >= 0 && fam < (AF_MAX+1), ("%s: fam out of bounds.",
           __func__));

       /* rnh is [fib=0][af=0]. */
--->    rnh = (struct radix_node_head **)V_rt_tables;
       /* Get the offset to the requested table and fam. */
       rnh += table * (AF_MAX+1) + fam;

       return (rnh);
}

Any ideas?

Cores and dumps are available plus a vmware player setup to test and debug.


/glz

Dump header from device /dev/da0p3
 Architecture: i386
 Architecture Version: 2
 Dump Length: 105414656B (100 MB)
 Blocksize: 512
 Dumptime: Fri May 27 09:54:13 2011
 Hostname: vserver.test.ismobile.com
 Magic: FreeBSD Kernel Dump
 Version String: FreeBSD 9.0-CURRENT #2: Fri May 27 03:45:23 CEST 2011
   [email protected]:/usr/obj/usr/src/sys/VSERVER
 Panic String: from debugger
 Dump Parity: 3851082861
 Bounds: 3
 Dump Status: good



---
"There is hopeful symbolism in the fact that flags do not wave in a vacuum."
               -- Arthur C. Clarke
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