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Date:      Wed, 27 May 1998 01:22:17 -0700 (PDT)
From:      ovg@nusun.jinr.ru
To:        freebsd-gnats-submit@FreeBSD.ORG
Subject:   kern/6771: panic: Bad nfs svc reply
Message-ID:  <199805270822.BAA02238@hub.freebsd.org>

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>Number:         6771
>Category:       kern
>Synopsis:       panic: Bad nfs svc reply
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:
>Keywords:
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed May 27 01:20:02 PDT 1998
>Last-Modified:
>Originator:     Vladimir Olshevsky
>Organization:
Joint Institute for Nuclear Research
>Release:        FreeBSD i386 2.2.6
>Environment:
FreeBSD nuraid.jinr.ru 2.2.6-RELEASE FreeBSD 2.2.6-RELEASE #1:
Fri May 22 19:00:11 MSD 1998
ovg@nuraid.jinr.ru:/usr/src/sys/compile/NURAID  i386
>Description:
NFS server had several random crashes, saying on next 
boot "reboot after panic: Bad nfs svc reply"
Here is a kgdb session log:

(kgdb) symbol-file kernel.debug.0
Reading symbols from kernel.debug.0...done.
(kgdb) exec-file /var/crash/kernel.0
(kgdb) core-file /var/crash/vmcore.0
IdlePTD 208000
current pcb at 1ec9ac
panic: Bad nfs svc reply
#0  boot (howto=256) at ../../kern/kern_shutdown.c:266
266                                     dumppcb.pcb_cr3 = rcr3();
(kgdb) where
#0  boot (howto=256) at ../../kern/kern_shutdown.c:266
#1  0xf0110f92 in panic (fmt=0xf01714dd "Bad nfs svc reply")
    at ../../kern/kern_shutdown.c:390
#2  0xf0171acd in nfssvc_nfsd (nsd=0xefbffe8c, argp=0x1770c "", p=0xf252d400)
    at ../../nfs/nfs_syscalls.c:665
#3  0xf0171188 in nfssvc (p=0xf252d400, uap=0xefbfff94, retval=0xefbfff84)
    at ../../nfs/nfs_syscalls.c:344
#4  0xf01bc263 in syscall (frame={tf_es = 39, tf_ds = 39, tf_edi = 8, 
      tf_esi = 4, tf_ebp = -272638388, tf_isp = -272629788, tf_ebx = 1, 
      tf_edx = -272638564, tf_ecx = 0, tf_eax = 155, tf_trapno = 12, 
      tf_err = 7, tf_eip = 10805, tf_cs = 31, tf_eflags = 658, 
      tf_esp = -272638556, tf_ss = 39}) at ../../i386/i386/trap.c:918
#5  0x2a35 in ?? ()
#6  0x107e in ?? ()
(kgdb) up 2
#2  0xf0171acd in nfssvc_nfsd (nsd=0xefbffe8c, argp=0x1770c "", p=0xf252d400)
    at ../../nfs/nfs_syscalls.c:665
665                                     panic("Bad nfs svc reply");
(kgdb) list
660                                     siz += m->m_len;
661                                     m = m->m_next;
662                             }
663                             if (siz <= 0 || siz > NFS_MAXPACKET) {
664                                     printf("mbuf siz=%d\n",siz);
665                                     panic("Bad nfs svc reply");
666                             }
667                             m = mreq;
668                             m->m_pkthdr.len = siz;
669                             m->m_pkthdr.rcvif = (struct ifnet *)0;
(kgdb) print siz
$1 = 50260
(kgdb)

>How-To-Repeat:
Don't know
>Fix:

>Audit-Trail:
>Unformatted:

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