kern/132068: [zfs] page fault when using ZFS over NFS on 7.1-RELEASE/amd64

[Edward Fisk]

The following reply was made to PR kern/132068; it has been noted by GNATS.

From: "Edward Fisk" <7ogcg7g02 at sneakemail.com>
To: bug-followup at freebsd.org
Cc:  
Subject: Re: kern/132068: [zfs] page fault when using ZFS over NFS on
 7.1-RELEASE/amd64
Date: 5 Mar 2009 11:50:41 -0000

 The machine did a panic earlier, but was unfortunately unable to do a dump.
 
 ------
 panic: Bad link elm 0xffffff014f3e2400 prev->next != elm
 cpuid = 3
 KDB: stack backtrace:
 db_trace_self_wrapper() at db_trace_self_wrapper+0x2a
 panic() at panic+0x182
 xprt_unregister_locked() at xprt_unregister_locked+0xad
 xprt_unregister() at xprt_unregister+0x2c
 svc_run_internal() at svc_run_internal+0x42f
 svc_run() at svc_run+0x94
 nfssvc_nfsd() at nfssvc_nfsd+0xa2
 nfssvc() at nfssvc+0x12d
 syscall() at syscall+0x1e7
 Xfast_syscall() at Xfast_syscall+0xab
 --- syscall (155, FreeBSD ELF64, nfssvc), rip = 0x800695c4c, rsp = 0x7fffffffe8e8, rbp = 0 ---
 Uptime: 3d4h21m8s
 Physical memory: 16368 MB
 Dumping 3849 MB: 3834 3818 3802 3786 3770 3754 3738 3722 3706 3690Error dumping block 0x0
 
 ** DUMP FAILED (ERROR 5) **
 aac0: shutting down controller...FAILED.
 Automatic reboot in 15 seconds - press a key on the console to abort
 Rebooting...
 ------
 
 Any idea as to why it was unable to complete the crash dump?