Reproducible Kernel Panic on 8.1-STABLE [SEC=UNCLASSIFIED]

[Wilkinson, Alex]

Hi all,

I have come across a bug that triggers a kernel panic on 8.1-STABLE(r213395) through the
use of /usr/ports/sysutils/fusefs-sshfs. Typically i do an sshfs mount as such:

   #sshfs username at hostname:/home/username local_mountpoint/

This mounts the remote filesystem fine. However, when i edit and save a file in
say vi on the remote sshfs i get the following panic everytime:


   FreeBSD/amd64 (hostname.com) (ttyu0)
   
   login:
   
   Fatal trap 12: page fault while in kernel mode
   cpuid = 2; apic id = 02
   fault virtual address   = 0x0
   fault code              = supervisor read instruction, page not present
   instruction pointer     = 0x20:0x0
   stack pointer           = 0x28:0xffffff80e9d1d9d0
   frame pointer           = 0x28:0xffffff80e9d1db50
   code segment            = base 0x0, limit 0xfffff, type 0x1b
                           = DPL 0, pres 1, long 1, def32 0, gran 1
   processor eflags        = interrupt enabled, resume, IOPL = 0
   current process         = 1749 (vim)
   trap number             = 12
   panic: page fault
   cpuid = 2
   Uptime: 17m11s
   Physical memory: 8096 MB
   Dumping 1591 MB:

It then seems to hang and not actually do a dump and i need to physically reset
the box.

If there is anything i can do to further assist in debugging please let me know.

   -Alex

IMPORTANT: This email remains the property of the Department of Defence and is subject to the jurisdiction of section 70 of the Crimes Act 1914. If you have received this email in error, you are requested to contact the sender and delete the email.