panic: solaris assert: sa.sa_magic == 0x2F505A

[Sergey V. Dyatko]

Hi,

today I got panic on my laptop, running head, amd64 r245462.
unfortunately I don't know how it can be reproduced so I will be
grateful for any hints

full core-file can be found here:
http://svn.freebsd.by/files/core20130117.txt

Konstantin, I added you to CC because you was last touched
zfs_vfsops.c, I'm sorry if I was wrong :)

-- 
wbr, tiger