[Bug 205743] null pointer dereference in PF running a vimage jail

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=205743

--- Comment #6 from gila <ing.gila at gmail.com> ---
(In reply to Bjoern A. Zeeb from comment #5)

I pasted it in the comment -- right above where I say it panics in
pfsync_clear_states() did that not come across? 

Let me repast the relevant frames:

#12 0xffffffff80f71337 in calltrap () at
/usr/src/sys/amd64/amd64/exception.S:234
#13 0xffffffff80d22752 in pfsync_clear_states (creatorid=<value optimized out>,
ifname=0x0)
    at /usr/src/sys/netpfil/pf/if_pfsync.c:1973
#14 0xffffffff80d3bac5 in pfioctl (dev=<value optimized out>, cmd=<value
optimized out>, addr=0xfffff80006f62500 "",
    flags=<value optimized out>, td=<value optimized out>) at
/usr/src/sys/netpfil/pf/pf_ioctl.c:1692
#15 0xffffffff8095a9ab in devfs_ioctl_f (fp=0xfffff800068e12d0, com=0xc0e04412,
data=0xfffff80006f62500,
    cred=<value optimized out>, td=0xfffff8004649e000) at
/usr/src/sys/fs/devfs/devfs_vnops.c:813
#16 0xffffffff80b00a3c in kern_ioctl (td=0xfffff8004649e000, fd=<value
optimized out>, com=0x0,

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