7_STABLE panic()

[Egerváry Gergely <gergely%egervary.hu@localhost>]

Before send_pr, let's have a look: probably GRE or IPFilter related?
Upstream connection is on a GRE tunnel.

0xffffffff804ce60f in cpu_reboot (howto=howto@entry=260,
bootstr=bootstr@entry=0x0)
    at ../../../../arch/amd64/amd64/machdep.c:671
671                     dumpsys();
(gdb) bt
#0  0xffffffff804ce60f in cpu_reboot (howto=howto@entry=260,
bootstr=bootstr@entry=0x0)
    at ../../../../arch/amd64/amd64/machdep.c:671
#1  0xffffffff8066c1e2 in vpanic (fmt=fmt@entry=0xffffffff80a35300
"m_makewritable: length changed",
    ap=ap@entry=0xfffffe8040005c70) at ../../../../kern/subr_prf.c:340
#2  0xffffffff8066c29d in panic (fmt=fmt@entry=0xffffffff80a35300
"m_makewritable: length changed")
    at ../../../../kern/subr_prf.c:256
#3  0xffffffff806f4d2c in m_makewritable
(mp=mp@entry=0xfffffe8040005d30, off=off@entry=0, len=len@entry=-1,
    how=how@entry=1) at ../../../../kern/uipc_mbuf.c:1355
#4  0xffffffff8040893c in ipf_check_wrapper (arg=<optimized out>,
mp=0xfffffe8040005d30, ifp=0xfffffe8116321008,
    dir=2) at ../../../../external/bsd/ipf/netinet/ip_fil_netbsd.c:186
#5  0xffffffff8059a2ee in pfil_run_hooks (ph=<optimized out>,
mp=mp@entry=0xfffffe8040005dd0,
    ifp=ifp@entry=0xfffffe8116321008, dir=dir@entry=2) at
../../../../net/pfil.c:266
#6  0xffffffff80425a3a in ip_output (m0=m0@entry=0xfffffe80a5751400) at
../../../../netinet/ip_output.c:480
#7  0xffffffff805c5ee2 in rip_output (m=m@entry=0xfffffe80a5751400) at
../../../../netinet/raw_ip.c:389
#8  0xffffffff805c603d in rip_send (l=<optimized out>,
control=<optimized out>, nam=0x0, m=0xfffffe80a5751400,
    so=0xfffffe810e4c2498) at ../../../../netinet/raw_ip.c:781
#9  rip_send_wrapper (a=0xfffffe810e4c2498, b=0xfffffe80a5751400, c=0x0,
d=<optimized out>, e=<optimized out>)
    at ../../../../netinet/raw_ip.c:850
#10 0xffffffff8033aa41 in gre_sosend (top=0xfffffe80a5751400,
so=0xfffffe810e4c2498)
    at ../../../../net/if_gre.c:536
#11 greintr (arg=0xfffffe810ae10008) at ../../../../net/if_gre.c:221
#12 0xffffffff804a3be4 in softint_execute (l=<optimized out>,
s=<optimized out>, si=<optimized out>)
    at ../../../../kern/kern_softint.c:589
#13 softint_dispatch (pinned=<optimized out>, s=4) at
../../../../kern/kern_softint.c:871
#14 0xffffffff8011402f in Xsoftintr ()

thanks,
--
Gergely EGERVARY