doadump () at pcpu.h:165

Dear All,
I got self reboot my 6.0-CURRENT and able to get 
dumpfile:


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#0  doadump () at pcpu.h:165
        in pcpu.h
(kgdb) bt
#0  doadump () at pcpu.h:165
#1  0xc0526110 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:397
#2  0xc05263bb in panic (fmt=0xc06dc69f "cur != NULL")
    at /usr/src/sys/kern/kern_shutdown.c:553
#3  0xc05bd3ac in tcp_sack_option (tp=0xc2013000, th=0xd443eb14,
    cp=0xc1af2056 "\005\nwF\212|wF\217<F4>\0017\0010\0012\0010\0010\0010\0011\0010\0013\0010\0010\0010\0010\0013\001d\0010\00
11\0010\0010\0012\003ip6\004arpa",
    optlen=0) at /usr/src/sys/netinet/tcp_sack.c:478
#4  0xc05bb327 in tcp_dooptions (tp=0xc2013000, to=0xd443ec78,
    cp=0xc1af2056 "\005\nwF\212|wF\217<F4>\0017\0010\0012\0010\0010\0010\0011\0010\0013\0010\0010\0010\0010\0013\001d\0010\00
11\0010\0010\0012\003ip6\004arpa",
    cnt=10, is_syn=0, th=0xc1af2034) at /usr/src/sys/netinet/tcp_input.c:2647
#5  0xc05b8dfb in tcp_input (m=0xc1ad6600, off0=65800)
    at /usr/src/sys/netinet/tcp_input.c:1085
#6  0xc05adcd5 in ip_input (m=0xc1ad6600)
    at /usr/src/sys/netinet/ip_input.c:776
#7  0xc0597f42 in netisr_processqueue (ni=0xc0783318)
    at /usr/src/sys/net/netisr.c:235
#8  0xc059812a in swi_net (dummy=0x0) at /usr/src/sys/net/netisr.c:348
#9  0xc0513940 in ithread_loop (arg=0xc19db180)
    at /usr/src/sys/kern/kern_intr.c:546
#10 0xc0512dd4 in fork_exit (callout=0xc0513820 <ithread_loop>,
    arg=0xc19db180, frame=0xd443ed38) at /usr/src/sys/kern/kern_fork.c:789
#11 0xc0685e3c in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:208
(kgdb) quit






regards,

-dikshie-