in_pcb crash on 7.2 RELEASE 64bits

[Jerry Toung]

Hi List,
may be someone has seen this  already before I dig into the issue myself. A
consistent crash
with the following trace.



Unread portion of the kernel message buffer:

Fatal trap 12: page fault while in kernel mode
cpuid = 4; apic id = 04
fault virtual address   = 0x164
fault code              = supervisor read data, page not present
instruction pointer     = 0x8:0xffffffff806016c8
stack pointer           = 0x10:0xfffffffefc079840
frame pointer           = 0x10:0xc0000000
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         = 1352 (gated)
trap number             = 12
panic: page fault
cpuid = 4
Uptime: 5m37s
Dumping 4093 MB (4 chunks)
  chunk 0: 1MB (156 pages) ... ok
  chunk 1: 3326MB (851284 pages) 3310 3294 3278 3262 3246 3230 3214 3198
3182 3166 3150 3134 3118 3102 3086 3070 3054 3038 3022 3006 2990 2974 2958
2942 2926 2910 2894 2878 2862 2846 2830 2814 2798 2782 2766 2750 2734 2718
2702 2686 2670 2654 2638 2622 2606 2590 2574 2558 2542 2526 2510 2494 2478
2462 2446 2430 2414 2398 2382 2366 2350 2334 2318 2302 2286 2270 2254 2238
2222 2206 2190 2174 2158 2142 2126 2110 2094 2078 2062 2046 2030 2014 1998
1982 1966 1950 1934 1918 1902 1886 1870 1854 1838 1822 1806 1790 1774 1758
1742 1726 1710 1694 1678 1662 1646 1630 1614 1598 1582 1566 1550 1534 1518
1502 1486 1470 1454 1438 1422 1406 1390 1374 1358 1342 1326 1310 1294 1278
1262 1246 1230 1214 1198 1182 1166 1150 1134 1118 1102 1086 1070 1054 1038
1022 1006 990 974 958 942 926 910 894 878 862 846 830 814 798 782 766 750
734 718 702 686 670 654 638 622 606 590 574 558 542 526 510 494 478 462 446
430 414 398 382 366 350 334 318 302 286 270 254 238 222 206 190 174 158 142
126 110 94 78 62 46 30 14 ... ok
  chunk 2: 1MB (1 pages) ... ok
  chunk 3: 768MB (196607 pages) 753 737 721 705 689 673 657 641 625 609 593
577 561 545 529 513 497 481 465 449 433 417 401 385 369 353 337 321 305 289
273 257 241 225 209 193 177 161 145 129 113 97 81 65 49 33 17
#0  doadump () at pcpu.h:195
195     pcpu.h: No such file or directory.
        in pcpu.h
(kgdb) bt
#0  doadump () at pcpu.h:195
#1  0x0000000000000004 in ?? ()
#2  0xffffffff80521d59 in boot (howto=260) at
/usr/src/sys/kern/kern_shutdown.c:418
#3  0xffffffff80522162 in panic (fmt=0x104 <Address 0x104 out of bounds>)
    at /usr/src/sys/kern/kern_shutdown.c:574
#4  0xffffffff807e6a93 in trap_fatal (frame=0xffffff00038a06e0, eva=Variable
"eva" is not available.
)
    at /usr/src/sys/amd64/amd64/trap.c:757
#5  0xffffffff807e6e65 in trap_pfault (frame=0xfffffffefc079790, usermode=0)
    at /usr/src/sys/amd64/amd64/trap.c:673
#6  0xffffffff807e77a4 in trap (frame=0xfffffffefc079790)
    at /usr/src/sys/amd64/amd64/trap.c:444
#7  0xffffffff807cb90e in calltrap () at
/usr/src/sys/amd64/amd64/exception.S:209
#8  0xffffffff806016c8 in in_pcbconnect_setup (inp=0xffffff001439d6c0,
nam=Variable "nam" is not available.
)
    at /usr/src/sys/netinet/in_pcb.c:833
#9  0xffffffff806795a1 in udp_send (so=Variable "so" is not available.
) at /usr/src/sys/netinet/udp_usrreq.c:961
#10 0xffffffff8057d1a1 in sosend_dgram (so=0xffffff00143442d0,
addr=0xffffff0003b6e530, uio=Variable "uio" is not available.
)
    at /usr/src/sys/kern/uipc_socket.c:1059
#11 0xffffffff80581d77 in kern_sendit (td=0xffffff00038a06e0, s=22,
mp=0xfffffffefc079af0,
    flags=4, control=0x0, segflg=Variable "segflg" is not available.
) at /usr/src/sys/kern/uipc_syscalls.c:805
#12 0xffffffff80584d4f in sendit (td=0xffffff00038a06e0, s=22,
mp=0xfffffffefc079af0, flags=4)
    at /usr/src/sys/kern/uipc_syscalls.c:742
#13 0xffffffff80584de9 in sendmsg (td=0xffffff00038a06e0,
uap=0xfffffffefc079bf0)
    at /usr/src/sys/kern/uipc_syscalls.c:938
#14 0xffffffff807e70e7 in syscall (frame=0xfffffffefc079c80)
    at /usr/src/sys/amd64/amd64/trap.c:900
#15 0xffffffff807cbb1b in Xfast_syscall () at
/usr/src/sys/amd64/amd64/exception.S:330
#16 0x0000000801c1a00c in ?? ()
Previous frame inner to this frame (corrupt stack?)
(kgdb) f 8
#8  0xffffffff806016c8 in in_pcbconnect_setup (inp=0xffffff001439d6c0,
nam=Variable "nam" is not available.
)
    at /usr/src/sys/netinet/in_pcb.c:833
833     /usr/src/sys/netinet/in_pcb.c: No such file or directory.
        in /usr/src/sys/netinet/in_pcb.c
(kgdb) p *ia
Cannot access memory at address 0x0
(kgdb) i loc
ia = (struct in_ifaddr *) 0x0
oinp = Variable "oinp" is not available.
(kgdb)


thanks,
Jerry