kern/148018: flowtable crashes on ia64

[Michael Moll]

>Number:         148018
>Category:       kern
>Synopsis:       flowtable crashes on ia64
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Jun 20 18:50:01 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator:     Michael Moll
>Release:        9.0-CURRENT
>Organization:
>Environment:
FreeBSD titanic.kvedulv.de 9.0-CURRENT FreeBSD 9.0-CURRENT #0: Sun Jun 20 19:31:33 CEST 2010     root at titanic.kvedulv.de:/usr/obj/usr/src/sys/TITANIC  ia64
>Description:
I'm running FreeBSD/ia64 on a HP rx2600. When booting the latest CURRENT the machine crashes while bringing up the ethernet interface (bge0):   

fatal kernel trap (cpu 0):

    trap vector = 0x1e (Unaligned Reference)
    cr.iip      = 0xe0000000049219c0
    cr.ipsr     = 0x1010080a6010 (mfl,ic,i,dt,dfh,rt,cpl=0,it,ri=0,bn)
    cr.isr      = 0x80200000000 (code=0,vector=0,w,ei=0,ed)
    cr.ifa      = 0xe000000011490b7c
    curthread   = 0xe00000001085b2c0

        pid = 12, comm = swi4: clock

[ thread pid 12 tid 100004 ]
Stopped at      flowtable_insert+0x410: [M0]    st8 [r14]=r15
db> bt
Tracing pid 12 tid 100004 td 0xe00000001085b2c0
flowtable_insert(0xe000000010b2e000, 0xff35aa3f69b22212, 0xa0000000755651c0, 0x0, 0xa000000075565210, 0x202) at flowtable_insert+0x410
flowtable_lookup(0xe000000010b2e000, 0xa000000075565240, 0xa0000000755652c0, 0x0, 0xe000000010ef3770) at flowtable_lookup+0xef0
flowtable_lookup_mbuf(0xe000000010b2e000, 0xe000000011485a00, 0x0, 0x1c, 0xe000000011485ad8, 0xa0000000755652c0) at flowtable_lookup_mbuf+0xa00
ip6_output(0xe000000011485ad8, 0xe00000000515d458, 0xa000000075565350, 0x1, 0xa000000075565490, 0xa0000000755654b0, 0x0) at ip6_output+0xf10
mld_dispatch_packet(0xe000000011485d00) at mld_dispatch_packet+0x720
mld_dispatch_queue(0xa0000000755654d0, 0x0, 0xa0000000755654e0, 0xa0000000755654d8, 0xe000000004ad0ac0, 0xf24) at mld_dispatch_queue+0xa0
mld_fasttimo() at mld_fasttimo+0xf00
icmp6_fasttimo(0xe00000000488bde0, 0x30b, 0xe0000000047a29b0) at icmp6_fasttimo+0x20
pffasttimo(0xe000000004f27158, 0xe000000004f27488, 0xe000000004f27450, 0xe0000000047e6f10) at pffasttimo+0xc0
softclock(0xe000000004f96ff0, 0x100, 0xe0000000051574b8, 0x40e7) at softclock+0x520
intr_event_execute_handlers(0xe000000010855120, 0xe00000001084bb98, 0xe00000001084f400, 0x0) at intr_event_execute_handlers+0x280
ithread_loop(0xe0000000106bf520, 0xe00000001084bb9c, 0xe00000001084bb98, 0xe00000001084bb00) at ithread_loop+0x190
fork_exit(0xe000000004da7b50, 0xe0000000106bf520, 0xa000000075565550) at fork_exit+0x110
enter_userland() at enter_userland

>How-To-Repeat:
Use flowtables on ia64 (and probaly on other strong alignment architectures).
>Fix:
Not a fix, but without "options FLOWTABLE" in the kernel configuration the system comes up normally.

>Release-Note:
>Audit-Trail:
>Unformatted: