recent GIANT changes causes panic in ifconf()

From: Vladimir Grebenschikov (vova_at_express.ru)
Date: 04/19/04

  • Next message: Hajimu UMEMOTO: "Re: Page fault in rt_newaddrmsg on gif0 destruction" 
    To: current@freebsd.org
Date: Mon, 19 Apr 2004 14:09:38 +0400

    Hi

    System panics while boot on interface configuration from dhclient for
    wi0 interface.

    ...
    Firewall rules loaded, starting divert daemons:.
    net.inet.ip.fw.enable: 1 -> 1
    Starting dhclient
                    .

    Fatal trap 12: page fault while in kernel mode
    fault virtual address = 0x0
    fault code = supervisor read, page not present
    instruction pointer = 0x8:0xc05675e0
    stack pointer = 0x10:0xcb50eb8c
    frame pointer = 0x10:0xcb50ebdc
    code segment = base 0x0, limit 0xfffff, type 0x1b
                            = DPL 0, pres 1, def32 1, gran 1
    processor eflags = interrupt enabled, resume, IOPL = 0
    current process = 234 (dhclient)
    kernel: type 12 trap, code=0
    Stopped at ifconf+0x140: cmpb $0x10,0(%ebx)
    db> tr
    ifconf(c0086924,cb50ec58,0,c25173f0,cb50ec0c) at ifconf+0x140
    ifioctl(c26804b0,c0086924,cb50ec58,c25173f0,0) at ifioctl+0x31
    soo_ioctl(c25fd990,c0086924,cb50ec58,c13b0e00,c25173f0) at
    soo_ioctl+0x19c
    ioctl(c25173f0,cb50ed14,c,6,3) at ioctl+0x5c8
    syscall(2f,2f,2f,bfbfef64,0) at syscall+0x2f0
    Xint0x80_syscall() at Xint0x80_syscall+0x1d
    --- syscall (54, FreeBSD ELF32, ioctl), eip = 0x2810704b, esp =
    0xbfbfe55c, ebp = 0xbfbfee08 ---

    Such panic happens only on boot, if I load if_wi.ko after boot and then
    run dhclient no panic occurred.

    More details in kern/65752 

    -- 
Vladimir B. Grebenschikov
SWsoft Inc.
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