Date: Thu, 20 Sep 2007 15:52:45 -0700 From: "Christopher Chen" <muffaleta@gmail.com> To: "Max Laier" <max@love2party.net> Cc: freebsd-net@freebsd.org Subject: Re: Creation of carp interface on amd64 spins Message-ID: <7bc80d500709201552r563a2708o9f2e63474bd55bcd@mail.gmail.com> In-Reply-To: <200709210033.05263.max@love2party.net> References: <7bc80d500709201457p5be576e3hdbe0fc536493497a@mail.gmail.com> <200709210033.05263.max@love2party.net>
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On 9/20/07, Max Laier <max@love2party.net> wrote: > On Thursday 20 September 2007, Christopher Chen wrote: > > Hi: > > > > I'm running 6.2-RELEASE on some Pentium D's running and amd64 port. > > > > I'm doing some mildly interesting things with vlan tagging, etc, and I > > want to also set up carp. On identical machines running the i386 port, > > this works correctly, but when running > > > > ifconfig carp0 > > > > For instance, the process just spins and can't be killed. The rest of > > the machine is fine, though! > > > > This is 6.2-RELEASE/amd64 running in SMP mode. > > > > Any ideas? > > Can you tell me what "^T" or ps gives for the spinning process? Does it > hang in userland or kernel? Can you try to trace the ifconfig, or - if > the hang is in the kernel - break into the kernel debugger and get a back > trace for the process? Max: load: 1.62 cmd: ifconfig 920 [runnable] 0.00u 96.02s 98% 920k That's what ^T says. I'm going to reboot and ktrace it now. So here's the last few lines of the ktrace: 944 ifconfig CALL modstat(0x10a,0x7fffffffe280) 944 ifconfig RET modstat 0 944 ifconfig CALL modfnext(0x10a) 944 ifconfig RET modfnext 267/0x10b 944 ifconfig CALL modstat(0x10b,0x7fffffffe280) 944 ifconfig RET modstat 0 944 ifconfig CALL socket(0x2,0x2,0) 944 ifconfig RET socket 3 944 ifconfig CALL ioctl(0x3,SIOCIFCREATE,0x514ce0) l# lsof -p 944 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME ifconfig 944 root cwd VDIR 0,77 512 16525 /root ifconfig 944 root rtd VDIR 0,77 512 2 / ifconfig 944 root txt VREG 0,77 80296 48 /sbin/ifconfig ifconfig 944 root txt VREG 0,77 192688 116 /libexec/ld-elf.so.1 ifconfig 944 root txt VREG 0,77 7424 24794 /lib/libipx.so.3 ifconfig 944 root txt VREG 0,77 1083208 24786 /lib/libc.so.6 ifconfig 944 root 0u VCHR 0,93 0t2101 93 /dev/ttyp0 ifconfig 944 root 1u VCHR 0,93 0t2101 93 /dev/ttyp0 ifconfig 944 root 2u VCHR 0,93 0t2101 93 /dev/ttyp0 ifconfig 944 root 3u IPv4 0xffffff002d459130 0t0 UDP *:* Sorry I don't have physical access so I can't break into the kernel debugger right now. cc Your #1 Fan -- Chris Chen <muffaleta@gmail.com> "I want the kind of six pack you can't drink." -- Micah
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