Date: 20 Dec 2001 11:15:45 -0000 From: Yusuf Goolamabbas <yusufg@outblaze.com> To: freebsd-net@freebsd.org, freebsd-stable@freebsd.org Cc: cez@pkl.net Subject: 4.4-stable kernel panic with dummynet/bridging. Same rules work fine with 4.3-RC Message-ID: <20011220111545.3327.qmail@yusufg.portal2.com>
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Hi, Similar to what Ceri describes in this message http://docs.freebsd.org/cgi/getmsg.cgi?fetch=508422+0+current/freebsd-stable I have observed a 4.4-stable box panicing whenever bridging is turned on. This was cvsup'ed today morning. I have other boxes cvsup'ed at the same time except that they don't have dummynet/bridging configured in them and they work pretty well I replaced the box with an another 4.3-RC box and the same rules enclosed here work just fine ${fwcmd} add 100 pass all from any to any via lo0 ${fwcmd} add 200 deny all from any to 127.0.0.0/8 ${fwcmd} add 300 deny ip from 127.0.0.0/8 to any # If you're using 'options BRIDGE', uncomment the following line to pass ARP ${fwcmd} add 400 pass udp from 0.0.0.0 2054 to 0.0.0.0 ${fwcmd} add 500 pass all from <ip_range> to any in via fxp0 ${fwcmd} add 800 pipe 1 ip from <ip_range> to any in via fxp1 ${fwcmd} pipe 1 config mask src-ip 0x000000ff bw 512Kbit/s queue 50 Basically, fxp1 is connected to a switch and every machine on that switch is rate limited to 512Kbit/s individually I had configured the box with DDB but didn't have serial console so I transcribed everything at the db> prompt Fatal trap 12: page fault while in kernel mode fault virtual address = 0xa4 fault code = superviser read, page not present instruction pointer = 0x8:0xc0199164 strack pointer = 0x10:0xc9889b5c frame pointer = 0x10:0xc9889bac code segment = base 0x0, limit 0xfff type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 55 (sh) interrupt mask = kernel: type 12 trap, code = 0 stopped at in_arpinput+0x158; movl 0xa4(%eax,%eax) db> t in_arpinput(c077cb00,0,c989cac,c020d625,c020d5df) at in_arpinput+0x158 arpintr(c020dfdf,0,c02800,0,c7640010,c0e700,0) at arpintr+0x112 swi_net_next(c028c26c,c764f000,3,0,c835c440) at swi_net_next trap_pfault(c9889d20,0,c764f000,0,806c591) at trap_pfault+0xbe trap(10,c9880010,c01d0010,c764f000,80be591_ at trap+0x31f calltrap() at calltrap+0x11 trap 0xc : eip - 0xc02172cf , esp - 0xc9889d60, ebp - 0xc9889d88 copyinstr(c9889e68,0,0,c9889f80,c9889f80) at copyinstr+0x37 exec_elf_imagact(c9889e68,c835c440,3,c9889f80,c9889e68) at exec_elf_imagact+0xba execve(c835c440,c9889f80,80be5d4,0,80be590) at execve+0x26c syscall2(2f,2f,2f,80be590,0) at syscall2+0x1a5 Xinit0x80_syscall() + Xint-x80_syscall+0x25 Hope this helps Regards, Yusuf -- Yusuf Goolamabbas yusufg@outblaze.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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