Date: Fri, 21 Sep 2001 11:12:44 +0200 From: Boris Staeblow <bs@dva.in-berlin.de> To: freebsd-isdn@freebsd.org Subject: 4.4R: loaded NETGRAPH and ifconfig iprX down -> page fault! Message-ID: <20010921111244.A1039@dva.in-berlin.de>
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Hello, There seems to be a serious bug in I4B: If NETGRAPH is loaded and you 'ifconfig iprX down' an interface the system will crash always with: Fatal Trap 12: page fault while in kernel mode fault virtual address = 0x31727079 fault code = supervisor read, page not present instruction pointer = 0x8:0xc017323d stack pointer = 0x10:0xd1a58df4 frame pointer = 0x10:0xd1a58e00 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 precessor eflags = interrupt enabled, resume, IOPL = 0 current process = 32457 (ifconfig) interrupt mask = net tty trap number = 12 panic: page fault syncing disks... done This is reproduceable. The crash will not occur when netgraph is not loaded / defined in kernel (but I need it for pppoed!). The system will crash too when the iprX-connection establishes (to old an current I4B-Versions and Suse-Linux). The system will always crash if you enter "ifconfig iprX ether x:x:x:x:x:x..." (it doesn't matter if netgraph is loaded or not in this case). These bugs where reproduced on a totally different 4.4R machine. These bugs didn't occur on 4.3R _or_ with the previous i4b-Release in -STABLE. My enviroment: - FreeBSD 4.4-RELEASE - I4B 01.00.1 Is this reproduceable on other machines? Are there any fixes? Boris To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isdn" in the body of the message
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