Date: Sun, 7 Apr 2002 09:00:39 -0700 (PDT) From: Joe Ondrechen <ondrechenj@whiteice.com> To: freebsd-gnats-submit@FreeBSD.org Subject: i386/36850: Page Fault using ppp with USB Modem Message-ID: <200204071600.g37G0d819894@freefall.freebsd.org>
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>Number: 36850 >Category: i386 >Synopsis: Page Fault using ppp with USB Modem >Confidential: no >Severity: critical >Priority: high >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sun Apr 07 09:10:01 PDT 2002 >Closed-Date: >Last-Modified: >Originator: Joe Ondrechen >Release: 4.5R >Organization: N/A >Environment: FreeBSD 4.5-RELEASE #22: /usr/src/sys/compile/KAYAKXW i386 >Description: Kernel panic page fault occurs when using ppp with USB modem: Fatal trap 12: page fault while in kernel mode fault virtual address = 0x0 fault code = supervisor read, page not present instruction pointer = 0x8:0xc030de4f stack pointer = 0x10:0xcde34bd4 frame pointer = 0x10:0xcde34c04 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 = 131 (ppp) interrupt mask = tty trap number = 12 panic: page fault --- (kgdb) backtrace #0 0xc01bc4f2 in dumpsys () #1 0xc01bc307 in boot () #2 0xc01bc6e8 in poweroff_wait () #3 0xc030f1fa in trap_fatal () #4 0xc030eecd in trap_pfault () #5 0xc030eab7 in trap () #6 0xc030de4f in generic_bcopy () #7 0xc01d2f03 in ttread () #8 0xc047deb6 in ?? () #9 0xc01f4743 in spec_read () #10 0xc028dfec in ufsspec_read () #11 0xc028e651 in ufs_vnoperatespec () #12 0xc01f0898 in vn_read () #13 0xc01cab6c in dofileread () #14 0xc01caa32 in read () #15 0xc030f4a9 in syscall2 () #16 0xc0303b15 in Xint0x80_syscall () >How-To-Repeat: Surf web using USB modem, ppp user mode. >Fix: >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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