Date: Mon, 2 Mar 2009 10:53:52 +0300 From: "Yuriy Tsibizov" <Yuriy.Tsibizov@gfk.com> To: <ed@freebsd.org> Cc: freebsd-current@freebsd.org Subject: mutex Giant recursed at /usr/src/sys/kern/tty.c:1222 (via linux_ioctl_termio) Message-ID: <BA0C4C2EEBEBFD448415F22CE73EEC0C13CA10@ex-be-1.hhp.local>
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Ed,=20 I've got a nice panic running user-mode linux uder (linux) gdb under slightly modified FreeBSD kernel. As I understand, these changes should not have any effect on tty code paths, but I want to warn you that this is not 'clean' FreeBSD. All local changes (cvs -R diff -u /usr/src) are available at http://chibis.persons.gfk.ru/freebsd/panic2/local-changes.gz.=20 I did no attempts to reproduce this, but may try to do it (I also want to get good crashdump, not textdump I have now). What I had running: 1) /usr/sbin/ppp was running, but at the time of panic it was disconneted. I use it for dial-up connection. 2) linux (gentoo) with /proc (linprocfs) mounted free# chroot /fwdisk/gentoo/gentoo-stage3 bin/sh sh-3.2# uname -a Linux free.home.local 2.6.16 FreeBSD 8.0-CURRENT #0: Sun Feb 22 14:04:27 MSK 200 9 i686 AMD Athlon(tm) XP 1500+ AuthenticAMD GNU/Linux sh-3.2# cat /etc/gentoo-release Gentoo Base System version 1.6.14 sh-3.2# 3)user-mode linux (http://chibis.persons.gfk.ru/linux/) was started under linux gdb (and crashed). did some backtrace analysis, and had console output scrolled back. I have only textdumps for now (http://chibis.persons.gfk.ru/freebsd/panic2/textdump.tar.gz), if you need full crashdump I can try to reproduce it later. Yuriy.
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