Date: Tue, 2 Sep 2008 15:56:33 -0500 (CDT) From: "Sean C. Farley" <scf@FreeBSD.org> To: Chagin Dmitry <dchagin@FreeBSD.org> Cc: freebsd-emulation@FreeBSD.org Subject: Re: Linux applications core if running (k)qemu Message-ID: <alpine.BSF.2.00.0809021552040.7934@thor.farley.org> In-Reply-To: <20080830113448.GA2152@dchagin.dialup.corbina.ru> References: <alpine.BSF.1.10.0808291711580.5866@thor.farley.org> <20080830113448.GA2152@dchagin.dialup.corbina.ru>
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On Sat, 30 Aug 2008, Chagin Dmitry wrote: > On Fri, Aug 29, 2008 at 05:29:09PM -0500, Sean C. Farley wrote: >> I am having trouble with kqemu.ko and linux.ko. If I run qemu with >> the following command, Linux applications (chroot, acroread, ls) will >> start core dumping: >> qemu-system-x86_64 -m 512 \ >> -drive file=/usr/QEMU/WinXP/c.img,if=ide,media=disk -boot c \ >> -std-vga -parallel none -serial none -monitor stdio \ >> -net nic,model=e1000 -net tap,ifname=tap0,script=no -localtime >> >> Loading kqemu.ko does not cause the problem, but the cores start a >> little after WinXP starts running. Unloading kqemu.ko does not help; >> the cores still happen but more randomly. I even tried unloading all >> linux modules and reloading them without luck. It takes a reboot. >> >> Packages: >> qemu-devel-0.9.1s.20080620_1 >> kqemu-kmod-devel-1.4.0.p1 >> linux_base-f8-8_4 >> >> sysctl: >> compat.linux.osrelease: 2.6.16 >> >> dmesg: >> kqemu version 0x00010400 >> kqemu: KQEMU installed, max_locked_mem=1792492kB. >> >> System is 7-STABLE as of r181963 with or without the patch to fix RT >> signals from Chagin. > > Interestingly... Sean, can you provide ktrace/kdump log of coring > apps? thnx! Here they are (good and bad): http://www.farley.org/freebsd/tmp/linuxulator_vs_kqemu/ The good trace is after the bad trace. I just kept running ktrace /compat/linux/bin/date over and over until I got a good trace. Before loading kqemu and running qemu, there were no core dumps. Also, I compared two bad traces and they were basically the same except for PID and a couple of addresses (still very close in value). Sean -- scf@FreeBSD.org
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