Date: Mon, 17 Mar 2008 09:14:17 +0100 (CET) From: Oliver Fromme <olli@lurza.secnetix.de> To: freebsd-emulation@FreeBSD.ORG Subject: qemu coredumps on RELENG_7 Message-ID: <200803170814.m2H8EHdh027983@lurza.secnetix.de>
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Hi, I'm trying to use the 7.0-RELEASE (i386) ISO in qemu on a RELENG_7 host (i386, too) from March 5th. It always coredumps with "invalid system call" shortly before starting sysinstall, unless I boot with "safe mode" from the loader menu _or_ without a vortual harddisk attached to qemu. These are the last kernel messages: Timecounter "TSC" frequency 1597573877 Hz quality 800 Timecounters tick every 1.000 msec hptrr: no controller detected. md0: Preloaded image </boot/mfsroot> 4423680 bytes at 0xc0d06518 acd0: CDROM <QEMU CD-ROM/0.91> at ata1-master PIO3 ad3: 2048MB <QEMU HARDDISK 0.9.1> at ata1-slave WDMA2 GEOM_LABEL: Label for provider acd0 is iso9660/FreeBSD_bootonly. Sometimes the last line is the "Timecounter" one, and sometimes it crashes even in the middle of printing a line, e.g. "md0: Preloade" is the last thing printed. I run qemu like this: qemu -m 256 -hdd hda.img -cdrom 7.0-RELEASE-i386-bootonly.iso -boot d where hda.img is a 2 GB empty file created with dd(1) from /dev/zero. I do _not_ use the kqemu module. I've compiled qemu without CDROM DMA support (i.e. with WITHOUT_CDROM_DMA) which supposedly causes problems sometimes. Interestingly, the crash does _not_ happen when I omit the -hd* option. Then sysinstall will come up fine. These are the next messages in that case: acd0: CDROM <QEMU CD-ROM/0.91> at ata1-master PIO3 GEOM_LABEL: Label for provider acd0 is iso9660/FreeBSD_bootonly. Trying to mount root from ufs:/dev/md0 /stand/sysinstall running as init on vty0 acpi0_check: nexus attached But of course I cannot install because there is no virtual harddisk. It doesn't matter whether I use -hda or -hdd ... As soon as there is a disk, qemu crashes as described above. Also it doesn't matter whether ACPI in qemu is enabled or disabled. However, when I select "safe mode" from the loader menu, then the crash does not happen. My questions: 1. Is that a known problem? 2. Can anybody else reproduce that problem? 3. Is there a quick workaround, other than "safe mode"? Thank you very much! Best regards Oliver -- Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing b. M. Handelsregister: Registergericht Muenchen, HRA 74606, Geschäftsfuehrung: secnetix Verwaltungsgesellsch. mbH, Handelsregister: Registergericht Mün- chen, HRB 125758, Geschäftsführer: Maik Bachmann, Olaf Erb, Ralf Gebhart FreeBSD-Dienstleistungen, -Produkte und mehr: http://www.secnetix.de/bsd "One of the main causes of the fall of the Roman Empire was that, lacking zero, they had no way to indicate successful termination of their C programs." -- Robert Firth
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