Date: Thu, 17 Dec 2009 17:29:03 +0200 From: David Naylor <naylor.b.david@gmail.com> To: freebsd-emulation@freebsd.org Subject: VirtualBox: killing DMA Message-ID: <200912171729.07605.naylor.b.david@gmail.com>
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[-- Attachment #1 --] Hi, I am having problems where network I/O on a FreeBSD guest within VirtualBox ends up killing the host. Here is my setup: Host: FreeBSD 8 RC2 /amd64 Guest: FreeBSD-current (~week old) /i386 VirtualBox: virtualbox-3.0.51.r22902_2 (bridged to my dc0) I've tried multiple configurations all resulting in the same problem. The most conservative configuration: Machine: VT disabled Host: hw.ata.ata_dma=0, hw.ata.atapi_dma=0 (safe mode didn't work) Guest: safe mode VirtualBox: VT and APIC disabled I can cause the problem by doing (in the guest): # mount -t smbfs //server/tmp /mnt # dd if=/mnt/big_file of=/tmp bs=1k The error messages on the host are: ad8: FAILED - load data ad8: setting up DMA failed g_vfs_done(): ad8s1d[WRITE(offset=65536, length=2048)]error = 5 ... (many g_vfs_done messages, with different partition, offset and length) ... panic: initiate_write_inodeblock_ufs2: already started If I disable the network interface (from VirtualBox for the guest) then I cannot produce the above. Regards, David [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.13 (FreeBSD) iEYEABECAAYFAksqTkMACgkQUaaFgP9pFrLqiACggZ5EtVd/4y0mPgcm+n2CMLZ+ cNAAoI0W8IZMWPx8C3yBcW+4kS7CzseZ =beM7 -----END PGP SIGNATURE-----
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