[Xen-bugs] [Bug 168] kernel BUG at arch/xen/i386/kernel/pci-dma.c:30 (iommu_bug)!

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=168





------- Additional Comments From dbarrera@xxxxxxxxxx  2005-08-19 16:08 -------
OK. This is the console log from a RHEL 4 machine, Xen built with PAE on, dom0
booted without swiotlb=force. When attempting to create domU, dom0 crashes:

Red Hat Enterprise Linux AS release 4 (Nahant)
Kernel 2.6.12-xen0 on an i686

lamb5 login: Fatal DMA error! Please use 'swiotlb=force'
kernel BUG at arch/xen/i386/kernel/pci-dma.c:53 (dma_map_sg)!
 [<c010eff1>] dma_map_sg+0x131/0x180
 [<c038eda5>] ahd_linux_run_device_queue+0x265/0x820
 [<c0283983>] as_remove_queued_request+0x83/0x170
 [<c0388245>] ahd_linux_queue+0x1b5/0x2d0
 [<c032b5b8>] scsi_dispatch_cmd+0x178/0x2c0
 [<c032b830>] scsi_done+0x0/0x30
 [<c032e7e0>] scsi_times_out+0x0/0xc0
 [<c022b427>] kobject_get+0x17/0x20
 [<c0332251>] scsi_request_fn+0x1f1/0x550
 [<c027cc5a>] generic_unplug_device+0x2a/0x70
 [<c027cc30>] generic_unplug_device+0x0/0x70
 [<c03099c6>] blkio_schedule+0x186/0x190
 [<c011e770>] default_wake_function+0x0/0x20
 [<c010aba2>] ret_from_fork+0x6/0x14
 [<c011e770>] default_wake_function+0x0/0x20
 [<c0309840>] blkio_schedule+0x0/0x190
 [<c0108b45>] kernel_thread_helper+0x5/0x10
Kernel panic - not syncing: BUG!
 (XEN) Domain 0 shutdown: rebooting machine.
(XEN) Reboot disabled on cmdline: require manual reset


-- 
Configure bugmail: 
http://bugzilla.xensource.com/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug, or are watching the assignee.

_______________________________________________
Xen-bugs mailing list
Xen-bugs@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-bugs