https://bugzilla.kernel.org/show_bug.cgi?id=151661 Bug ID: 151661 Summary: Adaptec 3805 prints "AAC: Host adapter dead -1" every 10 seconds but works fine anyway Product: SCSI Drivers Version: 2.5 Kernel Version: 4.6.5, 4.7.0 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: AACRAID Assignee: scsi_drivers-aacraid@xxxxxxxxxxxxxxxxxxxx Reporter: bugzie@xxxxxxxxxxx Regression: No Created attachment 227821 --> https://bugzilla.kernel.org/attachment.cgi?id=227821&action=edit dmesg (before igfx_off) (I've already posted this on vfio-users and linux-scsi mailing list, so I'm just copying decription with some minor changes) Hi, I have some issues with Adaptec 3805 and found that it could be related to iommu as described here [1]. I've tried various (iommu=pt etc.) but nothing seems to change the behaviour of the controller. Also tried the patch [2] from Alex Williamson on top of 4.6.5. Controller seems to work fine (random r/w) for some hours under Windows 7 (that's on different machine, AMD Phenom) or (on the same machine - that is: Intel i5-2400 with Intel DQ67SW motherboard) with Clonezilla. I did some further digging and added intel_iommu=igfx_off (found at some thread with some other hardware mentioning Sandy Bridge) and it seems to work - just transfered 300 gigabytes^W^Wover 1 TB of data to a testing array. On the other hand it still fills logs with those over and over every 10 seconds: AAC: Host adapter dead -1 I've also tried various Live Linux 64-bit distros: 1/2. Arch Bang (4.6.4-1-ARCH) and Ubuntu 16.04.1 (4.4.0-31-generic #50-Ubuntu) - prints errors every 10 seconds (afair didnt test if it works as I expected it doesnt) 3. Ubuntu 14.04 (4.4.0-15-generic #31-Ubuntu) - doesnt print errors, works --below info from before intel_iommu=igfx_off-- I could read the array (dd if=controller of=/dev/null), but not write. With dd write, trying to make fs or partition or whatever it ended with messages similar to this: DMAR: DRHD: handling fault status reg 3 DMAR: DMAR:[DMA Write] Request device [03:01.0] fault addr ffbb5000 DMAR:[fault reason 02] Present bit in context entry is clear grub: kernel /boot/vmlinuz root=*cut* enable_mtrr_cleanup intel_iommu=on rw vfio-pci.ids=1002:9460,1002:aa30,8086:1c26 vfio_iommu_type1.allow_unsafe_interrupts=1 (vfio-pci.ids are GPU, GPU audio and USB for passthru to Windows VM) dmesg attached ~ # lspci -nnvs 03:0e.0 03:0e.0 RAID bus controller [0104]: Adaptec AAC-RAID [9005:0285] Subsystem: Adaptec 3805 [9005:02bc] Flags: bus master, stepping, 66MHz, medium devsel, latency 32, IRQ 18 Memory at fb800000 (64-bit, non-prefetchable) [size=2M] Expansion ROM at fba00000 [disabled] [size=256K] Capabilities: [c0] Power Management version 2 Capabilities: [d0] MSI: Enable- Count=1/2 Maskable- 64bit+ Capabilities: [e0] PCI-X non-bridge device Kernel driver in use: aacraid [1] https://www.redhat.com/archives/vfio-users/2016-July/msg00046.html [2] https://www.redhat.com/archives/vfio-users/2016-July/msg00063.html -- You are receiving this mail because: You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
