Hi, Jonathan Fri, 04 Jul 2014, Jonathan wrote: > Beginning with kernel 3.15.1, I am getting hard lockups every time I connect a > drive to my USB 3 HDD dock with ASMedia ASM1051E UASP compliant chipset. The > only way I am able work around this is to set the quirk to ignore uas for the > device. Here are the kernel messages during connection followed by a backtrace: > > [ 229.882190] usb 2-1: new SuperSpeed USB device number 3 using xhci_hcd > [ 229.908001] usb-storage 2-1:1.0: USB Mass Storage device detected > [ 229.908218] usb-storage 2-1:1.0: Quirks match for vid 174c pid 55aa: 400000 > [ 229.908349] scsi7 : usb-storage 2-1:1.0 > [ 230.912633] scsi 7:0:0:0: Direct-Access ASMT 2105 0 PQ: 0 ANSI: 6 > [ 230.914818] sd 7:0:0:0: [sdc] Attached SCSI removable disk > [ 289.680267] usb 2-1: USB disconnect, device number 3 > [ 319.599862] usb 2-1: new SuperSpeed USB device number 4 using xhci_hcd > [ 319.626881] scsi8 : uas > [ 319.628221] xhci_hcd 0000:02:00.0: ERROR Transfer event TRB DMA ptr not part of current TD > [ 320.029323] BUG: unable to handle kernel paging request at 0000000001000003 This looks like something is going wrong in the XHCI code, likely something related to bulk-streams. I've a dock with an ASMedia ASM1053E chipset myself and that one works fine with both Nec and Intel XHCI controllers. What type of XHCI controller do you have ? Can you please do "lspci" on the machine in question and include the output in your next mail ? Regards, Hans -- 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
