On Fri, 2015-12-18 at 09:52 -0400, Julian Margetson wrote: > On 12/18/2015 8:45 AM, Måns Rullgård wrote: > > Julian Margetson <runaway@xxxxxxxx> writes: > > > > > [ 4.784199] sata-dwc 4bffd1000.sata: id 0, controller > > > > > version 1.82 > > > > > [ 4.791186] scsi host0: sata-dwc > > > > > [ 4.794830] ata1: SATA max UDMA/133 irq 36 > > > > > [ 4.799463] sata_sil 0001:00:04.0: Applying R_ERR on DMA > > > > > activate FIS errata fix > > > > > [ 4.807959] scsi host1: sata_sil > > > > > [ 4.811662] scsi host2: sata_sil > > > > > [ 4.815242] ata2: SATA max UDMA/100 mmio m512@0xd84280000 > > > > > tf 0xd84280080 irq 21 > > > > > [ 4.822990] ata3: SATA max UDMA/100 mmio m512@0xd84280000 > > > > > tf 0xd842800c0 irq 21 > > > > > > > > > > [ 5.143502] ata1: SATA link up 3.0 Gbps (SStatus 123 > > > > > SControl 300) > > > > > [ 5.164367] ata2: SATA link up 1.5 Gbps (SStatus 113 > > > > > SControl 310) > > > > > [ 5.185174] ppc-of-ohci 4bffd0000.usb: irq 32, io mem > > > > > 0x4bffd0000 > > > > > [ 5.206125] Unable to handle kernel paging request for > > > > > data at address 0x00000000 > > > > > [ 5.228546] Faulting instruction address: 0xc043a2c8 > > > > > [ 5.248577] Vector: 300 (Data Access) at [eddafae0] > > > > > [ 5.268658] pc: c043a2c8: sata_dwc_qc_issue+0xb8/0x204 > > > > Well, that's not good. Can you translate that address to a > > > > line of code? > > > > > > > need some guidance on method . > > Enable CONFIG_DEBUG_INFO, then use this command: > > > > $ addr2line -e vmlinux 0xc043a2c8 > > > > Obviously substitute the actual crashing address if it changes. > > > addr2line -e vmlinux 0xc044b41c > arch/powerpc/lib/copy_32.S:? memcpy I suppose. Might be copy to unmapped memory. Anyway, can you enable debug options as I suggested including debug for sata driver ('dw_dmac_core.dyndbg dw_dmac.dyndbg sata_dwc_460ex.dydbg' to the cmdline and CONFIG_DYNAMIC_DEBUG=y)? -- Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> Intel Finland Oy -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html