Julian Margetson <runaway@xxxxxxxx> writes: > On 12/18/2015 8:45 AM, Måns Rullgård wrote: >> Julian Margetson <runaway@xxxxxxxx> writes: >> >>>>> Builds now. Using my own .config. >>>> What changed? >>> I may have messed up the patch initially . >> Probably. Let's pretend it never happened. >> >>>>> [ 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:? There's obviously a mismatch somewhere since we know that sata_dwc_qc_issue isn't in copy_32.S. Please post the full crash report you got this address from. -- Måns Rullgård -- 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