Hi, Jgarzik When enable FBS feature, ahci_port_intr function will kernel panic if have PORT_IRQ_ERROR error. I can't capture the log, but the code patch is very clear: ata_exec_internal [ the function might sleep ] sata_pmp_read sata_pmp_scr_read sata_scr_read ata_phys_link_online ata_link_online ahci_error_intr ahci_port_intr Now, i can't find the best method to fix the issue, so, please help fix the issue. Thanks! -- 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