On Wednesday, November 08, 2017 05:28:16 PM Bartlomiej Zolnierkiewicz wrote: > Something is very wrong here as pci_request_selected_regions() in > drivers/ide/setup-pci.c:ide_pci_enable() should allocate PCI resources > so the second probe attempt should not happen. Also interface/device > names reuse should be prevented by ide_find_port_slot().. OK, I see now what is going on here: ... CONFIG_DEBUG_TEST_DRIVER_REMOVE=y ... config DEBUG_TEST_DRIVER_REMOVE bool "Test driver remove calls during probe (UNSTABLE)" depends on DEBUG_KERNEL help Say Y here if you want the Driver core to test driver remove functions by calling probe, remove, probe. This tests the remove path without having to unbind the driver or unload the driver module. This option is expected to find errors and may render your system unusable. You should say N here unless you are explicitly looking to test this functionality. We actually see race on ->remove inside IDE's ide-cd.c driver related to disk_check_events() handling.. It is not worth to continue with fixing IDE but from the quick look SCSI sr.c may have similar problem - it may be worth to try to reproduce it using libata's piix driver (disable CONFIG_IDE and enable CONFIG_BLK_DEV_SR, CONFIG_ATA_PIIX is already enabled). Best regards, -- Bartlomiej Zolnierkiewicz Samsung R&D Institute Poland Samsung Electronics -- 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
