During revalidating, if sd card is removed, scsi_device will be NULL, so we should not revalidate or it will cause a panic. This problem is report at: http://comments.gmane.org/gmane.linux.kernel/1250235 Signed-off-by: Yang Bai <hamo.by@xxxxxxxxx> --- drivers/scsi/sd.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index c691fb5..470339c 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -2370,10 +2370,10 @@ static int sd_revalidate_disk(struct gendisk *disk) "sd_revalidate_disk\n")); /* - * If the device is offline, don't try and read capacity or any + * If the device is removed or offline, don't try and read capacity or any * of the other niceties. */ - if (!scsi_device_online(sdp)) + if (!sdp || !scsi_device_online(sdp)) goto out; buffer = kmalloc(SD_BUF_SIZE, GFP_KERNEL); -- 1.7.9 -- 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
