This is a note to let you know that I've just added the patch titled scsi: sd: Fix sd_do_mode_sense() buffer length handling to the 5.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: scsi-sd-fix-sd_do_mode_sense-buffer-length-handling.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From c749301ebee82eb5e97dec14b6ab31a4aabe37a6 Mon Sep 17 00:00:00 2001 From: Damien Le Moal <damien.lemoal@xxxxxxx> Date: Fri, 20 Aug 2021 16:02:55 +0900 Subject: scsi: sd: Fix sd_do_mode_sense() buffer length handling From: Damien Le Moal <damien.lemoal@xxxxxxx> commit c749301ebee82eb5e97dec14b6ab31a4aabe37a6 upstream. For devices that explicitly asked for MODE SENSE(10) use, make sure that scsi_mode_sense() is called with a buffer of at least 8 bytes so that the sense header fits. Link: https://lore.kernel.org/r/20210820070255.682775-4-damien.lemoal@xxxxxxx Signed-off-by: Damien Le Moal <damien.lemoal@xxxxxxx> Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/scsi/sd.c | 7 +++++++ 1 file changed, 7 insertions(+) --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -2607,6 +2607,13 @@ sd_do_mode_sense(struct scsi_disk *sdkp, unsigned char *buffer, int len, struct scsi_mode_data *data, struct scsi_sense_hdr *sshdr) { + /* + * If we must use MODE SENSE(10), make sure that the buffer length + * is at least 8 bytes so that the mode sense header fits. + */ + if (sdkp->device->use_10_for_ms && len < 8) + len = 8; + return scsi_mode_sense(sdkp->device, dbd, modepage, buffer, len, SD_TIMEOUT, sdkp->max_retries, data, sshdr); Patches currently in stable-queue which might be from damien.lemoal@xxxxxxx are queue-5.15/scsi-sd-fix-sd_do_mode_sense-buffer-length-handling.patch