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: Vasiliy Kovalev <kovalev@xxxxxxxxxxxx> --- drivers/scsi/sd.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index f2dfd9853d3432..2f2ca287887603 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -2649,6 +2649,13 @@ sd_do_mode_sense(struct scsi_disk *sdkp, int dbd, int modepage, 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); -- 2.33.8
