iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

scsi: sd: Fix sd_do_mode_sense() buffer length handling

Browse Source 
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@wdc.com
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Damien Le Moal 2021-08-20 16:02:55 +09:00 committed by Martin K. Petersen
parent a7d6840bed
commit c749301ebe
1 changed files with 7 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/scsi/sd.c
View File

@ -2604,6 +2604,13 @@ 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);