diff options
| -rw-r--r-- | drivers/scsi/sd.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 7a1cf6c80f6a..4fbb8310e268 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -1128,6 +1128,10 @@ static blk_status_t sd_setup_rw6_cmnd(struct scsi_cmnd *cmd, bool write, sector_t lba, unsigned int nr_blocks, unsigned char flags) { + /* Avoid that 0 blocks gets translated into 256 blocks. */ + if (WARN_ON_ONCE(nr_blocks == 0)) + return BLK_STS_IOERR; + if (unlikely(flags & 0x8)) { /* * This happens only if this drive failed 10byte rw |