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| author | Hannes Reinecke <hare@suse.de> | 2016-03-18 14:55:38 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-03-18 15:49:44 -0400 |
| commit | ba08311647892cc7912de74525fd78416caf544a (patch) | |
| tree | 64525988101b8094c1d3419bd3ee5bf5e1cdc0e3 | |
| parent | c80fa12e6d4ab07b6aff9be1b3be7df265b9497b (diff) | |
| download | linux-stable-ba08311647892cc7912de74525fd78416caf544a.tar.gz linux-stable-ba08311647892cc7912de74525fd78416caf544a.tar.bz2 linux-stable-ba08311647892cc7912de74525fd78416caf544a.zip | |
scsi_common: do not clobber fixed sense information
For fixed sense the information field is 32 bits, to we need to truncate
the information field to avoid clobbering the sense code.
Fixes: a1524f226a02 ("libata-eh: Set 'information' field for autosense")
Cc: <stable@vger.kernel.org> #v4.1+
Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Lee Duncan <lduncan@suse.com>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| -rw-r--r-- | drivers/scsi/scsi_common.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/scsi/scsi_common.c b/drivers/scsi/scsi_common.c index c126966130ab..ce79de822e46 100644 --- a/drivers/scsi/scsi_common.c +++ b/drivers/scsi/scsi_common.c @@ -278,8 +278,16 @@ int scsi_set_sense_information(u8 *buf, int buf_len, u64 info) ucp[3] = 0; put_unaligned_be64(info, &ucp[4]); } else if ((buf[0] & 0x7f) == 0x70) { - buf[0] |= 0x80; - put_unaligned_be64(info, &buf[3]); + /* + * Only set the 'VALID' bit if we can represent the value + * correctly; otherwise just fill out the lower bytes and + * clear the 'VALID' flag. + */ + if (info <= 0xffffffffUL) + buf[0] |= 0x80; + else + buf[0] &= 0x7f; + put_unaligned_be32((u32)info, &buf[3]); } return 0; |