diff options
| author | Martin K. Petersen <martin.petersen@oracle.com> | 2010-01-20 10:20:43 +0300 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-02-19 20:15:33 +0300 |
| commit | 77c9cfc51b0d732b2524799810fb30018074fd60 (patch) | |
| tree | 3f017828710e8bab9e172204a2ef5f2e9544d379 | |
| parent | 8475f688d796b875bf98ed161acd53d00a1483ff (diff) | |
| download | linux-77c9cfc51b0d732b2524799810fb30018074fd60.tar.xz | |
[SCSI] Fix printing of failed 32-byte commands
Having the large CDB allocation logic in sd.c means that
scsi_io_completion does not have access to the command buffer. That in
turn causes garbage to be printed when a 32-byte command fails. Move the
command printing to sd_done where the command buffer is intact. Clear
the command buffer pointer after the extended CDB has been freed.
Make scsi_print_command ignore commands with NULL CDB pointers to
inhibit printing of garbled command strings.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
| -rw-r--r-- | drivers/scsi/constants.c | 3 | ||||
| -rw-r--r-- | drivers/scsi/sd.c | 13 |
2 files changed, 15 insertions, 1 deletions
diff --git a/drivers/scsi/constants.c b/drivers/scsi/constants.c index 7092ff67ecd3..cd05e049d5f6 100644 --- a/drivers/scsi/constants.c +++ b/drivers/scsi/constants.c @@ -346,6 +346,9 @@ void scsi_print_command(struct scsi_cmnd *cmd) { int k; + if (cmd->cmnd == NULL) + return; + scmd_printk(KERN_INFO, cmd, "CDB: "); print_opcode_name(cmd->cmnd, cmd->cmd_len); diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 908d400b601a..1dd4d8407694 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -1209,8 +1209,19 @@ static int sd_done(struct scsi_cmnd *SCpnt) sd_dif_complete(SCpnt, good_bytes); if (scsi_host_dif_capable(sdkp->device->host, sdkp->protection_type) - == SD_DIF_TYPE2_PROTECTION && SCpnt->cmnd != SCpnt->request->cmd) + == SD_DIF_TYPE2_PROTECTION && SCpnt->cmnd != SCpnt->request->cmd) { + + /* We have to print a failed command here as the + * extended CDB gets freed before scsi_io_completion() + * is called. + */ + if (result) + scsi_print_command(SCpnt); + mempool_free(SCpnt->cmnd, sd_cdb_pool); + SCpnt->cmnd = NULL; + SCpnt->cmd_len = 0; + } return good_bytes; } |