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SCSI: Fix protection scsi_data_buffer leak

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commit b4c2554d40ceac130a8d062eaa8838ed22158c45 upstream.

We would leak a scsi_data_buffer if the free_list command was of the
protected variety.

Reported-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Martin K. Petersen
2009-09-18 17:33:01 -04:00
committed by Greg Kroah-Hartman
parent 39335b18d5
commit b509b9bd99
1 changed files with 7 additions and 4 deletions
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11
drivers/scsi/scsi.c
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@@ -241,10 +241,7 @@ scsi_host_alloc_command(struct Scsi_Host *shost, gfp_t gfp_mask)
*/
struct scsi_cmnd *__scsi_get_command(struct Scsi_Host *shost, gfp_t gfp_mask)
{
struct scsi_cmnd *cmd;
unsigned char *buf;
cmd = scsi_host_alloc_command(shost, gfp_mask);
struct scsi_cmnd *cmd = scsi_host_alloc_command(shost, gfp_mask);
if (unlikely(!cmd)) {
unsigned long flags;
@@ -258,9 +255,15 @@ struct scsi_cmnd *__scsi_get_command(struct Scsi_Host *shost, gfp_t gfp_mask)
spin_unlock_irqrestore(&shost->free_list_lock, flags);
if (cmd) {
void *buf, *prot;
buf = cmd->sense_buffer;
prot = cmd->prot_sdb;
memset(cmd, 0, sizeof(*cmd));
cmd->sense_buffer = buf;
cmd->prot_sdb = prot;
}
}