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path: root/drivers/scsi/scsi_tgt_lib.c
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Diffstat (limited to 'drivers/scsi/scsi_tgt_lib.c')
-rw-r--r--drivers/scsi/scsi_tgt_lib.c23
1 files changed, 20 insertions, 3 deletions
diff --git a/drivers/scsi/scsi_tgt_lib.c b/drivers/scsi/scsi_tgt_lib.c
index dc8781a68d7..c05dff95bd9 100644
--- a/drivers/scsi/scsi_tgt_lib.c
+++ b/drivers/scsi/scsi_tgt_lib.c
@@ -459,6 +459,16 @@ static struct request *tgt_cmd_hash_lookup(struct request_queue *q, u64 tag)
return rq;
}
+static void scsi_tgt_build_sense(unsigned char *sense_buffer, unsigned char key,
+ unsigned char asc, unsigned char asq)
+{
+ sense_buffer[0] = 0x70;
+ sense_buffer[2] = key;
+ sense_buffer[7] = 0xa;
+ sense_buffer[12] = asc;
+ sense_buffer[13] = asq;
+}
+
int scsi_tgt_kspace_exec(int host_no, int result, u64 tag,
unsigned long uaddr, u32 len, unsigned long sense_uaddr,
u32 sense_len, u8 rw)
@@ -514,9 +524,16 @@ int scsi_tgt_kspace_exec(int host_no, int result, u64 tag,
if (len) {
err = scsi_map_user_pages(rq->end_io_data, cmd, uaddr, len, rw);
if (err) {
- eprintk("%p %d\n", cmd, err);
- err = -EAGAIN;
- goto done;
+ /*
+ * user-space daemon bugs or OOM
+ * TODO: we can do better for OOM.
+ */
+ eprintk("cmd %p ret %d uaddr %lx len %d rw %d\n",
+ cmd, err, uaddr, len, rw);
+ cmd->result = SAM_STAT_CHECK_CONDITION;
+ memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
+ scsi_tgt_build_sense(cmd->sense_buffer,
+ HARDWARE_ERROR, 0, 0);
}
}
err = scsi_tgt_transfer_response(cmd);