diff options
Diffstat (limited to 'drivers/scsi/scsi_tgt_lib.c')
| -rw-r--r-- | drivers/scsi/scsi_tgt_lib.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/drivers/scsi/scsi_tgt_lib.c b/drivers/scsi/scsi_tgt_lib.c index dc8781a68d7c..c05dff95bd95 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); |