diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2012-09-18 01:36:11 +0200 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2012-09-18 02:13:39 +0200 |
| commit | d81cb44726f050d7cf1be4afd9cb45d153b52066 (patch) | |
| tree | 8c977e5217f7c40a5a6c9938a4acb73737c129a5 /drivers/target | |
| parent | target: do not submit a zero-bio I/O request (diff) | |
| download | linux-d81cb44726f050d7cf1be4afd9cb45d153b52066.tar.xz linux-d81cb44726f050d7cf1be4afd9cb45d153b52066.zip | |
target: go through normal processing for all zero-length commands
Yay, all users of transport_kmap_data_sg now check for a zero-length
request and/or a too-small parameter list length. We can thus go through
the normal emulation path even for such commands.
This means that out-of-bounds reads and writes are now reported correctly
even if they transfer 0 blocks. Other errors are also reported correctly.
Testcase: sg_raw /dev/sdb 28 00 80 00 00 00 00 00 00 00
should fail with ILLEGAL REQUEST / LBA OUT OF RANGE sense
does not fail without the patch
(still wrong with the patch, but better: the ASC is INVALID FIELD IN CDB)
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target')
| -rw-r--r-- | drivers/target/target_core_transport.c | 17 |
1 files changed, 0 insertions, 17 deletions
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 3cc76ad14ce2..221f67f3427c 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -2289,23 +2289,6 @@ int transport_generic_new_cmd(struct se_cmd *cmd) if (ret < 0) goto out_fail; } - /* - * If this command doesn't have any payload and we don't have to call - * into the fabric for data transfers, go ahead and complete it right - * away. - */ - if (!cmd->data_length && - cmd->t_task_cdb[0] != REQUEST_SENSE && - cmd->se_dev->transport->transport_type != TRANSPORT_PLUGIN_PHBA_PDEV) { - spin_lock_irq(&cmd->t_state_lock); - cmd->t_state = TRANSPORT_COMPLETE; - cmd->transport_state |= CMD_T_ACTIVE; - spin_unlock_irq(&cmd->t_state_lock); - - INIT_WORK(&cmd->work, target_complete_ok_work); - queue_work(target_completion_wq, &cmd->work); - return 0; - } atomic_inc(&cmd->t_fe_count); |