From: Paolo Bonzini <pbonzini@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: target-devel@vger.kernel.org, nab@linux-iscsi.org, hch@lst.de,
roland@kernel.org
Subject: [PATCH 11/11] target: go through normal processing for all zero-length commands
Date: Fri, 7 Sep 2012 17:30:42 +0200 [thread overview]
Message-ID: <1347031842-2531-12-git-send-email-pbonzini@redhat.com> (raw)
In-Reply-To: <1347031842-2531-1-git-send-email-pbonzini@redhat.com>
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>
---
drivers/target/target_core_transport.c | 18 ------------------
1 files changed, 0 insertions(+), 18 deletions(-)
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 09d9279..c071d0b 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -2295,24 +2295,6 @@ 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 ||
- cmd->t_task_cdb[0] == REPORT_LUNS) {
- 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);
--
1.7.1
next prev parent reply other threads:[~2012-09-07 15:31 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-07 15:30 [PATCH 00/11] lots of fixes for zero allocation length Paolo Bonzini
2012-09-07 15:30 ` [PATCH 01/11] target: go through normal processing for zero-length PSCSI commands Paolo Bonzini
2012-09-07 18:06 ` Nicholas A. Bellinger
2012-09-07 15:30 ` [PATCH 02/11] target: report too-small parameter lists everywhere Paolo Bonzini
2012-09-07 18:09 ` Nicholas A. Bellinger
2012-09-07 15:30 ` [PATCH 03/11] target: fail REPORT LUNS with less than 16 bytes of payload Paolo Bonzini
2012-09-07 18:09 ` Nicholas A. Bellinger
2012-09-07 15:30 ` [PATCH 04/11] target: support zero-size allocation lengths in transport_kmap_data_sg Paolo Bonzini
2012-09-07 18:12 ` Nicholas A. Bellinger
2012-09-07 15:30 ` [PATCH 05/11] target: support zero allocation length in REQUEST SENSE Paolo Bonzini
2012-09-07 18:17 ` Nicholas A. Bellinger
2012-09-07 15:30 ` [PATCH 06/11] target: go through normal processing for zero-length REQUEST_SENSE Paolo Bonzini
2012-09-07 18:23 ` Nicholas A. Bellinger
2012-09-07 18:33 ` Nicholas A. Bellinger
2012-09-07 20:34 ` Paolo Bonzini
2012-09-07 15:30 ` [PATCH 07/11] target: support zero allocation length in INQUIRY Paolo Bonzini
2012-09-07 15:30 ` [PATCH 08/11] target: fix truncation of mode data, support zero allocation length Paolo Bonzini
2012-09-07 15:30 ` [PATCH 09/11] target: support zero allocation length in SBC commands Paolo Bonzini
2012-09-07 15:30 ` [PATCH 10/11] target: do not submit a zero-bio I/O request Paolo Bonzini
2012-09-07 15:30 ` Paolo Bonzini [this message]
2012-09-07 19:01 ` [PATCH 00/11] lots of fixes for zero allocation length Nicholas A. Bellinger
2012-09-10 7:28 ` Christoph Hellwig
2012-09-10 7:48 ` Paolo Bonzini
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