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authorNicholas Bellinger <nab@linux-iscsi.org>2015-07-22 23:14:19 -0700
committerNicholas Bellinger <nab@linux-iscsi.org>2015-07-24 14:19:43 -0700
commite54198657b65625085834847ab6271087323ffea (patch)
treecd51f1a28f009c7f4ed97152a6a9ee245bd64d5d /include/target/iscsi
parent417c20a9bdd1e876384127cf096d8ae8b559066c (diff)
downloadlinux-stericsson-e54198657b65625085834847ab6271087323ffea.tar.gz
iscsi-target: Fix iscsit_start_kthreads failure OOPs
This patch fixes a regression introduced with the following commit in v4.0-rc1 code, where a iscsit_start_kthreads() failure triggers a NULL pointer dereference OOPs: commit 88dcd2dab5c23b1c9cfc396246d8f476c872f0ca Author: Nicholas Bellinger <nab@linux-iscsi.org> Date: Thu Feb 26 22:19:15 2015 -0800 iscsi-target: Convert iscsi_thread_set usage to kthread.h To address this bug, move iscsit_start_kthreads() immediately preceeding the transmit of last login response, before signaling a successful transition into full-feature-phase within existing iscsi_target_do_tx_login_io() logic. This ensures that no target-side resource allocation failures can occur after the final login response has been successfully sent. Also, it adds a iscsi_conn->rx_login_comp to allow the RX thread to sleep to prevent other socket related failures until the final iscsi_post_login_handler() call is able to complete. Cc: Sagi Grimberg <sagig@mellanox.com> Cc: <stable@vger.kernel.org> # v3.10+ Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'include/target/iscsi')
-rw-r--r--include/target/iscsi/iscsi_target_core.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/target/iscsi/iscsi_target_core.h b/include/target/iscsi/iscsi_target_core.h
index 34117b8b72e4..0aedbb2c10e0 100644
--- a/include/target/iscsi/iscsi_target_core.h
+++ b/include/target/iscsi/iscsi_target_core.h
@@ -595,6 +595,7 @@ struct iscsi_conn {
int bitmap_id;
int rx_thread_active;
struct task_struct *rx_thread;
+ struct completion rx_login_comp;
int tx_thread_active;
struct task_struct *tx_thread;
/* list_head for session connection list */