This is a note to let you know that I've just added the patch titled target: Fix target_release_cmd_kref shutdown comp leak to the 4.5-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: target-fix-target_release_cmd_kref-shutdown-comp-leak.patch and it can be found in the queue-4.5 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 5e47f1985d7107331c3f64fb3ec83d66fd73577e Mon Sep 17 00:00:00 2001 From: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx> Date: Mon, 14 Mar 2016 22:47:37 -0700 Subject: target: Fix target_release_cmd_kref shutdown comp leak From: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx> commit 5e47f1985d7107331c3f64fb3ec83d66fd73577e upstream. This patch fixes an active I/O shutdown bug for fabric drivers using target_wait_for_sess_cmds(), where se_cmd descriptor shutdown would result in hung tasks waiting indefinitely for se_cmd->cmd_wait_comp to complete(). To address this bug, drop the incorrect list_del_init() usage in target_wait_for_sess_cmds() and always complete() during se_cmd target_release_cmd_kref() put, in order to let caller invoke the final fabric release callback into se_cmd->se_tfo->release_cmd() code. Reported-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx> Tested-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx> Signed-off-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx> Signed-off-by: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/target/target_core_transport.c | 2 -- 1 file changed, 2 deletions(-) --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -2596,8 +2596,6 @@ void target_wait_for_sess_cmds(struct se list_for_each_entry_safe(se_cmd, tmp_cmd, &se_sess->sess_wait_list, se_cmd_list) { - list_del_init(&se_cmd->se_cmd_list); - pr_debug("Waiting for se_cmd: %p t_state: %d, fabric state:" " %d\n", se_cmd, se_cmd->t_state, se_cmd->se_tfo->get_cmd_state(se_cmd)); Patches currently in stable-queue which might be from himanshu.madhani@xxxxxxxxxx are queue-4.5/target-fix-target_release_cmd_kref-shutdown-comp-leak.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html