3.16.35-rc1 review patch. If anyone has any objections, please let me know.
------------------ From: Himanshu Madhani <[email protected]> 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 <[email protected]> Tested-by: Himanshu Madhani <[email protected]> Signed-off-by: Himanshu Madhani <[email protected]> Signed-off-by: Nicholas Bellinger <[email protected]> Signed-off-by: Ben Hutchings <[email protected]> --- 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 @@ -2540,8 +2540,6 @@ 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));
