From ed97d0cd78a337450e17eb613bdeec15e729af46 Mon Sep 17 00:00:00 2001 From: Andy Grover Date: Thu, 3 Sep 2015 16:03:44 -0700 Subject: [PATCH] target/user: Fix UFLAG_UNKNOWN_OP handling Calling transport_generic_request_failure() from here causes list corruption. We should be using target_complete_cmd() instead. Which we do in all other cases, so the UNKNOWN_OP case can become just another member of the big else/if chain in tcmu_handle_completion(). Signed-off-by: Andy Grover Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_user.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c index 9fd50be4aab6..d0bb652b65b5 100644 --- a/drivers/target/target_core_user.c +++ b/drivers/target/target_core_user.c @@ -538,14 +538,8 @@ static void tcmu_handle_completion(struct tcmu_cmd *cmd, struct tcmu_cmd_entry * UPDATE_HEAD(udev->data_tail, cmd->data_length, udev->data_size); pr_warn("TCMU: Userspace set UNKNOWN_OP flag on se_cmd %p\n", cmd->se_cmd); - transport_generic_request_failure(cmd->se_cmd, - TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE); - cmd->se_cmd = NULL; - kmem_cache_free(tcmu_cmd_cache, cmd); - return; - } - - if (entry->rsp.scsi_status == SAM_STAT_CHECK_CONDITION) { + entry->rsp.scsi_status = SAM_STAT_CHECK_CONDITION; + } else if (entry->rsp.scsi_status == SAM_STAT_CHECK_CONDITION) { memcpy(se_cmd->sense_buffer, entry->rsp.sense_buffer, se_cmd->scsi_sense_length);