Merge tag 'v4.14-rc2' into next-general

Linux 4.14-rc2

Sync to v4.14-rc2 for security subsystem developers to track.

1 files changed, 12 insertions, 6 deletions

diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c
index 06615934fed1..0dceb9fa3a06 100644
--- a/drivers/usb/storage/usb.c
+++ b/drivers/usb/storage/usb.c
@@ -315,6 +315,7 @@ static int usb_stor_control_thread(void * __us)
 {
 	struct us_data *us = (struct us_data *)__us;
 	struct Scsi_Host *host = us_to_host(us);
+	struct scsi_cmnd *srb;
 
 	for (;;) {
 		usb_stor_dbg(us, "*** thread sleeping\n");
@@ -330,6 +331,7 @@ static int usb_stor_control_thread(void * __us)
 		scsi_lock(host);
 
 		/* When we are called with no command pending, we're done */
+		srb = us->srb;
 		if (us->srb == NULL) {
 			scsi_unlock(host);
 			mutex_unlock(&us->dev_mutex);
@@ -398,14 +400,11 @@ static int usb_stor_control_thread(void * __us)
 		/* lock access to the state */
 		scsi_lock(host);
 
-		/* indicate that the command is done */
-		if (us->srb->result != DID_ABORT << 16) {
-			usb_stor_dbg(us, "scsi cmd done, result=0x%x\n",
-				     us->srb->result);
-			us->srb->scsi_done(us->srb);
-		} else {
+		/* was the command aborted? */
+		if (us->srb->result == DID_ABORT << 16) {
 SkipForAbort:
 			usb_stor_dbg(us, "scsi command aborted\n");
+			srb = NULL;	/* Don't call srb->scsi_done() */
 		}
 
 		/*
@@ -429,6 +428,13 @@ SkipForAbort:
 
 		/* unlock the device pointers */
 		mutex_unlock(&us->dev_mutex);
+
+		/* now that the locks are released, notify the SCSI core */
+		if (srb) {
+			usb_stor_dbg(us, "scsi cmd done, result=0x%x\n",
+					srb->result);
+			srb->scsi_done(srb);
+		}
 	} /* for (;;) */
 
 	/* Wait until we are told to stop */