8 files changed, 34 insertions, 35 deletions
diff --git a/drivers/block/drbd/Makefile b/drivers/block/drbd/Makefile
index c93e462130ff..67a8b352a1d5 100644
--- a/drivers/block/drbd/Makefile
+++ b/drivers/block/drbd/Makefile
@@ -1,5 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0-only
-drbd-y := drbd_bitmap.o drbd_proc.o
+drbd-y := drbd_buildtag.o drbd_bitmap.o drbd_proc.o
 drbd-y += drbd_worker.o drbd_receiver.o drbd_req.o drbd_actlog.o
 drbd-y += drbd_main.o drbd_strings.o drbd_nl.o
 drbd-y += drbd_interval.o drbd_state.o
diff --git a/drivers/block/drbd/drbd_buildtag.c b/drivers/block/drbd/drbd_buildtag.c
new file mode 100644
index 000000000000..cb1aa66d7d5d
--- /dev/null
+++ b/drivers/block/drbd/drbd_buildtag.c
@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: GPL-2.0-only
+#include <linux/drbd_config.h>
+#include <linux/module.h>
+
+const char *drbd_buildtag(void)
+{
+	/* DRBD built from external sources has here a reference to the
+	 * git hash of the source code.
+	 */
+
+	static char buildtag[38] = "\0uilt-in";
+
+	if (buildtag[0] == 0) {
+#ifdef MODULE
+		sprintf(buildtag, "srcversion: %-24s", THIS_MODULE->srcversion);
+#else
+		buildtag[0] = 'b';
+#endif
+	}
+
+	return buildtag;
+}
diff --git a/drivers/block/drbd/drbd_debugfs.c b/drivers/block/drbd/drbd_debugfs.c
index a72c096aa5b1..12460b584bcb 100644
--- a/drivers/block/drbd/drbd_debugfs.c
+++ b/drivers/block/drbd/drbd_debugfs.c
@@ -844,7 +844,7 @@ static int drbd_version_show(struct seq_file *m, void *ignored)
 {
 	seq_printf(m, "# %s\n", drbd_buildtag());
 	seq_printf(m, "VERSION=%s\n", REL_VERSION);
-	seq_printf(m, "API_VERSION=%u\n", API_VERSION);
+	seq_printf(m, "API_VERSION=%u\n", GENL_MAGIC_VERSION);
 	seq_printf(m, "PRO_VERSION_MIN=%u\n", PRO_VERSION_MIN);
 	seq_printf(m, "PRO_VERSION_MAX=%u\n", PRO_VERSION_MAX);
 	return 0;
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index ae713338aa46..d89b7d03d4c8 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -34,21 +34,12 @@
 #include <linux/prefetch.h>
 #include <linux/drbd_genl_api.h>
 #include <linux/drbd.h>
+#include <linux/drbd_config.h>
 #include "drbd_strings.h"
 #include "drbd_state.h"
 #include "drbd_protocol.h"
 #include "drbd_polymorph_printk.h"
 
-#ifdef __CHECKER__
-# define __protected_by(x)       __attribute__((require_context(x,1,999,"rdwr")))
-# define __protected_read_by(x)  __attribute__((require_context(x,1,999,"read")))
-# define __protected_write_by(x) __attribute__((require_context(x,1,999,"write")))
-#else
-# define __protected_by(x)
-# define __protected_read_by(x)
-# define __protected_write_by(x)
-#endif
-
 /* shared module parameters, defined in drbd_main.c */
 #ifdef CONFIG_DRBD_FAULT_INJECTION
 extern int drbd_enable_faults;
@@ -774,7 +765,7 @@ struct drbd_device {
 	unsigned long flags;
 
 	/* configured by drbdsetup */
-	struct drbd_backing_dev *ldev __protected_by(local);
+	struct drbd_backing_dev *ldev;
 
 	sector_t p_size;     /* partner's disk size */
 	struct request_queue *rq_queue;
diff --git a/drivers/block/drbd/drbd_interval.c b/drivers/block/drbd/drbd_interval.c
index 5024ffd6143d..873beda6de24 100644
--- a/drivers/block/drbd/drbd_interval.c
+++ b/drivers/block/drbd/drbd_interval.c
@@ -58,7 +58,7 @@ drbd_insert_interval(struct rb_root *root, struct drbd_interval *this)
  * drbd_contains_interval  -  check if a tree contains a given interval
  * @root:	red black tree root
  * @sector:	start sector of @interval
- * @interval:	may not be a valid pointer
+ * @interval:	may be an invalid pointer
  *
  * Returns if the tree contains the node @interval with start sector @start.
  * Does not dereference @interval until @interval is known to be a valid object
@@ -95,6 +95,10 @@ drbd_contains_interval(struct rb_root *root, sector_t sector,
 void
 drbd_remove_interval(struct rb_root *root, struct drbd_interval *this)
 {
+	/* avoid endless loop */
+	if (drbd_interval_empty(this))
+		return;
+
 	rb_erase_augmented(&this->rb, root, &augment_callbacks);
 }
 
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index e43dfb9eb6ad..2c764f7ee4a7 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -2899,7 +2899,7 @@ static int __init drbd_init(void)
 
 	pr_info("initialized. "
 	       "Version: " REL_VERSION " (api:%d/proto:%d-%d)\n",
-	       API_VERSION, PRO_VERSION_MIN, PRO_VERSION_MAX);
+	       GENL_MAGIC_VERSION, PRO_VERSION_MIN, PRO_VERSION_MAX);
 	pr_info("%s\n", drbd_buildtag());
 	pr_info("registered as block device major %d\n", DRBD_MAJOR);
 	return 0; /* Success! */
@@ -3776,24 +3776,6 @@ _drbd_insert_fault(struct drbd_device *device, unsigned int type)
 }
 #endif
 
-const char *drbd_buildtag(void)
-{
-	/* DRBD built from external sources has here a reference to the
-	   git hash of the source code. */
-
-	static char buildtag[38] = "\0uilt-in";
-
-	if (buildtag[0] == 0) {
-#ifdef MODULE
-		sprintf(buildtag, "srcversion: %-24s", THIS_MODULE->srcversion);
-#else
-		buildtag[0] = 'b';
-#endif
-	}
-
-	return buildtag;
-}
-
 module_init(drbd_init)
 module_exit(drbd_cleanup)
 
diff --git a/drivers/block/drbd/drbd_proc.c b/drivers/block/drbd/drbd_proc.c
index 2227fb0db1ce..1d0feafceadc 100644
--- a/drivers/block/drbd/drbd_proc.c
+++ b/drivers/block/drbd/drbd_proc.c
@@ -228,7 +228,7 @@ int drbd_seq_show(struct seq_file *seq, void *v)
 	};
 
 	seq_printf(seq, "version: " REL_VERSION " (api:%d/proto:%d-%d)\n%s\n",
-		   API_VERSION, PRO_VERSION_MIN, PRO_VERSION_MAX, drbd_buildtag());
+		   GENL_MAGIC_VERSION, PRO_VERSION_MIN, PRO_VERSION_MAX, drbd_buildtag());
 
 	/*
 	  cs .. connection state
diff --git a/drivers/block/drbd/drbd_vli.h b/drivers/block/drbd/drbd_vli.h
index 1ee81e3c2152..941c511cc4da 100644
--- a/drivers/block/drbd/drbd_vli.h
+++ b/drivers/block/drbd/drbd_vli.h
@@ -327,7 +327,7 @@ static inline int bitstream_get_bits(struct bitstream *bs, u64 *out, int bits)
  */
 static inline int vli_encode_bits(struct bitstream *bs, u64 in)
 {
-	u64 code = code;
+	u64 code;
 	int bits = __vli_encode_bits(&code, in);
 
 	if (bits <= 0)