fix: block instrumentation: NULL pointer dereference

[lttng-modules.git] / instrumentation / events / lttng-module / block.h

diff --git a/instrumentation/events/lttng-module/block.h b/instrumentation/events/lttng-module/block.h
index 6782cbbef08c53a37a33534ed2a393c0d2067400..16043a01294df83c88f96fd01534fc879abfce37 100644 (file)
--- a/instrumentation/events/lttng-module/block.h
+++ b/instrumentation/events/lttng-module/block.h
@@ -365,7 +365,7 @@ DECLARE_EVENT_CLASS(block_bio,
        ),
 
        TP_fast_assign(
-               tp_assign(dev, bio->bi_bdev->bd_dev)
+               tp_assign(dev, bio->bi_bdev ? bio->bi_bdev->bd_dev : 0)
                tp_assign(sector, bio->bi_sector)
                tp_assign(nr_sector, bio->bi_size >> 9)
                blk_fill_rwbs(rwbs, bio->bi_rw, bio->bi_size)