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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)
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