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-rw-r--r--block/blk-flush.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/block/blk-flush.c b/block/blk-flush.c
index 53abb5c73d99..fd5cee9f1a3b 100644
--- a/block/blk-flush.c
+++ b/block/blk-flush.c
@@ -231,6 +231,12 @@ static void flush_end_io(struct request *flush_rq, blk_status_t error)
return;
}
+ /*
+ * Flush request has to be marked as IDLE when it is really ended
+ * because its .end_io() is called from timeout code path too for
+ * avoiding use-after-free.
+ */
+ WRITE_ONCE(flush_rq->state, MQ_RQ_IDLE);
if (fq->rq_status != BLK_STS_OK)
error = fq->rq_status;