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Fix cloning into already dirty dbufs.

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Undirty the dbuf and destroy its buffer when cloning into it.

Coverity ID: CID-1535375
Reported-by: Richard Yao
Reported-by: Benjamin Coddington
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Pawel Jakub Dawidek <pawel@dawidek.net>
Closes #14655
This commit is contained in:
Pawel Jakub Dawidek
2023-03-24 18:18:35 +01:00
committed by GitHub
parent 5b5f518687
commit ce0e1cc402
3 changed files with 26 additions and 13 deletions
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module/zfs/dbuf.c
+1 -2
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@@ -175,7 +175,6 @@ struct {
continue; \
}
static boolean_t dbuf_undirty(dmu_buf_impl_t *db, dmu_tx_t *tx);
static void dbuf_write(dbuf_dirty_record_t *dr, arc_buf_t *data, dmu_tx_t *tx);
static void dbuf_sync_leaf_verify_bonus_dnode(dbuf_dirty_record_t *dr);
static int dbuf_read_verify_dnode_crypt(dmu_buf_impl_t *db, uint32_t flags);
@@ -2518,7 +2517,7 @@ dbuf_undirty_bonus(dbuf_dirty_record_t *dr)
* Undirty a buffer in the transaction group referenced by the given
* transaction. Return whether this evicted the dbuf.
*/
static boolean_t
boolean_t
dbuf_undirty(dmu_buf_impl_t *db, dmu_tx_t *tx)
{
uint64_t txg = tx->tx_txg;