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Stack overflow in recursive bpobj_iterate_impl

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The function bpobj_iterate_impl overflows the stack when bpobjs
are deeply nested. Rewrite the function to eliminate the recursion.

Reviewed-by: Serapheim Dimitropoulos <serapheim@delphix.com>
Reviewed-by: Matt Ahrens <mahrens@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Paul Zuchowski <pzuchowski@datto.com>
Closes #7674
Closes #7675 
Closes #7908
This commit is contained in:
Paul Zuchowski
2019-03-06 12:50:55 -05:00
committed by Brian Behlendorf
parent 96ebc5a1a4
commit a73e8fdb93
3 changed files with 248 additions and 105 deletions
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include/sys/dmu.h
+1
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@@ -740,6 +740,7 @@ struct blkptr *dmu_buf_get_blkptr(dmu_buf_t *db);
* (ie. you've called dmu_tx_hold_object(tx, db->db_object)).
*/
void dmu_buf_will_dirty(dmu_buf_t *db, dmu_tx_t *tx);
boolean_t dmu_buf_is_dirty(dmu_buf_t *db, dmu_tx_t *tx);
void dmu_buf_set_crypt_params(dmu_buf_t *db_fake, boolean_t byteorder,
const uint8_t *salt, const uint8_t *iv, const uint8_t *mac, dmu_tx_t *tx);