Illumos 5095 - panic when adding a duplicate dbuf to dn_dbufs

5095 panic when adding a duplicate dbuf to dn_dbufs
Author: Alex Reece <alex@delphix.com>
Reviewed by: Adam Leventhal <adam.leventhal@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Mattew Ahrens <mahrens@delphix.com>
Reviewed by: Dan Kimmel <dan.kimmel@delphix.com>
Reviewed by: Dan McDonald <danmcd@omniti.com>
Reviewed by: Josef Sipek <jeffpc@josefsipek.net>
Approved by: Robert Mustacchi <rm@joyent.com>

References:
  https://www.illumos.org/issues/5095
  https://github.com/illumos/illumos-gate/commit/86bb58a

Ported-by: Chris Dunlop <chris@onthe.net.au>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
Alex Reece
2015-04-02 02:10:58 +11:00
committed by Brian Behlendorf
parent 5aea3644d6
commit 9925c28cde
4 changed files with 37 additions and 24 deletions
+1 -3
View File
@@ -94,8 +94,6 @@ dbuf_cons(void *vdb, void *unused, int kmflag)
cv_init(&db->db_changed, NULL, CV_DEFAULT, NULL);
refcount_create(&db->db_holds);
db->db_creation = gethrtime();
return (0);
}
@@ -884,7 +882,7 @@ dbuf_free_range(dnode_t *dn, uint64_t start_blkid, uint64_t end_blkid,
db_seach = kmem_alloc(sizeof (dmu_buf_impl_t), KM_SLEEP);
db_search->db_level = 0;
db_search->db_blkid = start_blkid;
db_search->db_creation = 0;
db_search->db_state = DB_SEARCH;
mutex_enter(&dn->dn_dbufs_mtx);
if (start_blkid >= dn->dn_unlisted_l0_blkid && !freespill) {