rottenwheel/monero
1
0
Fork 0
mirror of https://codeberg.org/anoncontributorxmr/monero.git synced 2024-11-10 05:03:26 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Workaround VL32 cursor refcounting miscount

Browse Source 
Don't try to deref cursor page if txn's pagelist is empty
This commit is contained in:
Howard Chu 2017-01-31 10:38:12 +00:00
parent 15eb2bcf6f
commit edfd7f6e07
No known key found for this signature in database
GPG Key ID: FD2A70B44AB11BA7
1 changed files with 9 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
external/db_drivers/liblmdb/mdb.c vendored
View File

@ -1953,13 +1953,15 @@ static void
mdb_cursor_unref(MDB_cursor *mc)
{
int i;
if (!mc->mc_snum || !mc->mc_pg[0] || IS_SUBP(mc->mc_pg[0]))
return;
for (i=0; i<mc->mc_snum; i++)
mdb_page_unref(mc->mc_txn, mc->mc_pg[i]);
if (mc->mc_ovpg) {
mdb_page_unref(mc->mc_txn, mc->mc_ovpg);
mc->mc_ovpg = 0;
if (mc->mc_txn->mt_rpages[0].mid) {
if (!mc->mc_snum || !mc->mc_pg[0] || IS_SUBP(mc->mc_pg[0]))
return;
for (i=0; i<mc->mc_snum; i++)
mdb_page_unref(mc->mc_txn, mc->mc_pg[i]);
if (mc->mc_ovpg) {
mdb_page_unref(mc->mc_txn, mc->mc_ovpg);
mc->mc_ovpg = 0;
}
}
mc->mc_snum = mc->mc_top = 0;
mc->mc_pg[0] = NULL;