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MDEV-22521 Server crashes in traverse_role_graph_up or Assertion `user' fails in traverse_role_graph_impl

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This commit is contained in:
Sergei Golubchik 2020-07-30 10:01:49 +02:00
parent 4860fe244b
commit 4635218cb0
3 changed files with 16 additions and 0 deletions
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5
mysql-test/suite/roles/drop_current_role.result Normal file
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@ -0,0 +1,5 @@
create role r;
set role r;
drop role r;
revoke all on *.* from current_role;
ERROR 42000: There is no such grant defined for user 'r' on host ''

9
mysql-test/suite/roles/drop_current_role.test Normal file
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@ -0,0 +1,9 @@
--source include/not_embedded.inc
#
# MDEV-22521 Server crashes in traverse_role_graph_up or Assertion `user' fails in traverse_role_graph_impl
#
create role r;
set role r;
drop role r;
error ER_NONEXISTING_GRANT;
revoke all on *.* from current_role;

2
sql/sql_acl.cc
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@ -4977,6 +4977,8 @@ static void propagate_role_grants(ACL_ROLE *role,
enum PRIVS_TO_MERGE::what what,
const char *db= 0, const char *name= 0)
{
if (!role)
return;
mysql_mutex_assert_owner(&acl_cache->lock);
PRIVS_TO_MERGE data= { what, db, name };