ipc: Use the same namespace to modify and validate

In the 1f5c135 ("ipc: Store ipc sysctls in the ipc namespace") I missed that in addition to the modification of sem_ctls[3], the change is validated. This validation must occur in the same namespace. Link: https://lore.kernel.org/lkml/[email protected]/ Fixes: 1f5c135 ("ipc: Store ipc sysctls in the ipc namespace") Signed-off-by: Alexey Gladkov <[email protected]> Link: https://lkml.kernel.org/r/b3cb9a25cce6becbef77186bc1216071a08a969b.1651584847.git.legion@kernel.org Signed-off-by: Eric W. Biederman <[email protected]>
mpe · May 3, 2022 · def7343 · def7343
1 parent 1f5c135
commit def7343
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/ipc/ipc_sysctl.c b/ipc/ipc_sysctl.c
@@ -68,7 +68,7 @@ static int proc_ipc_sem_dointvec(struct ctl_table *table, int write,
 	ret = proc_dointvec(table, write, buffer, lenp, ppos);
 
 	if (!ret)
-		ret = sem_check_semmni(current->nsproxy->ipc_ns);
+		ret = sem_check_semmni(ns);
 
 	/*
 	 * Reset the semmni value if an error happens.