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authorPavel Emelyanov <xemul@openvz.org>2007-11-26 21:21:49 +0100
committerIngo Molnar <mingo@elte.hu>2007-11-26 21:21:49 +0100
commit5e8869bb699d50be5c0733edfc71cfcd5b43e10a (patch)
tree5ce6e7b25ffb2c78bb876861e4b0c83fd6f9b565 /kernel/user.c
parent2ffbb8377c7a0713baf6644e285adc27a5654582 (diff)
downloadlwn-5e8869bb699d50be5c0733edfc71cfcd5b43e10a.tar.gz
lwn-5e8869bb699d50be5c0733edfc71cfcd5b43e10a.zip
sched: don't forget to unlock uids_mutex on error paths
The commit commit 5cb350baf580017da38199625b7365b1763d7180 Author: Dhaval Giani <dhaval@linux.vnet.ibm.com> Date: Mon Oct 15 17:00:14 2007 +0200 sched: group scheduling, sysfs tunables introduced the uids_mutex and the helpers to lock/unlock it. Unfortunately, the error paths of alloc_uid() were not patched to unlock it. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Acked-by: Dhaval Giani <dhaval@linux.vnet.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/user.c')
-rw-r--r--kernel/user.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/kernel/user.c b/kernel/user.c
index 0f3aa0234107..8320a87f3e5a 100644
--- a/kernel/user.c
+++ b/kernel/user.c
@@ -337,8 +337,11 @@ struct user_struct * alloc_uid(struct user_namespace *ns, uid_t uid)
struct user_struct *new;
new = kmem_cache_alloc(uid_cachep, GFP_KERNEL);
- if (!new)
+ if (!new) {
+ uids_mutex_unlock();
return NULL;
+ }
+
new->uid = uid;
atomic_set(&new->__count, 1);
atomic_set(&new->processes, 0);
@@ -355,6 +358,7 @@ struct user_struct * alloc_uid(struct user_namespace *ns, uid_t uid)
if (alloc_uid_keyring(new, current) < 0) {
kmem_cache_free(uid_cachep, new);
+ uids_mutex_unlock();
return NULL;
}
@@ -362,6 +366,7 @@ struct user_struct * alloc_uid(struct user_namespace *ns, uid_t uid)
key_put(new->uid_keyring);
key_put(new->session_keyring);
kmem_cache_free(uid_cachep, new);
+ uids_mutex_unlock();
return NULL;
}