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Subject[PATCH] pid:fix a return value in alloc_pid
When I doing a make about linux-next in X86 right now,it prompts a 
warning about "‘retval’ may be used uninitialized in this function
[-Wmaybe-uninitialized]". So I found that undefined 'retval' initially
in alloc_pid(),so the return ERR_PTR(retval) was an uncertain value.
Kmem_cache_alloc() is for sapce,so it will return ERR_PTR(-ENOMEM) if

Signed-off-by: tangbin <>
kernel/pid.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/pid.c b/kernel/pid.c
index ff6cd67..f214094 100644
--- a/kernel/pid.c
+++ b/kernel/pid.c
@@ -177,7 +177,7 @@ struct pid *alloc_pid(struct pid_namespace *ns, pid_t *set_tid,

pid = kmem_cache_alloc(ns->pid_cachep, GFP_KERNEL);
if (!pid)
- return ERR_PTR(retval);
+ return ERR_PTR(-ENOMEM);

tmp = ns;
pid->level = ns->level;

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