This patch shouldn't be applied if those branches must only be taken when
the pid_allocation(PIDNS_HASH_ADDING) flag was turned off.
Otherwise, we must turn the PIDNS_HASH_ADDING flag (1U << 31) off
before getting into the switch-cases.
Signed-off-by: Raphael S. Carvalho <raphael.sc...@gmail.com>
---
kernel/pid.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/kernel/pid.c b/kernel/pid.c
index 0db3e79..6bda527 100644
--- a/kernel/pid.c
+++ b/kernel/pid.c
@@ -263,7 +263,10 @@ void free_pid(struct pid *pid)
struct upid *upid = pid->numbers + i;
struct pid_namespace *ns = upid->ns;
hlist_del_rcu(&upid->pid_chain);
- switch(--ns->nr_hashed) {
+
+ /* We must turn the PIDNS_HASH_ADDING flag off to
+ get the actual value of nr_hashed */
+ switch ((--ns->nr_hashed) & ~(PIDNS_HASH_ADDING)) {
case 1:
/* When all that is left in the pid namespace
* is the reaper wake up the reaper. The reaper
--
1.7.2.5
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