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-rw-r--r--fs/exec.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/fs/exec.c b/fs/exec.c
index 2255dc72dee..955a8eb66d7 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -50,6 +50,7 @@
#include <linux/tsacct_kern.h>
#include <linux/cn_proc.h>
#include <linux/audit.h>
+#include <linux/signalfd.h>
#include <asm/uaccess.h>
#include <asm/mmu_context.h>
@@ -582,6 +583,13 @@ static int de_thread(struct task_struct *tsk)
int count;
/*
+ * Tell all the sighand listeners that this sighand has
+ * been detached. The signalfd_detach() function grabs the
+ * sighand lock, if signal listeners are present on the sighand.
+ */
+ signalfd_detach(tsk);
+
+ /*
* If we don't share sighandlers, then we aren't sharing anything
* and we can just re-use it all.
*/
@@ -757,8 +765,7 @@ no_thread_group:
spin_unlock(&oldsighand->siglock);
write_unlock_irq(&tasklist_lock);
- if (atomic_dec_and_test(&oldsighand->count))
- kmem_cache_free(sighand_cachep, oldsighand);
+ __cleanup_sighand(oldsighand);
}
BUG_ON(!thread_group_leader(tsk));