1 files changed, 14 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c
index 7e49984d4331..70409bb90a95 100644
--- a/arch/powerpc/kernel/signal_64.c
+++ b/arch/powerpc/kernel/signal_64.c
@@ -676,7 +676,21 @@ int sys_rt_sigreturn(unsigned long r3, unsigned long r4, unsigned long r5,
         if (__copy_from_user(&set, &uc->uc_sigmask, sizeof(set)))
                 goto badframe;
         set_current_blocked(&set);
+
 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
+        /*
+         * If there is a transactional state then throw it away.
+         * The purpose of a sigreturn is to destroy all traces of the
+         * signal frame, this includes any transactional state created
+         * within in. We only check for suspended as we can never be
+         * active in the kernel, we are active, there is nothing better to
+         * do than go ahead and Bad Thing later.
+         * The cause is not important as there will never be a
+         * recheckpoint so it's not user visible.
+         */
+        if (MSR_TM_SUSPENDED(mfmsr()))
+                tm_reclaim_current(0);
+
         if (__get_user(msr, &uc->uc_mcontext.gp_regs[PT_MSR]))
                 goto badframe;
         if (MSR_TM_ACTIVE(msr)) {