From: Sebastian Andrzej Siewior Date: Wed, 26 Jun 2019 17:44:13 +0200 Subject: [PATCH 271/353] Revert "futex: Ensure lock/unlock symetry versus pi_lock and hash bucket lock" Origin: https://git.kernel.org/cgit/linux/kernel/git/rt/linux-stable-rt.git/commit?id=38511a2c94b5edfab3a2e17aea53fb79880cf8c0 [ Upstream commit 6a773b70cf105b46298ed3b44e77c102ce31d9ec ] Drop the RT fixup, the futex code will be changed to avoid the need for the workaround. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Steven Rostedt (VMware) --- kernel/futex.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/kernel/futex.c b/kernel/futex.c index a5a263a3efbf..3449a716a378 100644 --- a/kernel/futex.c +++ b/kernel/futex.c @@ -962,9 +962,7 @@ static void exit_pi_state_list(struct task_struct *curr) if (head->next != next) { /* retain curr->pi_lock for the loop invariant */ raw_spin_unlock(&pi_state->pi_mutex.wait_lock); - raw_spin_unlock_irq(&curr->pi_lock); spin_unlock(&hb->lock); - raw_spin_lock_irq(&curr->pi_lock); put_pi_state(pi_state); continue; }