1 files changed, 0 insertions, 56 deletions
diff --git a/main/musl/0001-reorder-thread-list-unlink-in-pthread_exit-after-all.patch b/main/musl/0001-reorder-thread-list-unlink-in-pthread_exit-after-all.patch
deleted file mode 100644
index 2706d1516ab..00000000000
--- a/main/musl/0001-reorder-thread-list-unlink-in-pthread_exit-after-all.patch
+++ /dev/null
@@ -1,56 +0,0 @@
-From 4d5aa20a94a2d3fae3e69289dc23ecafbd0c16c4 Mon Sep 17 00:00:00 2001
-From: Rich Felker <dalias@aerifal.cx>
-Date: Fri, 22 May 2020 17:35:14 -0400
-Subject: [PATCH 1/4] reorder thread list unlink in pthread_exit after all
- locks
-
-since the backend for LOCK() skips locking if single-threaded, it's
-unsafe to make the process appear single-threaded before the last use
-of lock.
-
-this fixes potential unsynchronized access to a linked list via
-__dl_thread_cleanup.
----
- src/thread/pthread_create.c | 19 +++++++++++--------
- 1 file changed, 11 insertions(+), 8 deletions(-)
-
-diff --git a/src/thread/pthread_create.c b/src/thread/pthread_create.c
-index 5f491092..6a3b0c21 100644
---- a/src/thread/pthread_create.c
-+++ b/src/thread/pthread_create.c
-@@ -90,14 +90,7 @@ _Noreturn void __pthread_exit(void *result)
- 		exit(0);
- 	}
- 
--	/* At this point we are committed to thread termination. Unlink
--	 * the thread from the list. This change will not be visible
--	 * until the lock is released, which only happens after SYS_exit
--	 * has been called, via the exit futex address pointing at the lock. */
--	libc.threads_minus_1--;
--	self->next->prev = self->prev;
--	self->prev->next = self->next;
--	self->prev = self->next = self;
-+	/* At this point we are committed to thread termination. */
- 
- 	/* Process robust list in userspace to handle non-pshared mutexes
- 	 * and the detached thread case where the robust list head will
-@@ -121,6 +114,16 @@ _Noreturn void __pthread_exit(void *result)
- 	__do_orphaned_stdio_locks();
- 	__dl_thread_cleanup();
- 
-+	/* Last, unlink thread from the list. This change will not be visible
-+	 * until the lock is released, which only happens after SYS_exit
-+	 * has been called, via the exit futex address pointing at the lock.
-+	 * This needs to happen after any possible calls to LOCK() that might
-+	 * skip locking if libc.threads_minus_1 is zero. */
-+	libc.threads_minus_1--;
-+	self->next->prev = self->prev;
-+	self->prev->next = self->next;
-+	self->prev = self->next = self;
-+
- 	/* This atomic potentially competes with a concurrent pthread_detach
- 	 * call; the loser is responsible for freeing thread resources. */
- 	int state = a_cas(&self->detach_state, DT_JOINABLE, DT_EXITING);
--- 
-2.21.0
-