File _service:tar_git:0001-hooks-Reset-reference-count-of-condition-variable-be.patch of Package libhybris

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Matti=20Lehtim=C3=A4ki?= <matti.lehtimaki@jolla.com>
Date: Wed, 20 Oct 2021 15:17:26 +0000
Subject: [PATCH] hooks: Reset reference count of condition variable before
 pthread_cond_destroy.

Bionic and glibc implementations of pthread_cond_destroy are different.
Bionic implementation is trivial and does not block whereas the glibc
implementation requires that there is no thread waiting for the condition
variable when it is destroyed and bionic code does not always follow this
requirement which can cause a deadlock because two or more threads
are waiting for the same condition variable.
---
 hybris/common/hooks.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/hybris/common/hooks.c b/hybris/common/hooks.c
index a35fe44066b4c462da6768395e459b00ecb6abf7..7183fc1953bf3f89d9ac98bcdecbde9498cb2ea8 100644
--- a/hybris/common/hooks.c
+++ b/hybris/common/hooks.c
@@ -905,6 +905,13 @@ static int _hybris_hook_pthread_cond_destroy(pthread_cond_t *cond)
     }
 
     if (!hybris_is_pointer_in_shm((void*)realcond)) {
+        /* Bionic and glibc implementations of pthread_cond_destroy are different.
+         * Bionic implementation does not block whereas the glibc implementation
+         * requires that there are no threads waiting for the condition variable
+         * when it is destroyed and bionic code does not always follow this
+         * requirement. To prevent deadlocks reset the reference count of the
+         * condition variable. */
+        realcond->__data.__wrefs = 0;
         ret = pthread_cond_destroy(realcond);
         free(realcond);
     }