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posix: avoid use-after-free in signal handler

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This commit is contained in:
Matthias Ringwald 2021-07-18 14:14:41 +02:00
parent 34c6d5e068
commit 783a8debb9
1 changed files with 6 additions and 4 deletions
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10
platform/posix/btstack_signal.c
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@ -51,6 +51,12 @@ static void signal_callback(void * arg){
} }
static void * signal_thread(void *arg) { static void * signal_thread(void *arg) {
// prepare registration
btstack_context_callback_registration_t registration;
memset(&registration, 0, sizeof(btstack_context_callback_registration_t));
registration.callback = &signal_callback;
registration.context = arg;
while (1){ while (1){
// wait for signal // wait for signal
sigset_t sigset; sigset_t sigset;
@ -60,10 +66,6 @@ static void * signal_thread(void *arg) {
(void) sigwait(&sigset, &sig); (void) sigwait(&sigset, &sig);
// execute callback on main thread // execute callback on main thread
btstack_context_callback_registration_t registration;
memset(&registration, 0, sizeof(btstack_context_callback_registration_t));
registration.callback = &signal_callback;
registration.context = arg;
btstack_run_loop_execute_on_main_thread(&registration); btstack_run_loop_execute_on_main_thread(&registration);
} }
return NULL; return NULL;