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Prevent Segfault in EventPipe on disable #56104

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merged 4 commits into from
Jul 27, 2021
Merged

Prevent Segfault in EventPipe on disable #56104

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84f6dd4
dup filter_data to prevent segfault
Jul 21, 2021
ffa978b
fix typo and incorrect const
Jul 21, 2021
601dafb
PR feedback
Jul 23, 2021
fd39140
call fini in free
Jul 26, 2021
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2 changes: 1 addition & 1 deletion src/native/eventpipe/ep-types.h
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Original file line number Diff line number Diff line change
Expand Up @@ -63,7 +63,7 @@ struct _EventPipeProviderCallbackData {
#else
struct _EventPipeProviderCallbackData_Internal {
#endif
const ep_char8_t *filter_data;
ep_char8_t *filter_data;
EventPipeCallback callback_function;
void *callback_data;
int64_t keywords;
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11 changes: 8 additions & 3 deletions src/native/eventpipe/ep.c
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Original file line number Diff line number Diff line change
Expand Up @@ -246,8 +246,10 @@ ep_provider_callback_data_alloc_copy (EventPipeProviderCallbackData *provider_ca
EventPipeProviderCallbackData *instance = ep_rt_object_alloc (EventPipeProviderCallbackData);
ep_raise_error_if_nok (instance != NULL);

if (provider_callback_data_src)
if (provider_callback_data_src) {
*instance = *provider_callback_data_src;
instance->filter_data = ep_rt_utf8_string_dup (provider_callback_data_src->filter_data);
}

ep_on_exit:
return instance;
Expand All @@ -270,7 +272,7 @@ ep_provider_callback_data_init (
{
EP_ASSERT (provider_callback_data != NULL);

provider_callback_data->filter_data = filter_data;
provider_callback_data->filter_data = ep_rt_utf8_string_dup (filter_data);
provider_callback_data->callback_function = callback_function;
provider_callback_data->callback_data = callback_data;
provider_callback_data->keywords = keywords;
Expand All @@ -289,19 +291,22 @@ ep_provider_callback_data_init_copy (
EP_ASSERT (provider_callback_data_src != NULL);

*provider_callback_data_dst = *provider_callback_data_src;
provider_callback_data_dst->filter_data = ep_rt_utf8_string_dup (provider_callback_data_src->filter_data);
return provider_callback_data_dst;
}

void
ep_provider_callback_data_fini (EventPipeProviderCallbackData *provider_callback_data)
{
;
ep_return_void_if_nok (provider_callback_data != NULL);
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ep_rt_utf8_string_free (provider_callback_data->filter_data);
}

void
ep_provider_callback_data_free (EventPipeProviderCallbackData *provider_callback_data)
{
ep_return_void_if_nok (provider_callback_data != NULL);
ep_provider_callback_data_fini (provider_callback_data);
ep_rt_object_free (provider_callback_data);
}

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