* [PATCH v2] __cxa_thread_atexit_impl: Abort on allocation failure [BZ #18524]
@ 2021-07-28 7:28 Siddhesh Poyarekar via Libc-alpha
2021-07-28 7:31 ` Florian Weimer via Libc-alpha
0 siblings, 1 reply; 2+ messages in thread
From: Siddhesh Poyarekar via Libc-alpha @ 2021-07-28 7:28 UTC (permalink / raw)
To: libc-alpha; +Cc: fweimer
Abort in the unlikely event that allocation fails when trying to
register a TLS destructor.
---
stdlib/cxa_thread_atexit_impl.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/stdlib/cxa_thread_atexit_impl.c b/stdlib/cxa_thread_atexit_impl.c
index 577ed30931..d789f043f2 100644
--- a/stdlib/cxa_thread_atexit_impl.c
+++ b/stdlib/cxa_thread_atexit_impl.c
@@ -72,6 +72,7 @@
is not very different from a case where __call_tls_dtors is called after
_dl_close_worker on the DSO and hence is an accepted execution. */
+#include <stdio.h>
#include <stdlib.h>
#include <ldsodefs.h>
@@ -104,6 +105,8 @@ __cxa_thread_atexit_impl (dtor_func func, void *obj, void *dso_symbol)
/* Prepend. */
struct dtor_list *new = calloc (1, sizeof (struct dtor_list));
+ if (__glibc_unlikely (new == NULL))
+ __libc_fatal ("failed to register TLS destructor: out of memory");
new->func = func;
new->obj = obj;
new->next = tls_dtor_list;
--
2.31.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH v2] __cxa_thread_atexit_impl: Abort on allocation failure [BZ #18524]
2021-07-28 7:28 [PATCH v2] __cxa_thread_atexit_impl: Abort on allocation failure [BZ #18524] Siddhesh Poyarekar via Libc-alpha
@ 2021-07-28 7:31 ` Florian Weimer via Libc-alpha
0 siblings, 0 replies; 2+ messages in thread
From: Florian Weimer via Libc-alpha @ 2021-07-28 7:31 UTC (permalink / raw)
To: Siddhesh Poyarekar; +Cc: libc-alpha
* Siddhesh Poyarekar:
> @@ -104,6 +105,8 @@ __cxa_thread_atexit_impl (dtor_func func, void *obj, void *dso_symbol)
>
> /* Prepend. */
> struct dtor_list *new = calloc (1, sizeof (struct dtor_list));
> + if (__glibc_unlikely (new == NULL))
> + __libc_fatal ("failed to register TLS destructor: out of memory");
> new->func = func;
> new->obj = obj;
> new->next = tls_dtor_list;
Please add "Fatal glibc error: " and "\n".
Thanks,
Florian
^ permalink raw reply [flat|nested] 2+ messages in thread
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