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Disable inactive uvreqs caching when compiled with sanitizers

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When isc__nm_uvreq_t gets deactivated, it could be just put onto array
stack to be reused later to save some initialization time.
Unfortunately, this might hide some use-after-free errors.

Disable the inactive uvreqs caching when compiled with Address or
Thread Sanitizer.
This commit is contained in:
Ondřej Surý
2022-02-24 00:14:26 +01:00
parent 3b2d680c5b
commit be339b3c83
1 changed files with 4 additions and 0 deletions
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4
lib/isc/netmgr/netmgr.c
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@@ -2512,10 +2512,14 @@ isc___nm_uvreq_put(isc__nm_uvreq_t **req0, isc_nmsocket_t *sock FLARG) {
handle = req->handle;
req->handle = NULL;
#if !__SANITIZE_ADDRESS__ && !__SANITIZE_THREAD__
if (!isc__nmsocket_active(sock) ||
!isc_astack_trypush(sock->inactivereqs, req)) {
isc_mem_put(sock->mgr->mctx, req, sizeof(*req));
}
#else /* !__SANITIZE_ADDRESS__ && !__SANITIZE_THREAD__ */
isc_mem_put(sock->mgr->mctx, req, sizeof(*req));
#endif /* !__SANITIZE_ADDRESS__ && !__SANITIZE_THREAD__ */
if (handle != NULL) {
isc__nmhandle_detach(&handle FLARG_PASS);