https://github.com/curl/curl/commit/ff5091aa9f73802e894b1cbdf24ab84e103200e2 From: Andy Pan Date: Thu, 12 Dec 2024 12:48:56 +0000 Subject: [PATCH] async-thread: avoid closing eventfd twice When employing eventfd for socketpair, there is only one file descriptor. Closing that fd twice might result in fd corruption. Thus, we should avoid closing the eventfd twice, following the pattern in lib/multi.c. Fixes #15725 Closes #15727 Reported-by: Christian Heusel --- lib/asyn-thread.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/lib/asyn-thread.c b/lib/asyn-thread.c index a58e4b790494ab..32d496b107cb0a 100644 --- a/lib/asyn-thread.c +++ b/lib/asyn-thread.c @@ -195,9 +195,11 @@ void destroy_thread_sync_data(struct thread_sync_data *tsd) * close one end of the socket pair (may be done in resolver thread); * the other end (for reading) is always closed in the parent thread. */ +#ifndef USE_EVENTFD if(tsd->sock_pair[1] != CURL_SOCKET_BAD) { wakeup_close(tsd->sock_pair[1]); } +#endif #endif memset(tsd, 0, sizeof(*tsd)); }