libcurl v8.11.1: apply patch for netlink error fix

L/LibCURL/LibCURL@8/build_tarballs.jl

@@ -1,5 +1,5 @@
 include("../common.jl")
 
-build_libcurl(ARGS, "LibCURL", v"8.16.0"; with_zstd=true)
+build_libcurl(ARGS, "LibCURL", v"8.11.1"; with_zstd=true)
 
-# Build trigger: 2
+# Build trigger: 3

L/LibCURL/common.jl

@@ -64,8 +64,12 @@ function build_libcurl(ARGS, name::String, version::VersionNumber; with_zstd=fal
     # Disable nss only for CURL < 8.16
     without_nss = version < v"8.16.0"
 
+    # Apply eventfd patch only for v8+ (USE_EVENTFD doesn't exist in v7)
+    apply_eventfd_patch = version >= v"8"
+
     config = "THIS_IS_CURL=$(this_is_curl_jll)\n"
     config *= "MACOS_USE_OPENSSL=$(macos_use_openssl)\n"
+    config *= "APPLY_EVENTFD_PATCH=$(apply_eventfd_patch)\n"
     if with_zstd
 	config *= "HAVE_ZSTD=true\n"
     end
@@ -80,6 +84,11 @@ function build_libcurl(ARGS, name::String, version::VersionNumber; with_zstd=fal
     # Address <https://github.com/curl/curl/issues/12849>
     atomic_patch -p1 $WORKSPACE/srcdir/memdup.patch
 
+    # Address <https://github.com/curl/curl/issues/15725> (only for v8+)
+    if [[ "${APPLY_EVENTFD_PATCH}" == "true" ]]; then
+        atomic_patch -p1 $WORKSPACE/srcdir/eventfd-double-close.patch
+    fi
+
     # Holy crow we really configure the bitlets out of this thing
     FLAGS=(
         # Disable....almost everything

L/LibCURL/patches/eventfd-double-close.patch

@@ -0,0 +1,35 @@
+From ff5091aa9f73802e894b1cbdf24ab84e103200e2 Mon Sep 17 00:00:00 2001
+From: Andy Pan <[email protected]>
+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 a58e4b790494..32d496b107cb 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));
+-- 
+2.47.1