Fix bug in epoll1 poller (#31211)

BUILD

@@ -2683,6 +2683,7 @@ grpc_cc_library(
         "iomgr_port",
         "posix_event_engine_closure",
         "posix_event_engine_event_poller",
+        "posix_event_engine_internal_errqueue",
         "posix_event_engine_lockfree_event",
         "posix_event_engine_wakeup_fd_posix",
         "posix_event_engine_wakeup_fd_posix_default",

CMakeLists.txt

@@ -9497,6 +9497,7 @@ if(_gRPC_PLATFORM_LINUX OR _gRPC_PLATFORM_MAC OR _gRPC_PLATFORM_POSIX)
     src/core/lib/event_engine/posix_engine/ev_epoll1_linux.cc
     src/core/lib/event_engine/posix_engine/ev_poll_posix.cc
     src/core/lib/event_engine/posix_engine/event_poller_posix_default.cc
+    src/core/lib/event_engine/posix_engine/internal_errqueue.cc
     src/core/lib/event_engine/posix_engine/lockfree_event.cc
     src/core/lib/event_engine/posix_engine/wakeup_fd_eventfd.cc
     src/core/lib/event_engine/posix_engine/wakeup_fd_pipe.cc

build_autogenerated.yaml

@@ -5746,6 +5746,7 @@ targets:
   - src/core/lib/event_engine/posix_engine/ev_poll_posix.h
   - src/core/lib/event_engine/posix_engine/event_poller.h
   - src/core/lib/event_engine/posix_engine/event_poller_posix_default.h
+  - src/core/lib/event_engine/posix_engine/internal_errqueue.h
   - src/core/lib/event_engine/posix_engine/lockfree_event.h
   - src/core/lib/event_engine/posix_engine/posix_engine_closure.h
   - src/core/lib/event_engine/posix_engine/wakeup_fd_eventfd.h
@@ -5757,6 +5758,7 @@ targets:
   - src/core/lib/event_engine/posix_engine/ev_epoll1_linux.cc
   - src/core/lib/event_engine/posix_engine/ev_poll_posix.cc
   - src/core/lib/event_engine/posix_engine/event_poller_posix_default.cc
+  - src/core/lib/event_engine/posix_engine/internal_errqueue.cc
   - src/core/lib/event_engine/posix_engine/lockfree_event.cc
   - src/core/lib/event_engine/posix_engine/wakeup_fd_eventfd.cc
   - src/core/lib/event_engine/posix_engine/wakeup_fd_pipe.cc

src/core/lib/event_engine/posix_engine/ev_epoll1_linux.h

@@ -30,6 +30,7 @@
 
 #include "src/core/lib/event_engine/poller.h"
 #include "src/core/lib/event_engine/posix_engine/event_poller.h"
+#include "src/core/lib/event_engine/posix_engine/internal_errqueue.h"
 #include "src/core/lib/event_engine/posix_engine/wakeup_fd_posix.h"
 #include "src/core/lib/iomgr/port.h"
 
@@ -57,7 +58,7 @@ class Epoll1Poller : public PosixEventPoller {
   void Kick() override;
   Scheduler* GetScheduler() { return scheduler_; }
   void Shutdown() override;
-  bool CanTrackErrors() const override { return true; }
+  bool CanTrackErrors() const override { return KernelSupportsErrqueue(); }
   ~Epoll1Poller() override;
 
  private: