Jan 28, 2026 · Jan 28, 2026
diff --git a/Misc/NEWS.d/next/Core and Builtins/2026-01-23-20-20-42.gh-issue-144194.IbXfxd.rst b/Misc/NEWS.d/next/Core and Builtins/2026-01-23-20-20-42.gh-issue-144194.IbXfxd.rst
 Fix error handling in perf jitdump initialization on memory allocation failure.
diff --git a/Python/perf_jit_trampoline.c b/Python/perf_jit_trampoline.c
        0                        // Offset 0 (first page)
    );

    if (perf_jit_map_state.mapped_buffer == NULL) {
    if (perf_jit_map_state.mapped_buffer == MAP_FAILED) {
        perf_jit_map_state.mapped_buffer = NULL;
        close(fd);
        return NULL;  // Memory mapping failed
    }
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		Fix error handling in perf jitdump initialization on memory allocation failure.
Original file line number	Diff line number	Diff line change
Expand Up		@@ -1053,7 +1053,8 @@ static void* perf_map_jit_init(void) {
		0 // Offset 0 (first page)
		);

		if (perf_jit_map_state.mapped_buffer == NULL) {
		if (perf_jit_map_state.mapped_buffer == MAP_FAILED) {
		perf_jit_map_state.mapped_buffer = NULL;
		close(fd);
		return NULL; // Memory mapping failed
		}
Expand Down