From 1b1940026c95b941d9cf75bd38b37fe3feaa78a7 Mon Sep 17 00:00:00 2001 From: Clement Deschamps Date: Tue, 22 Oct 2019 16:00:16 +0200 Subject: [PATCH] translate-all: fix uninitialized tb->orig_tb This fixes a segmentation fault in icount mode when executing from an IO region. TB is marked as CF_NOCACHE but tb->orig_tb is not initialized (equals previous value in code_gen_buffer). The issue happens in cpu_io_recompile() when it tries to invalidate orig_tb. Reviewed-by: Richard Henderson Signed-off-by: Clement Deschamps Message-Id: <20191022140016.918371-1-clement.deschamps@greensocs.com> Signed-off-by: Richard Henderson --- accel/tcg/translate-all.c | 1 + 1 file changed, 1 insertion(+) diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c index 66d4bc4341..f9b7ba159d 100644 --- a/accel/tcg/translate-all.c +++ b/accel/tcg/translate-all.c @@ -1722,6 +1722,7 @@ TranslationBlock *tb_gen_code(CPUState *cpu, tb->cs_base = cs_base; tb->flags = flags; tb->cflags = cflags; + tb->orig_tb = NULL; tb->trace_vcpu_dstate = *cpu->trace_dstate; tcg_ctx->tb_cflags = cflags; tb_overflow: -- 2.11.4.GIT