Commit 1b194002 authored by Clement Deschamps's avatar Clement Deschamps Committed by Richard Henderson
Browse files

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: default avatarRichard Henderson <richard.henderson@linaro.org>
Signed-off-by: default avatarClement Deschamps <clement.deschamps@greensocs.com>
Message-Id: <20191022140016.918371-1-clement.deschamps@greensocs.com>
Signed-off-by: default avatarRichard Henderson <richard.henderson@linaro.org>
parent 7f445c8c

accel/tcg/translate-all.c

+1 −0
Original line number Diff line number Diff line
@@ -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: