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[Qemu-devel] [PATCH] ppc: fix double-free in cpu_post_load()


From: Greg Kurz
Subject: [Qemu-devel] [PATCH] ppc: fix double-free in cpu_post_load()
Date: Wed, 02 Aug 2017 19:34:16 +0200
User-agent: StGit/0.17.1-20-gc0b1b-dirty

When running nested with KVM PR, ppc_set_compat() fails and QEMU crashes
because of "double free or corruption (!prev)". The crash happens because
error_report_err() has already called error_free().

Signed-off-by: Greg Kurz <address@hidden>
---
 target/ppc/machine.c |    1 -
 1 file changed, 1 deletion(-)

diff --git a/target/ppc/machine.c b/target/ppc/machine.c
index f578156dd411..abe0a1cdf021 100644
--- a/target/ppc/machine.c
+++ b/target/ppc/machine.c
@@ -239,7 +239,6 @@ static int cpu_post_load(void *opaque, int version_id)
         ppc_set_compat(cpu, cpu->compat_pvr, &local_err);
         if (local_err) {
             error_report_err(local_err);
-            error_free(local_err);
             return -1;
         }
     } else




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