File vl-Fix-an-assert-failure-in-error-path.patch of Package qemu

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File vl-Fix-an-assert-failure-in-error-path.patch of Package qemu (Revision c0281a3faa162ac19aa446b6abdc419e)

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From: Zhenzhong Duan <zhenzhong.duan@intel.com>
Date: Thu, 10 Jun 2021 16:47:41 +0800
Subject: vl: Fix an assert failure in error path

Git-commit: 38f71349c7c4969bc14da4da1c70b8cc4078d596

Based on the description of error_setg(), the local variable err in
qemu_maybe_daemonize() should be initialized to NULL.

Without fix, the uninitialized *errp triggers assert failure which
doesn't show much valuable information.

Before the fix:
qemu-system-x86_64: ../util/error.c:59: error_setv: Assertion `*errp == NULL' failed.

After fix:
qemu-system-x86_64: cannot create PID file: Cannot open pid file: Permission denied

Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Message-Id: <20210610084741.456260-1-zhenzhong.duan@intel.com>
Cc: qemu-stable@nongnu.org
Fixes: 0546c0609c ("vl: split various early command line options to a separate function", 2020-12-10)
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jose R. Ziviani <jziviani@suse.de>
---
 softmmu/vl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/softmmu/vl.c b/softmmu/vl.c
index 8cb68f21b9f2a5cf159295169ed0..8a0ab39d81b1108826526bf3fc9a 100644
--- a/softmmu/vl.c
+++ b/softmmu/vl.c
@@ -2509,7 +2509,7 @@ static void qemu_process_help_options(void)
 
 static void qemu_maybe_daemonize(const char *pid_file)
 {
-    Error *err;
+    Error *err = NULL;
 
     os_daemonize();
     rcu_disable_atfork();

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File vl-Fix-an-assert-failure-in-error-path.patch of Package qemu (Revision c0281a3faa162ac19aa446b6abdc419e)

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