Re: [PATCH] vl: fix memory leak in configure_accelerators

[Paolo Bonzini <pbonzini@redhat.com>]

On 08/01/20 15:56, Philippe Mathieu-Daudé wrote:
> On 1/8/20 12:42 PM, kuhn.chenqun@huawei.com wrote:
>> From: Chen Qun <kuhn.chenqun@huawei.com>
>>
>> The accel_list forgot to free, the asan output:
>>
>> Direct leak of 16 byte(s) in 1 object(s) allocated from:
>>      #0 0xffff919331cb in __interceptor_malloc
>> (/lib64/libasan.so.4+0xd31cb)
>>      #1 0xffff913f7163 in g_malloc (/lib64/libglib-2.0.so.0+0x57163)
>>      #2 0xffff91413d9b in g_strsplit (/lib64/libglib-2.0.so.0+0x73d9b)
>>      #3 0xaaab42fb58e7 in configure_accelerators /qemu/vl.c:2777
>>      #4 0xaaab42fb58e7 in main /qemu/vl.c:4121
>>      #5 0xffff8f9b0b9f in __libc_start_main (/lib64/libc.so.6+0x20b9f)
>>      #6 0xaaab42fc1dab 
>> (/qemu/build/aarch64-softmmu/qemu-system-aarch64+0x8b1dab)
>>
>> Indirect leak of 4 byte(s) in 1 object(s) allocated from:
>>      #0 0xffff919331cb in __interceptor_malloc
>> (/lib64/libasan.so.4+0xd31cb)
>>      #1 0xffff913f7163 in g_malloc (/lib64/libglib-2.0.so.0+0x57163)
>>      #2 0xffff9141243b in g_strdup (/lib64/libglib-2.0.so.0+0x7243b)
>>      #3 0xffff91413e6f in g_strsplit (/lib64/libglib-2.0.so.0+0x73e6f)
>>      #4 0xaaab42fb58e7 in configure_accelerators /qemu/vl.c:2777
>>      #5 0xaaab42fb58e7 in main /qemu/vl.c:4121
>>      #6 0xffff8f9b0b9f in __libc_start_main (/lib64/libc.so.6+0x20b9f)
>>      #7 0xaaab42fc1dab 
>> (/qemu/build/aarch64-softmmu/qemu-system-aarch64+0x8b1dab)
>>
>> Reported-by: Euler Robot <euler.robot@huawei.com>
>> Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com>
> 
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> 
>> ---
>>   vl.c | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/vl.c b/vl.c
>> index 86474a55c9..035a24e52b 100644
>> --- a/vl.c
>> +++ b/vl.c
>> @@ -2788,6 +2788,7 @@ static void configure_accelerators(const char
>> *progname)
>>                   error_report("invalid accelerator %s", *tmp);
>>               }
>>           }
>> +        g_strfreev(accel_list);
>>       } else {
>>           if (accel != NULL) {
>>               error_report("The -accel and \"-machine accel=\" options
>> are incompatible");
>>
> 

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