Re: [Qemu-devel] [PATCH v2 1/1] blockjob: leak fix, remove from txn when failing early

[John Snow <jsnow@redhat.com>]

On 03/28/2018 10:28 AM, Marc-André Lureau wrote:
> On Wed, Mar 28, 2018 at 4:09 PM, Jeff Cody <jcody@redhat.com> wrote:
>> From: Marc-André Lureau <marcandre.lureau@redhat.com>
>>
>> This fixes leaks found by ASAN such as:
>>   GTESTER tests/test-blockjob
>> =================================================================
>> ==31442==ERROR: LeakSanitizer: detected memory leaks
>>
>> Direct leak of 24 byte(s) in 1 object(s) allocated from:
>>     #0 0x7f88483cba38 in __interceptor_calloc (/lib64/libasan.so.4+0xdea38)
>>     #1 0x7f8845e1bd77 in g_malloc0 ../glib/gmem.c:129
>>     #2 0x7f8845e1c04b in g_malloc0_n ../glib/gmem.c:360
>>     #3 0x5584d2732498 in block_job_txn_new /home/elmarco/src/qemu/blockjob.c:172
>>     #4 0x5584d2739b28 in block_job_create /home/elmarco/src/qemu/blockjob.c:973
>>     #5 0x5584d270ae31 in mk_job /home/elmarco/src/qemu/tests/test-blockjob.c:34
>>     #6 0x5584d270b1c1 in do_test_id /home/elmarco/src/qemu/tests/test-blockjob.c:57
>>     #7 0x5584d270b65c in test_job_ids /home/elmarco/src/qemu/tests/test-blockjob.c:118
>>     #8 0x7f8845e40b69 in test_case_run ../glib/gtestutils.c:2255
>>     #9 0x7f8845e40f29 in g_test_run_suite_internal ../glib/gtestutils.c:2339
>>     #10 0x7f8845e40fd2 in g_test_run_suite_internal ../glib/gtestutils.c:2351
>>     #11 0x7f8845e411e9 in g_test_run_suite ../glib/gtestutils.c:2426
>>     #12 0x7f8845e3fe72 in g_test_run ../glib/gtestutils.c:1692
>>     #13 0x5584d270d6e2 in main /home/elmarco/src/qemu/tests/test-blockjob.c:377
>>     #14 0x7f8843641f29 in __libc_start_main (/lib64/libc.so.6+0x20f29)
>>
>> Add an assert to make sure that the job doesn't have associated txn before free().
>>
>> [Jeff Cody: N.B., used updated patch provided by John Snow]
> 
> Looks good to me, so :)
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> 
> thanks

Thanks for catching it!