[PATCH v2 0/2] fix mismatches between g_strsplit and g_free

[PATCH v2 0/2] fix mismatches between g_strsplit and g_free

[pannengyuan]

From: Pan Nengyuan <pannengyuan@huawei.com>

v1: fix a mismatch in vl.c
v2: fix mismatch in vl.c and qga/main.c

Pan Nengyuan (2):
  vl: Don't mismatch g_strsplit()/g_free()
  qga/main: Don't mismatch g_strsplit/g_free in split_list()

 qga/main.c | 2 +-
 vl.c       | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

-- 
2.21.0.windows.1

[PATCH v2 1/2] vl: Don't mismatch g_strsplit()/g_free()

[pannengyuan]

From: Pan Nengyuan <pannengyuan@huawei.com>

It's a mismatch between g_strsplit and g_free, it will cause a memory leak as follow:

[root@localhost]# ./aarch64-softmmu/qemu-system-aarch64 -accel help
Accelerators supported in QEMU binary:
tcg
kvm
=================================================================
==1207900==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 8 byte(s) in 2 object(s) allocated from:
    #0 0xfffd700231cb in __interceptor_malloc (/lib64/libasan.so.4+0xd31cb)
    #1 0xfffd6ec57163 in g_malloc (/lib64/libglib-2.0.so.0+0x57163)
    #2 0xfffd6ec724d7 in g_strndup (/lib64/libglib-2.0.so.0+0x724d7)
    #3 0xfffd6ec73d3f in g_strsplit (/lib64/libglib-2.0.so.0+0x73d3f)
    #4 0xaaab66be5077 in main /mnt/sdc/qemu-master/qemu-4.2.0-rc0/vl.c:3517
    #5 0xfffd6e140b9f in __libc_start_main (/lib64/libc.so.6+0x20b9f)
    #6 0xaaab66bf0f53  (./build/aarch64-softmmu/qemu-system-aarch64+0x8a0f53)

Direct leak of 2 byte(s) in 2 object(s) allocated from:
    #0 0xfffd700231cb in __interceptor_malloc (/lib64/libasan.so.4+0xd31cb)
    #1 0xfffd6ec57163 in g_malloc (/lib64/libglib-2.0.so.0+0x57163)
    #2 0xfffd6ec7243b in g_strdup (/lib64/libglib-2.0.so.0+0x7243b)
    #3 0xfffd6ec73e6f in g_strsplit (/lib64/libglib-2.0.so.0+0x73e6f)
    #4 0xaaab66be5077 in main /mnt/sdc/qemu-master/qemu-4.2.0-rc0/vl.c:3517
    #5 0xfffd6e140b9f in __libc_start_main (/lib64/libc.so.6+0x20b9f)
    #6 0xaaab66bf0f53  (./build/aarch64-softmmu/qemu-system-aarch64+0x8a0f53)

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com>
---
Changes v2 to v1:
- fix another on in qga/main.c
---
 vl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vl.c b/vl.c
index 86474a55c9..2fa5cb3b9a 100644
--- a/vl.c
+++ b/vl.c
@@ -3476,7 +3476,7 @@ int main(int argc, char **argv, char **envp)
                             gchar **optname = g_strsplit(typename,
                                                          ACCEL_CLASS_SUFFIX, 0);
                             printf("%s\n", optname[0]);
-                            g_free(optname);
+                            g_strfreev(optname);
                         }
                         g_free(typename);
                     }
-- 
2.21.0.windows.1

[PATCH v2 2/2] qga/main: Don't mismatch g_strsplit/g_free in split_list()

[pannengyuan]

From: Pan Nengyuan <pannengyuan@huawei.com>

fix a mismatch between g_strsplit and g_free

Reported-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com>
---
Changes v2 to v1:
- fix a mismatch in qga/main.c
---
 qga/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/qga/main.c b/qga/main.c
index c35c2a2120..a72ae074f4 100644
--- a/qga/main.c
+++ b/qga/main.c
@@ -933,7 +933,7 @@ static GList *split_list(const gchar *str, const gchar *delim)
     for (i = 0; strv[i]; i++) {
         list = g_list_prepend(list, strv[i]);
     }
-    g_free(strv);
+    g_strfreev(strv);
 
     return list;
 }
-- 
2.21.0.windows.1

Re: [PATCH v2 0/2] fix mismatches between g_strsplit and g_free

[no-reply]

Patchew URL: https://patchew.org/QEMU/20200110091710.53424-1-pannengyuan@huawei.com/



Hi,

This series failed the docker-quick@centos7 build test. Please find the testing commands and
their output below. If you have Docker installed, you can probably reproduce it
locally.

=== TEST SCRIPT BEGIN ===
#!/bin/bash
make docker-image-centos7 V=1 NETWORK=1
time make docker-test-quick@centos7 SHOW_ENV=1 J=14 NETWORK=1
=== TEST SCRIPT END ===

  TEST    check-unit: tests/test-crypto-cipher
  TEST    check-unit: tests/test-crypto-secret
  TEST    check-unit: tests/test-qga
ERROR - too few tests run (expected 25, got 17)
  TEST    iotest-qcow2: 029
make: *** [check-unit] Error 1
make: *** Waiting for unfinished jobs....
  TEST    iotest-qcow2: 031
  TEST    iotest-qcow2: 032
---
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['sudo', '-n', 'docker', 'run', '--label', 'com.qemu.instance.uuid=327e1beba9794e3085a9e39927d1dfe5', '-u', '1003', '--security-opt', 'seccomp=unconfined', '--rm', '-e', 'TARGET_LIST=', '-e', 'EXTRA_CONFIGURE_OPTS=', '-e', 'V=', '-e', 'J=14', '-e', 'DEBUG=', '-e', 'SHOW_ENV=1', '-e', 'CCACHE_DIR=/var/tmp/ccache', '-v', '/home/patchew2/.cache/qemu-docker-ccache:/var/tmp/ccache:z', '-v', '/var/tmp/patchew-tester-tmp-1qgcfifd/src/docker-src.2020-01-10-04.27.30.12511:/var/tmp/qemu:z,ro', 'qemu:centos7', '/var/tmp/qemu/run', 'test-quick']' returned non-zero exit status 2.
filter=--filter=label=com.qemu.instance.uuid=327e1beba9794e3085a9e39927d1dfe5
make[1]: *** [docker-run] Error 1
make[1]: Leaving directory `/var/tmp/patchew-tester-tmp-1qgcfifd/src'
make: *** [docker-run-test-quick@centos7] Error 2

real    10m55.759s
user    0m8.010s


The full log is available at
http://patchew.org/logs/20200110091710.53424-1-pannengyuan@huawei.com/testing.docker-quick@centos7/?type=message.
---
Email generated automatically by Patchew [https://patchew.org/].
Please send your feedback to patchew-devel@redhat.com

Re: [PATCH v2 2/2] qga/main: Don't mismatch g_strsplit/g_free in split_list()

[Marc-André Lureau]

Hi

On Fri, Jan 10, 2020 at 1:18 PM <pannengyuan@huawei.com> wrote:
>
> From: Pan Nengyuan <pannengyuan@huawei.com>
>
> fix a mismatch between g_strsplit and g_free
>
> Reported-by: Laurent Vivier <laurent@vivier.eu>
> Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com>

NACK, the elements are added to the returned list.

> ---
> Changes v2 to v1:
> - fix a mismatch in qga/main.c
> ---
>  qga/main.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/qga/main.c b/qga/main.c
> index c35c2a2120..a72ae074f4 100644
> --- a/qga/main.c
> +++ b/qga/main.c
> @@ -933,7 +933,7 @@ static GList *split_list(const gchar *str, const gchar *delim)
>      for (i = 0; strv[i]; i++) {
>          list = g_list_prepend(list, strv[i]);
>      }
> -    g_free(strv);
> +    g_strfreev(strv);
>
>      return list;
>  }
> --
> 2.21.0.windows.1
>
>
>


-- 
Marc-André Lureau

Re: [PATCH v2 2/2] qga/main: Don't mismatch g_strsplit/g_free in split_list()

[Laurent Vivier]

Le 10/01/2020 à 10:41, Marc-André Lureau a écrit :
> Hi
> 
> On Fri, Jan 10, 2020 at 1:18 PM <pannengyuan@huawei.com> wrote:
>>
>> From: Pan Nengyuan <pannengyuan@huawei.com>
>>
>> fix a mismatch between g_strsplit and g_free
>>
>> Reported-by: Laurent Vivier <laurent@vivier.eu>
>> Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com>
> 
> NACK, the elements are added to the returned list.

It's my fault, sorry...

Laurent

Re: [PATCH v2 0/2] fix mismatches between g_strsplit and g_free

[Paolo Bonzini]

On 10/01/20 10:17, pannengyuan@huawei.com wrote:
> From: Pan Nengyuan <pannengyuan@huawei.com>
> 
> v1: fix a mismatch in vl.c
> v2: fix mismatch in vl.c and qga/main.c
> 
> Pan Nengyuan (2):
>   vl: Don't mismatch g_strsplit()/g_free()
>   qga/main: Don't mismatch g_strsplit/g_free in split_list()
> 
>  qga/main.c | 2 +-
>  vl.c       | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)
> 

Queued patch 1, thanks.

Paolo