Re: elf2dmp: Fix memory leak on main() error paths

[Thomas Huth]

On 26/08/2020 12.15, AlexChen wrote:
> From: AlexChen <alex.chen@huawei.com>
> 
> The 'kdgb' is allocating memory in get_kdbg(), but it is not freed
> in both fill_header() and fill_context() failed branches, fix it.
> 
> Signed-off-by: AlexChen <alex.chen@huawei.com>
> ---
>  contrib/elf2dmp/main.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/contrib/elf2dmp/main.c b/contrib/elf2dmp/main.c
> index 9a2dbc2902..ac746e49e0 100644
> --- a/contrib/elf2dmp/main.c
> +++ b/contrib/elf2dmp/main.c
> @@ -568,12 +568,12 @@ int main(int argc, char *argv[])
>      if (fill_header(&header, &ps, &vs, KdDebuggerDataBlock, kdbg,
>              KdVersionBlock, qemu_elf.state_nr)) {
>          err = 1;
> -        goto out_pdb;
> +        goto out_kdbg;
>      }
> 
>      if (fill_context(kdbg, &vs, &qemu_elf)) {
>          err = 1;
> -        goto out_pdb;
> +        goto out_kdbg;
>      }
> 
>      if (write_dump(&ps, &header, argv[2])) {
> 

I think this could go via qemu-trivial (now on CC:).

Reviewed-by: Thomas Huth <thuth@redhat.com>