netdev - Re: [PATCH iproute2] rdma: stat: initialize ret in stat_qp_show_parse

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Message-ID: <CAPpH65yk95Yg7wZiNLSebNJ8=hDPff7ixNzxuXzu0yjXYu=gCA@mail.gmail.com>
Date:   Sun, 18 Apr 2021 14:00:38 +0200
From:   Andrea Claudi <aclaudi@...hat.com>
To:     Leon Romanovsky <leon@...nel.org>
Cc:     linux-netdev <netdev@...r.kernel.org>,
        Stephen Hemminger <stephen@...workplumber.org>,
        David Ahern <dsahern@...il.com>
Subject: Re: [PATCH iproute2] rdma: stat: initialize ret in stat_qp_show_parse_cb()

On Sun, Apr 18, 2021 at 1:07 PM Leon Romanovsky <leon@...nel.org> wrote:
>
> On Wed, Apr 14, 2021 at 12:50:57AM +0200, Andrea Claudi wrote:
> > In the unlikely case in which the mnl_attr_for_each_nested() cycle is
> > not executed, this function return an uninitialized value.
> >
> > Fix this initializing ret to 0.
> >
> > Fixes: 5937552b42e4 ("rdma: Add "stat qp show" support")
> > Signed-off-by: Andrea Claudi <aclaudi@...hat.com>
> > ---
> >  rdma/stat.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/rdma/stat.c b/rdma/stat.c
> > index 75d45288..3abedae7 100644
> > --- a/rdma/stat.c
> > +++ b/rdma/stat.c
> > @@ -307,7 +307,7 @@ static int stat_qp_show_parse_cb(const struct nlmsghdr *nlh, void *data)
> >       struct rd *rd = data;
> >       const char *name;
> >       uint32_t idx;
> > -     int ret;
> > +     int ret = 0;
>
> It should be MNL_CB_OK which is 1 and not 0.
>
> Thanks.
>

Hi Leon, and thanks for pointing this out.
As this is already merged, I'll submit a fix.

Regards,
Andrea

> >
> >       mnl_attr_parse(nlh, 0, rd_attr_cb, tb);
> >       if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_DEV_NAME] ||
> > --
> > 2.30.2
> >
>