netdev - RE: [EXT] Re: [PATCH net-next,v2 2/2] qed: Add XRC to RoCE

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 20 May 2020 21:20:53 +0000
From:   Yuval Basson <ybason@...vell.com>
To:     David Miller <davem@...emloft.net>
CC:     Michal Kalderon <mkalderon@...vell.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: [EXT] Re: [PATCH net-next,v2 2/2] qed: Add XRC to RoCE

> From: Yuval Basson <ybason@...vell.com>
> Date: Tue, 19 May 2020 23:51:26 +0300
> 
> > @@ -1748,24 +1839,26 @@ static int qed_rdma_modify_srq(void
> *rdma_cxt,
> >  	u16 opaque_fid, srq_id;
> >  	struct qed_bmap *bmap;
> >  	u32 returned_id;
> > +	u16 offset;
> >  	int rc;
> >
> > -	bmap = &p_hwfn->p_rdma_info->srq_map;
> > +	bmap = qed_rdma_get_srq_bmap(p_hwfn, in_params->is_xrc);
> >  	spin_lock_bh(&p_hwfn->p_rdma_info->lock);
> >  	rc = qed_rdma_bmap_alloc_id(p_hwfn, bmap, &returned_id);
> >  	spin_unlock_bh(&p_hwfn->p_rdma_info->lock);
> >
> >  	if (rc) {
> > -		DP_NOTICE(p_hwfn, "failed to allocate srq id\n");
> > +		DP_NOTICE(p_hwfn,
> > +			  "failed to allocate xrc/srq id (is_xrc=%u)\n",
> > +			  in_params->is_xrc);
> >  		return rc;
> >  	}
> >
> > -	elem_type = QED_ELEM_SRQ;
> > +	elem_type = (in_params->is_xrc) ? (QED_ELEM_XRC_SRQ) :
> (QED_ELEM_SRQ);
> >  	rc = qed_cxt_dynamic_ilt_alloc(p_hwfn, elem_type, returned_id);
> >  	if (rc)
> >  		goto err;
> 
> This "if (rc)" error path will leak 'returned_id' won't it?
I don't think so.. this allocation is not part of this patch. It is handled here - 
err:
        spin_lock_bh(&p_hwfn->p_rdma_info->lock);
        qed_bmap_release_id(p_hwfn, bmap, returned_id);
        spin_unlock_bh(&p_hwfn->p_rdma_info->lock);