From 56b2eca3fea8ea4fb6ec732b98470a09385cb1eb Mon Sep 17 00:00:00 2001 From: Hariprasad S Date: Thu, 30 Jun 2016 11:44:33 +0530 Subject: RDMA/iw_cxgb4: Use kfree_skb instead of kfree The commit 0f8ab0b6e91b4d53 ("RDMA/iw_cxgb4: Low resource fixes for Memory registration") from Jun 10, 2016, leads to the following static checker warning: drivers/infiniband/hw/cxgb4/mem.c:612 c4iw_alloc_mw() error: use kfree_skb() here instead of kfree(mhp->dereg_skb) Also fixes skb leak in c4iw_dealloc_mw Fixes: 0f8ab0b6e91b4d53 ("RDMA/iw_cxgb4: Low resource fixes for Memory registration") Reported-by: Dan Carpenter Signed-off-by: Steve Wise Signed-off-by: Hariprasad Shenai Signed-off-by: Doug Ledford --- drivers/infiniband/hw/cxgb4/mem.c | 26 +++++++++++++++----------- 1 file changed, 15 insertions(+), 11 deletions(-) (limited to 'drivers/infiniband/hw/cxgb4') diff --git a/drivers/infiniband/hw/cxgb4/mem.c b/drivers/infiniband/hw/cxgb4/mem.c index 5d0aa55e82d4..0b91b0f4df71 100644 --- a/drivers/infiniband/hw/cxgb4/mem.c +++ b/drivers/infiniband/hw/cxgb4/mem.c @@ -603,16 +603,13 @@ struct ib_mw *c4iw_alloc_mw(struct ib_pd *pd, enum ib_mw_type type, mhp->dereg_skb = alloc_skb(SGE_MAX_WR_LEN, GFP_KERNEL); if (!mhp->dereg_skb) { - kfree(mhp); - return ERR_PTR(-ENOMEM); + ret = -ENOMEM; + goto free_mhp; } ret = allocate_window(&rhp->rdev, &stag, php->pdid); - if (ret) { - kfree(mhp->dereg_skb); - kfree(mhp); - return ERR_PTR(ret); - } + if (ret) + goto free_skb; mhp->rhp = rhp; mhp->attr.pdid = php->pdid; mhp->attr.type = FW_RI_STAG_MW; @@ -620,13 +617,19 @@ struct ib_mw *c4iw_alloc_mw(struct ib_pd *pd, enum ib_mw_type type, mmid = (stag) >> 8; mhp->ibmw.rkey = stag; if (insert_handle(rhp, &rhp->mmidr, mhp, mmid)) { - deallocate_window(&rhp->rdev, mhp->attr.stag, mhp->dereg_skb); - kfree(mhp->dereg_skb); - kfree(mhp); - return ERR_PTR(-ENOMEM); + ret = -ENOMEM; + goto dealloc_win; } PDBG("%s mmid 0x%x mhp %p stag 0x%x\n", __func__, mmid, mhp, stag); return &(mhp->ibmw); + +dealloc_win: + deallocate_window(&rhp->rdev, mhp->attr.stag, mhp->dereg_skb); +free_skb: + kfree_skb(mhp->dereg_skb); +free_mhp: + kfree(mhp); + return ERR_PTR(ret); } int c4iw_dealloc_mw(struct ib_mw *mw) @@ -640,6 +643,7 @@ int c4iw_dealloc_mw(struct ib_mw *mw) mmid = (mw->rkey) >> 8; remove_handle(rhp, &rhp->mmidr, mmid); deallocate_window(&rhp->rdev, mhp->attr.stag, mhp->dereg_skb); + kfree_skb(mhp->dereg_skb); kfree(mhp); PDBG("%s ib_mw %p mmid 0x%x ptr %p\n", __func__, mw, mmid, mhp); return 0; -- cgit v1.2.3-59-g8ed1b