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RDMA/qedr: Fix potential memory leak in __qedr_alloc_mr()

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__qedr_alloc_mr() allocates a memory chunk for "mr->info.pbl_table" with
init_mr_info(). When rdma_alloc_tid() and rdma_register_tid() fail, "mr"
is released while "mr->info.pbl_table" is not released, which will lead
to a memory leak.

We should release the "mr->info.pbl_table" with qedr_free_pbl() when error
occurs to fix the memory leak.

Fixes: e0290cce6a ("qedr: Add support for memory registeration verbs")
Link: https://lore.kernel.org/r/20220714061505.2342759-1-niejianglei2021@163.com
Signed-off-by: Jianglei Nie <niejianglei2021@163.com>
Acked-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Jianglei Nie 2022-07-14 14:15:05 +08:00 committed by Leon Romanovsky
parent e39c600049
commit b3236a64dd
1 changed files with 5 additions and 3 deletions
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8
drivers/infiniband/hw/qedr/verbs.c
View file

@ -3082,7 +3082,7 @@ static struct qedr_mr *__qedr_alloc_mr(struct ib_pd *ibpd,
else
DP_ERR(dev, "roce alloc tid returned error %d\n", rc);
goto err0;
goto err1;
}
/* Index only, 18 bit long, lkey = itid << 8 | key */
@ -3106,7 +3106,7 @@ static struct qedr_mr *__qedr_alloc_mr(struct ib_pd *ibpd,
rc = dev->ops->rdma_register_tid(dev->rdma_ctx, &mr->hw_mr);
if (rc) {
DP_ERR(dev, "roce register tid returned an error %d\n", rc);
goto err1;
goto err2;
}
mr->ibmr.lkey = mr->hw_mr.itid << 8 | mr->hw_mr.key;
@ -3115,8 +3115,10 @@ static struct qedr_mr *__qedr_alloc_mr(struct ib_pd *ibpd,
DP_DEBUG(dev, QEDR_MSG_MR, "alloc frmr: %x\n", mr->ibmr.lkey);
return mr;
err1:
err2:
dev->ops->rdma_free_tid(dev->rdma_ctx, mr->hw_mr.itid);
err1:
qedr_free_pbl(dev, &mr->info.pbl_info, mr->info.pbl_table);
err0:
kfree(mr);
return ERR_PTR(rc);