| Message ID | 1605837422-42724-1-git-send-email-wangxiongfeng2@huawei.com (mailing list archive) |
|---|---|
| State | Accepted |
| Delegated to: | Jason Gunthorpe |
| Headers | show |
| Series | [v2] IB/mthca: fix return value of error branch in mthca_init_cq() | expand |
On Fri, Nov 20, 2020 at 09:57:02AM +0800, Xiongfeng Wang wrote: > We return 'err' in the error branch, but this variable may be set as > zero by the above code. Fix it by setting 'err' as a negative value > before we goto the error label. > > Fixes: 74c2174e7be5 ("IB uverbs: add mthca user CQ support") > Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") > Reported-by: Hulk Robot <hulkci@huawei.com> > Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com> > --- > drivers/infiniband/hw/mthca/mthca_cq.c | 10 ++++++---- > 1 file changed, 6 insertions(+), 4 deletions(-) Applied to for-rc, thanks Jason
diff --git a/drivers/infiniband/hw/mthca/mthca_cq.c b/drivers/infiniband/hw/mthca/mthca_cq.c index c3cfea2..119b257 100644 --- a/drivers/infiniband/hw/mthca/mthca_cq.c +++ b/drivers/infiniband/hw/mthca/mthca_cq.c @@ -803,8 +803,10 @@ int mthca_init_cq(struct mthca_dev *dev, int nent, } mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL); - if (IS_ERR(mailbox)) + if (IS_ERR(mailbox)) { + err = PTR_ERR(mailbox); goto err_out_arm; + } cq_context = mailbox->buf; @@ -846,9 +848,9 @@ int mthca_init_cq(struct mthca_dev *dev, int nent, } spin_lock_irq(&dev->cq_table.lock); - if (mthca_array_set(&dev->cq_table.cq, - cq->cqn & (dev->limits.num_cqs - 1), - cq)) { + err = mthca_array_set(&dev->cq_table.cq, + cq->cqn & (dev->limits.num_cqs - 1), cq); + if (err) { spin_unlock_irq(&dev->cq_table.lock); goto err_out_free_mr; }
We return 'err' in the error branch, but this variable may be set as zero by the above code. Fix it by setting 'err' as a negative value before we goto the error label. Fixes: 74c2174e7be5 ("IB uverbs: add mthca user CQ support") Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com> --- drivers/infiniband/hw/mthca/mthca_cq.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-)