| Message ID | 20200302155814.9896-1-bmt@zurich.ibm.com |
|---|---|
| State | Not Applicable |
| Delegated to: | David Miller |
| Headers | show |
| Series | [for-rc,v2] RDMA/siw: Fix failure handling during device creation | expand |
On Mon, Mar 02, 2020 at 04:58:14PM +0100, Bernard Metzler wrote: > A failing call to ib_device_set_netdev() during device creation > caused system crash due to xa_destroy of uninitialized xarray > hit by device deallocation. Fixed by moving xarray initialization > before potential device deallocation. > > Fixes: bdcf26bf9b3a (rdma/siw: network and RDMA core interface) Fixes line should be slightly different. Fixes: bdcf26bf9b3a ("rdma/siw: network and RDMA core interface") Thanks
On Mon, Mar 02, 2020 at 04:58:14PM +0100, Bernard Metzler wrote: > A failing call to ib_device_set_netdev() during device creation > caused system crash due to xa_destroy of uninitialized xarray > hit by device deallocation. Fixed by moving xarray initialization > before potential device deallocation. > > Fixes: bdcf26bf9b3a (rdma/siw: network and RDMA core interface) > Reported-by: syzbot+2e80962bedd9559fe0b3@syzkaller.appspotmail.com > Signed-off-by: Bernard Metzler <bmt@zurich.ibm.com> > --- > v1 -> v2: > - Fix here only potential system crash during failing device > creation, but not missing correct error propagation. > > drivers/infiniband/sw/siw/siw_main.c | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) Applied to for-rc Thanks, Jason
diff --git a/drivers/infiniband/sw/siw/siw_main.c b/drivers/infiniband/sw/siw/siw_main.c index 96ed349c0939..5cd40fb9e20c 100644 --- a/drivers/infiniband/sw/siw/siw_main.c +++ b/drivers/infiniband/sw/siw/siw_main.c @@ -388,6 +388,9 @@ static struct siw_device *siw_device_create(struct net_device *netdev) { .max_segment_size = SZ_2G }; base_dev->num_comp_vectors = num_possible_cpus(); + xa_init_flags(&sdev->qp_xa, XA_FLAGS_ALLOC1); + xa_init_flags(&sdev->mem_xa, XA_FLAGS_ALLOC1); + ib_set_device_ops(base_dev, &siw_device_ops); rv = ib_device_set_netdev(base_dev, netdev, 1); if (rv) @@ -415,9 +418,6 @@ static struct siw_device *siw_device_create(struct net_device *netdev) sdev->attrs.max_srq_wr = SIW_MAX_SRQ_WR; sdev->attrs.max_srq_sge = SIW_MAX_SGE; - xa_init_flags(&sdev->qp_xa, XA_FLAGS_ALLOC1); - xa_init_flags(&sdev->mem_xa, XA_FLAGS_ALLOC1); - INIT_LIST_HEAD(&sdev->cep_list); INIT_LIST_HEAD(&sdev->qp_list);
A failing call to ib_device_set_netdev() during device creation caused system crash due to xa_destroy of uninitialized xarray hit by device deallocation. Fixed by moving xarray initialization before potential device deallocation. Fixes: bdcf26bf9b3a (rdma/siw: network and RDMA core interface) Reported-by: syzbot+2e80962bedd9559fe0b3@syzkaller.appspotmail.com Signed-off-by: Bernard Metzler <bmt@zurich.ibm.com> --- v1 -> v2: - Fix here only potential system crash during failing device creation, but not missing correct error propagation. drivers/infiniband/sw/siw/siw_main.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)