| Message ID | 570D6B06.8080204@sandisk.com (mailing list archive) |
|---|---|
| State | Accepted |
| Headers | show |
On 4/13/2016 12:39 AM, Bart Van Assche wrote: > Avoid that the following BUG() is triggered against a debug > kernel: > Looks good. Reviewed-by: Max Gurtovoy <maxg@mellanox.com> > > diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c > index 7672b19..30c3dfc 100644 > --- a/drivers/infiniband/ulp/srp/ib_srp.c > +++ b/drivers/infiniband/ulp/srp/ib_srp.c > @@ -1503,7 +1503,7 @@ static int srp_map_idb(struct srp_rdma_ch *ch, struct srp_request *req, > > if (dev->use_fast_reg) { > state.sg = idb_sg; > - sg_set_buf(idb_sg, req->indirect_desc, idb_len); > + sg_init_one(idb_sg, req->indirect_desc, idb_len); > idb_sg->dma_address = req->indirect_dma_addr; /* hack! */ > #ifdef CONFIG_NEED_SG_DMA_LENGTH > idb_sg->dma_length = idb_sg->length; /* hack^2 */ > -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Looks good,
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
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diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c index 7672b19..30c3dfc 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.c +++ b/drivers/infiniband/ulp/srp/ib_srp.c @@ -1503,7 +1503,7 @@ static int srp_map_idb(struct srp_rdma_ch *ch, struct srp_request *req, if (dev->use_fast_reg) { state.sg = idb_sg; - sg_set_buf(idb_sg, req->indirect_desc, idb_len); + sg_init_one(idb_sg, req->indirect_desc, idb_len); idb_sg->dma_address = req->indirect_dma_addr; /* hack! */ #ifdef CONFIG_NEED_SG_DMA_LENGTH idb_sg->dma_length = idb_sg->length; /* hack^2 */
Avoid that the following BUG() is triggered against a debug kernel: kernel BUG at include/linux/scatterlist.h:92! RIP: 0010:[<ffffffffa0467199>] [<ffffffffa0467199>] srp_map_idb+0x199/0x1a0 [ib_srp] Call Trace: [<ffffffffa04685fa>] srp_map_data+0x84a/0x890 [ib_srp] [<ffffffffa0469674>] srp_queuecommand+0x1e4/0x610 [ib_srp] [<ffffffff813f5a5e>] scsi_dispatch_cmd+0x9e/0x180 [<ffffffff813f8b07>] scsi_request_fn+0x477/0x610 [<ffffffff81298ffe>] __blk_run_queue+0x2e/0x40 [<ffffffff81299070>] blk_delay_work+0x20/0x30 [<ffffffff81071f07>] process_one_work+0x197/0x480 [<ffffffff81072239>] worker_thread+0x49/0x490 [<ffffffff810787ea>] kthread+0xea/0x100 [<ffffffff8159b632>] ret_from_fork+0x22/0x40 Fixes: f7f7aab1a5c0 ("IB/srp: Convert to new registration API") Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Sagi Grimberg <sagi@grimberg.me> Cc: Christoph Hellwig <hch@lst.de> Cc: <stable@vger.kernel.org> # v4.4+ --- drivers/infiniband/ulp/srp/ib_srp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)