This is a note to let you know that I've just added the patch titled RDMA/rxe: Generate a completion for unsupported/invalid opcode to the 4.19-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: rdma-rxe-generate-a-completion-for-unsupported-invalid-opcode.patch and it can be found in the queue-4.19 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 2f917af777011c88e977b9b9a5d00b280d3a59ce Mon Sep 17 00:00:00 2001 From: Xiao Yang <yangx.jy@xxxxxxxxxxx> Date: Sun, 10 Apr 2022 19:35:13 +0800 Subject: RDMA/rxe: Generate a completion for unsupported/invalid opcode From: Xiao Yang <yangx.jy@xxxxxxxxxxx> commit 2f917af777011c88e977b9b9a5d00b280d3a59ce upstream. Current rxe_requester() doesn't generate a completion when processing an unsupported/invalid opcode. If rxe driver doesn't support a new opcode (e.g. RDMA Atomic Write) and RDMA library supports it, an application using the new opcode can reproduce this issue. Fix the issue by calling "goto err;". Fixes: 8700e3e7c485 ("Soft RoCE driver") Link: https://lore.kernel.org/r/20220410113513.27537-1-yangx.jy@xxxxxxxxxxx Signed-off-by: Xiao Yang <yangx.jy@xxxxxxxxxxx> Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/infiniband/sw/rxe/rxe_req.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/infiniband/sw/rxe/rxe_req.c +++ b/drivers/infiniband/sw/rxe/rxe_req.c @@ -680,7 +680,7 @@ next_wqe: opcode = next_opcode(qp, wqe, wqe->wr.opcode); if (unlikely(opcode < 0)) { wqe->status = IB_WC_LOC_QP_OP_ERR; - goto exit; + goto err; } mask = rxe_opcode[opcode].mask; Patches currently in stable-queue which might be from yangx.jy@xxxxxxxxxxx are queue-4.19/rdma-rxe-generate-a-completion-for-unsupported-invalid-opcode.patch