On Fri, Oct 28, 2022 at 09:58:56AM +0300, Leon Romanovsky wrote: > ppc64_defconfig) produced this warning: > > WARNING: modpost: drivers/infiniband/core/ib_core.o: section mismatch in reference: .init_module (section: .init.text) -> .nldev_exit (section: .exit.text) > > Fix it by removing __init/__exit markers as nldev is part of ib_core.ko > and as such doesn't require any special notations for entry/exit functions. This isn't what the problem is, the patch Stephen reported: commit ad9394a3da33995dff828dbfd4540421e535bec9 (ko-rdma/for-rc) Author: Chen Zhongjin <chenzhongjin@xxxxxxxxxx> Date: Tue Oct 25 10:41:46 2022 +0800 RDMA/core: Fix null-ptr-deref in ib_core_cleanup() Adds a call to an __exit function from an __init function: @@ -2815,10 +2815,18 @@ static int __init ib_core_init(void) +err_parent: + rdma_nl_unregister(RDMA_NL_LS); + nldev_exit(); + unregister_pernet_device(&rdma_dev_net_ops); Which is not allowed All that is required is to drop the __exit from nldev_exit, I'm going to squash it in since I had to rebase it anyhow. Jason