From: sashiko-bot@kernel.org
To: "Jiri Pirko" <jiri@resnulli.us>
Cc: mkoutny@suse.com, "Vasily Gorbik" <gor@linux.ibm.com>,
hannes@cmpxchg.org, tj@kernel.org, linux-s390@vger.kernel.org,
"Heiko Carstens" <hca@linux.ibm.com>,
"Alexander Gordeev" <agordeev@linux.ibm.com>
Subject: Re: [PATCH rdma-next 03/13] RDMA/core: Support renaming a device when changing its net namespace
Date: Fri, 10 Jul 2026 09:56:26 +0000 [thread overview]
Message-ID: <20260710095626.D434B1F000E9@smtp.kernel.org> (raw)
In-Reply-To: <20260709095532.855647-4-jiri@resnulli.us>
Thank you for your contribution! Sashiko AI review found 1 potential issue(s) to consider:
- [Medium] The destination device name requested by userspace is ignored during a net namespace move because NULL is hardcoded in the netlink handler.
--
--- Patch [3]: [PATCH rdma-next 03/13] RDMA/core: Support renaming a device when changing its net namespace ---
commit 481a893ec5cd10a7f8be8c8de249d86cc283c470
Author: Jiri Pirko <jiri@nvidia.com>
RDMA/core: Support renaming a device when changing its net namespace
This patch updates the RDMA core to allow requesting a destination device
name when moving a device to a different network namespace. It modifies
ib_device_set_netns_put to take a requested name and implements the naming
rules during namespace teardown.
> diff --git a/drivers/infiniband/core/nldev.c b/drivers/infiniband/core/nldev.c
> index 3a9ec43a16f1a..3540cb0b9d4fb 100644
> --- a/drivers/infiniband/core/nldev.c
> +++ b/drivers/infiniband/core/nldev.c
> @@ -1194,7 +1194,7 @@ static int nldev_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh,
> u32 ns_fd;
>
> ns_fd = nla_get_u32(tb[RDMA_NLDEV_NET_NS_FD]);
> - err = ib_device_set_netns_put(skb, device, ns_fd);
> + err = ib_device_set_netns_put(skb, device, ns_fd, NULL);
[Severity: Medium]
Does this hardcode NULL instead of extracting and passing the user-provided
device name?
The commit message mentions allowing namespace moves to request a destination
device name, but it appears ib_device_set_netns_put is always called with
NULL here.
How does this interact with the rename logic in nldev_set_doit? If a user
supplies both the RDMA_NLDEV_ATTR_DEV_NAME and RDMA_NLDEV_NET_NS_FD
attributes in the netlink command, will the code enter the rename logic first
and return, completely skipping the net namespace change instead of moving and
renaming the device?
> if (err == -EEXIST)
> NL_SET_ERR_MSG(extack,
> "Device name already exists in the target net namespace");
--
Sashiko AI review · https://sashiko.dev/#/patchset/20260709095532.855647-1-jiri@resnulli.us?part=3
next prev parent reply other threads:[~2026-07-10 9:56 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-09 9:55 [PATCH rdma-next 00/13] RDMA: Make device names unique per net namespace Jiri Pirko
2026-07-09 9:55 ` [PATCH rdma-next 01/13] RDMA/core: Pass the net namespace to the device name lookups Jiri Pirko
2026-07-09 9:55 ` [PATCH rdma-next 02/13] RDMA/core: Handle device name conflicts when changing net namespace Jiri Pirko
2026-07-10 9:56 ` sashiko-bot
2026-07-09 9:55 ` [PATCH rdma-next 03/13] RDMA/core: Support renaming a device when changing its " Jiri Pirko
2026-07-10 9:56 ` sashiko-bot [this message]
2026-07-09 9:55 ` [PATCH rdma-next 04/13] RDMA/nldev: Report net namespace move errors through extack Jiri Pirko
2026-07-09 9:55 ` [PATCH rdma-next 05/13] RDMA/nldev: Allow setting the device name while changing net namespace Jiri Pirko
2026-07-09 9:55 ` [PATCH rdma-next 06/13] net/smc: Look up the pnetid ib device within the " Jiri Pirko
2026-07-10 9:56 ` sashiko-bot
2026-07-09 9:55 ` [PATCH rdma-next 07/13] RDMA/srp: Make the SRP sysfs class net namespace aware Jiri Pirko
2026-07-09 9:55 ` [PATCH rdma-next 08/13] RDMA/cgroup: Scope rdma cgroup device visibility to the net namespace Jiri Pirko
2026-07-09 13:04 ` Michal Koutný
2026-07-10 9:56 ` sashiko-bot
2026-07-09 9:55 ` [PATCH rdma-next 09/13] RDMA/cma: Document that CM configfs cannot be net namespace scoped Jiri Pirko
2026-07-09 9:55 ` [PATCH rdma-next 10/13] RDMA/core: Document the SELinux ibendport net namespace limitation Jiri Pirko
2026-07-09 9:55 ` [PATCH rdma-next 11/13] RDMA/core: Make device names unique per net namespace Jiri Pirko
2026-07-09 9:55 ` [PATCH rdma-next 12/13] RDMA/rxe: Implement disassociate_ucontext callback Jiri Pirko
2026-07-10 4:21 ` Zhu Yanjun
2026-07-10 9:56 ` sashiko-bot
2026-07-09 9:55 ` [PATCH rdma-next 13/13] RDMA/selftests: Add rxe_netns_names test Jiri Pirko
2026-07-10 4:24 ` Zhu Yanjun
2026-07-10 9:56 ` sashiko-bot
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