| commit | 8881016fe3737dd010e2288b24bbf38efe77e236 | [log] [tgz] |
|---|---|---|
| author | Justin Funston <justin.funston@bytedance.com> | Tue Jun 24 10:23:18 2025 -0700 |
| committer | Nicolas Morey <nmorey@suse.com> | Mon Jul 07 16:48:58 2025 +0200 |
| tree | 55d59114efdbbb0290d3e2f833abaadbf3c6dfc0 | |
| parent | 3b2374c62d8229f578ceb7e57c26043689784e3b [diff] |
rxe: Fix double unlock in cq_ex polling
[ Upstream commit 5e7aa41022adb9f8ab8de1edf5ab2f5ed412e97a ]
Fix a bug in rxe cq_ex polling where the cq lock is unlocked twice causing
undefined behavior. According the man page, the user should call
`cq_end_poll` even if `cq_next_poll` returns ENOENT. This fix removes the
`pthread_spin_unlock` call in `cq_next_poll` so that it is correctly
called only once in `cq_end_poll`.
Fixes: e3af50b ("Provider/rxe: Implement Ibv_create_cq_ex verb")
Signed-off-by: Justin Funston <justin.funston@bytedance.com>
Signed-off-by: Nicolas Morey <nmorey@suse.com>
This is the userspace components for the Linux Kernel's drivers/infiniband subsystem. Specifically this contains the userspace libraries for the following device nodes:
The userspace component of the libibverbs RDMA kernel drivers are included under the providers/ directory. Support for the following Kernel RDMA drivers is included:
Additional service daemons are provided for:
This project uses a cmake based build system. Quick start:
$ bash build.sh
build/bin will contain the sample programs and build/lib will contain the shared libraries. The build is configured to run all the programs ‘in-place’ and cannot be installed.
NOTE: It is not currently easy to run from the build directory, the plugins only load from the system path.
$ apt-get install build-essential cmake gcc libudev-dev libnl-3-dev libnl-route-3-dev ninja-build pkg-config valgrind python3-dev cython3 python3-docutils pandoc
Supported releases:
$ dnf install cmake gcc libnl3-devel libudev-devel pkgconfig valgrind-devel ninja-build python3-devel python3-Cython python3-docutils pandoc
NOTE: Fedora Core uses the name ‘ninja-build’ for the ‘ninja’ command.
$ zypper install cmake gcc libnl3-devel libudev-devel ninja pkg-config valgrind-devel python3-devel python3-Cython python3-docutils pandoc
Install required packages:
$ yum install cmake gcc libnl3-devel libudev-devel make pkgconfig valgrind-devel
Developers on CentOS 7 or Amazon Linux 2 are suggested to install more modern tooling for the best experience.
CentOS 7:
$ yum install epel-release $ yum install cmake3 ninja-build pandoc
Amazon Linux 2:
$ amazon-linux-extras install epel $ yum install cmake3 ninja-build pandoc
NOTE: EPEL uses the name ‘ninja-build’ for the ‘ninja’ command, and ‘cmake3’ for the ‘cmake’ command.
To set up software RDMA on an existing interface with either of the available drivers, use the following commands, substituting <DRIVER> with the name of the driver of your choice (rdma_rxe or siw) and <TYPE> with the type corresponding to the driver (rxe or siw).
# modprobe <DRIVER> # rdma link add <NAME> type <TYPE> netdev <DEVICE>
Please note that you need version of iproute2 recent enough is required for the command above to work.
You can use either ibv_devices or rdma link to verify that the device was successfully added.
Bugs should be reported to the linux-rdma@vger.kernel.org mailing list In your bug report, please include:
Information about your system:
How to reproduce the bug.
If the bug is a crash, the exact output printed out when the crash occurred, including any kernel messages produced.