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third-party-mirror/linux-rdma/rdma-core/d20d0dab1bbcfb1cd8d26c5152a8b37f220f0902
commit
d20d0dab1bbcfb1cd8d26c5152a8b37f220f0902
[log]
author
Hector Cao <hector.cao@canonical.com>
Mon Jun 01 09:07:53 2026 +0200
committer
Hector Cao <hector.cao@canonical.com>
Tue Jun 09 15:14:03 2026 +0200
tree
815da492f2b5a94883c174144a2707f10d555827
parent
1c73934b264115f436c8e6944eb5aecf6903ec85 [diff]
librdmacm/preload.c: fix duplicate LFS symbols definitions

85f9747 introduces the preload of fcntl64 and it fails to build on armhf:

Assembler messages:
 Error: symbol `__fcntl_time64' is already defined
 Error: symbol `sendfile64' is already defined

On armhf (and potentially other 32 bits systems), glibc directs fcntl64
and fcntl to the same symbol name. preload.c defines both fcntl and fcntl64
and these 2 implementations are in fact tight to the same symbol, that causes
the double symbol error.

So only provide the definition of both fcntl and fcntl64 if they are 2
separate symbols.

This fixes the issue both for sendfile64 and fcntl64.

Fixes: 85f9747 ("librdmacm: Add support for fcntl64")
Signed-off-by: Hector Cao <hector.cao@canonical.com>
1 file changed
tree: 815da492f2b5a94883c174144a2707f10d555827
  1. buildlib/
  2. ccan/
  3. debian/
  4. Documentation/
  5. ibacm/
  6. infiniband-diags/
  7. iwpmd/
  8. kernel-boot/
  9. kernel-headers/
  10. libibmad/
  11. libibnetdisc/
  12. libibumad/
  13. libibverbs/
  14. librdmacm/
  15. providers/
  16. pyverbs/
  17. rdma-ndd/
  18. redhat/
  19. srp_daemon/
  20. suse/
  21. tests/
  22. util/
  23. .clang-format
  24. .gitignore
  25. .mailmap
  26. build.sh
  27. CMakeLists.txt
  28. COPYING.BSD_FB
  29. COPYING.BSD_MIT
  30. COPYING.GPL2
  31. COPYING.md
  32. MAINTAINERS
  33. rdma-sysusers.conf
  34. README.md
README.md

Build Status

RDMA Core Userspace Libraries and Daemons

This is the userspace components for the Linux Kernel's drivers/infiniband subsystem. Specifically this contains the userspace libraries for the following device nodes:

  • /dev/infiniband/uverbsX (libibverbs)
  • /dev/infiniband/rdma_cm (librdmacm)
  • /dev/infiniband/umadX (libibumad)

The userspace component of the libibverbs RDMA kernel drivers are included under the providers/ directory. Support for the following Kernel RDMA drivers is included:

  • bnxt_re.ko
  • efa.ko
  • erdma.ko
  • iw_cxgb4.ko
  • hfi1.ko
  • hns-roce-hw-v2.ko
  • ionic_rdma.ko
  • irdma.ko
  • ib_qib.ko
  • mana_ib.ko
  • mlx4_ib.ko
  • mlx5_ib.ko
  • ib_mthca.ko
  • ocrdma.ko
  • qedr.ko
  • rdma_rxe.ko
  • siw.ko
  • vmw_pvrdma.ko

Additional service daemons are provided for:

  • srp_daemon (ib_srp.ko)
  • iwpmd (for iwarp kernel providers)
  • ibacm (for InfiniBand communication management assistant)

Building

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.

Debian Derived

$ 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:

  • Debian 9 (stretch) or newer
  • Ubuntu 16.04 LTS (xenial) or newer

Fedora, CentOS 8

$ dnf builddep redhat/rdma-core.spec

NOTE: Fedora Core uses the name ‘ninja-build’ for the ‘ninja’ command.

openSUSE

$ zypper install cmake gcc libnl3-devel libudev-devel ninja pkg-config valgrind-devel python3-devel python3-Cython python3-docutils pandoc

Building on CentOS 7, Amazon Linux 2

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.

Usage

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.

Reporting bugs

Bugs should be reported to the linux-rdma@vger.kernel.org mailing list In your bug report, please include:

  • Information about your system:

    • Linux distribution and version
    • Linux kernel and version
    • InfiniBand hardware and firmware version
    • ... any other relevant information

  • 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.

Submitting patches

See Contributing to rdma-core.

Stable branches

Stable versions are released regularly with backported fixes (see Documentation/stable.md) The current minimum version still maintained is ‘v33.X’