Description of problem:

After "ucx_perftest" tests, RDMA client was left with SIG 6 core file. This happened the UCX was tested on MLX5 IB devices.

TIME PID UID GID SIG COREFILE EXE

Sat 2023-05-27 14:05:06 EDT 331688 0 0 6 none /usr/bin/ucx_perftest
Sat 2023-05-27 14:08:42 EDT 331781 0 0 6 none /usr/bin/ucx_perftest
Sat 2023-05-27 14:11:08 EDT 331866 0 0 6 none /usr/bin/ucx_perftest
Sat 2023-05-27 14:14:44 EDT 331960 0 0 6 none /usr/bin/ucx_perftest
Sat 2023-05-27 14:17:10 EDT 332047 0 0 6 none /usr/bin/ucx_perftest

Version-Release number of selected component (if applicable):

Clients: rdma-perf-03
Servers: rdma-perf-02

DISTRO=RHEL-8.9.0-20230521.41

+ [23-05-27 14:03:46] cat /etc/redhat-release
Red Hat Enterprise Linux release 8.9 Beta (Ootpa)

+ [23-05-27 14:03:46] uname -a
Linux rdma-perf-03.rdma.lab.eng.rdu2.redhat.com 4.18.0-492.el8.x86_64 #1 SMP Tue May 9 14:50:21 EDT 2023 x86_64 x86_64 x86_64 GNU/Linux

+ [23-05-27 14:03:46] cat /proc/cmdline
BOOT_IMAGE=(hd0,msdos1)/vmlinuz-4.18.0-492.el8.x86_64 root=UUID=ba31a4b2-48e9-406e-82c0-86137253e7c5 ro intel_idle.max_cstate=0 processor.max_cstate=0 intel_iommu=on iommu=on console=tty0 rd_NO_PLYMOUTH intel_idle.max_cstate=0 intremap=no_x2apic_optout processor.max_cstate=0 reboot=acpi crashkernel=auto resume=UUID=6342dea0-23ae-4c1d-8132-4d6e2037fa0e console=ttyS1,115200n81

+ [23-05-27 14:03:46] rpm -q rdma-core linux-firmware
rdma-core-44.0-2.el8.1.x86_64
linux-firmware-20230515-115.gitd1962891.el8.noarch

+ [23-05-27 14:03:46] tail /sys/class/infiniband/mlx5_0/fw_ver /sys/class/infiniband/mlx5_1/fw_ver
==> /sys/class/infiniband/mlx5_0/fw_ver <==
16.33.1048

==> /sys/class/infiniband/mlx5_1/fw_ver <==
16.33.1048

+ [23-05-27 14:03:46] lspci
+ [23-05-27 14:03:46] grep -i -e ethernet -e infiniband -e omni -e ConnectX
03:00.0 Ethernet controller: Broadcom Inc. and subsidiaries NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
03:00.1 Ethernet controller: Broadcom Inc. and subsidiaries NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
03:00.2 Ethernet controller: Broadcom Inc. and subsidiaries NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
03:00.3 Ethernet controller: Broadcom Inc. and subsidiaries NetXtreme BCM5719 Gigabit Ethernet PCIe (rev 01)
07:00.0 Infiniband controller: Mellanox Technologies MT27800 Family [ConnectX-5]
07:00.1 Ethernet controller: Mellanox Technologies MT27800 Family [ConnectX-5]

How reproducible:
100%

Steps to Reproduce:

Please, refer to the following beaker test logs:

https://beaker.engineering.redhat.com/jobs/7908288

https://beaker-archive.hosts.prod.psi.bos.redhat.com/beaker-logs/2023/05/79082/7908288/13996201/161005246/752813761/resultoutputfile.log

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Actual results:

Expected results:

No core files produced after UCX tests

Additional info: