CI: Increase default RCU stall timeout on Linux

When CONFIG_RCU_CPU_STALL_TIMEOUT is configured an RCU stall which
exceeds the default timeout will trigger an NMI and panic the VM.
Given the heavily virtualized nature of the CI environment we want
to make sure to only trigger this due to a real deadlock and not
due to over-subscription of the systems resources.  This timeout
normally defaults to 20-30 seconds and this change increases it
to 120 seconds.

Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #18624

This commit is contained in:

Brian Behlendorf

2026-06-04 17:41:11 -07:00

committed by

GitHub

parent cae1421e8d

commit c4d0f3dd41

1 changed files with 7 additions and 0 deletions

									
										.github/workflows/scripts/qemu-6-tests.sh
									
		+7
		
												View File
												
				@@ -186,6 +186,13 @@ case "$OS" in

				    sudo mount -o noatime /dev/vdb /var/tmp

				    sudo chmod 1777 /var/tmp

				    sudo mv -f /tmp/*.txt /var/tmp

				    # Allow for longer RCU timeouts due to the heavily virtualized and

				    # potentially oversubscribed nature of the CI environment.

				    rcu_cpu_stall_timeout="/sys/module/rcupdate/parameters/rcu_cpu_stall_timeout"

				    if test -f $rcu_cpu_stall_timeout; then

				        echo 120 | sudo sh -c "cat > '$rcu_cpu_stall_timeout'"

				    fi

				    ;;

				esac