kernel/tools/verification/rv/src/rv.c, branch linux-rolling-stable

tools/rv: Stop gracefully also on SIGTERM

2025-07-24T14:43:46Z

Currently the userspace RV tool starts a monitor and waits for the user to press Ctrl-C (SIGINT) to terminate and stop the monitor. This doesn't account for a scenario where a user starts RV in background and simply kills it (SIGTERM unless the user specifies differently). E.g.: # rv mon wip & # kill % Would terminate RV without stopping the monitor and next RV executions won't start correctly. Register the signal handler used for SIGINT also to SIGTERM. Cc: Nam Cao Cc: Tomas Glozar Cc: Juri Lelli Cc: Clark Williams Cc: John Kacur Link: https://lore.kernel.org/20250723161240.194860-3-gmonaco@redhat.com Signed-off-by: Gabriele Monaco Signed-off-by: Steven Rostedt (Google)

tools/rv: Allow rv list to filter for container

2025-03-24T21:27:40Z

Add possibility to supply the container name to rv list: # rv list sched mon1 mon2 mon3 This lists only monitors in sched, without indentation. Supplying -h, any option (string starting with -) or more than 1 argument will still print the usage. Passing a non-existent container prints nothing and passing no container continues to print all monitors, showing indentation for nested monitors, reported after their container. Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Juri Lelli Link: https://lore.kernel.org/20250305140406.350227-10-gmonaco@redhat.com Signed-off-by: Gabriele Monaco Signed-off-by: Steven Rostedt (Google)

rv: Fix addition on an uninitialized variable 'run'

2023-04-25T21:02:13Z

The variable run is not initialized however it is being accumulated by the return value from the call to ikm_run_monitor. Fix this by initializing run to zero at the start of the function. Link: https://lkml.kernel.org/r/20230424094730.105313-1-colin.i.king@gmail.com Fixes: 4bc4b131d44c ("rv: Add rv tool") Signed-off-by: Colin Ian King Acked-by: Daniel Bristot de Oliveira Signed-off-by: Steven Rostedt (Google)

tools/rv: Add in-kernel monitor interface

2022-12-09T23:06:24Z

Add the ability to control and trace in-kernel monitors. This is a generic interface, it will check for existing monitors and enable standard setup, like enabling reactors. For example: # rv list wip wakeup in preemptive per-cpu testing monitor. [OFF] wwnr wakeup while not running per-task testing model. [OFF] # rv mon wwnr --help rv version 6.1.0-rc4: help usage: rv mon wwnr [-h] [-q] [-r reactor] [-s] [-v] -h/--help: print this menu and the reactor list -r/--reactor 'reactor': enables the 'reactor' -s/--self: when tracing (-t), also trace rv command -t/--trace: trace monitor's event -v/--verbose: print debug messages available reactors: nop printk panic # rv mon wwnr --trace -PID [CPU] TYPE ID STATE x EVENT -> NEXT_STATE FINAL | | | | | | | | | rv-3613 [001] event 3613 running x switch_out -> not_running Y sshd-1248 [005] event 1248 running x switch_out -> not_running Y -0 [005] event 71 not_running x wakeup -> not_running Y -0 [005] event 71 not_running x switch_in -> running N kcompactd0-71 [005] event 71 running x switch_out -> not_running Y -0 [000] event 860 not_running x wakeup -> not_running Y -0 [000] event 860 not_running x switch_in -> running N systemd-oomd-860 [000] event 860 running x switch_out -> not_running Y -0 [000] event 860 not_running x wakeup -> not_running Y -0 [000] event 860 not_running x switch_in -> running N systemd-oomd-860 [000] event 860 running x switch_out -> not_running Y -0 [005] event 71 not_running x wakeup -> not_running Y -0 [005] event 71 not_running x switch_in -> running N kcompactd0-71 [005] event 71 running x switch_out -> not_running Y -0 [000] event 860 not_running x wakeup -> not_running Y -0 [000] event 860 not_running x switch_in -> running N systemd-oomd-860 [000] event 860 running x switch_out -> not_running Y -0 [001] event 3613 not_running x wakeup -> not_running Y Link: https://lkml.kernel.org/r/1e57547e3acadda6e23949b2672c89e76ec2ec42.1668180100.git.bristot@kernel.org Cc: Jonathan Corbet Signed-off-by: Daniel Bristot de Oliveira Signed-off-by: Steven Rostedt (Google)

rv: Add rv tool

2022-12-09T23:06:24Z

This is the (user-space) runtime verification tool, named rv. This tool aims to be the interface for in-kernel rv monitors, as well as the home for monitors in user-space (online asynchronous), and in *eBPF. The tool receives a command as the first argument, the current commands are: list - list all available monitors mon - run a given monitor Each monitor is an independent piece of software inside the tool and can have their own arguments. There is no monitor implemented in this patch, it only adds the basic structure of the tool, based on rtla. # rv --help rv version 6.1.0-rc4: help usage: rv command [-h] [command_options] -h/--help: print this menu command: run one of the following command: list: list all available monitors mon: run a monitor [command options]: each command has its own set of options run rv command -h for further information *dot2bpf is the next patch set, depends on this, doing cleanups. Link: https://lkml.kernel.org/r/fb51184f3b95aea0d7bfdc33ec09f4153aee84fa.1668180100.git.bristot@kernel.org Cc: Jonathan Corbet Signed-off-by: Daniel Bristot de Oliveira Signed-off-by: Steven Rostedt (Google)