linux/tools/testing/selftests/rcutorture/bin/console-badness.sh
Paul E. McKenney 546eee2d93 torture: Remove "Failed to add ttynull console" false positive
Commit 757055ae8d ("init/console: Use ttynull as a fallback when
there is no console") results in the string "Warning: Failed to add
ttynull console. No stdin, stdout, and stderr for the init process!"
appearing on the console, which the rcutorture scripting interprets as
a warning, which causes every rcutorture run to be flagged.  However,
the rcutorture init process never attempts to do any I/O, and thus does
not care that it has no stdin, stdout, or stderr.

This commit therefore causes the rcutorture scripting to ignore this
message.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2021-01-04 14:01:25 -08:00

19 lines
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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0+
#
# Scan standard input for error messages, dumping any found to standard
# output.
#
# Usage: console-badness.sh
#
# Copyright (C) 2020 Facebook, Inc.
#
# Authors: Paul E. McKenney <paulmck@kernel.org>
egrep 'Badness|WARNING:|Warn|BUG|===========|Call Trace:|Oops:|detected stalls on CPUs/tasks:|self-detected stall on CPU|Stall ended before state dump start|\?\?\? Writer stall state|rcu_.*kthread starved for|!!!' |
grep -v 'ODEBUG: ' |
grep -v 'This means that this is a DEBUG kernel and it is' |
grep -v 'Warning: unable to open an initial console' |
grep -v 'Warning: Failed to add ttynull console. No stdin, stdout, and stderr.*the init process!' |
grep -v 'NOHZ tick-stop error: Non-RCU local softirq work is pending, handler'