The following commit has been merged into the core/rcu branch of tip:
Commit-ID: 546eee2d931b3d76357a9c813778203001375fe1
Gitweb: https://git.kernel.org/tip/546eee2d931b3d76357a9c813778203001375fe1
Author: Paul E. McKenney <paulmck@xxxxxxxxxx>
AuthorDate: Wed, 23 Dec 2020 10:35:39 -08:00
Committer: Paul E. McKenney <paulmck@xxxxxxxxxx>
CommitterDate: Mon, 04 Jan 2021 14:01:25 -08:00
torture: Remove "Failed to add ttynull console" false positive
Commit 757055ae8ded ("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@xxxxxxxxxx>
---
tools/testing/selftests/rcutorture/bin/console-badness.sh | 1 +
tools/testing/selftests/rcutorture/bin/parse-console.sh | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/rcutorture/bin/console-badness.sh b/tools/testing/selftests/rcutorture/bin/console-badness.sh
index 80ae7f0..e6a132d 100755
--- a/tools/testing/selftests/rcutorture/bin/console-badness.sh
+++ b/tools/testing/selftests/rcutorture/bin/console-badness.sh
@@ -14,4 +14,5 @@ egrep 'Badness|WARNING:|Warn|BUG|===========|Call Trace:|Oops:|detected stalls o
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'
diff --git a/tools/testing/selftests/rcutorture/bin/parse-console.sh b/tools/testing/selftests/rcutorture/bin/parse-console.sh
index 263b1be..9f624bd 100755
--- a/tools/testing/selftests/rcutorture/bin/parse-console.sh
+++ b/tools/testing/selftests/rcutorture/bin/parse-console.sh
@@ -128,7 +128,7 @@ then
then
summary="$summary Badness: $n_badness"
fi
- n_warn=`grep -v 'Warning: unable to open an initial console' $file | egrep -c 'WARNING:|Warn'`
+ n_warn=`grep -v 'Warning: unable to open an initial console' $file | grep -v 'Warning: Failed to add ttynull console. No stdin, stdout, and stderr for the init process' | egrep -c 'WARNING:|Warn'`
if test "$n_warn" -ne 0
then
summary="$summary Warnings: $n_warn"
|