Commit 10cec0de authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

torture: Make --kcsan argument also create a summary 



The KCSAN tool emits a great many warnings for current kernels, for
example, a one-hour run of the full set of rcutorture scenarios results
in no fewer than 3252 such warnings, many of which are duplicates
or are otherwise closely related.  This commit therefore introduces
a kcsan-collapse.sh script that maps these warnings down to a set of
function pairs (22 of them given the 3252 individual warnings), placing
the resulting list in decreasing order of frequency of occurrence into
a kcsan.sum file.  If any KCSAN warnings were produced, the pathname of
this file is emitted at the end of the summary of the rcutorture runs.

Signed-off-by: default avatarPaul E. McKenney <paulmck@kernel.org>
parent 7226c5cb

tools/testing/selftests/rcutorture/bin/kcsan-collapse.sh

0 → 100755
+22 −0
Original line number Diff line number Diff line 
#!/bin/bash

# SPDX-License-Identifier: GPL-2.0+

#

# If this was a KCSAN run, collapse the reports in the various console.log

# files onto pairs of functions.

#

# Usage: kcsan-collapse.sh resultsdir

#

# Copyright (C) 2020 Facebook, Inc.

#

# Authors: Paul E. McKenney <paulmck@kernel.org>



if test -z "$TORTURE_KCONFIG_KCSAN_ARG"

then

	exit 0

fi

cat $1/*/console.log |

	grep "BUG: KCSAN: " |

	sed -e 's/^\[[^]]*] //' |

	sort |

	uniq -c |

	sort -k1nr > $1/kcsan.sum

tools/testing/selftests/rcutorture/bin/kvm-recheck.sh

+9 −0
Original line number Diff line number Diff line
@@ -70,6 +70,15 @@ do 
			fi

		fi

	done

	if test -f "$rd/kcsan.sum"

	then

		if test -s "$rd/kcsan.sum"

		then

			echo KCSAN summary in $rd/kcsan.sum

		else

			echo Clean KCSAN run in $rd

		fi

	fi

done

EDITOR=echo kvm-find-errors.sh "${@: -1}" > $T 2>&1

ret=$?

tools/testing/selftests/rcutorture/bin/kvm.sh

+1 −0
Original line number Diff line number Diff line
@@ -472,6 +472,7 @@ echo 
echo

echo " --- `date` Test summary:"

echo Results directory: $resdir/$ds

kcsan-collapse.sh $resdir/$ds

kvm-recheck.sh $resdir/$ds

___EOF___