From: Eric Biggers <ebiggers@xxxxxxxxxx>
Add a regression test for the bug fixed by commit 10a98cb16d80 ("xfs:
clear PF_MEMALLOC before exiting xfsaild thread").
Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
---
RFC for now since the commit is in xfs/for-next only, and I'm not sure
the commit ID is stable.
common/config | 1 +
common/rc | 11 ++++++++
tests/generic/901 | 60 +++++++++++++++++++++++++++++++++++++++++++
tests/generic/901.out | 2 ++
tests/generic/group | 1 +
5 files changed, 75 insertions(+)
create mode 100644 tests/generic/901
create mode 100644 tests/generic/901.out
diff --git a/common/config b/common/config
index 1116cb995..8023273da 100644
--- a/common/config
+++ b/common/config
@@ -220,6 +220,7 @@ export DUPEREMOVE_PROG="$(type -P duperemove)"
export CC_PROG="$(type -P cc)"
export FSVERITY_PROG="$(type -P fsverity)"
export OPENSSL_PROG="$(type -P openssl)"
+export ACCTON_PROG="$(type -P accton)"
# use 'udevadm settle' or 'udevsettle' to wait for lv to be settled.
# newer systems have udevadm command but older systems like RHEL5 don't.
diff --git a/common/rc b/common/rc
index 454f5ccf5..0bc4b14f2 100644
--- a/common/rc
+++ b/common/rc
@@ -4168,6 +4168,17 @@ _check_xfs_scrub_does_unicode() {
return 0
}
+# Require the 'accton' userspace tool and CONFIG_BSD_PROCESS_ACCT=y.
+_require_bsd_process_accounting()
+{
+ _require_command "$ACCTON_PROG" accton
+ $ACCTON_PROG on &> $tmp.test_accton
+ cat $tmp.test_accton >> $seqres.full
+ if grep 'Function not implemented' $tmp.test_accton; then
+ _notrun "BSD process accounting support unavailable"
+ fi
+}
+
init_rc
################################################################################
diff --git a/tests/generic/901 b/tests/generic/901
new file mode 100644
index 000000000..c59300f1b
--- /dev/null
+++ b/tests/generic/901
@@ -0,0 +1,60 @@
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright 2020 Google LLC
+#
+# FS QA Test No. 901
+#
+# Regression test for the bug fixed by commit 10a98cb16d80 ("xfs: clear
+# PF_MEMALLOC before exiting xfsaild thread"). If the bug exists, a kernel
+# WARNING should be triggered. See the commit message for details.
+#
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1 # failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+ $ACCTON_PROG off >> $seqres.full
+ rm -f $tmp.*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+# real QA test starts here
+_supported_fs generic
+_supported_os Linux
+_require_bsd_process_accounting
+_require_chattr S
+_require_test
+_require_scratch
+
+# To trigger the bug we must unmount a filesystem while BSD process accounting
+# is enabled. The accounting file must also be located on a different
+# filesystem and have the sync flag set.
+
+accounting_file=$TEST_DIR/$seq
+
+rm -f $accounting_file
+touch $accounting_file
+$CHATTR_PROG +S $accounting_file
+
+_scratch_mkfs &>> $seqres.full
+$ACCTON_PROG $accounting_file >> $seqres.full
+_scratch_mount
+_scratch_unmount
+$ACCTON_PROG off >> $seqres.full
+
+echo "Silence is golden"
+
+status=0
+exit
diff --git a/tests/generic/901.out b/tests/generic/901.out
new file mode 100644
index 000000000..b206bc11d
--- /dev/null
+++ b/tests/generic/901.out
@@ -0,0 +1,2 @@
+QA output created by 901
+Silence is golden
diff --git a/tests/generic/group b/tests/generic/group
index dc95b77b3..61a679793 100644
--- a/tests/generic/group
+++ b/tests/generic/group
@@ -595,3 +595,4 @@
591 auto quick rw pipe splice
592 auto quick encrypt
593 auto quick encrypt
+901 auto quick
--
2.25.1
