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tests: restore rump_server_check_poolleaks for llentpl 

It didn't work correctly because rumphijack for vmstat didn't work expectedly;
vmstat has the sgid bit for kvm(3) and that prevents rumphijack from working.

Address the issue by cloning a vmstat binary without the sgid bit temporarily
and using it for rumphijack.  Note that it's a workaround.  vmstat should stop
using kvm(3) for /dev/kmem and drop the sgid bit eventually.
This commit is contained in:
ozaki-r 2019-08-26 04:50:03 +00:00
parent a0f3a067f2
commit 06b680af2f
1 changed files with 13 additions and 6 deletions
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19
tests/net/net_common.sh
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@ -1,4 +1,4 @@
# $NetBSD: net_common.sh,v 1.35 2019/08/20 09:53:45 ozaki-r Exp $
# $NetBSD: net_common.sh,v 1.36 2019/08/26 04:50:03 ozaki-r Exp $
#
# Copyright (c) 2016 Internet Initiative Japan Inc.
# All rights reserved.
@ -341,8 +341,13 @@ rump_server_check_poolleaks()
{
local target=$1
reqs=$($HIJACKING vmstat -mv | awk "/$target/ {print \$3;}")
rels=$($HIJACKING vmstat -mv | awk "/$target/ {print \$5;}")
# XXX rumphijack doesn't work with a binary with suid/sgid bits like
# vmstat. Use a copied one to drop sgid bit as a workaround until
# vmstat stops using kvm(3) for /dev/kmem and the sgid bit.
cp /usr/bin/vmstat ./vmstat
reqs=$($HIJACKING ./vmstat -mv | awk "/$target/ {print \$3;}")
rels=$($HIJACKING ./vmstat -mv | awk "/$target/ {print \$5;}")
rm -f ./vmstat
atf_check_equal '$target$reqs' '$target$rels'
}
@ -350,8 +355,7 @@ rump_server_check_poolleaks()
rump_server_check_memleaks()
{
# XXX this doesn't work in some cases for unknown reasons
#rump_server_check_poolleaks llentrypl
rump_server_check_poolleaks llentrypl
# This doesn't work for objects allocated through pool_cache
#rump_server_check_poolleaks mbpl
#rump_server_check_poolleaks mclpl
@ -437,7 +441,10 @@ dump_kernel_stats()
rump.netstat -nr
# XXX still need hijacking
$HIJACKING rump.netstat -nai
$HIJACKING vmstat -m
# XXX workaround for vmstat with the sgid bit
cp /usr/bin/vmstat ./vmstat
$HIJACKING ./vmstat -m
rm -f ./vmstat
rump.arp -na
rump.ndp -na
$HIJACKING ifmcstat