#! /bin/sh set -e PREFIX=$1 shift trap 'rm -r $TMPDIR' 0 TMPDIR=`mktemp -d` exec 3>/dev/null for f; do while IFS=" " read -r LINE; do case "$LINE" in *$PREFIX:[0-9]*:\**) NUM=`echo "$LINE" | sed "s/.*$PREFIX:\([0-9]*\).*/\1/"` if [ -f $TMPDIR/$NUM ]; then echo "$TMPDIR/$NUM already exits prior to $f" exit 1 fi exec 3>>$TMPDIR/$NUM echo $f | sed 's,\.\./,,g' > $TMPDIR/.$NUM /bin/echo "$LINE" | sed -e "s/$PREFIX:[0-9]*//" -e "s/:\*/*/" >&3 ;; *$PREFIX:[0-9]*) NUM=`echo "$LINE" | sed "s/.*$PREFIX:\([0-9]*\).*/\1/"` if [ -f $TMPDIR/$NUM ]; then echo "$TMPDIR/$NUM already exits prior to $f" exit 1 fi exec 3>>$TMPDIR/$NUM echo $f | sed 's,\.\./,,g' > $TMPDIR/.$NUM /bin/echo "$LINE" | sed "s/$PREFIX:[0-9]*//" >&3 ;; *:\**) /bin/echo "$LINE" | sed -e "s/:\*/*/" -e "s,/\*\*/,," >&3 echo >&3 exec 3>/dev/null ;; *) /bin/echo "$LINE" >&3 ;; esac done < $f echo >&3 exec 3>/dev/null done LASTFILE="" for f in $TMPDIR/*; do if [ "$LASTFILE" != $(cat $TMPDIR/.$(basename $f) ) ]; then LASTFILE=$(cat $TMPDIR/.$(basename $f) ) echo "[ $LASTFILE ]" fi cat $f done ter net-next plumbingsTobias Klauser
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authorTejun Heo <tj@kernel.org>2017-01-26 16:47:28 -0500
committerTejun Heo <tj@kernel.org>2017-01-26 16:47:28 -0500
commit07cd12945551b63ecb1a349d50a6d69d1d6feb4a (patch)
tree75f65eba7eac9277971082a2d5a4cf1370562c0c /net/6lowpan/nhc_mobility.c
parent7ce7d89f48834cefece7804d38fc5d85382edf77 (diff)
cgroup: don't online subsystems before cgroup_name/path() are operational
While refactoring cgroup creation, a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()") incorrectly onlined subsystems before the new cgroup is associated with it kernfs_node. This is fine for cgroup proper but cgroup_name/path() depend on the associated kernfs_node and if a subsystem makes the new cgroup_subsys_state visible, which they're allowed to after onlining, it can lead to NULL dereference. The current code performs cgroup creation and subsystem onlining in cgroup_create() and cgroup_mkdir() makes the cgroup and subsystems visible afterwards. There's no reason to online the subsystems early and we can simply drop cgroup_apply_control_enable() call from cgroup_create() so that the subsystems are onlined and made visible at the same time. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Fixes: a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()") Cc: stable@vger.kernel.org # v4.6+
Diffstat (limited to 'net/6lowpan/nhc_mobility.c')