Package: zsh
Version: 5.0.8-3
Severity: normal
Hi,
zsh 5.0.8 segfaults on the
while [[ -n "$1" ]]; do
line in the attached script; zsh 5.0.7 (and before) was fine.
gdb backtrace:
#0 __strlen_sse2_bsf () at ../sysdeps/i386/i686/multiarch/strlen-sse2-bsf.S:50
#1 0x080bc801 in taddstr (s=0x1f09d4a3 <error: Cannot access memory at address
0x1f09d4a3>) at ../../Src/text.c:115
#2 0x080bc952 in taddlist (state=state@entry=0xffffcbf0, num=30, num@entry=57)
at ../../Src/text.c:141
#3 0x080bdc58 in taddlist (num=57, state=0xffffcbf0) at ../../Src/text.c:637
#4 gettext2 (state=state@entry=0xffffcbf0) at ../../Src/text.c:472
#5 0x080bdfdf in getjobtext (prog=0xf7fd6b98, c=0xf7fd6cb8) at
../../Src/text.c:230
#6 0x0806bdcd in execpline2 (state=state@entry=0xffffce70,
pcode=pcode@entry=1411, how=how@entry=18, input=0, output=0, last1=0) at
../../Src/exec.c:1710
#7 0x0806c0f6 in execpline (state=state@entry=0xffffce70, slcode=<optimized
out>, how=how@entry=18, last1=0) at ../../Src/exec.c:1500
#8 0x0806d23d in execlist (state=0xffffce70, dont_change_job=0, exiting=0) at
../../Src/exec.c:1276
#9 0x0806d4d4 in execode (p=0xf7fd6b98, dont_change_job=0, exiting=0,
context=0x80cca55 "toplevel") at ../../Src/exec.c:1074
#10 0x0807ee41 in loop (toplevel=1, justonce=0) at ../../Src/init.c:207
#11 0x08081dbe in zsh_main (argc=2, argv=0xffffd024) at ../../Src/init.c:1674
#12 0x0805497b in main (argc=2, argv=0xffffd024) at ../../Src/main.c:93
Andras
Versions of packages zsh depends on:
ii dpkg 1.18.0
ii libc6 2.19-18
ii libcap2 1:2.24-8
ii libtinfo5 5.9+20150516-1
ii zsh-common 5.0.7-6
Versions of packages zsh recommends:
ii libncursesw5 5.9+20150516-1
ii libpcre3 2:8.35-3.3
Versions of packages zsh suggests:
pn zsh-doc <none>
-- no debconf information
#!/bin/zsh
#
# This script is intended to wrap start-stop-daemon. It will call the
# original start-stop-daemon with the supplied arguments unless the daemon
# to be started appears to exist as a runit service, in which case it will
# map the start-stop-daemon call to an sv(8) call.
#
# If called by non-root user, fall back to original start-stop-daemon
# unconditionally
[[ $UID -gt 0 ]] && exec /sbin/start-stop-daemon.real $@
set -A args $@
SVDIR=${SVDIR:-/etc/service}
unset mode signal exec timeout startas testmode oknodo quiet verbose command
svstat
oknodo=0
quiet=0
while [[ -n "$1" ]]; do
case "$1" in
-S|--start)
mode=start
;;
-K|--stop)
mode=stop
;;
-T|--status)
mode=status
;;
-H|--help|-V|--version)
exec /sbin/start-stop-daemon.real $args
;;
-x|--exec)
shift
exec="$1"
;;
-s|--signal)
shift
signal=$1
;;
--signal=*)
signal="${1/--signal=/}"
;;
-R|--retry)
shift
timeout="$1"
;;
--retry=*)
timeout="${1/--retry=/}"
;;
-a|--startas)
shift
startas="$1"
;;
-t|--test)
testmode=1
;;
-o|--oknodo)
oknodo=1
;;
-q|--quiet)
quiet=1
exec >/dev/null
;;
-v|--verbose)
verbose=1
;;
-p|--pidfile|-n|--name|-u|--user|-g|--group|-r|--chroot|-d|--chdir|-N|--nicelevel|-P|--procsched|-I|--iosched|-k|--umask|-m|--make-pidfile)
# ignored
shift
;;
--pidfile=*|-b|--background|--nicelevel=*|--procsched=*|--iosched=*|--umask=*)
;;
--)
# What follows is args to the daemon. Avoid parsing
# those accidentally.
break
;;
*)
# Assume the previous was the last option; the rest
# is the name of the daemon plus args, of which we
# only care about the daemon.
command=$1
break
;;
esac
shift
done
# returns success if $1 appears to be the name of a runit service
function issvname() {
if [[ -d "$SVDIR/$1/supervise/." ]]; then
return 0
# 'supervise' could still be a symlink to a directory that doesn't
exist yet
elif [[ -L $SVDIR/$1/supervise ]] && ! [[ -e $SVDIR/$1/supervise ]];
then
return 0
else
return 1
fi
}
# TODO: decide what to do if the runit service we're supposed to manage
# doesn't exist in the current svdir but does in other "runlevels"
# Try to infer runit service name. If our parent is an initscript, use its
# basename
foundsvname=0
read -A cmdline </proc/$PPID/cmdline
while [[ -n "$cmdline[1]" ]]; do
if [[ "${cmdline[1]:h}" = /etc/init.d ]]; then
svname=${cmdline[1]:t}
break
fi
shift cmdline
done
if [[ -z "$svname" ]] && [[ "${$(readlink -f /proc/$PPID/exe):h}" = /etc/init.d
]]; then
read svname < /proc/$PPID/comm
fi
issvname $svname && foundsvname=1
# if not, try other heuristics
if [[ $foundsvname = 0 ]]; then
svnames=($startas $exec $command)
while [[ -n "$svnames[1]" ]]; do
if issvname ${svnames[1]:t}; then
svname=${svnames[1]:t}
foundsvname=1
break
else
shift svnames
fi
done
fi
# if still not found, call real start-stop-daemon
if [[ "$foundsvname" = 0 ]]; then
exec /sbin/start-stop-daemon.real $args
fi
# otherwise, do what we've been asked to
[[ "$quiet" = "0" ]] && [[ "$verbose" = "1" ]] && echo
"start-stop-daemon.runit: will act on $svname service." >&2
function sendsig() {
case "$signal" in
HUP|1)
sv hup $svname
;;
INT|2)
sv interrupt $svname
;;
QUIT|3)
sv quit $svname
;;
KILL|9)
sv d $svname
sv kill $svname
;;
USR1|10)
sv 1 $svname
;;
USR2|12)
sv 2 $svname
;;
ALRM|14)
sv alarm $svname
;;
TERM|15)
sv down $svname
;;
CONT|18)
sv cont $svname
;;
STOP|19)
sv pause $svname
;;
*)
echo "$0: ERROR: don't know how to send $signal signal
to $svname." >&2
exit 3
;;
esac
}
function wait_until_exited() {
counter=0
read svstat < $SVDIR/$svname/supervise/stat
while ! [[ "$svstat" = down ]]; do
((counter++))
[[ $counter -gt $timeout ]] && return 1
sleep 1
read svstat < $SVDIR/$svname/supervise/stat
done
return 0
}
function do_stop() {
if [[ $timeout =~ / ]]; then
# handle complex schedule
OLDIFS="$IFS"
IFS=/
echo $timeout | read -A schedule
IFS="$OLDIFS"
while [[ -n "$schedule[1]" ]]; do
signal=$schedule[1]
sendsig
shift schedule
timeout=$schedule[1]
wait_until_exited && exit 0
shift schedule
done
exit 2
else
# simple timeout
if [[ -z "$signal" ]]; then
if [[ $timeout =~ ^[0-9]+$ ]]; then
export SVWAIT=$timeout
fi
if sv stop $svname; then
exit 0
else
exit 1
fi
else
sendsig
[[ -n "$timeout" ]] && if wait_until_exited; then
exit 0
else
exit 1
fi
fi
fi
}
if [[ -r $SVDIR/$svname/supervise/stat ]]; then
read svstat < $SVDIR/$svname/supervise/stat
else
# runsv is not yet up
svstat=none
fi
case "$mode" in
start)
[[ "$svstat" = run ]] && [[ "$oknodo" = "0" ]] && exit 1 #
Emulate start-stop-daemon semantics
[[ -z "$testmode" ]] && ! [[ "$svstat" = "none" ]] && sv start
$svname
exit 0
;;
stop)
[[ "$svstat" = none ]] && exit 0
[[ "$svstat" = down ]] && [[ "$oknodo" = "1" ]] && exit 1 #
Emulate start-stop-daemon semantics
[[ -z "$testmode" ]] && do_stop # handles --retry and --signal,
therefore separate function
;;
status)
case "$svstat" in
# States are complex; we only handle the most basic cases here and bail on
# the rest (e.g. "finish" cannot be correctly reported as "running" or "not
# running")
run)
exit 0
;;
down|none)
exit 3
;;
*)
exit 4
;;
esac
;;
esac
exit 0
