Control: fixed 920235 apache2/2.4.23-4
Control: found 920235 apache2/2.4.23-5
Control: found 920235 apache2/2.4.37-1
Dear Maintainer,
I tried to find out when this started inside an amd64 qemu VM
and got to these versions:
Stretch/testing of date 2016-10-10 with apache2/2.4.23-4 was ok.
Stretch/testing of date 2016-10-11 with apache2/2.4.23-5 started to fail.
The changelog between those versions mentions
some movement towards systemd.
This is also reproducible in buster/testing of today.
When attaching a debugger to the fold process it repeatedly
receives a signal SIGPIPE, Broken pipe.
Kind regards,
Bernhard
htop:
PID USER PRI NI VIRT RES SHR S CPU% MEM% TIME+ Command
1 root 20 0 176M 9044 6840 S 0.0 0.3 0:01.56 /sbin/init
1765 root 20 0 8500 4416 3188 S 0.0 0.1 0:00.00 ├─
/usr/sbin/apache2 -k start
1768 www-data 20 0 1952M 12096 2372 S 0.0 0.4 0:00.00 │ ├─
/usr/sbin/apache2 -k start
1767 www-data 20 0 1952M 12096 2372 S 0.0 0.4 0:00.00 │ ├─
/usr/sbin/apache2 -k start
1766 www-data 20 0 8160 2704 1488 S 0.0 0.1 0:00.00 │ └─
/usr/sbin/apache2 -k start
1836 www-data 20 0 3736 2764 2536 S 0.0 0.1 0:00.00 │ └─
/bin/bash /usr/lib/cgi-bin/test
1838 www-data 20 0 2296 688 624 S 13.9 0.0 0:45.68 │├─ fold
-w 8
1837 www-data 20 0 2320 744 680 R 85.5 0.0 4:04.58 │└─ tr
-dc a-z0-9
root@debian:~# gdb -q --pid $(pidof fold)
Attaching to process 1838
...
(gdb) cont
...
Program received signal SIGPIPE, Broken pipe.
0x7fa3213c37d4 in __GI___libc_write (fd=1, buf=0x564061192350, nbytes=4096)
at ../sysdeps/unix/sysv/linux/write.c:26
26 ../sysdeps/unix/sysv/linux/write.c: Datei oder Verzeichnis nicht
gefunden.
(gdb) bt
#0 0x7fa3213c37d4 in __GI___libc_write (fd=1, buf=0x564061192350,
nbytes=4096) at ../sysdeps/unix/sysv/linux/write.c:26
#1 0x7fa32135461d in _IO_new_file_write (f=0x7fa321495760
<_IO_2_1_stdout_>, data=0x564061192350, n=4096) at fileops.c:1183
#2 0x7fa3213539bf in new_do_write (fp=0x7fa321495760 <_IO_2_1_stdout_>,
data=0x564061192350
"n1yicbga\nbxya0ywh\ng20pc1ex\nfwbcji3y\nedbj1oxe\nrxjygw5p\nkq7ko8zl\npik7zbo2\nyxn4gzl9\niribr6wa\nfj91a3uu\nmiivy57y\n0zyffwwi\nyjh5rajm\ntytfc4mq\nkjoowq7i\n9cxibhud\n92u1qz8s\nlhhx5f9k\n7yctusal\nqvtata20\n7n51isnp\neg"...,
to_do=to_do@entry=4096) at libioP.h:839
#3 0x7fa321355769 in _IO_new_do_write (to_do=4096, data=,
fp=) at fileops.c:430
#4 _IO_new_do_write (fp=, data=, to_do=4096) at
fileops.c:430
#5 0x7fa321354cef in _IO_new_file_xsputn (n=9, data=,
f=0x7fa321495760 <_IO_2_1_stdout_>) at libioP.h:839
#6 _IO_new_file_xsputn (f=0x7fa321495760 <_IO_2_1_stdout_>, data=, n=9) at fileops.c:1204
#7 0x7fa3213535a0 in __GI_fwrite_unlocked (buf=, size=1,
count=9, fp=) at libioP.h:839
#8 0x56405fbee87b in fold_file (filename=, width=8) at
src/fold.c:210
#9 0x56405fbee5bb in main (argc=3, argv=0x7ffd2bc533d8) at src/fold.c:297
(gdb) cont
# Stretch amd64 qemu VM 2019-01-24
#apt update
apt-get -o Acquire::Check-Valid-Until=false -o Acquire::Languages=none update
apt dist-upgrade
# /etc/apt/sources.list, enable backports
#apt update
apt-get -o Acquire::Check-Valid-Until=false -o Acquire::Languages=none update
# apt install linux-image-amd64=4.19+101~bpo9+1
apt install htop psmisc gdb apache2
a2enmod cgi
systemctl restart apache2
cat < /usr/lib/cgi-bin/test
#!/bin/bash
echo "Content-Type: text/plain"
echo ""
tr -dc 'a-z0-9' http://localhost/cgi-bin/test
Linux debian 4.9.0-8-amd64 #1 SMP Debian 4.9.130-2 (2018-10-27) x86_64
benutzer@debian:~$ wget http://localhost/cgi-bin/test
--2019-01-24 20:06:55-- http://localhost/cgi-bin/test
Auflösen des Hostnamens »localhost (localhost)« … ::1, 127.0.0.1
Verbindungsaufbau zu localhost (localhost)|::1|:80 … verbunden.
HTTP-Anforderung gesendet, auf Antwort wird gewartet … Keine Daten empfangen.
Erneuter Versuch.
--2019-01-24 20:11:56-- (Versuch: 2) http://localhost/cgi-bin/test
Verbindungsaufbau zu localhost (localhost)|::1|:80 … verbunden.
HTTP-Anforderung gesendet, auf Antwort wird gewartet …
htop
1 [
17.1%] 5 [
0.0%]
2 [|
0.7%] 6 [
0.0%]
3
[|||100.0%]
7 [
0.0%]
4 [
0.0%] 8 [
0.0%]
Mem[||
