Bug#867614: [Pkg-zsh-devel] Bug#867614: zsh: endless loop when building under "apt-get source -b"

[Axel Beckert]

Control: tag -1 + confirmed
Control: found -1 5.4.2-3

Hi Sven,

thanks for the bug report.

Sven Joachim wrote:
> Something strange is happening here.  When I try to build zsh with
> "apt-get source -b zsh" in an xterm, during the tests zsh rapidly prints
> the following messages over and over until it is killed:
> 
> ,
> | (eval):4: write error: inappropriate ioctl for device
> | (eval):print:4: write error: broken pipe
> `

When I tried it with the soon to be uploaded zsh 5.4.2-3 (via
https://jenkins.grml.org/debian), I couldn't see these messages, but ...

> These are the final messages after I killed the runaway zsh process:

... I still had a runaway zsh process started by the test suite
which filled up my /tmp/ rather quickly:

Excerpt from lsof output:

→ lsof | fgrep deleted | fgrep /tmp
zsh   12242abe  cwd   DIR   0,39
 40  153609225 /tmp/zsh-867614/zsh-5.4.2/obj/Test/command.tmp (deleted)
zsh   12242abe  txt   REG   0,39
3108064  153599609 /tmp/zsh-867614/zsh-5.4.2/obj/Src/zsh (deleted)
zsh   12242abe0r  REG   0,39
  0  153617200 /tmp/zsh.ztst.5904/ztst.in (deleted)
zsh   12242abe2w  REG   0,39 
2659778560  153608419 /tmp/zsh.ztst.5904/ztst.terr (deleted)
 
^^ = 2.5 GB!

→ ps auxwww | fgrep 12242
abe  12242 99.8  0.0  35324  3020 pts/15   RN   16:02   6:55 ../Src/zsh +Z 
-f ../../Test/ztst.zsh ../../Test/A05execution.ztst

Since the log file already has been deleted, I couldn't (easily) look
into it, but I assume it has been filled with similar messages.

> Note that this problem does _not_ manifest itself when running
> dpkg-buildpackage -b directly instead of under apt-get's control.

I can confirm that.

Regards, Axel
-- 
 ,''`.  |  Axel Beckert , https://people.debian.org/~abe/
: :' :  |  Debian Developer, ftp.ch.debian.org Admin
`. `'   |  4096R: 2517 B724 C5F6 CA99 5329  6E61 2FF9 CD59 6126 16B5
  `-|  1024D: F067 EA27 26B9 C3FC 1486  202E C09E 1D89 9593 0EDE

Bug#867614: zsh: endless loop when building under "apt-get source -b"

[Sven Joachim]

On 2017-07-07 21:33 +0200, Sven Joachim wrote:

> Source: zsh
> Version: 5.3.1-5
> Severity: normal
>
> Something strange is happening here.  When I try to build zsh with
> "apt-get source -b zsh" in an xterm, during the tests zsh rapidly prints
> the following messages over and over until it is killed:
>
> ,
> | (eval):4: write error: inappropriate ioctl for device
> | (eval):print:4: write error: broken pipe
> `

By piping the output through tee(1) I could capture the messages before
the endless loop and saw this test failure:

,
| Running test: Bug regression: piping to anonymous function; piping to 
backround function
| Pattern match failed:
| <\[<->\] <-> <->
| >[7] 10380 10381
| >[7]  + 10380 running( while :; do; print "This is a line"; done; ) | 
| >   10381 done   () { ... }
| Test ../../Test/A05execution.ztst failed: output differs from expected as 
shown above for:
|   { setopt MONITOR } 2>/dev/null
|   if [[ -o MONITOR ]]
|   then
|( while :; do print "This is a line"; done ) | () : &
|sleep 1
|jobs -l
|   else
|print -u $ZTST_fd "Skipping pipe leak test, requires MONITOR option"
|print "[0] 0 0"
|   fi
| Error output:
| (eval):print:4: write error: broken pipe
| (eval):4: write error: inappropriate ioctl for device
`

Cheers,
   Sven

Bug#867614: zsh: endless loop when building under "apt-get source -b"

[Sven Joachim]

Source: zsh
Version: 5.3.1-5
Severity: normal

Something strange is happening here.  When I try to build zsh with
"apt-get source -b zsh" in an xterm, during the tests zsh rapidly prints
the following messages over and over until it is killed:

,
| (eval):4: write error: inappropriate ioctl for device
| (eval):print:4: write error: broken pipe
`

These are the final messages after I killed the runaway zsh process:

,
| (eval):4: write error: inappropriate ioctl for device
| (eval):print:4: write error: broken pipe
| Was testing: Bug regression: piping to anonymous function; piping to 
backround function
| ../../Test/A05execution.ztst: test failed.
| The following may (or may not) help identifying the cause:
|   This test checks for two different bugs, a parser segfault piping to an
|   anonymous function, and a descriptor leak when backgrounding a pipeline
| Makefile:187: recipe for target 'check' failed
| make[2]: *** [check] Interrupt
| Makefile:263: recipe for target 'test' failed
| make[1]: *** [test] Interrupt
| dh_auto_test: make -j2 test VERBOSE=1 died with signal 2
| debian/rules:52: recipe for target 'build-arch' failed
| make: *** [build-arch] Interrupt
| dpkg-buildpackage: error: debian/rules build died from signal 2
| E: Build command 'cd zsh-5.3.1 && dpkg-buildpackage -b -uc' failed.
`

Note that this problem does _not_ manifest itself when running
dpkg-buildpackage -b directly instead of under apt-get's control.


-- System Information:
Debian Release: buster/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (101, 'experimental')
Architecture: i386 (x86_64)
Foreign Architectures: amd64

Kernel: Linux 4.12.0-nouveau (SMP w/2 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), 
LANGUAGE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)