Hi,

�� aioEnable et al should really check the fd argument against FD_SETSIZE and answer error codes that get tested in clients.�� See two messages below:

On Tue, Mar 6, 2018 at 2:49 AM, Sabine Manaa��<manaa.sabine@gmail.com>��wrote:

Hi,

I can report the following:��

The problem with the Buffer overflow remains also with OSProcess.��
Also with the normal vm (https://get.pharo.org��).

Summary: I have buffer overflow crashes with my application on Linux.
The same code runs without problems on MacOS and on Windows.
I have the same test data/database and do exactly the same.

The problem occurs only after calling several times OSProcess/OSSubprocess.
This is the reason why I first had a��suspicion that OSSubprocess is responsible for the crashes.

Can anyone tell me how to proceed to find the reason for the buffer overflow?
There is no PharoDebug.log��

Help is very appreciated!

This is the message when terminating:

root@Pharo_ubuntu_16:/spf/build# ./pharo Pharo-Productive-SPF.image --no-quit
SmalltalkImageInstanceID class>>startUp*** buffer overflow detected ***: /spf/build/pharo-vm/lib/pharo/5.0-201707201942/pharo terminated
======= Backtrace: =========
/lib/i386-linux-gnu/libc.so.6(+0x67377)[0xf75b9377]
/lib/i386-linux-gnu/libc.so.6(__fortify_fail+0x68)[0xf7649708]
/lib/i386-linux-gnu/libc.so.6(+0xf58f8)[0xf76478f8]
/lib/i386-linux-gnu/libc.so.6(+0xf75fa)[0xf76495fa]
/spf/build/pharo-vm/lib/pharo/5.0-201707201942/pharo(aioEnable+0x31)[0x80c9811]
/spf/build/pharo-vm/lib/pharo/5.0-201707201942/pharo[0x81215ee]
[0x90010e0]
[0x90ad2d0]
[0x90db8b4]
[0x90ad24a]
[0x900be6b]
[0x900b04d]
[0x9007a3e]
[0x9004247]
[0x9004572]
[0x9001020]
[0xa98c524]
[0xb1755db]
[0x9003efc]
[0x9001020]
[0xdcb558c]
[0xb0d4d95]
[0x9000ff0]
======= Memory map: ========
08048000-08164000 r-xp 00000000 00:1b 1183256�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/pharo
08164000-08165000 r--p 0011b000 00:1b 1183256�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/pharo
08165000-08170000 rw-p 0011c000 00:1b 1183256�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/pharo
08170000-081a7000 rw-p 00000000 00:00 0��
08fdd000-08ffe000 rw-p 00000000 00:00 0�� [heap]
09000000-09100000 rwxp 00000000 00:00 0��
09100000-11200000 rw-p 00000000 00:00 0��
f552e000-f554a000 r-xp 00000000 00:1b 8244 �� /lib/i386-linux-gnu/libgcc_s.so.1
f554a000-f554b000 rw-p 0001b000 00:1b 8244 �� /lib/i386-linux-gnu/libgcc_s.so.1
f554b000-f684c000 rw-p 00000000 00:00 0��
f684c000-f684f000 r-xp 00000000 00:1b 1183242�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/JPEGReaderPlugin.so
f684f000-f6850000 r--p 00002000 00:1b 1183242�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/JPEGReaderPlugin.so
f6850000-f6851000 rw-p 00003000 00:1b 1183242�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/JPEGReaderPlugin.so
f6851000-f68b2000 r-xp 00000000 00:1b 1183230�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/libssl.so.1.0.0
f68b2000-f68b3000 ---p 00061000 00:1b 1183230�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/libssl.so.1.0.0
f68b3000-f68b5000 r--p 00061000 00:1b 1183230�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/libssl.so.1.0.0
f68b5000-f68b9000 rw-p 00063000 00:1b 1183230�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/libssl.so.1.0.0
f68b9000-f6a7b000 r-xp 00000000 00:1b 1183239�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/libcrypto.so.1.0.0
f6a7b000-f6a7c000 ---p 001c2000 00:1b 1183239�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/libcrypto.so.1.0.0
f6a7c000-f6a8c000 r--p 001c2000 00:1b 1183239�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/libcrypto.so.1.0.0
f6a8c000-f6a93000 rw-p 001d2000 00:1b 1183239�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/libcrypto.so.1.0.0
f6a93000-f6a96000 rw-p 00000000 00:00 0��
f6a96000-f6a9b000 r-xp 00000000 00:1b 1183249�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/SqueakSSL.so
f6a9b000-f6a9c000 r--p 00004000 00:1b 1183249�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/SqueakSSL.so
f6a9c000-f6a9d000 rw-p 00005000 00:1b 1183249�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/SqueakSSL.so
f6a9d000-f6ab1000 r-xp 00000000 00:1b 7925 �� /lib/i386-linux-gnu/libresolv-2.23.so
f6ab1000-f6ab2000 ---p 00014000 00:1b 7925 �� /lib/i386-linux-gnu/libresolv-2.23.so
f6ab2000-f6ab3000 r--p 00014000 00:1b 7925 �� /lib/i386-linux-gnu/libresolv-2.23.so
f6ab3000-f6ab4000 rw-p 00015000 00:1b 7925 �� /lib/i386-linux-gnu/libresolv-2.23.so
f6ab4000-f6ab6000 rw-p 00000000 00:00 0��
f6ab6000-f6abb000 r-xp 00000000 00:1b 7931 �� /lib/i386-linux-gnu/libnss_dns-2.23.so
f6abb000-f6abc000 r--p 00004000 00:1b 7931 �� /lib/i386-linux-gnu/libnss_dns-2.23.so
f6abc000-f6abd000 rw-p 00005000 00:1b 7931 �� /lib/i386-linux-gnu/libnss_dns-2.23.so
f6abd000-f6c05000 rw-p 00000000 00:00 0��
f6c05000-f6c2e000 r-xp 00000000 00:1b 8373 �� /lib/i386-linux-gnu/libpng12.so.0.54.0
f6c2e000-f6c2f000 r--p 00028000 00:1b 8373 �� /lib/i386-linux-gnu/libpng12.so.0.54.0
f6c2f000-f6c30000 rw-p 00029000 00:1b 8373 �� /lib/i386-linux-gnu/libpng12.so.0.54.0
f6c30000-f6c49000 r-xp 00000000 00:1b 8362 �� /lib/i386-linux-gnu/libz.so.1.2.8
f6c49000-f6c4a000 r--p 00018000 00:1b 8362 �� /lib/i386-linux-gnu/libz.so.1.2.8
f6c4a000-f6c4b000 rw-p 00019000 00:1b 8362 �� /lib/i386-linux-gnu/libz.so.1.2.8
f6c4b000-f6cf6000 r-xp 00000000 00:1b 8395 �� /usr/lib/i386-linux-gnu/libfreetype.so.6.12.1
f6cf6000-f6cfa000 r--p 000aa000 00:1b 8395 �� /usr/lib/i386-linux-gnu/libfreetype.so.6.12.1
f6cfa000-f6cfb000 rw-p 000ae000 00:1b 8395 �� /usr/lib/i386-linux-gnu/libfreetype.so.6.12.1
f6cfb000-f6d02000 r-xp 00000000 00:1b 1183229�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/FT2Plugin.so
f6d02000-f6d03000 r--p 00006000 00:1b 1183229�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/FT2Plugin.so
f6d03000-f6d04000 rw-p 00007000 00:1b 1183229�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/FT2Plugin.so
f6d04000-f6d0f000 r-xp 00000000 00:1b 7934 �� /lib/i386-linux-gnu/libnss_files-2.23.so
f6d0f000-f6d10000 r--p 0000a000 00:1b 7934 �� /lib/i386-linux-gnu/libnss_files-2.23.so
f6d10000-f6d11000 rw-p 0000b000 00:1b 7934 �� /lib/i386-linux-gnu/libnss_files-2.23.so
f6d11000-f6d38000 rw-p 00000000 00:00 0��
f6d38000-f6d39000 ---p 00000000 00:00 0��
f6d39000-f7539000 rw-p 00000000 00:00 0�� [stack:21188]
f7539000-f753b000 r-xp 00000000 00:1b 7968 �� /usr/lib/i386-linux-gnu/gconv/MACINTOSH.so
f753b000-f753c000 r--p 00001000 00:1b 7968 �� /usr/lib/i386-linux-gnu/gconv/MACINTOSH.so
f753c000-f753d000 rw-p 00002000 00:1b 7968 �� /usr/lib/i386-linux-gnu/gconv/MACINTOSH.so
f753d000-f7544000 r--s 00000000 00:1b 7977 �� /usr/lib/i386-linux-gnu/gconv/gconv-modules.cache
f7544000-f754a000 r-xp 00000000 00:1b 1183240�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/vm-sound-OSS.so
f754a000-f754b000 r--p 00005000 00:1b 1183240�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/vm-sound-OSS.so
f754b000-f754c000 rw-p 00006000 00:1b 1183240�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/vm-sound-OSS.so
f754c000-f754e000 r-xp 00000000 00:1b 1183257�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/vm-display-null.so
f754e000-f754f000 r--p 00001000 00:1b 1183257�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/vm-display-null.so
f754f000-f7550000 rw-p 00002000 00:1b 1183257�� /spf/build/pharo-vm/lib/pharo/5.0-201707201942/vm-display-null.so
f7550000-f7552000 rw-p 00000000 00:00 0��
f7552000-f7702000 r-xp 00000000 00:1b 7921 �� /lib/i386-linux-gnu/libc-2.23.so
f7702000-f7704000 r--p 001af000 00:1b 7921 �� /lib/i386-linux-gnu/libc-2.23.so
f7704000-f7705000 rw-p 001b1000 00:1b 7921 �� /lib/i386-linux-gnu/libc-2.23.so
f7705000-f7708000 rw-p 00000000 00:00 0��
f7708000-f775b000 r-xp 00000000 00:1b 7917 �� /lib/i386-linux-gnu/libm-2.23.so
f775b000-f775c000 r--p 00052000 00:1b 7917 �� /lib/i386-linux-gnu/libm-2.23.so
f775c000-f775d000 rw-p 00053000 00:1b 7917 �� /lib/i386-linux-gnu/libm-2.23.so
f775d000-f7776000 r-xp 00000000 00:1b 7920 �� /lib/i386-linux-gnu/libpthread-2.23.so
f7776000-f7777000 r--p 00018000 00:1b 7920 �� /lib/i386-linux-gnu/libpthread-2.23.so
f7777000-f7778000 rw-p 00019000 00:1b 7920 �� /lib/i386-linux-gnu/libpthread-2.23.so
f7778000-f777a000 rw-p 00000000 00:00 0��
f777a000-f777d000 r-xp 00000000 00:1b 7923 �� /lib/i386-linux-gnu/libdl-2.23.so
f777d000-f777e000 r--p 00002000 00:1b 7923 �� /lib/i386-linux-gnu/libdl-2.23.so
f777e000-f777f000 rw-p 00003000 00:1b 7923 �� /lib/i386-linux-gnu/libdl-2.23.so
f777f000-f7780000 rw-p 00000000 00:00 0��
f7780000-f7781000 r-xp 00000000 00:00 0�� [vdso]
f7781000-f77a4000 r-xp 00000000 00:1b 7919 �� /lib/i386-linux-gnu/ld-2.23.so
f77a4000-f77a5000 r--p 00022000 00:1b 7919 �� /lib/i386-linux-gnu/ld-2.23.so
f77a5000-f77a6000 rw-p 00023000 00:1b 7919 �� /lib/i386-linux-gnu/ld-2.23.so
ffc55000-ffcd1000 rw-p 00000000 00:00 0�� [stack]
./pharo: line 11: 14639 Aborted �� "$DIR"/"pharo-vm/pharo" --nodisplay "$@"

��

On Tue, Mar 6, 2018 at 5:26 AM, Henrik Sperre Johansen <henrik.s.johansen@veloxit.no> wrote:

Seems to me aioEnable somehow triggers this.
It maintains buffers of size FD_SETSIZE (1024 on Linux)*, so an fd
parameter** >= that, could probably trigger such an error.
Maybe you could put a halt in whichever method in OSSubprocess/OSProcess
calls the primitive triggered when condition occurs, to see if that is the
cause?
If so, identifying *why* you end up with fd's that high (which, afaik, isn't
normal), will probably lead to a workaround/solution...

Cheers,
Henry

*
https://github.com/pharo-project/pharo-vm/blob/e0ce2d9d78c3c7b37bbc12cd8730c6a15f1f057c/opensmalltalk-vm/platforms/unix/vm/aio.c
**
https://github.com/pharo-project/pharo-vm/blob/c50dec02d2875de56c84d11889c78484e2d5cda8/mc/VMConstruction-Plugins-AioPlugin.package/UnixAioPlugin.class/instance/primitiveAioEnable.st

--
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��

_,,,^..^,,,_

best,��Eliot