Segmentation fault in ippsInflate_8u(e9_ippsInflate_8u) in zlib 1.2.8

[Igor_Z_]

Hi! I have a problem (segfault) with multithreaded application that uses ImageMagick that uses libpng that uses zlib 1.2.8 with Intel IPP patch version 2017 update 3. I can't reproduce a crash with the same images that are processed when application had crashed. This looks like a race. Moreover when I try to inspect every coredump created by this app, I have corrupted stacktrace:

#0  0x00007f611b740720 in LWIN_COPY03byte8gas_1 ()
#1  0x00007f5f6b610730 in ?? ()
#2  0x00007f5f6b610738 in ?? ()
#3  0x00007f5f6b6106d0 in ?? ()
#4  0x00007f5f6b610798 in ?? ()
#5  0x00007f5f6b610728 in ?? ()
#6  0x00007f5f6b6106e0 in ?? ()
#7  0x000000000000001e in ?? ()
#8  0x0000000000008000 in ?? ()
#9  0x0000000000007fff in ?? ()
#10 0x0000000000000001 in ?? ()
#11 0x0000001b00000009 in ?? ()
#12 0x0000000000000102 in ?? ()
#13 0x00007f5dc49bb580 in ?? ()
#14 0x0000000000000007 in ?? ()
#15 0x0000000000000009 in ?? ()
#16 0x0000000000000001 in ?? ()
#17 0x00007f5f6b610780 in ?? ()
#18 0x00007f611b6f0bf4 in e9_ippsInflate_8u ()

My setup:

Ubuntu 14.04, zlib was built in according to readme of Intel patch

libpng12-0=1.2.54-1ubuntu2

Problem was reproduced on Intel(R) Xeon(R) CPU E5-2650 v2 @ 2.60GHz and Intel(R) Xeon(R) CPU E5-2660 0 @ 2.20GHz cpus

Could this be related to the following problem: https://software.intel.com/en-us/forums/intel-integrated-performance-primitives/topic/288222 ?

Could you please help me to debug the problem?

Thanks, Igor

[Igor_Z_]

I have more info about the problem:

in all previous attempts I ran my app with jemalloc 3.5.1. Now I run app with default glibc allocator and no more segfaults.

Looks like problem with Intel patch and jemalloc interaction.

[Sergey_K_Intel]

Hi Igor,

Thank you for notifying us! We fixed the similar problem in the upcoming Intel(R) IPP release (next major). May be, it will resolve your issue too.

As a workaround you can use standard allocator, or continue to use jemalloc, but to allocate "size+64" bytes. I don't know how it is done  in ImageMagick + libpng, but try to update memory allocation code to really allocate 64 bytes more.

Regards,
Sergey