[Pkg-javascript-devel] Bug#987364: Bug#987364: /usr/bin/node: segfaults regularly in node-opencv autopkgtest on ppc64el

[Jérémy Lal]

Control: reassign -1 opencv

Le jeu. 22 avr. 2021 à 17:51, Jérémy Lal <kapouer at melix.org> a écrit :

> Tags: confirmed
>
> Le jeu. 22 avr. 2021 à 15:27, Paul Gevers <elbrus at debian.org> a écrit :
>
>> Package: nodejs
>> Version: 12.20.2~dfsg-2
>> Severity: serious
>> Justification: segfaults
>> File: /usr/bin/node
>>
>> Hi maintainer,
>>
>> As can be seen in the autopkgtest history of node-opencv [1], that
>> autopkgtest regularly fails, and all failures with logs still present
>> are due to the same issue: node segfaults. The output from one of these
>> logs is at the bottom of this mail.
>>
>> I ran the lines from d/t/unittest manually upto the last call and next I
>> ran $(node readimage.js) twice. The second time already triggered the
>> issue, see below.
>>
>
> Reproduced on plummer 1/8 times maybe.
>


Here's the stack trace, which indicates the problem is not in nodejs:
Reassigning to opencv.
https://sources.debian.org/src/opencv/4.5.1+dfsg-4/modules/imgcodecs/src/grfmt_png.cpp/?hl=127#L138

(gdb) bt
#0  __memcpy_power7 () at ../sysdeps/powerpc/powerpc64/power7/memcpy.S:235
#1  0x00007ffff0145254 in memcpy (__len=4, __src=<optimized out>,
__dest=0x7fffc779d480) at
/usr/include/powerpc64le-linux-gnu/bits/string_fortified.h:34
#2  cv::PngDecoder::readDataFromBuf (_png_ptr=0x7fffb0000d20,
dst=0x7fffc779d480 "\226\341l\204", size=4) at
../modules/imgcodecs/src/grfmt_png.cpp:138
#3  0x00007fffdb5799ac in png_read_data (png_ptr=<optimized out>,
data=<optimized out>, length=<optimized out>) at pngrio.c:37
#4  0x00007fffdb581b2c in png_crc_error (png_ptr=0x7fffb0000d20) at
pngrutil.c:275
#5  0x00007fffdb581c70 in png_crc_finish (png_ptr=0x7fffb0000d20,
skip=<optimized out>) at pngrutil.c:229
#6  0x00007fffdb5882a8 in png_read_IDAT_data (png_ptr=0x7fffb0000d20,
output=<optimized out>, avail_out=<optimized out>) at pngrutil.c:4351
#7  0x00007fffdb57608c in png_read_row (png_ptr=0x7fffb0000d20,
row=0x7fffc697c300 "", dsp_row=0x0) at pngread.c:623
#8  0x00007fffdb5782d8 in png_read_image (png_ptr=0x7fffb0000d20,
image=0x7fffb000b910) at pngread.c:833
#9  0x00007ffff0145fc8 in cv::PngDecoder::readData (this=0x7fffb0000c20,
img=...) at ../modules/imgcodecs/src/grfmt_png.cpp:284
#10 0x00007ffff0128e4c in cv::imdecode_ (buf=..., flags=flags at entry=1,
mat=...) at ../modules/imgcodecs/src/loadsave.cpp:860
#11 0x00007ffff0129a70 in cv::imdecode (_buf=..., flags=<optimized out>) at
../modules/imgcodecs/src/loadsave.cpp:900
#12 0x00007ffff0539ec8 in AsyncImDecodeWorker::Execute (this=0x100253b00)
at /usr/include/opencv4/opencv2/core/mat.inl.hpp:92
#13 0x00007ffff0530ba4 in Nan::AsyncExecute (req=<optimized out>) at
../../../../usr/lib/nodejs/nan/nan.h:2284
#14 0x00007ffff60aac84 in uv__queue_work (w=<optimized out>) at
../deps/uv/src/threadpool.c:321
#15 0x00007ffff60aad9c in worker (arg=0x0) at
../deps/uv/src/threadpool.c:122
#16 0x00007ffff54a956c in start_thread (arg=0x7fffc779f140) at
pthread_create.c:477
#17 0x00007ffff53b8044 in clone () at
../sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S:82
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