1341: [PATCH] Fix potential null pointer dereference in ccmain/paragraphs.cpp #8
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Fixed in commit d8a55d7 |
stweil
referenced
this pull request
in stweil/tesseract
May 20, 2018
The following code caused a crash when Tesseract was compiled with -ftrapv: 1259 int width = right - left; #0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51 #1 0x00007ffff665c231 in __GI_abort () at abort.c:79 #2 0x00007ffff69e34d8 in __subvsi3 () from /lib/x86_64-linux-gnu/libgcc_s.so.1 #3 0x000055555560c1c5 in tesseract::ColPartitionGrid::FindVPartitionPartners (this=0x55555717e3c0, to_the_left=true, part=0x5555571fa380) at ../../../src/textord/colpartitiongrid.cpp:1259 #4 0x000055555560bda0 in tesseract::ColPartitionGrid::FindPartitionPartners (this=0x55555717e3c0) at ../../../src/textord/colpartitiongrid.cpp:1196 #5 0x00005555555f52b6 in tesseract::ColumnFinder::FindBlocks (this=0x55555717e280, pageseg_mode=tesseract::PSM_AUTO, scaled_color=0x0, scaled_factor=-1, input_block=0x555555f91390, photo_mask_pix=0x555555f73300, thresholds_pix=0x555555f76290, grey_pix=0x555555f762e0, pixa_debug=0x7ffff7fc88d8, blocks=0x7fffffffd250, diacritic_blobs=0x7fffffffd330, to_blocks=0x7fffffffd328) at ../../../src/textord/colfind.cpp:431 #6 0x00005555555c240d in tesseract::Tesseract::AutoPageSeg (this=0x7ffff7fa5010, pageseg_mode=tesseract::PSM_AUTO, blocks=0x555555f761d0, to_blocks=0x7fffffffd328, diacritic_blobs=0x7fffffffd330, osd_tess=0x0, osr=0x7fffffffd6d0) at ../../../src/ccmain/pagesegmain.cpp:229 #7 0x00005555555c1ffd in tesseract::Tesseract::SegmentPage (this=0x7ffff7fa5010, input_file=0x555555f7bd90, blocks=0x555555f761d0, osd_tess=0x0, osr=0x7fffffffd6d0) at ../../../src/ccmain/pagesegmain.cpp:141 #8 0x0000555555582540 in tesseract::TessBaseAPI::FindLines (this=0x555555a9a580 <main::api>) at ../../../src/api/baseapi.cpp:2291 #9 0x000055555557ce42 in tesseract::TessBaseAPI::Recognize (this=0x555555a9a580 <main::api>, monitor=0x0) at ../../../src/api/baseapi.cpp:802 Signed-off-by: Stefan Weil <sw@weilnetz.de>
noahmetzger
pushed a commit
to noahmetzger/tesseract
that referenced
this pull request
Jul 31, 2018
The following code caused a crash when Tesseract was compiled with -ftrapv: 1259 int width = right - left; #0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51 tesseract-ocr#1 0x00007ffff665c231 in __GI_abort () at abort.c:79 tesseract-ocr#2 0x00007ffff69e34d8 in __subvsi3 () from /lib/x86_64-linux-gnu/libgcc_s.so.1 tesseract-ocr#3 0x000055555560c1c5 in tesseract::ColPartitionGrid::FindVPartitionPartners (this=0x55555717e3c0, to_the_left=true, part=0x5555571fa380) at ../../../src/textord/colpartitiongrid.cpp:1259 tesseract-ocr#4 0x000055555560bda0 in tesseract::ColPartitionGrid::FindPartitionPartners (this=0x55555717e3c0) at ../../../src/textord/colpartitiongrid.cpp:1196 tesseract-ocr#5 0x00005555555f52b6 in tesseract::ColumnFinder::FindBlocks (this=0x55555717e280, pageseg_mode=tesseract::PSM_AUTO, scaled_color=0x0, scaled_factor=-1, input_block=0x555555f91390, photo_mask_pix=0x555555f73300, thresholds_pix=0x555555f76290, grey_pix=0x555555f762e0, pixa_debug=0x7ffff7fc88d8, blocks=0x7fffffffd250, diacritic_blobs=0x7fffffffd330, to_blocks=0x7fffffffd328) at ../../../src/textord/colfind.cpp:431 tesseract-ocr#6 0x00005555555c240d in tesseract::Tesseract::AutoPageSeg (this=0x7ffff7fa5010, pageseg_mode=tesseract::PSM_AUTO, blocks=0x555555f761d0, to_blocks=0x7fffffffd328, diacritic_blobs=0x7fffffffd330, osd_tess=0x0, osr=0x7fffffffd6d0) at ../../../src/ccmain/pagesegmain.cpp:229 tesseract-ocr#7 0x00005555555c1ffd in tesseract::Tesseract::SegmentPage (this=0x7ffff7fa5010, input_file=0x555555f7bd90, blocks=0x555555f761d0, osd_tess=0x0, osr=0x7fffffffd6d0) at ../../../src/ccmain/pagesegmain.cpp:141 tesseract-ocr#8 0x0000555555582540 in tesseract::TessBaseAPI::FindLines (this=0x555555a9a580 <main::api>) at ../../../src/api/baseapi.cpp:2291 tesseract-ocr#9 0x000055555557ce42 in tesseract::TessBaseAPI::Recognize (this=0x555555a9a580 <main::api>, monitor=0x0) at ../../../src/api/baseapi.cpp:802 Signed-off-by: Stefan Weil <sw@weilnetz.de>
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https://code.google.com/p/tesseract-ocr/issues/detail?id=1341 (http://web.archive.org/web/20150413012149/https://code.google.com/p/tesseract-ocr/issues/detail?id=1341)