Re: PDFium, beware

On 12.02.2018 09:29, Miklos Vajna wrote:
> Do I understand correctly the source of the problem is their custom
> allocator?

Yes.  See below for the backtrace of failing CppunitTest_svtools_graphic 
on Linux aarch64 with 64K page size.

> If so, I guess talking to the pdfium devs and ask them to
> provide a way to avoid their custom allocator (a compile-time option)
> would help our situation, or did I miss something? (I can at least try
> to talk to them, they merged various "don't use bundled XYZ" patches
> before from me.)

If that could indeed be disabled, that should solve it.  So if you want 
to ask upstream, please go ahead.


> #1  0x0000ffff7fd61da4 in abort () at /lib/libc.so.6
> #2  0x0000ffff7b9341e4 in pdfium::base::SetSystemPagesInaccessible(void*, unsigned long) 
> (address=address@entry=0x1029e02000, length=length@entry=8192) at 
> /run/build/libreoffice/workdir/UnpackedTarball/pdfium/third_party/base/allocator/partition_allocator/page_allocator.cpp:198
> #3  0x0000ffff7b93518c in pdfium::base::PartitionAllocSlowPath(pdfium::base::PartitionRootBase*, int, 
> unsigned long, pdfium::base::PartitionBucket*) (num_partition_pages=<optimized out>, flags=0, 
> root=0xffff7fe82c80) at 
> /run/build/libreoffice/workdir/UnpackedTarball/pdfium/third_party/base/allocator/partition_allocator/partition_alloc.cpp:403
> #4  0x0000ffff7b93518c in pdfium::base::PartitionAllocSlowPath(pdfium::base::PartitionRootBase*, int, unsigned 
> long, pdfium::base::PartitionBucket*) (root=0xffff7fe82c80, root@entry=0xffff7bb4c8f8 
> <gStringPartitionAllocator>, flags=flags@entry=0, size=size@entry=80, bucket=0xffff7fe749d0, 
> bucket@entry=0xffff7bb4e180 <gStringPartitionAllocator+6280>) at 
> /run/build/libreoffice/workdir/UnpackedTarball/pdfium/third_party/base/allocator/partition_allocator/partition_alloc.cpp:816
> #5  0x0000ffff7b8e28e8 in fxcrt::StringDataTemplate<char>::Create(unsigned long) (bucket=0xffff7bb4e180 
> <gStringPartitionAllocator+6280>, size=80, flags=0, root=<optimized out>) at 
> /run/build/libreoffice/workdir/UnpackedTarball/pdfium/third_party/base/allocator/partition_allocator/partition_alloc.h:675
> #6  0x0000ffff7b8e28e8 in fxcrt::StringDataTemplate<char>::Create(unsigned long) (type_name=0xffff7ba49d40 
> "StringDataTemplate", size=<optimized out>, flags=0, root=<optimized out>) at 
> /run/build/libreoffice/workdir/UnpackedTarball/pdfium/third_party/base/allocator/partition_allocator/partition_alloc.h:798
> #7  0x0000ffff7b8e28e8 in fxcrt::StringDataTemplate<char>::Create(unsigned long) (type_name=0xffff7ba49d40 
> "StringDataTemplate", size=<optimized out>, root=<optimized out>) at 
> /run/build/libreoffice/workdir/UnpackedTarball/pdfium/third_party/base/allocator/partition_allocator/partition_alloc.h:808
> #8  0x0000ffff7b8e28e8 in fxcrt::StringDataTemplate<char>::Create(unsigned long) 
> (nLen=nLen@entry=16) at 
> /run/build/libreoffice/workdir/UnpackedTarball/pdfium/core/fxcrt/string_data_template.h:39
> #9  0x0000ffff7b8e2a18 in fxcrt::StringDataTemplate<char>::Create(char const*, unsigned long) 
> (pStr=0xffff7bac56b5 "/usr/share/fonts", nLen=16) at 
> /run/build/libreoffice/workdir/UnpackedTarball/pdfium/core/fxcrt/string_data_template.h:51
> #10 0x0000ffff7b8e01cc in fxcrt::ByteString::ByteString(char const*, unsigned long) (this=0xffffdef31c50, 
> pStr=<optimized out>, nLen=<optimized out>) at 
> /run/build/libreoffice/workdir/UnpackedTarball/pdfium/core/fxcrt/bytestring.cpp:96
> #11 0x0000ffff7b90d394 in IFX_SystemFontInfo::CreateDefault(char const**) (pUserPaths=0x0) at 
> /run/build/libreoffice/workdir/UnpackedTarball/pdfium/core/fxge/fx_ge_linux.cpp:151
> #12 0x0000ffff7b90d4b4 in CFX_GEModule::InitPlatform() (this=<optimized out>) at 
> /run/build/libreoffice/workdir/UnpackedTarball/pdfium/core/fxge/fx_ge_linux.cpp:161
> #13 0x0000ffff7b907630 in CFX_GEModule::Init(char const**) (this=<optimized out>, 
> userFontPaths=<optimized out>) at 
> /run/build/libreoffice/workdir/UnpackedTarball/pdfium/core/fxge/cfx_gemodule.cpp:46
> #14 0x0000ffff7b8088a4 in FPDF_InitLibraryWithConfig(FPDF_LIBRARY_CONFIG const*) 
> (cfg=0xffffdef31d80) at 
> /run/build/libreoffice/workdir/UnpackedTarball/pdfium/fpdfsdk/fpdfview.cpp:463
> #15 0x0000ffff7caadb50 in vcl::ImportPDF(SvStream&, Bitmap&, com::sun::star::uno::Sequence<signed 
> char>&, unsigned long, unsigned long) () at /run/build/libreoffice/instdir/program/libvcllo.so
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