[LLVMdev] dyld: lazy symbol binding failed: fast lazy bind offset out of range

Tue Oct 23 16:46:57 PDT 2012

On Tue, Oct 23, 2012 at 02:03:15PM -0700, Nick Kledzik wrote:
> 
> On Oct 23, 2012, at 1:57 PM, Jack Howarth wrote:
> > Nick,
> >   Can I do this without access to a debug version of dyld? Using the copy of LLVMPolly.so with isl/cloog-isl/gmp statically linked,
> > I find that if I set the breakpoint to the address of the initializer...
> > 
> > dyld: calling initializer function 0x100ebb3a0 in /sw/opt/llvm-3.2/lib/LLVMPolly.so
> > dyld: lazy symbol binding failed: fast lazy bind offset out of range (114808, max=2928) in image /sw/lib/gcc4.7/libexec/gcc/x86_64-apple-darwin12.2.0/4.7.2/cc1
> > dyld: fast lazy bind offset out of range (114808, max=2928) in image /sw/lib/gcc4.7/libexec/gcc/x86_64-apple-darwin12.2.0/4.7.2/cc1
> > 
> > with...
> > 
> > (gdb) break *0x100ebb3a0
> > Breakpoint 2 at 0x100ebb3a0
> > 
> > this lands me at...
> > 
> > dyld: weak bind: LLVMPolly.so:0x1010F4BD0 = libc++.1.dylib:__Znwm, *0x1010F4BD0 = 0x7FFF898BD0DF
> > 
> > Breakpoint 2, 0x0000000100ebb3a0 in pch_address_space ()
> > (gdb) si
> > 0x0000000100ebb3a1 in pch_address_space ()
> > (gdb) si
> > 0x0000000100ebb3a4 in pch_address_space ()
> > (gdb) si
> > 0x0000000100ebb380 in pch_address_space ()
> > (gdb) si
> > 0x0000000100ebb381 in pch_address_space ()
> > ...
> > and on in various dyld calls. Will I really be able to get anything useful from this without a debug build of the system
> > dyld installed?
> >   
> You just need a build of LLVMPolly.so that does not have symbols stripped.  Or get the .dSYM file for your build of LLVMPolly.so  and load that in gdb.
> 
> -Nick
> 

Nick,
   I have uploaded a bzip2 compressed log of the 'si' walk from the failing initializer in LLVMPolly.so
to http://llvm.org/bugs/attachment.cgi?id=9408 in http://llvm.org/bugs/show_bug.cgi?id=14140. The backtrace
from the final crash point shows...

(gdb) bt
#0  0x00007fff5fc0123f in __dyld__ZN13dyldbootstrap5startEPK12macho_headeriPPKclS2_Pm ()
#1  0x00007fff5fc02138 in __dyld__ZN4dyld4haltEPKc ()
#2  0x00007fff5fc04048 in __dyld__ZN4dyld18fastBindLazySymbolEPP11ImageLoaderm ()
#3  0x00007fff8bd808ee in dyld_stub_binder_ ()
#4  0x0000000100faf3e0 in Json::Value::maxUInt ()
#5  0x0000000100ebad65 in pch_address_space ()
#6  0x0000000100ebb5a0 in pch_address_space ()
#7  0x0000000100ebb5b9 in pch_address_space ()
#8  0x00007fff5fc13378 in __dyld__ZN16ImageLoaderMachO18doModInitFunctionsERKN11ImageLoader11LinkContextE ()
#9  0x00007fff5fc13762 in __dyld__ZN16ImageLoaderMachO16doInitializationERKN11ImageLoader11LinkContextE ()
#10 0x00007fff5fc1006e in __dyld__ZN11ImageLoader23recursiveInitializationERKNS_11LinkContextEjRNS_21InitializerTimingListE ()
#11 0x00007fff5fc0feba in __dyld__ZN11ImageLoader15runInitializersERKNS_11LinkContextERNS_21InitializerTimingListE ()
#12 0x00007fff5fc04e38 in __dyld__ZN4dyld15runInitializersEP11ImageLoader ()
#13 0x00007fff5fc0a87c in __dyld_dlopen ()
#14 0x00007fff8bd81dd8 in dlopen ()
#15 0x0000000142f9820f in llvm::sys::DynamicLibrary::getPermanentLibrary (filename=0x141328d38 "/sw/src/fink.build/llvm32-3.2-0/llvm-3.2/build/lib/LLVMPolly.so", errMsg=0x7fff5fbfe6a0) at /sw/src/fink.build/llvm32-3.2-0/llvm-3.2/lib/Support/DynamicLibrary.cpp:77
#16 0x0000000142f79ced in llvm::sys::DynamicLibrary::LoadLibraryPermanently (Filename=0x141328d38 "/sw/src/fink.build/llvm32-3.2-0/llvm-3.2/build/lib/LLVMPolly.so", ErrMsg=0x7fff5fbfe6a0) at DynamicLibrary.h:77
#17 0x0000000142f79ab9 in llvm::PluginLoader::operator= (this=0x143497418, Filename=@0x7fff5fbfe780) at /sw/src/fink.build/llvm32-3.2-0/llvm-3.2/lib/Support/PluginLoader.cpp:29
#18 0x00000001422137de in llvm::cl::opt_storage<llvm::PluginLoader, false, true>::setValue<std::string> (this=0x143497418, V=@0x7fff5fbfe780, initial=false) at CommandLine.h:1072
#19 0x0000000142213271 in llvm::cl::opt<llvm::PluginLoader, false, llvm::cl::parser<std::string> >::handleOccurrence (this=0x1434973e0, pos=2, ArgName={Data = 0x1413259f1 "load=/sw/src/fink.build/llvm32-3.2-0/llvm-3.2/build/lib/LLVMPolly.so", Length = 4, static npos = 18446744073709551615}, Arg={Data = 0x1413259f6 "/sw/src/fink.build/llvm32-3.2-0/llvm-3.2/build/lib/LLVMPolly.so", Length = 63, static npos = 18446744073709551615}) at CommandLine.h:1131
#20 0x0000000142f5e731 in llvm::cl::Option::addOccurrence (this=0x1434973e0, pos=2, ArgName={Data = 0x1413259f1 "load=/sw/src/fink.build/llvm32-3.2-0/llvm-3.2/build/lib/LLVMPolly.so", Length = 4, static npos = 18446744073709551615}, Value={Data = 0x1413259f6 "/sw/src/fink.build/llvm32-3.2-0/llvm-3.2/build/lib/LLVMPolly.so", Length = 63, static npos = 18446744073709551615}, MultiArg=false) at /sw/src/fink.build/llvm32-3.2-0/llvm-3.2/lib/Support/CommandLine.cpp:883
#21 0x0000000142f635ab in CommaSeparateAndAddOccurence (Handler=0x1434973e0, pos=2, ArgName={Data = 0x1413259f1 "load=/sw/src/fink.build/llvm32-3.2-0/llvm-3.2/build/lib/LLVMPolly.so", Length = 4, static npos = 18446744073709551615}, Value={Data = 0x1413259f6 "/sw/src/fink.build/llvm32-3.2-0/llvm-3.2/build/lib/LLVMPolly.so", Length = 63, static npos = 18446744073709551615}, MultiArg=false) at /sw/src/fink.build/llvm32-3.2-0/llvm-3.2/lib/Support/CommandLine.cpp:259
#22 0x0000000142f5ea31 in ProvideOption (Handler=0x1434973e0, ArgName={Data = 0x1413259f1 "load=/sw/src/fink.build/llvm32-3.2-0/llvm-3.2/build/lib/LLVMPolly.so", Length = 4, static npos = 18446744073709551615}, Value={Data = 0x1413259f6 "/sw/src/fink.build/llvm32-3.2-0/llvm-3.2/build/lib/LLVMPolly.so", Length = 63, static npos = 18446744073709551615}, argc=4, argv=0x141325a40, i=@0x7fff5fbfefb0) at /sw/src/fink.build/llvm32-3.2-0/llvm-3.2/lib/Support/CommandLine.cpp:299
#23 0x0000000142f5c7d4 in llvm::cl::ParseCommandLineOptions (argc=4, argv=0x141325a40, Overview=0x0) at /sw/src/fink.build/llvm32-3.2-0/llvm-3.2/lib/Support/CommandLine.cpp:724
#24 0x0000000142209df1 in ConfigureLLVM () at /sw/src/fink.build/dragonegg-gcc47-3.2-0/dragonegg-3.2/src/Backend.cpp:372
#25 0x0000000142208762 in InitializeBackend () at /sw/src/fink.build/dragonegg-gcc47-3.2-0/dragonegg-3.2/src/Backend.cpp:583
#26 0x00000001422079a8 in llvm_emit_globals () at /sw/src/fink.build/dragonegg-gcc47-3.2-0/dragonegg-3.2/src/Backend.cpp:1741
(gdb) 

The crash shows up as in the walk as...

(gdb) 
0x00007fff5fc24182 in __dyld_mach_init ()
(gdb) 
0x00007fff5fc01239 in __dyld__ZN13dyldbootstrap5startEPK12macho_headeriPPKclS2_Pm ()
(gdb) 
0x00007fff5fc0123c in __dyld__ZN13dyldbootstrap5startEPK12macho_headeriPPKclS2_Pm ()
(gdb) 
0x00007fff5fc0123f in __dyld__ZN13dyldbootstrap5startEPK12macho_headeriPPKclS2_Pm ()
(gdb) 

Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x0000000000000008
0x00007fff5fc0123f in __dyld__ZN13dyldbootstrap5startEPK12macho_headeriPPKclS2_Pm ()

The llvm build is built as a debug build as is the dragonegg build so both have been
built with -g and are unstripped. I am still very unclear on how I am supposed to
extract the offending symbol from this log. Since dyld seems to be from reading pch,
I assume this is a symbol from libstdc++. This would seem odd since cc1 isn't built
with c++ on gcc 4.7.2 and isn't linked against libstdc++. The dragonegg plugin that
dlopens the LLVMPolly plugin is built with c+ and linked against libstdc++ but I
verified that building it with the c compiler to avoid the libstdc++ linkage doesn't
solve this bug. Thanks in advance for any analysis of the log.
           Jack