LLD segfault in SymbolTableSection<ELFT>::writeTo #79944
Comments
EugeneZelenko
added
lld:ELF
crash
|
@llvm/issue-subscribers-lld-elf Author: Levi Zim (kxxt)
Hi, I encountered a segfault in lld when cross-compiling chromium from x86_64 host to riscv64.
Initially I used Later I tried The failing command is "python3" "../../build/toolchain/gcc_link_wrapper.py" --output="./chrome" -- ~/Workspaces/llvm/llvm-project/build-debug/bin/clang++ -Wl,--version-script=../../build/linux/chrome.map -Werror -fuse-ld=lld -Wl,--fatal-warnings -Wl,--build-id=sha1 -fPIC -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now -Wl,--icf=all -Wl,--color-diagnostics -Wl,-mllvm,-instcombine-lower-dbg-declare=0 -Wl,-mllvm,-split-threshold-for-reg-with-hint=0 -Wl,--thinlto-cache-dir=thinlto-cache -Wl,--thinlto-cache-policy=cache_size=10\%:cache_size_bytes=40g:cache_size_files=100000 -flto=thin -Wl,--thinlto-jobs=all -Wl,-mllvm,-import-instr-limit=30 -Wl,-mllvm,-disable-auto-upgrade-debug-info -fwhole-program-vtables -Wl,--undefined-version -Wl,--no-call-graph-profile-sort --target=riscv64-linux-gnu -no-canonical-prefixes -Wl,-O2 -Wl,--gc-sections -Wl,--gdb-index -Wl,-z,defs -Wl,--as-needed -nostdlib++ --sysroot=../../build/linux/debian_sid_riscv64-sysroot -rdynamic -pie -Wl,--disable-new-dtags -Wl,--lto-O2 -L../../build/linux/debian_sid_riscv64-sysroot/usr/lib/riscv64-linux-gnu -o "./chrome" -Wl,--start-group @"./chrome.rsp" -Wl,--end-group ../../third_party/llvm-build/Release+Asserts/lib/clang/18/lib/riscv64-unknown-linux-gnu/libclang_rt.builtins.a -ldl -lpthread -lrt -lgmodule-2.0 -lgobject-2.0 -lgthread-2.0 -lglib-2.0 -lnss3 -lnssutil3 -lsmime3 -lplds4 -lplc4 -lnspr4 -ldbus-1 -latk-1.0 -latk-bridge-2.0 -lcups -lgio-2.0 -latspi -lresolv -lexpat -luuid -lX11 -lXcomposite -lXdamage -lXext -lXfixes -lXrender -lXrandr -lXtst -lgbm -lEGL -ldrm -lxcb -lxkbcommon -lXi -lpci -lffi_pic -lpangocairo-1.0 -lpango-1.0 -lharfbuzz -lcairo -lasound -lm -lz -lxshmfence -lstdc++ obj/third_party/rust/cxx/v1/lib/libcxx_lib.rlib local_rustc_sysroot/lib/rustlib/riscv64gc-unknown-linux-gnu/lib/libstd_std.rlib local_rustc_sysroot/lib/rustlib/riscv64gc-unknown-linux-gnu/lib/liballoc_alloc.rlib local_rustc_sysroot/lib/rustlib/riscv64gc-unknown-linux-gnu/lib/libcompiler_builtins_compiler_builtins.rlib local_rustc_sysroot/lib/rustlib/riscv64gc-unknown-linux-gnu/lib/librustc_std_workspace_core_rustc_std_workspace_core.rlib local_rustc_sysroot/lib/rustlib/riscv64gc-unknown-linux-gnu/lib/libcore_core.rlib local_rustc_sysroot/lib/rustlib/riscv64gc-unknown-linux-gnu/lib/libprofiler_builtins_profiler_builtins.rlib local_rustc_sysroot/lib/rustlib/riscv64gc-unknown-linux-gnu/lib/libcfg_if_cfg_if.rlib local_rustc_sysroot/lib/rustlib/riscv64gc-unknown-linux-gnu/lib/libhashbrown_hashbrown.rlib local_rustc_sysroot/lib/rustlib/riscv64gc-unknown-linux-gnu/lib/librustc_std_workspace_alloc_rustc_std_workspace_alloc.rlib local_rustc_sysroot/lib/rustlib/riscv64gc-unknown-linux-gnu/lib/liblibc_libc.rlib local_rustc_sysroot/lib/rustlib/riscv64gc-unknown-linux-gnu/lib/libpanic_abort_panic_abort.rlib local_rustc_sysroot/lib/rustlib/riscv64gc-unknown-linux-gnu/lib/libpanic_unwind_panic_unwind.rlib local_rustc_sysroot/lib/rustlib/riscv64gc-unknown-linux-gnu/lib/libunwind_unwind.rlib local_rustc_sysroot/lib/rustlib/riscv64gc-unknown-linux-gnu/lib/librustc_demangle_rustc_demangle.rlib local_rustc_sysroot/lib/rustlib/riscv64gc-unknown-linux-gnu/lib/libstd_detect_std_detect.rlib local_rustc_sysroot/lib/rustlib/riscv64gc-unknown-linux-gnu/lib/libaddr2line_addr2line.rlib local_rustc_sysroot/lib/rustlib/riscv64gc-unknown-linux-gnu/lib/libgimli_gimli.rlib local_rustc_sysroot/lib/rustlib/riscv64gc-unknown-linux-gnu/lib/libminiz_oxide_miniz_oxide.rlib local_rustc_sysroot/lib/rustlib/riscv64gc-unknown-linux-gnu/lib/libadler_adler.rlib local_rustc_sysroot/lib/rustlib/riscv64gc-unknown-linux-gnu/lib/libobject_object.rlib local_rustc_sysroot/lib/rustlib/riscv64gc-unknown-linux-gnu/lib/libmemchr_memchr.rlib local_rustc_sysroot/lib/rustlib/riscv64gc-unknown-linux-gnu/lib/libgetopts_getopts.rlib local_rustc_sysroot/lib/rustlib/riscv64gc-unknown-linux-gnu/lib/librustc_std_workspace_std_rustc_std_workspace_std.rlib local_rustc_sysroot/lib/rustlib/riscv64gc-unknown-linux-gnu/lib/libunicode_width_unicode_width.rlib local_rustc_sysroot/lib/rustlib/riscv64gc-unknown-linux-gnu/lib/libtest_test.rlib obj/skia/libskia_cbridge_urust_uside.rlib obj/third_party/rust/font_types/v0_4/lib/libfont_types_lib.rlib obj/third_party/rust/read_fonts/v0_15/lib/libread_fonts_lib.rlib obj/third_party/rust/skrifa/v0_15/lib/libskrifa_lib.rlib obj/build/rust/chromium_prelude/libchromium.rlib obj/third_party/blink/common/rust_crash/libthird_uparty_sblink_scommon_srust_ucrash_crs.rlib obj/components/qr_code_generator/libcomponents_sqr_ucode_ugenerator_cqr_ucode_ugenerator_uffi_uglue.rlib obj/third_party/rust/qr_code/v2/lib/libqr_code_lib.rlib -Wl,--threads=1
Backtrace (gdb) bt full
#<!-- -->0 0x00005e038d28cf99 in llvm::support::endian::write<unsigned int, 1ul> (memory=0x753da8106000, value=0, endian=llvm::endianness::little) at /home/kxxt/Workspaces/llvm/llvm-project/llvm/include/llvm/Support/Endian.h:93
No locals.
#<!-- -->1 0x00005e038d28d0e6 in llvm::support::endian::write<unsigned int, (llvm::endianness)1, 1ul> (memory=0x753da8106000, value=0) at /home/kxxt/Workspaces/llvm/llvm-project/llvm/include/llvm/Support/Endian.h:102
No locals.
#<!-- -->2 0x00005e038d28d0be in llvm::support::detail::packed_endian_specific_integral<unsigned int, (llvm::endianness)1, 1ul, 1ul>::operator= (this=0x753da8106000, newValue=0)
at /home/kxxt/Workspaces/llvm/llvm-project/llvm/include/llvm/Support/Endian.h:216
No locals.
#<!-- -->3 0x00005e038d5ddd82 in lld::elf::SymbolTableSection<llvm::object::ELFType<(llvm::endianness)1, true> >::writeTo (this=0x5e043405bdb0, buf=0x753d62030170 "\001")
at /home/kxxt/Workspaces/llvm/llvm-project/lld/ELF/SyntheticSections.cpp:2230
sym = 0x5e05b30872d0
isDefinedHere = true
ent = @<!-- -->0x753dd6cc7470: {sym = 0x5e05b30872d0, strTabOffset = 0}
__for_range = @<!-- -->0x5e043405be58: {<llvm::SmallVectorImpl<lld::elf::SymbolTableEntry>> = {<llvm::SmallVectorTemplateBase<lld::elf::SymbolTableEntry, true>> = {<llvm::SmallVectorTemplateCommon<lld::elf::SymbolTableEntry, void>> = {<llvm::SmallVectorBase<unsigned int>> = {BeginX = 0x753da818e010, Size = 223895855, Capacity = 268435455}, <No data fields>},
static TakesParamByValue = true}, <No data fields>}, <llvm::SmallVectorStorage<lld::elf::SymbolTableEntry, 0>> = {<No data fields>}, <No data fields>}
__for_begin = 0x753dd6cc7470
__for_end = 0x753e7d9ef300
eSym = 0x753da8106000
#<!-- -->4 0x00005e038d56dcd1 in lld::elf::OutputSection::writeTo<llvm::object::ELFType<(llvm::endianness)1, true> >(unsigned char*, llvm::parallel::TaskGroup&)::{lambda(unsigned long, unsigned long)#<!-- -->1}::operator()(unsigned long, unsigned long) const (__closure=0x5e0942f41c70, begin=0, end=1) at /home/kxxt/Workspaces/llvm/llvm-project/lld/ELF/OutputSections.cpp:497
s = 0x5e043405bdb0
isec = 0x5e043405bdb8
i = 0
numSections = 1
filler = {_M_elems = "\000\000\000"}
nonZeroFiller = false
this = 0x5e043040b148
buf = 0x753d62030158 ""
sections = {Data = 0x5e0468d04240, Length = 1}
__PRETTY_FUNCTION__ = "lld::elf::OutputSection::writeTo<llvm::object::ELFType<llvm::endianness::little, true> >(uint8_t*, llvm::parallel::TaskGroup&)::<lambda(size_t, size_t)>"
#<!-- -->5 0x00005e038d56defb in lld::elf::OutputSection::writeTo<llvm::object::ELFType<(llvm::endianness)1, true> >(unsigned char*, llvm::parallel::TaskGroup&)::{lambda()#<!-- -->1}::operator()() const (__closure=0x5e0942f41c70)
at /home/kxxt/Workspaces/llvm/llvm-project/lld/ELF/OutputSections.cpp:547
i = 1
begin = 0
fn = {__sections = {Data = 0x5e0468d04240, Length = 1}, __buf = 0x753d62030158 "", __this = 0x5e043040b148, __nonZeroFiller = false, __filler = {_M_elems = "\000\000\000"}}
#<!-- -->6 0x00005e038d576d16 in std::__invoke_impl<void, lld::elf::OutputSection::writeTo<llvm::object::ELFType<(llvm::endianness)1, true> >(unsigned char*, llvm::parallel::TaskGroup&)::{lambda()#<!-- -->1}&>(std::__invoke_other, lld::elf::OutputSection::writeTo<llvm::object::ELFType<(llvm::endianness)1, true> >(unsigned char*, llvm::parallel::TaskGroup&)::{lambda()#<!-- -->1}&) (__f=...) at /usr/include/c++/13.2.1/bits/invoke.h:61
No locals.
#<!-- -->7 0x00005e038d57444e in std::__invoke_r<void, lld::elf::OutputSection::writeTo<llvm::object::ELFType<(llvm::endianness)1, true> >(unsigned char*, llvm::parallel::TaskGroup&)::{lambda()#<!-- -->1}&>(lld::elf::OutputSection::writeTo<llvm::object::ELFType<(llvm::endianness)1, true> >(unsigned char*, llvm::parallel::TaskGroup&)::{lambda()#<!-- -->1}&) (__fn=...) at /usr/include/c++/13.2.1/bits/invoke.h:111
No locals.
#<!-- -->8 0x00005e038d5729d5 in std::_Function_handler<void (), lld::elf::OutputSection::writeTo<llvm::object::ELFType<(llvm::endianness)1, true> >(unsigned char*, llvm::parallel::TaskGroup&)::{lambda()#<!-- -->1}>::_M_invoke(std::_Any_data const&)
(__functor=...) at /usr/include/c++/13.2.1/bits/std_function.h:290
No locals.
#<!-- -->9 0x00005e038d29eba8 in std::function<void ()>::operator()() const (this=0x7ffde3a5fdc0) at /usr/include/c++/13.2.1/bits/std_function.h:591
No locals.
#<!-- -->10 0x00005e0392ffa47d in llvm::parallel::TaskGroup::spawn(std::function<void ()>, bool) (this=0x7ffde3a5ff10, F=..., Sequential=false) at /home/kxxt/Workspaces/llvm/llvm-project/llvm/lib/Support/Parallel.cpp:221
No locals.
#<!-- -->11 0x00005e038d569179 in lld::elf::OutputSection::writeTo<llvm::object::ELFType<(llvm::endianness)1, true> > (this=0x5e043040b148, buf=0x753d62030158 "", tg=...)
at /home/kxxt/Workspaces/llvm/llvm-project/lld/ELF/OutputSections.cpp:547
done = true
begin = 0
i = 1
taskSize = 1078533248
--Type <RET> for more, q to quit, c to continue without paging--c
timeScope = {<No data fields>}
sections = {Data = 0x5e0468d04240, Length = 1}
filler = {_M_elems = "\000\000\000"}
nonZeroFiller = false
fn = {__sections = {Data = 0x5e0468d04240, Length = 1}, __buf = 0x753d62030158 "", __this = 0x5e043040b148, __nonZeroFiller = false, __filler = {_M_elems = "\000\000\000"}}
written = false
numSections = 1
taskSizeLimit = 4194304
#<!-- -->12 0x00005e038d669595 in (anonymous namespace)::Writer<llvm::object::ELFType<(llvm::endianness)1, true> >::writeSections (this=0x7ffde3a60150) at /home/kxxt/Workspaces/llvm/llvm-project/lld/ELF/Writer.cpp:3031
sec = 0x5e043040b148
__for_range = @<!-- -->0x5e0399805c60: {<llvm::SmallVectorImpl<lld::elf::OutputSection*>> = {<llvm::SmallVectorTemplateBase<lld::elf::OutputSection*, true>> = {<llvm::SmallVectorTemplateCommon<lld::elf::OutputSection*, void>> = {<llvm::SmallVectorBase<unsigned int>> = {BeginX = 0x5e046412f640, Size = 48, Capacity = 63}, <No data fields>},
static TakesParamByValue = true}, <No data fields>}, <llvm::SmallVectorStorage<lld::elf::OutputSection*, 0>> = {<No data fields>}, <No data fields>}
__for_begin = 0x5e046412f7a8
__for_end = 0x5e046412f7c0
tg = {L = {Count = 0, Mutex = {<std::__mutex_base> = {_M_mutex = {__data = {__lock = 0, __count = 0, __owner = 0, __nusers = 0, __kind = 0, __spins = 0, __elision = 0, __list = {__prev = 0x0, __next = 0x0}},
__size = '\000' <repeats 39 times>, __align = 0}}, <No data fields>}, Cond = {_M_cond = {_M_cond = {__data = {__wseq = {__value64 = 0, __value32 = {__low = 0, __high = 0}}, __g1_start = {__value64 = 0, __value32 = {
__low = 0, __high = 0}}, __g_refs = {0, 0}, __g_size = {0, 0}, __g1_orig_size = 0, __wrefs = 0, __g_signals = {0, 0}}, __size = '\000' <repeats 47 times>, __align = 0}}}}, Parallel = false}
timeScope = {<No data fields>}
#<!-- -->13 0x00005e038d65abf9 in (anonymous namespace)::Writer<llvm::object::ELFType<(llvm::endianness)1, true> >::run (this=0x7ffde3a60150) at /home/kxxt/Workspaces/llvm/llvm-project/lld/ELF/Writer.cpp:653
timeScope = {<No data fields>}
#<!-- -->14 0x00005e038d695871 in lld::elf::writeResult<llvm::object::ELFType<(llvm::endianness)1, true> > () at /home/kxxt/Workspaces/llvm/llvm-project/lld/ELF/Writer.cpp:99
No locals.
#<!-- -->15 0x00005e038d42c905 in lld::elf::LinkerDriver::link (this=0x5e03998057e0 <lld::elf::ctx>, args=...) at /home/kxxt/Workspaces/llvm/llvm-project/lld/ELF/Driver.cpp:3051
timeScope = {<No data fields>}
wrapped = std::vector of length 0, capacity 0
skipLinkedOutput = false
numObjsBeforeLTO = 158
newObjectFiles = {Data = 0x5e04e34d0690, Length = 34623}
#<!-- -->16 0x00005e038d41b635 in lld::elf::LinkerDriver::linkerMain (this=0x5e03998057e0 <lld::elf::ctx>, argsArr=...) at /home/kxxt/Workspaces/llvm/llvm-project/lld/ELF/Driver.cpp:652
timeScope = {<No data fields>}
parser = {<llvm::opt::GenericOptTable> = {<llvm::opt::OptTable> = {_vptr.OptTable = 0x5e0399363780 <vtable for lld::elf::ELFOptTable+16>, OptionInfos = {Data = 0x5e03993638e0 <optInfo>, Length = 404}, IgnoreCase = false,
GroupedShortOptions = false, DashDashParsing = false, EnvVar = 0x0, InputOptionID = 1, UnknownOptionID = 2, FirstSearchableIndex = 2,
PrefixChars = {<llvm::SmallVector<char, 8>> = {<llvm::SmallVectorImpl<char>> = {<llvm::SmallVectorTemplateBase<char, true>> = {<llvm::SmallVectorTemplateCommon<char, void>> = {<llvm::SmallVectorBase<unsigned long>> = {
BeginX = 0x7ffde3a60650, Size = 1, Capacity = 8}, <No data fields>}, static TakesParamByValue = true}, <No data fields>}, <llvm::SmallVectorStorage<char, 8>> = {
InlineElts = "-\006\246\343\375\177\000"}, <No data fields>}, <No data fields>}},
PrefixesUnionBuffer = {<llvm::SmallVectorImpl<llvm::StringLiteral>> = {<llvm::SmallVectorTemplateBase<llvm::StringLiteral, true>> = {<llvm::SmallVectorTemplateCommon<llvm::StringLiteral, void>> = {<llvm::SmallVectorBase<unsigned int>> = {BeginX = 0x7ffde3a60668, Size = 2, Capacity = 3}, <No data fields>}, static TakesParamByValue = true}, <No data fields>}, <llvm::SmallVectorStorage<llvm::StringLiteral, 3>> = {
InlineElts = "y\217\022\223\003^\000\000\001\000\000\000\000\000\000\000{\217\022\223\003^\000\000\002", '\000' <repeats 15 times>, "\320\006\246\343\375\177\000"}, <No data fields>}}, <No data fields>}
args = {<llvm::opt::ArgList> = {_vptr.ArgList = 0x5e0399380140 <vtable for llvm::opt::InputArgList+16>,
Args = {<llvm::SmallVectorImpl<llvm::opt::Arg*>> = {<llvm::SmallVectorTemplateBase<llvm::opt::Arg*, true>> = {<llvm::SmallVectorTemplateCommon<llvm::opt::Arg*, void>> = {<llvm::SmallVectorBase<unsigned int>> = {
BeginX = 0x754d62260010, Size = 14274, Capacity = 17407}, <No data fields>}, static TakesParamByValue = true}, <No data fields>}, <llvm::SmallVectorStorage<llvm::opt::Arg*, 16>> = {
InlineElts = "\300]\023\233\003^\000\000\000\000\000\000\000\000\000\000\360\006\246\343\375\177\000\000\000\a\246\343\375\177\000\000\367&F\215\003^\000\000@<!-- -->_\200\231\003^\000\000p\304\023\233\003^", '\000' <repeats 18 times>, "@\a\246\343\375\177", '\000' <repeats 18 times>, "@<!-- -->_\200\231\003^\000\000@\a\246\343\375\177\000\000\324\031F\215\003^\000\000@<!-- -->_\200\231\003^\000"}, <No data fields>},
OptRanges = {<llvm::DenseMapBase<llvm::DenseMap<unsigned int, std::pair<unsigned int, unsigned int>, llvm::DenseMapInfo<unsigned int, void>, llvm::detail::DenseMapPair<unsigned int, std::pair<unsigned int, unsigned int> > >, unsigned int, std::pair<unsigned int, unsigned int>, llvm::DenseMapInfo<unsigned int, void>, llvm::detail::DenseMapPair<unsigned int, std::pair<unsigned int, unsigned int> > >> = {<llvm::DebugEpochBase> = {
Epoch = 2}, <No data fields>}, Buckets = 0x5e039b13bc50, NumEntries = 35, NumTombstones = 0, NumBuckets = 64}},
ArgStrings = {<llvm::SmallVectorImpl<char const*>> = {<llvm::SmallVectorTemplateBase<char const*, true>> = {<llvm::SmallVectorTemplateCommon<char const*, void>> = {<llvm::SmallVectorBase<unsigned int>> = {
BeginX = 0x754d61ac9010, Size = 14293, Capacity = 28571}, <No data fields>}, static TakesParamByValue = true}, <No data fields>}, <llvm::SmallVectorStorage<char const*, 16>> = {
InlineElts = "\274%\246\343\375\177\000\000\260\a\246\343\375\177\000\000,CE\215\003^\000\000\001\000\000\000\000\000\000\000\330\a\246\343\375\177\000\000\260\303\023\233\003^\000\000\260\303\023\233\003^\000\000\260\303\023\233\003^\000\000\340\a\246\343\375\177\000\000\360\a\246\343\375\177\000\000ҔD\215\003^\000\000\000\000\000\000\000\000\000\000@<!-- -->_\200\231\003^\000\000@<!-- -->_\200\231\003^\000\000p\304\023\233\003^\000\000\260\303\023\233\003^\000"}, <No data fields>}, SynthesizedStrings = std::__cxx11::list = {[0] = "--sysroot", [1] = "--hash-style", [2] = "--discard-locals", [3] = "--version-script", [4] = "--color-diagnostics=", [5] = "--thinlto-cache-policy",
[6] = "--call-graph-profile-sort=", [7] = "--threads"}, NumInputArgStrings = 14285}
#<!-- -->17 0x00005e038d417493 in lld::elf::link (args=..., stdoutOS=..., stderrOS=..., exitEarly=true, disableOutput=false) at /home/kxxt/Workspaces/llvm/llvm-project/lld/ELF/Driver.cpp:162
ctx = 0x5e039b135e20
#<!-- -->18 0x00005e038d29af55 in lld::unsafeLldMain (args=..., stdoutOS=..., stderrOS=..., drivers=..., exitEarly=true) at /home/kxxt/Workspaces/llvm/llvm-project/lld/Common/DriverDispatcher.cpp:163
argsV = {<llvm::SmallVectorImpl<char const*>> = {<llvm::SmallVectorTemplateBase<char const*, true>> = {<llvm::SmallVectorTemplateCommon<char const*, void>> = {<llvm::SmallVectorBase<unsigned int>> = {BeginX = 0x7ffde3a60f00,
Size = 2, Capacity = 256}, <No data fields>}, static TakesParamByValue = true}, <No data fields>}, <llvm::SmallVectorStorage<char const*, 256>> = {
InlineElts = "}%\246\343\375\177\000\000\274%\246\343\375\177\000\0000\223\352aMu\000\000X\223\352aMu", '\000' <repeats 130 times>, "_\205s\227\003^\000\000\a\000\000\000\000\000\000\000g\205s\227\003^\000\000\016\000\000\000\000\000\000\000\000\000\000\361\000\000\000\000"...}, <No data fields>}
d = 0x5e038d417209 <lld::elf::link(llvm::ArrayRef<char const*>, llvm::raw_ostream&, llvm::raw_ostream&, bool, bool)>
r = 0
#<!-- -->19 0x00005e038d17871c in lld_main (argc=2, argv=0x7ffde3a61a38) at /home/kxxt/Workspaces/llvm/llvm-project/lld/tools/lld/lld.cpp:90
r = 0
args = {Data = 0x7ffde3a61a38, Length = 2}
mainRet = std::optional = {[contained value] = -475653576}
#<!-- -->20 0x00005e038d17b730 in main (argc=2, argv=0x7ffde3a61a38) at /home/kxxt/Workspaces/llvm/llvm-project/build-debug/tools/lld/tools/lld/lld-driver.cpp:17
X = {
Alloc = {<llvm::AllocatorBase<llvm::BumpPtrAllocatorImpl<llvm::MallocAllocator, 4096, 4096, 128> >> = {<No data fields>}, <llvm::detail::AllocatorHolder<llvm::MallocAllocator>> = {<llvm::MallocAllocator> = {<llvm::AllocatorBase<llvm::MallocAllocator>> = {<No data fields>}, <No data fields>}, <No data fields>}, CurPtr = 0x0, End = 0x0,
Slabs = {<llvm::SmallVectorImpl<void*>> = {<llvm::SmallVectorTemplateBase<void*, true>> = {<llvm::SmallVectorTemplateCommon<void*, void>> = {<llvm::SmallVectorBase<unsigned int>> = {BeginX = 0x7ffde3a61890, Size = 0,
Capacity = 4}, <No data fields>}, static TakesParamByValue = true}, <No data fields>}, <llvm::SmallVectorStorage<void*, 4>> = {
InlineElts = "\340b\242\231\003^\000\000\260\322\r\233\003^\000\000\220\030\246\343\375\177\000\000\260\322\r\233\003^\000"}, <No data fields>},
CustomSizedSlabs = {<llvm::SmallVectorImpl<std::pair<void*, unsigned long> >> = {<llvm::SmallVectorTemplateBase<std::pair<void*, unsigned long>, true>> = {<llvm::SmallVectorTemplateCommon<std::pair<void*, unsigned long>, void>> = {<llvm::SmallVectorBase<unsigned int>> = {BeginX = 0x7ffde3a618c0, Size = 0, Capacity = 0}, <No data fields>},
static TakesParamByValue = true}, <No data fields>}, <llvm::SmallVectorStorage<std::pair<void*, unsigned long>, 0>> = {<No data fields>}, <No data fields>}, BytesAllocated = 0, RedZoneSize = 1},
Args = {<llvm::SmallVectorImpl<char const*>> = {<llvm::SmallVectorTemplateBase<char const*, true>> = {<llvm::SmallVectorTemplateCommon<char const*, void>> = {<llvm::SmallVectorBase<unsigned int>> = {BeginX = 0x7ffde3a618e0,
Size = 0, Capacity = 0}, <No data fields>}, static TakesParamByValue = true}, <No data fields>}, <llvm::SmallVectorStorage<char const*, 0>> = {<No data fields>}, <No data fields>}, StackPrinter = std::optional = {
[contained value] = {<llvm::PrettyStackTraceEntry> = {_vptr.PrettyStackTraceEntry = 0x5e039935c010 <vtable for llvm::PrettyStackTraceProgram+16>, NextEntry = 0x0}, ArgC = 2, ArgV = 0x7ffde3a61a38}}}
(gdb) p buf
$19 = (uint8_t *) 0x753d62030170 "\001"
(gdb) p eSym
$20 = (llvm::object::Elf_Sym_Impl<llvm::object::ELFType<(llvm::endianness)1, true> > *) 0x753da8106000
(gdb) p *eSym
Cannot access memory at address 0x753da8106000
I understand that it can't be easily reproduced as cross-compiling chromium to riscv64 requries lots of patches and building chromium takes a lot of time. So please ask me for more information if the above backtrace is not sufficient for tracing down the bug. |
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Can you relink the executable using the environment variable |
Yes. The linker haven't finished but the size of the uncompressed tarball is already 21GB. I am uncertain where I could upload it. BTW is there any way to generate a smaller reproduce tarball? |
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@MaskRay I have uploaded the zstd compressed reproduce tarball to github: https://github.com/kxxt/lld-79944-reproducer/releases/tag/original . It is |
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This issue also occurs when ThinLTO is disabled. With ThinLTO disabled, linking with riscv64-linux-gnu-ld also results in a segfault. So gnu bfd linker might also be affected by the same bug. |
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I have the same problem. Have you solved it? |
Nope. |
The link succeeded with the latest lld :) cat repro.tar.zst.aa repro.tar.zst.ab repro.tar.zst.ac | tar -I zstd -x
cd lld-repro
/tmp/Rel/bin/ld.lld @reponse.txt |
I have a similar problem: #100511. Can you help me take a look? |
Yes. I could also confirm it. Cross compiling chromium 126.0.6478.185 for riscv64 using Do you happen to know the commit that fixes this bug? I suspect bfd linker is also affected but haven't checked it on chromium 126.0.6478.185. |
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Hi, I encountered a segfault in lld when cross-compiling chromium from x86_64 host to riscv64.
Initially I used
clang version 18.0.0git (https://chromium.googlesource.com/external/github.com/llvm/llvm-project c4146121e940b6b853148c780568dee38b97382f).Later I tried
clang version 18.1.0rc (https://github.com/llvm/llvm-project.git bab01aead7d7a34436bc8e1639b90227374f079e).The failing command is
Backtrace
I understand that it can't be easily reproduced as cross-compiling chromium to riscv64 requries lots of patches and building chromium takes a lot of time. So please ask me for more information if the above backtrace is not sufficient for tracing down the bug.
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