Dear Maintainer, llvm-objdump-21 segfaults when I attempt to extract the offload sections from an object file, rocsparse_axpyi.cpp.o. This object file was created by building rocSPARSE 7.1.0 with --offload-compress enabled. A copy of the object file is included in the upstream bug report. The problem occurs with both the upstream LLVM and the Debian package. ``` # LLVM_SYMBOLIZER_PATH=/usr/lib/llvm-21/bin/llvm-symbolizer llvm-objdump-21 --offloading rocsparse_axpyi.cpp.o rocsparse_axpyi.cpp.o: file format elf64-x86-64 PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace. Stack dump: 0. Program arguments: llvm-objdump-21 --offloading rocsparse_axpyi.cpp.o #0 0x00007f6c4a82506a llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/usr/lib/llvm-21/bin/../lib/libLLVM.so.21.1+0x45df06a) #1 0x00007f6c4a822857 llvm::sys::RunSignalHandlers() (/usr/lib/llvm-21/bin/../lib/libLLVM.so.21.1+0x45dc857) #2 0x00007f6c4a825e14 (/usr/lib/llvm-21/bin/../lib/libLLVM.so.21.1+0x45dfe14) #3 0x00007f6c45bf0a70 (/usr/lib/x86_64-linux-gnu/libc.so.6+0x40a70) #4 0x00007f6c45d30830 (/usr/lib/x86_64-linux-gnu/libc.so.6+0x180830) #5 0x000055f8448e16c0 (/usr/lib/llvm-21/bin/llvm-objdump+0xc46c0) #6 0x000055f8448e0c2e (/usr/lib/llvm-21/bin/llvm-objdump+0xc3c2e) #7 0x000055f84485e965 (/usr/lib/llvm-21/bin/llvm-objdump+0x41965) #8 0x000055f844853ff9 (/usr/lib/llvm-21/bin/llvm-objdump+0x36ff9) #9 0x000055f8448eb89a (/usr/lib/llvm-21/bin/llvm-objdump+0xce89a) #10 0x00007f6c45bd9f75 (/usr/lib/x86_64-linux-gnu/libc.so.6+0x29f75) #11 0x00007f6c45bda027 __libc_start_main (/usr/lib/x86_64-linux-gnu/libc.so.6+0x2a027) #12 0x000055f84484afe1 (/usr/lib/llvm-21/bin/llvm-objdump+0x2dfe1) Segmentation fault (core dumped) LLVM_SYMBOLIZER_PATH=/usr/lib/llvm-21/bin/llvm-symbolizer llvm-objdump-21 --offloading rocsparse_axpyi.cpp.o ``` It's noteworthy that this does not occur with llvm-22: ``` # llvm-objdump-22 --offloading rocsparse_axpyi.cpp.o rocsparse_axpyi.cpp.o: file format elf64-x86-64 Extracting offload bundle: rocsparse_axpyi.cpp.o.0.host-x86_64-unknown-linux-gnu- Extracting offload bundle: rocsparse_axpyi.cpp.o.0.hipv4-amdgcn-amd-amdhsa--gfx1010 Extracting offload bundle: rocsparse_axpyi.cpp.o.0.hipv4-amdgcn-amd-amdhsa--gfx1030 Extracting offload bundle: rocsparse_axpyi.cpp.o.0.hipv4-amdgcn-amd-amdhsa--gfx1100 Extracting offload bundle: rocsparse_axpyi.cpp.o.0.hipv4-amdgcn-amd-amdhsa--gfx1101 Extracting offload bundle: rocsparse_axpyi.cpp.o.0.hipv4-amdgcn-amd-amdhsa--gfx1102 Extracting offload bundle: rocsparse_axpyi.cpp.o.0.hipv4-amdgcn-amd-amdhsa--gfx803 Extracting offload bundle: rocsparse_axpyi.cpp.o.0.hipv4-amdgcn-amd-amdhsa--gfx900 Extracting offload bundle: rocsparse_axpyi.cpp.o.0.hipv4-amdgcn-amd-amdhsa--gfx906 Extracting offload bundle: rocsparse_axpyi.cpp.o.0.hipv4-amdgcn-amd-amdhsa--gfx908 Extracting offload bundle: rocsparse_axpyi.cpp.o.0.hipv4-amdgcn-amd-amdhsa--gfx90a ``` I suspect that the problem is related to uncompressing the offload bundles as there is a different error when operating on a shared object library. The log below is based on the upstream objdump, but I've seen the same results with the Debian package. ``` # /root/LLVM-21.1.8-Linux-X64/bin/llvm-objdump --offloading ./obj-x86_64-linux-gnu/library/librocsparse.so.1.0 ./obj-x86_64-linux-gnu/library/librocsparse.so.1.0: file format elf64-x86-64 /root/LLVM-21.1.8-Linux-X64/bin/llvm-objdump: error: './obj-x86_64-linux-gnu/library/librocsparse.so.1.0': while extracting offload FatBin bundles: Failed to decompress input: Could not decompress embedded file contents: Src size is incorrect ``` Sincerely, Cory Bloor