fix: nvidia library resolution on merged-lib guests (e.g. Arch)#2014
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RomeoV wants to merge 1 commit into89luca89:mainfrom
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fix: nvidia library resolution on merged-lib guests (e.g. Arch)#2014RomeoV wants to merge 1 commit into89luca89:mainfrom
RomeoV wants to merge 1 commit into89luca89:mainfrom
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On guests where /usr/lib64 is a symlink to /usr/lib (Arch Linux, etc.), the nvidia init would mount 32-bit host libraries from /usr/lib/ into /usr/lib/, then skip the 64-bit libraries from /usr/lib64/ because the destination path already existed. This caused `nvidia-smi` and other 64-bit nvidia tools to fail with "incompatible ELF class". Two changes fix this: 1. Only set lib64_dir="/usr/lib64/" when /usr/lib64 is a real directory, not a symlink. This avoids treating a merged-lib guest as split-lib. 2. Search host lib directories in lib64-first order so that 64-bit libraries are mounted before their 32-bit counterparts. The existing "file exists" check then correctly skips the 32-bit duplicates. Reproducer: Bazzite (Fedora immutable) host + Arch Linux distrobox with --nvidia flag. Bazzite ships 32-bit nvidia libs in /usr/lib/ for Steam/Proton compatibility, while Arch expects 64-bit libs there. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
nvidia-smi(and other 64-bit nvidia tools) failing withincompatible ELF classinside Arch Linux distroboxes on Fedora/Bazzite hosts with--nvidia/usr/lib/and 64-bit in/usr/lib64/, but Arch has/usr/lib64→/usr/lib(merged-lib layout), so both map to the same directory and the 32-bit versions win/usr/lib64as a separate directory when it's a symlink, (2) search hostlib64beforelibso 64-bit libs are mounted first and the existing "file exists" check skips 32-bit duplicatesReproducer
Root cause visible with
LD_DEBUG:The file at
/usr/lib/libnvidia-ml.so.1is 32-bit (from host's/usr/lib/) whilenvidia-smiis 64-bit.Test plan
nvidia-smiworks in Arch distrobox on Fedora/Bazzite host with--nvidia/usr/lib64/directory)x86_64-linux-gnulayout)🤖 Generated with Claude Code