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Message-ID: <CANp29Y4FmGDXm3LWvW6D+JR8CWf=fvuiAseFb1h2HQSDjFKO2A@mail.gmail.com> Date: Mon, 14 Apr 2025 16:11:15 +0200 From: Aleksandr Nogikh <nogikh@...gle.com> To: llvm@...ts.linux.dev, LKML <linux-kernel@...r.kernel.org> Cc: syzkaller <syzkaller@...glegroups.com>, Dmitry Vyukov <dvyukov@...gle.com>, Alexander Potapenko <glider@...gle.com> Subject: Latest clang versions fail to compile CONFIG_X86_X32_ABI=y Hi, I've been trying to build a Linux kernel using newer llvm toolchain versions (18, 19, 20), but it consistently fails with the following errors: ld.lld: error: arch/x86/entry/vdso/vgetrandom-x32.o:(.note.gnu.property+0x0): data is too short ld.lld: error: arch/x86/entry/vdso/vgetcpu-x32.o:(.note.gnu.property+0x0): data is too short ld.lld: error: arch/x86/entry/vdso/vclock_gettime-x32.o:(.note.gnu.property+0x0): data is too short The steps to reproduce: $ git checkout v6.15-rc2 $ make defconfig $ ./scripts/config -e X86_X32_ABI $ make CC=clang LD=ld.lld -j48 The versions used: $ clang --version Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97) $ ld.lld --version Debian LLD 20.1.2 (compatible with GNU linkers) Is this a known clang/Linux issue? There's a kernel commit that addresses a similar problem: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=aaeed6ecc1253ce1463fa1aca0b70a4ccbc9fa75 but the error is slightly different there and the added Kconfig condition apparently did not kick in. -- Aleksandr
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