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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org> To: glibc-bugs@sourceware.org Subject: [Bug dynamic-link/31640] New: POWER10 ld.so crashes in elf_machine_load_address with GCC 14 Date: Sat, 13 Apr 2024 12:10:58 +0000 [thread overview] Message-ID: <bug-31640-131@http.sourceware.org/bugzilla/> (raw) https://sourceware.org/bugzilla/show_bug.cgi?id=31640 Bug ID: 31640 Summary: POWER10 ld.so crashes in elf_machine_load_address with GCC 14 Product: glibc Version: 2.40 Status: NEW Severity: normal Priority: P2 Component: dynamic-link Assignee: fweimer at redhat dot com Reporter: fweimer at redhat dot com CC: bergner at linux dot ibm.com Target Milestone: --- Target: powerpc64le-linux-gnu When built with GCC 14, ld.so crashes in elf_machine_load_address because the current implementation assumes that r2 still has the kernel-provided value: static inline Elf64_Addr elf_machine_load_address (void) { Elf64_Addr ret; /* The first entry in .got (and thus the first entry in .toc) is the link-time TOC_base, ie. r2. So the difference between that and the current r2 set by the kernel is how far the shared lib has moved. */ asm ( " ld %0,-32768(2)\n" " subf %0,%0,2\n" : "=r" (ret)); return ret; } I don't think that's necessarily true in PCREL mode, so this is a glibc bug. -- You are receiving this mail because: You are on the CC list for the bug.
next reply other threads:[~2024-04-13 12:10 UTC|newest] Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-04-13 12:10 fweimer at redhat dot com [this message] 2024-04-13 12:11 ` [Bug dynamic-link/31640] " fweimer at redhat dot com 2024-04-14 9:50 ` fweimer at redhat dot com
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