1be8b22f48
When building iputils for powerpc with BR2_PIC_PIE enabled, the arping/rdisc/tftpd binaries will segfault at runtime. This can be traced back to a few bugs in patchelf corrupting the ELFs when resizing the RPATH to replace "$ORIGIN/" with "/usr/sbin". This patch pulls in upstream fixes to prevent the binaries from being needlessly inflated, prevent the startPage from always being adjusted, fix a few minor bugs, and fix incorrect endianness handling. Signed-off-by: Conrad Ratschan <conrad.ratschan@rockwellcollins.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
56 lines
2 KiB
Diff
56 lines
2 KiB
Diff
From 5df4791bf077127684faceeeea8bfab063e43774 Mon Sep 17 00:00:00 2001
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From: Richard Purdie <richard.purdie@linuxfoundation.org>
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Date: Wed, 3 Jun 2020 12:14:58 +0100
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Subject: [PATCH] Fix shared library corruption when rerunning patchelf
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When running patchelf on some existing patchelf'd binaries to change to longer
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RPATHS, ldd would report the binaries as invalid. The output of objdump -x on
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those libraryies should show the top of the .dynamic section is getting trashed,
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something like:
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0x600000001 0x0000000000429000
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0x335000 0x0000000000335000
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0xc740 0x000000000000c740
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0x1000 0x0000000000009098
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SONAME libglib-2.0.so.0
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(which should be RPATH and DT_NEEDED entries)
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This was tracked down to the code which injects the PT_LOAD section.
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The issue is that if the program headers were previously relocated to the end
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of the file which was how patchelf operated previously, the relocation code
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wouldn't work properly on a second run as it now assumes they're located after
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the elf header. This change forces them back to immediately follow the elf
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header which is where the code has made space for them.
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Should fix https://github.com/NixOS/patchelf/issues/170
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and https://github.com/NixOS/patchelf/issues/192
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Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Fetch from: https://github.com/NixOS/patchelf/commit/ad5f1f078b716802dfb8f7226cb1d5c720348a78
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Backported to v0.9
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Signed-off-by: Conrad Ratschan <conrad.ratschan@rockwellcollins.com>
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---
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src/patchelf.cc | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/src/patchelf.cc b/src/patchelf.cc
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index c2147af..1224a89 100644
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--- a/src/patchelf.cc
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+++ b/src/patchelf.cc
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@@ -706,6 +706,7 @@ void ElfFile<ElfFileParamNames>::rewriteSectionsLibrary()
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/* Add a segment that maps the replaced sections into memory. */
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+ wri(hdr->e_phoff, sizeof(Elf_Ehdr));
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phdrs.resize(rdi(hdr->e_phnum) + 1);
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wri(hdr->e_phnum, rdi(hdr->e_phnum) + 1);
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Elf_Phdr & phdr = phdrs[rdi(hdr->e_phnum) - 1];
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--
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2.17.1
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