Treat relocs against IFUNC symbols in note sections as relocs against the FUNC symbol instead.
Relates: #1552056
This commit is contained in:
Nick Clifton
parent
d88807d21a
commit
871bf81821
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@ -0,0 +1,107 @@
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diff -rup binutils.orig/bfd/elf32-i386.c binutils-2.30/bfd/elf32-i386.c
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--- binutils.orig/bfd/elf32-i386.c 2018-02-27 17:25:53.961140597 +0000
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+++ binutils-2.30/bfd/elf32-i386.c 2018-02-27 17:27:14.115133477 +0000
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@@ -383,7 +383,7 @@ elf_i386_rtype_to_howto (bfd *abfd, unsi
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/* xgettext:c-format */
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_bfd_error_handler (_("%B: invalid relocation type %d"),
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abfd, (int) r_type);
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- indx = R_386_NONE;
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+ return NULL;
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}
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/* PR 17512: file: 0f67f69d. */
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if (elf_howto_table [indx].type != r_type)
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diff -rup binutils.orig/bfd/elf64-ppc.c binutils-2.30/bfd/elf64-ppc.c
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--- binutils.orig/bfd/elf64-ppc.c 2018-02-27 17:25:53.969140496 +0000
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+++ binutils-2.30/bfd/elf64-ppc.c 2018-02-27 17:27:56.213604518 +0000
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@@ -2516,9 +2516,10 @@ ppc64_elf_info_to_howto (bfd *abfd, arel
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/* xgettext:c-format */
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_bfd_error_handler (_("%B: invalid relocation type %d"),
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abfd, (int) type);
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- type = R_PPC64_NONE;
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+ cache_ptr->howto = NULL;
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}
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- cache_ptr->howto = ppc64_elf_howto_table[type];
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+ else
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+ cache_ptr->howto = ppc64_elf_howto_table[type];
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}
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/* Handle the R_PPC64_ADDR16_HA and similar relocs. */
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diff -rup binutils.orig/bfd/elf64-s390.c binutils-2.30/bfd/elf64-s390.c
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--- binutils.orig/bfd/elf64-s390.c 2018-02-27 17:25:53.968140509 +0000
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+++ binutils-2.30/bfd/elf64-s390.c 2018-02-27 17:28:24.632247443 +0000
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@@ -372,9 +372,10 @@ elf_s390_info_to_howto (bfd *abfd ATTRIB
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/* xgettext:c-format */
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_bfd_error_handler (_("%B: invalid relocation type %d"),
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abfd, (int) r_type);
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- r_type = R_390_NONE;
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+ cache_ptr->howto = NULL;
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}
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- cache_ptr->howto = &elf_howto_table[r_type];
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+ else
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+ cache_ptr->howto = &elf_howto_table[r_type];
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}
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}
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diff -rup binutils.orig/bfd/elf64-x86-64.c binutils-2.30/bfd/elf64-x86-64.c
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--- binutils.orig/bfd/elf64-x86-64.c 2018-02-27 17:25:53.964140559 +0000
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+++ binutils-2.30/bfd/elf64-x86-64.c 2018-02-27 17:29:12.554645307 +0000
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@@ -284,7 +284,7 @@ elf_x86_64_rtype_to_howto (bfd *abfd, un
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/* xgettext:c-format */
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_bfd_error_handler (_("%B: invalid relocation type %d"),
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abfd, (int) r_type);
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- r_type = R_X86_64_NONE;
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+ return NULL;
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}
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i = r_type;
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}
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@@ -347,8 +347,6 @@ elf_x86_64_info_to_howto (bfd *abfd ATTR
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&& r_type != (unsigned int) R_X86_64_GNU_VTENTRY)
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r_type &= ~R_X86_64_converted_reloc_bit;
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cache_ptr->howto = elf_x86_64_rtype_to_howto (abfd, r_type);
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-
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- BFD_ASSERT (r_type == cache_ptr->howto->type || cache_ptr->howto->type == R_X86_64_NONE);
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}
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/* Support for core dump NOTE sections. */
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diff -rup binutils.orig/bfd/elfcode.h binutils-2.30/bfd/elfcode.h
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--- binutils.orig/bfd/elfcode.h 2018-02-27 17:25:53.964140559 +0000
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+++ binutils-2.30/bfd/elfcode.h 2018-02-27 17:26:57.234345581 +0000
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@@ -1474,6 +1474,12 @@ elf_slurp_reloc_table_from_section (bfd
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(*ebd->elf_info_to_howto) (abfd, relent, &rela);
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else
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(*ebd->elf_info_to_howto_rel) (abfd, relent, &rela);
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+
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+ if (relent->howto == NULL)
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+ {
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+ bfd_set_error (bfd_error_bad_value);
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+ goto error_return;
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+ }
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}
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if (allocated != NULL)
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diff -rup binutils.orig/binutils/objcopy.c binutils-2.30/binutils/objcopy.c
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--- binutils.orig/binutils/objcopy.c 2018-02-27 17:25:53.185150347 +0000
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+++ binutils-2.30/binutils/objcopy.c 2018-02-27 17:30:05.806976202 +0000
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@@ -3022,10 +3022,19 @@ copy_object (bfd *ibfd, bfd *obfd, const
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haven't been set yet. mark_symbols_used_in_relocations will
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ignore input sections which have no corresponding output
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section. */
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+ bfd_set_error (bfd_error_no_error);
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if (strip_symbols != STRIP_ALL)
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- bfd_map_over_sections (ibfd,
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- mark_symbols_used_in_relocations,
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- isympp);
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+ {
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+ bfd_map_over_sections (ibfd,
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+ mark_symbols_used_in_relocations,
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+ isympp);
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+ if (bfd_get_error () != bfd_error_no_error)
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+ {
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+ status = 1;
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+ return FALSE;
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+ }
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+ }
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+
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osympp = (asymbol **) xmalloc ((symcount + add_symbols + 1) * sizeof (asymbol *));
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symcount = filter_symbols (ibfd, obfd, osympp, isympp, symcount);
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}
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@ -0,0 +1,64 @@
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diff -rup binutils.orig/bfd/elf32-i386.c binutils-2.30/bfd/elf32-i386.c
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--- binutils.orig/bfd/elf32-i386.c 2018-03-07 14:17:57.645689834 +0000
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+++ binutils-2.30/bfd/elf32-i386.c 2018-03-07 14:22:39.987385632 +0000
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@@ -2202,12 +2202,19 @@ elf_i386_relocate_section (bfd *output_b
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if ((input_section->flags & SEC_ALLOC) == 0)
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{
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+ /* If this is a SHT_NOTE section without SHF_ALLOC, treat
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+ STT_GNU_IFUNC symbol as STT_FUNC. */
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+ if (elf_section_type (input_section) == SHT_NOTE)
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+ goto skip_ifunc;
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/* Dynamic relocs are not propagated for SEC_DEBUGGING
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sections because such sections are not SEC_ALLOC and
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thus ld.so will not process them. */
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if ((input_section->flags & SEC_DEBUGGING) != 0)
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continue;
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- abort ();
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+ _bfd_error_handler (_("%B: error: relocation againt ifunc symbol in non-alloc section %A"),
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+ input_bfd, input_section);
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+ bfd_set_error (bfd_error_invalid_operation);
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+ return FALSE;
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}
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/* STT_GNU_IFUNC symbol must go through PLT. */
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@@ -2421,6 +2428,7 @@ do_ifunc_pointer:
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}
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}
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+ skip_ifunc:
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resolved_to_zero = (eh != NULL
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&& UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh));
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diff -rup binutils.orig/bfd/elf64-x86-64.c binutils-2.30/bfd/elf64-x86-64.c
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--- binutils.orig/bfd/elf64-x86-64.c 2018-03-07 14:17:57.691689296 +0000
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+++ binutils-2.30/bfd/elf64-x86-64.c 2018-03-07 14:22:33.907456784 +0000
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@@ -2499,12 +2499,19 @@ elf_x86_64_relocate_section (bfd *output
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if ((input_section->flags & SEC_ALLOC) == 0)
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{
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+ /* If this is a SHT_NOTE section without SHF_ALLOC, treat
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+ STT_GNU_IFUNC symbol as STT_FUNC. */
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+ if (elf_section_type (input_section) == SHT_NOTE)
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+ goto skip_ifunc;
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/* Dynamic relocs are not propagated for SEC_DEBUGGING
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sections because such sections are not SEC_ALLOC and
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thus ld.so will not process them. */
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if ((input_section->flags & SEC_DEBUGGING) != 0)
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continue;
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- abort ();
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+ _bfd_error_handler (_("%B: error: relocation againt ifunc symbol in non-alloc section %A"),
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+ input_bfd, input_section);
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+ bfd_set_error (bfd_error_invalid_operation);
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+ return FALSE;
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}
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switch (r_type)
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@@ -2722,6 +2729,7 @@ do_ifunc_pointer:
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}
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}
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+ skip_ifunc:
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resolved_to_zero = (eh != NULL
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&& UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh));
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@ -62,7 +62,7 @@
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Summary: A GNU collection of binary utilities
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Name: %{?cross}binutils%{?_with_debug:-debug}
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Version: 2.30
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Release: 8%{?dist}
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Release: 10%{?dist}
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License: GPLv3+
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Group: Development/Tools
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URL: https://sourceware.org/binutils
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@ -159,20 +159,30 @@ Patch11: binutils-skip-dwo-search-if-not-needed.patch
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# Lifetime: Fixed in 2.30.1 and/or 2.31.
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Patch12: binutils-page-to-segment-assignment.patch
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# Purpose: Fix a bug in ld for linking against AARCH64 UEFI
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# Purpose: Fix a bug in ld for linking against AARCH64 UEFI
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# Lifetime: Fixed in 2.30.1 and/or 2.31
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Patch13: binutils-2.30-allow_R_AARCH64-symbols.patch
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# Purpose: Stop strip from replacing unknown relocs with null relocs. Make
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# it return an error status and not strip the file instead.
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# Lifetime: Fixed in 2.31.
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Patch14: binutils-strip-unknown-relocs.patch
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# Purpose: Improves objdump's function for locating a symbol to match a
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# given address, so that it uses a binary chop algorithm.
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# Lifetime: Fixed in 2.31.
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Patch14: binutils-speed-up-objdump.patch
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Patch15: binutils-speed-up-objdump.patch
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# Purpose: Ignore duplicate indirect symbols generated by GOLD.
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# Lifetime: Permanent.
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# FIXME: This problem needs to be resolved in the FSF sources, but the
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# GOLD maintainers seem to be reluctant to address the issue.
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Patch15: binutils-2.28-ignore-gold-duplicates.patch
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Patch16: binutils-2.28-ignore-gold-duplicates.patch
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# Purpose: Treat relosc against STT_GNU_IFUNC symbols in note sections as
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# if they were relocs against STT_FUNC symbols instead.
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# Lifetime: Fixed in 2.31.
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Patch17: binutils-x86_64-ifunc-relocs-in-notes.patch
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#----------------------------------------------------------------------------
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@ -314,6 +324,8 @@ using libelf instead of BFD.
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%patch13 -p1
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%patch14 -p1
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%patch15 -p1
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%patch16 -p1
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%patch17 -p1
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# We cannot run autotools as there is an exact requirement of autoconf-2.59.
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@ -722,6 +734,12 @@ exit 0
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#----------------------------------------------------------------------------
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%changelog
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* Wed Mar 07 2018 Nick Clifton <nickc@redhat.com> 2.30-10
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- Treat relocs against IFUNC symbols in note sections as relocs against the FUNC symbol instead. (#1552056)
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* Wed Mar 07 2018 Nick Clifton <nickc@redhat.com> 2.30-9
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- Stop strip from replacing unknown relocs with null relocs. (#1545386)
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* Wed Mar 07 2018 Nick Clifton <nickc@redhat.com> 2.30-8
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- Ignore duplicate symbols generated by GOLD. (#1458003)
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