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https://sourceware.org/git/binutils-gdb.git
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8efa2874ab
To load an ELF binary with DT_TEXTREL tag, the dynamic linker calls __mprotect on the read-only segment with PROT_READ|PROT_WRITE before applying dynamic relocation. It leads to segfault when performing IFUNC relocations since the read-only segment has no execute permission. This patch changes x86 linker to issue an error for read-only segment with dynamic IFUNC relocations. Other backends with IFUNC support may need a similar change. bfd/ PR ld/18801 * elf32-i386.c (elf_i386_size_dynamic_sections): Issue an error for read-only segment with dynamic IFUNC relocations. * elf64-x86-64.c (elf_x86_64_size_dynamic_sections): Likewise. ld/testsuite/ PR ld/18801 * ld-i386/i386.exp: Run pr18801. * ld-x86-64/x86-64.exp: Likewise. * ld-i386/pr18801.d: New file. * ld-i386/pr18801.s: Likewise. * ld-x86-64/pr18801.d: Likewise. * ld-x86-64/pr18801.s: Likewise.
16 lines
240 B
ArmAsm
16 lines
240 B
ArmAsm
.text
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.type selector, %function
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foo:
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movl $0, %eax
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ret
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selector:
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movabs $foo, %rax
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ret
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.type selector, %gnu_indirect_function
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.globl _start
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_start:
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movabs $selector, %rax
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call *%rax
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ret
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.section .note.GNU-stack,"",@progbits
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