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authorH.J. Lu <hjl.tools@gmail.com>2015-08-13 04:31:38 -0700
committerH.J. Lu <hjl.tools@gmail.com>2015-08-13 04:31:38 -0700
commit8efa2874ab298f3923f4127340da119435f87c39 (patch)
tree09065381bc362db4d84940bfcc95cec64cc3fe42 /gdb/linespec.c
parent4ab90a7a90ccf8a671f139c1c6387ba8028e6011 (diff)
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Issue an error for read-only segment with dynamic IFUNC relocations
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.
Diffstat (limited to 'gdb/linespec.c')
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