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author | H.J. Lu <hjl.tools@gmail.com> | 2021-12-15 13:58:33 -0800 |
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committer | H.J. Lu <hjl.tools@gmail.com> | 2022-01-21 11:18:03 -0800 |
commit | e22a4557eb39d7cba9a74d70f4582c13f1a7a83a (patch) | |
tree | 591a391f4e503c61970443d16c6e3f5881532985 /sysdeps | |
parent | ee8d5e33adb284601c00c94687bc907e10aec9bb (diff) | |
download | glibc-e22a4557eb39d7cba9a74d70f4582c13f1a7a83a.tar.gz glibc-e22a4557eb39d7cba9a74d70f4582c13f1a7a83a.tar.xz glibc-e22a4557eb39d7cba9a74d70f4582c13f1a7a83a.zip |
elf: Properly align all PT_LOAD segments [BZ #28676]
Linker may set p_align of a PT_LOAD segment larger than p_align of the first PT_LOAD segment to satisfy a section alignment: Elf file type is DYN (Shared object file) Entry point 0x0 There are 10 program headers, starting at offset 64 Program Headers: Type Offset VirtAddr PhysAddr FileSiz MemSiz Flags Align LOAD 0x0000000000000000 0x0000000000000000 0x0000000000000000 0x0000000000000834 0x0000000000000834 R E 0x1000 LOAD 0x0000000000000e00 0x0000000000001e00 0x0000000000001e00 0x0000000000000230 0x0000000000000230 RW 0x1000 LOAD 0x0000000000400000 0x0000000000400000 0x0000000000400000 0x0000000000000004 0x0000000000000008 RW 0x400000 ... Section to Segment mapping: Segment Sections... 00 .note.gnu.property .note.gnu.build-id .gnu.hash .dynsym .dynstr .gnu.version .gnu.version_r .rela.dyn .rela.plt .init .plt .plt.got .text .fini .rodata .eh_frame_hdr .eh_frame 01 .init_array .fini_array .data.rel.ro .dynamic .got .got.plt 02 .data .bss We should align the first PT_LOAD segment to the maximum p_align of all PT_LOAD segments, similar to the kernel commit: commit ce81bb256a224259ab686742a6284930cbe4f1fa Author: Chris Kennelly <ckennelly@google.com> Date: Thu Oct 15 20:12:32 2020 -0700 fs/binfmt_elf: use PT_LOAD p_align values for suitable start address This fixes BZ #28676. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'sysdeps')
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