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| author | H.J. Lu <hjl.tools@gmail.com> | 2021-12-15 13:58:33 -0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2022-01-21 11:18:03 -0800 |
| commit | e22a4557eb39d7cba9a74d70f4582c13f1a7a83a (patch) | |
| tree | 591a391f4e503c61970443d16c6e3f5881532985 /misc/ptrace.c | |
| 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 'misc/ptrace.c')
0 files changed, 0 insertions, 0 deletions