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lib: fix elf_py TLS section handling

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... need to ignore TLS sections, their address is effectively
meaningless but can overlap other sections we actually need to access.

Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
This commit is contained in:
David Lamparter 2021-11-10 15:30:07 +01:00
parent 8d4e934b08
commit 3942ee1f7b
1 changed files with 3 additions and 0 deletions
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lib/elf_py.c
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@ -636,6 +636,9 @@ static Elf_Scn *elf_find_addr(struct elffile *ef, uint64_t addr, size_t *idx)
Elf_Scn *scn = elf_getscn(ef->elf, i); Elf_Scn *scn = elf_getscn(ef->elf, i);
GElf_Shdr _shdr, *shdr = gelf_getshdr(scn, &_shdr); GElf_Shdr _shdr, *shdr = gelf_getshdr(scn, &_shdr);
/* virtual address is kinda meaningless for TLS sections */
if (shdr->sh_flags & SHF_TLS)
continue;
if (addr < shdr->sh_addr || if (addr < shdr->sh_addr ||
addr >= shdr->sh_addr + shdr->sh_size) addr >= shdr->sh_addr + shdr->sh_size)
continue; continue;