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fix double-processing of DT_RELR relocations in ldso relocating itself

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this is analogous to skip_relative logic in do_relocs -- because
relative relocations for the dynamic linker itself were already
performed at entry (stage 1), they must not be applied again.
This commit is contained in:
Rich Felker 2022-11-10 09:02:02 -05:00
parent b50eb8c36c
commit 29e4319178
1 changed files with 1 additions and 0 deletions
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ldso/dynlink.c
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@ -552,6 +552,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
static void do_relr_relocs(struct dso *dso, size_t *relr, size_t relr_size) static void do_relr_relocs(struct dso *dso, size_t *relr, size_t relr_size)
{ {
if (dso == &ldso) return; /* self-relocation was done in _dlstart */
unsigned char *base = dso->base; unsigned char *base = dso->base;
size_t *reloc_addr; size_t *reloc_addr;
for (; relr_size; relr++, relr_size-=sizeof(size_t)) for (; relr_size; relr++, relr_size-=sizeof(size_t))