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authorBobby Bingham <koorogi@koorogi.info>2016-07-25 22:52:58 -0500
committerRich Felker <dalias@aerifal.cx>2016-11-11 12:58:27 -0500
commit54482898abe8d6d937ee67ea5974cd8eae859c37 (patch)
tree400a5d1fbfee1cb3b90f3a215f3da7b771dca3c9 /ldso/dynlink.c
parentb418ea1b66d0d5a08640d4edf3b65d4619c6ef7f (diff)
downloadmusl-54482898abe8d6d937ee67ea5974cd8eae859c37.tar.gz
treat null vdso base same as missing
On s390x, the kernel provides AT_SYSINFO_EHDR, but sets it to zero, if the program being run does not have a program interpreter. This causes problems when running the dynamic linker directly.
Diffstat (limited to 'ldso/dynlink.c')
-rw-r--r--ldso/dynlink.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ldso/dynlink.c b/ldso/dynlink.c
index ad49cac2..c6890845 100644
--- a/ldso/dynlink.c
+++ b/ldso/dynlink.c
@@ -1550,7 +1550,7 @@ _Noreturn void __dls3(size_t *sp)
}
/* Attach to vdso, if provided by the kernel */
- if (search_vec(auxv, &vdso_base, AT_SYSINFO_EHDR)) {
+ if (search_vec(auxv, &vdso_base, AT_SYSINFO_EHDR) && vdso_base) {
Ehdr *ehdr = (void *)vdso_base;
Phdr *phdr = vdso.phdr = (void *)(vdso_base + ehdr->e_phoff);
vdso.phnum = ehdr->e_phnum;