diff options
| author | Florian Weimer <fweimer@redhat.com> | 2022-04-26 14:23:02 +0200 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2022-04-26 14:24:36 +0200 |
| commit | 8dcb6d0af07fda3607b541857e4f3970a74ed55b (patch) | |
| tree | 06a15719ac286241c9faf9bfd4a802d57ee08bc8 /dlfcn/dladdr.c | |
| parent | c935789bdf40ba22b5698da869d3a4789797e09f (diff) | |
| download | glibc-8dcb6d0af07fda3607b541857e4f3970a74ed55b.tar.gz glibc-8dcb6d0af07fda3607b541857e4f3970a74ed55b.tar.xz glibc-8dcb6d0af07fda3607b541857e4f3970a74ed55b.zip | |
dlfcn: Do not use rtld_active () to determine ld.so state (bug 29078)
When audit modules are loaded, ld.so initialization is not yet
complete, and rtld_active () returns false even though ld.so is
mostly working. Instead, the static dlopen hook is used, but that
does not work at all because this is not a static dlopen situation.
Commit 466c1ea15f461edb8e3ffaf5d86d708876343bbf ("dlfcn: Rework
static dlopen hooks") moved the hook pointer into _rtld_global_ro,
which means that separate protection is not needed anymore and the
hook pointer can be checked directly.
The guard for disabling libio vtable hardening in _IO_vtable_check
should stay for now.
Fixes commit 8e1472d2c1e25e6eabc2059170731365f6d5b3d1 ("ld.so:
Examine GLRO to detect inactive loader [BZ #20204]").
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'dlfcn/dladdr.c')
| -rw-r--r-- | dlfcn/dladdr.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/dlfcn/dladdr.c b/dlfcn/dladdr.c index ead117326f..d188d0e289 100644 --- a/dlfcn/dladdr.c +++ b/dlfcn/dladdr.c @@ -24,7 +24,7 @@ int __dladdr (const void *address, Dl_info *info) { #ifdef SHARED - if (!rtld_active ()) + if (GLRO (dl_dlfcn_hook) != NULL) return GLRO (dl_dlfcn_hook)->dladdr (address, info); #endif return _dl_addr (address, info, NULL, NULL); |