diff options
Diffstat (limited to 'elf/dl-open.c')
| -rw-r--r-- | elf/dl-open.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/elf/dl-open.c b/elf/dl-open.c index a043cf61b6..2000f580c3 100644 --- a/elf/dl-open.c +++ b/elf/dl-open.c @@ -201,10 +201,10 @@ dl_open_worker (void *a) for (Lmid_t ns = 0; ns < DL_NNS; ++ns) for (l = GL(dl_ns)[ns]._ns_loaded; l != NULL; l = l->l_next) if (caller_dlopen >= (const void *) l->l_map_start - && caller_dlopen < (const void *) l->l_map_end) + && caller_dlopen < (const void *) l->l_map_end + && (l->l_contiguous + || _dl_addr_inside_object (l, (ElfW(Addr)) caller_dlopen))) { - /* There must be exactly one DSO for the range of the virtual - memory. Otherwise something is really broken. */ assert (ns == l->l_ns); call_map = l; goto found_caller; @@ -662,3 +662,21 @@ show_scope (struct link_map *new) } } #endif + +#ifdef IS_IN_rtld +/* Return non-zero if ADDR lies within one of L's segments. */ +int +internal_function +_dl_addr_inside_object (struct link_map *l, const ElfW(Addr) addr) +{ + int n = l->l_phnum; + const ElfW(Addr) reladdr = addr - l->l_addr; + + while (--n >= 0) + if (l->l_phdr[n].p_type == PT_LOAD + && reladdr - l->l_phdr[n].p_vaddr >= 0 + && reladdr - l->l_phdr[n].p_vaddr < l->l_phdr[n].p_memsz) + return 1; + return 0; +} +#endif |