diff options
| author | Waldemar Brodkorb <wbx@openadk.org> | 2017-07-18 22:24:52 +0200 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@openadk.org> | 2017-07-20 20:11:25 +0200 |
| commit | 952bb00f0b2eb576b0bf48c4f87018429a42e28d (patch) | |
| tree | 72aba808da126f73e671187dc9a96cdde9cc6da1 | |
| parent | 85c9aaf9e4410bcd367c3e5f6dab13ce9ba936f4 (diff) | |
Revert "libdl: fix size parameter when unmap library in dlclose"
This reverts commit 9b42da7d0558884e2a3cc9a8674ccfc752369610.
This fixes a long standing bug in dlclose().
Can be seen with apache and mod_php or just by executing
php -m to list all modules.
Reported-by: Bernd Kuhls <bernd.kuhls@t-online.de>
| -rw-r--r-- | ldso/libdl/libdl.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/ldso/libdl/libdl.c b/ldso/libdl/libdl.c index f5b6e6092..f34f78152 100644 --- a/ldso/libdl/libdl.c +++ b/ldso/libdl/libdl.c @@ -790,7 +790,7 @@ static int do_dlclose(void *vhandle, int need_fini) int (*dl_elf_fini) (void); void (*dl_brk) (void); struct dyn_elf *handle; - unsigned int end = 0, start = 0xffffffff; + unsigned int end; unsigned int i, j; struct r_scope_elem *ls, *ls_next = NULL; struct elf_resolve **handle_rlist; @@ -867,8 +867,6 @@ static int do_dlclose(void *vhandle, int need_fini) i < tpnt->n_phent; ppnt++, i++) { if (ppnt->p_type != PT_LOAD) continue; - if (ppnt->p_vaddr < start) - start = ppnt->p_vaddr; if (end < ppnt->p_vaddr + ppnt->p_memsz) end = ppnt->p_vaddr + ppnt->p_memsz; } @@ -975,9 +973,7 @@ static int do_dlclose(void *vhandle, int need_fini) } #endif - end = (end + ADDR_ALIGN) & PAGE_ALIGN; - start = start & ~ADDR_ALIGN; - DL_LIB_UNMAP (tpnt, end - start); + DL_LIB_UNMAP (tpnt, end - tpnt->mapaddr); /* Free elements in RTLD_LOCAL scope list */ for (runp = tpnt->rtld_local; runp; runp = tmp) { tmp = runp->next; |