[Bug dynamic-link/25396] [2.31 Regression] FAIL: nss/test-netdb

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=25396

--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
There is

 /* Remember whether this object must be initialized first.  */
  if (l->l_flags_1 & DF_1_INITFIRST)
    GL(dl_initfirst) = l; 

libpthread.so.0 has

 0x000000006ffffffb (FLAGS_1)            Flags: NOW NODELETE INITFIRST

_dl_close_worker unloaded libpthread.so.0 which left GL(dl_initfirst)
unchanged.  This patch:

diff --git a/elf/dl-close.c b/elf/dl-close.c
index 104c299209..2d426d8737 100644
--- a/elf/dl-close.c
+++ b/elf/dl-close.c
@@ -756,6 +756,9 @@ _dl_close_worker (struct link_map *map, bool force)
     if (imap->l_runpath_dirs.dirs != (void *) -1)
       free (imap->l_runpath_dirs.dirs);

+    if (imap == GL(dl_initfirst))
+      GL(dl_initfirst) = NULL;
+
     free (imap);
   }
     }

seems to work.

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