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| author | H.J. Lu <hjl.tools@gmail.com> | 2021-09-30 10:29:17 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2021-09-30 12:40:50 -0700 |
| commit | 1e1ecea62e899acb58c3fdf3b320a0833ddd0dff (patch) | |
| tree | 6b0b404bf7585d34ae6df1fa56f42c009e49d207 | |
| parent | 32b96d0dec0294465d2221a8f049703599d9d8e4 (diff) | |
| download | glibc-1e1ecea62e899acb58c3fdf3b320a0833ddd0dff.tar.gz glibc-1e1ecea62e899acb58c3fdf3b320a0833ddd0dff.tar.xz glibc-1e1ecea62e899acb58c3fdf3b320a0833ddd0dff.zip | |
elf: Replace nsid with args.nsid [BZ #27609]
commit ec935dea6332cb22f9881cd1162bad156173f4b0
Author: Florian Weimer <fweimer@redhat.com>
Date: Fri Apr 24 22:31:15 2020 +0200
elf: Implement __libc_early_init
has
@@ -856,6 +876,11 @@ no more namespaces available for dlmopen()"));
/* See if an error occurred during loading. */
if (__glibc_unlikely (exception.errstring != NULL))
{
+ /* Avoid keeping around a dangling reference to the libc.so link
+ map in case it has been cached in libc_map. */
+ if (!args.libc_already_loaded)
+ GL(dl_ns)[nsid].libc_map = NULL;
+
do_dlopen calls _dl_open with nsid == __LM_ID_CALLER (-2), which calls
dl_open_worker with args.nsid = nsid. dl_open_worker updates args.nsid
if it is __LM_ID_CALLER. After dl_open_worker returns, it is wrong to
use nsid.
Replace nsid with args.nsid after dl_open_worker returns. This fixes
BZ #27609.
| -rw-r--r-- | elf/dl-open.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/elf/dl-open.c b/elf/dl-open.c index a25443f6d1..5295e931b0 100644 --- a/elf/dl-open.c +++ b/elf/dl-open.c @@ -886,7 +886,7 @@ no more namespaces available for dlmopen()")); /* Avoid keeping around a dangling reference to the libc.so link map in case it has been cached in libc_map. */ if (!args.libc_already_loaded) - GL(dl_ns)[nsid].libc_map = NULL; + GL(dl_ns)[args.nsid].libc_map = NULL; /* Remove the object from memory. It may be in an inconsistent state if relocation failed, for example. */ |