527 lines
21 KiB
Diff
527 lines
21 KiB
Diff
commit 5097cd344fd243fb8deb6dec96e8073753f962f9
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Author: Florian Weimer <fweimer@redhat.com>
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Date: Thu Aug 1 23:31:30 2024 +0200
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elf: Avoid re-initializing already allocated TLS in dlopen (bug 31717)
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The old code used l_init_called as an indicator for whether TLS
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initialization was complete. However, it is possible that
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TLS for an object is initialized, written to, and then dlopen
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for this object is called again, and l_init_called is not true at
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this point. Previously, this resulted in TLS being initialized
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twice, discarding any interim writes (technically introducing a
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use-after-free bug even).
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This commit introduces an explicit per-object flag, l_tls_in_slotinfo.
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It indicates whether _dl_add_to_slotinfo has been called for this
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object. This flag is used to avoid double-initialization of TLS.
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In update_tls_slotinfo, the first_static_tls micro-optimization
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is removed because preserving the initalization flag for subsequent
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use by the second loop for static TLS is a bit complicated, and
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another per-object flag does not seem to be worth it. Furthermore,
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the l_init_called flag is dropped from the second loop (for static
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TLS initialization) because l_need_tls_init on its own prevents
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double-initialization.
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The remaining l_init_called usage in resize_scopes and update_scopes
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is just an optimization due to the use of scope_has_map, so it is
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not changed in this commit.
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The isupper check ensures that libc.so.6 is TLS is not reverted.
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Such a revert happens if l_need_tls_init is not cleared in
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_dl_allocate_tls_init for the main_thread case, now that
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l_init_called is not checked anymore in update_tls_slotinfo
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in elf/dl-open.c.
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Reported-by: Jonathon Anderson <janderson@rice.edu>
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Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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Conflicts:
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elf/Makefile - tests and module-names differences
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elf/Makefile - add $(libdl) where needed
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diff -Nrup a/elf/Makefile b/elf/Makefile
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--- a/elf/Makefile 2024-08-09 21:34:38.159713929 -0400
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+++ b/elf/Makefile 2024-08-16 13:22:32.268485608 -0400
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@@ -369,6 +369,10 @@ tests += \
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tst-dlmopen-dlerror \
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tst-dlmopen-gethostbyname \
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tst-dlmopen-twice \
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+ tst-dlopen-tlsreinit1 \
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+ tst-dlopen-tlsreinit2 \
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+ tst-dlopen-tlsreinit3 \
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+ tst-dlopen-tlsreinit4 \
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tst-dlopenfail \
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tst-dlopenfail-2 \
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tst-dlopenrpath \
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@@ -720,6 +724,9 @@ modules-names = \
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tst-dlmopen-gethostbyname-mod \
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tst-dlmopen-twice-mod1 \
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tst-dlmopen-twice-mod2 \
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+ tst-dlopen-tlsreinitmod1 \
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+ tst-dlopen-tlsreinitmod2 \
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+ tst-dlopen-tlsreinitmod3 \
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tst-dlopenfaillinkmod \
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tst-dlopenfailmod1 \
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tst-dlopenfailmod2 \
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@@ -2775,3 +2782,30 @@ $(objpfx)tst-recursive-tls.out: \
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0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15)
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$(objpfx)tst-recursive-tlsmod%.os: tst-recursive-tlsmodN.c
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$(compile-command.c) -DVAR=thread_$* -DFUNC=get_threadvar_$*
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+
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+# Order matters here. The test needs the constructor for
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+# tst-dlopen-tlsreinitmod2.so to be called first.
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+$(objpfx)tst-dlopen-tlsreinitmod3.so: $(libdl)
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+$(objpfx)tst-dlopen-tlsreinit3: $(libdl)
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+$(objpfx)tst-dlopen-tlsreinitmod1.so: $(libdl)
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+$(objpfx)tst-dlopen-tlsreinit1: $(libdl)
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+LDFLAGS-tst-dlopen-tlsreinitmod1.so = -Wl,--no-as-needed
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+$(objpfx)tst-dlopen-tlsreinitmod1.so: \
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+ $(objpfx)tst-dlopen-tlsreinitmod3.so $(objpfx)tst-dlopen-tlsreinitmod2.so
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+LDFLAGS-tst-dlopen-tlsreinit2 = -Wl,--no-as-needed
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+$(objpfx)tst-dlopen-tlsreinit2: \
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+ $(objpfx)tst-dlopen-tlsreinitmod3.so $(objpfx)tst-dlopen-tlsreinitmod2.so
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+LDFLAGS-tst-dlopen-tlsreinit4 = -Wl,--no-as-needed
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+$(objpfx)tst-dlopen-tlsreinit4: \
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+ $(objpfx)tst-dlopen-tlsreinitmod3.so $(objpfx)tst-dlopen-tlsreinitmod2.so
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+# tst-dlopen-tlsreinitmod2.so is underlinked and refers to
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+# tst-dlopen-tlsreinitmod3.so. The dependency is provided via
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+# $(objpfx)tst-dlopen-tlsreinitmod1.so.
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+tst-dlopen-tlsreinitmod2.so-no-z-defs = yes
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+$(objpfx)tst-dlopen-tlsreinit.out: $(objpfx)tst-dlopen-tlsreinitmod1.so \
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+ $(objpfx)tst-dlopen-tlsreinitmod2.so $(objpfx)tst-dlopen-tlsreinitmod3.so
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+# Reuse an audit module which provides ample debug logging.
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+$(objpfx)tst-dlopen-tlsreinit3.out: $(objpfx)tst-auditmod1.so
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+tst-dlopen-tlsreinit3-ENV = LD_AUDIT=$(objpfx)tst-auditmod1.so
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+$(objpfx)tst-dlopen-tlsreinit4.out: $(objpfx)tst-auditmod1.so
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+tst-dlopen-tlsreinit4-ENV = LD_AUDIT=$(objpfx)tst-auditmod1.so
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diff -Nrup a/elf/dl-open.c b/elf/dl-open.c
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--- a/elf/dl-open.c 2024-08-09 21:34:37.782711770 -0400
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+++ b/elf/dl-open.c 2024-08-13 16:18:12.501292054 -0400
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@@ -361,17 +361,8 @@ resize_tls_slotinfo (struct link_map *ne
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{
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bool any_tls = false;
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for (unsigned int i = 0; i < new->l_searchlist.r_nlist; ++i)
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- {
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- struct link_map *imap = new->l_searchlist.r_list[i];
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-
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- /* Only add TLS memory if this object is loaded now and
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- therefore is not yet initialized. */
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- if (! imap->l_init_called && imap->l_tls_blocksize > 0)
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- {
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- _dl_add_to_slotinfo (imap, false);
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- any_tls = true;
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- }
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- }
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+ if (_dl_add_to_slotinfo (new->l_searchlist.r_list[i], false))
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+ any_tls = true;
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return any_tls;
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}
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@@ -381,22 +372,8 @@ resize_tls_slotinfo (struct link_map *ne
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static void
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update_tls_slotinfo (struct link_map *new)
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{
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- unsigned int first_static_tls = new->l_searchlist.r_nlist;
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for (unsigned int i = 0; i < new->l_searchlist.r_nlist; ++i)
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- {
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- struct link_map *imap = new->l_searchlist.r_list[i];
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-
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- /* Only add TLS memory if this object is loaded now and
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- therefore is not yet initialized. */
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- if (! imap->l_init_called && imap->l_tls_blocksize > 0)
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- {
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- _dl_add_to_slotinfo (imap, true);
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-
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- if (imap->l_need_tls_init
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- && first_static_tls == new->l_searchlist.r_nlist)
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- first_static_tls = i;
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- }
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- }
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+ _dl_add_to_slotinfo (new->l_searchlist.r_list[i], true);
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size_t newgen = GL(dl_tls_generation) + 1;
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if (__glibc_unlikely (newgen == 0))
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@@ -408,13 +385,11 @@ TLS generation counter wrapped! Please
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/* We need a second pass for static tls data, because
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_dl_update_slotinfo must not be run while calls to
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_dl_add_to_slotinfo are still pending. */
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- for (unsigned int i = first_static_tls; i < new->l_searchlist.r_nlist; ++i)
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+ for (unsigned int i = 0; i < new->l_searchlist.r_nlist; ++i)
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{
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struct link_map *imap = new->l_searchlist.r_list[i];
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- if (imap->l_need_tls_init
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- && ! imap->l_init_called
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- && imap->l_tls_blocksize > 0)
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+ if (imap->l_need_tls_init && imap->l_tls_blocksize > 0)
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{
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/* For static TLS we have to allocate the memory here and
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now, but we can delay updating the DTV. */
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diff -Nrup a/elf/dl-tls.c b/elf/dl-tls.c
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--- a/elf/dl-tls.c 2024-08-09 21:34:38.162713946 -0400
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+++ b/elf/dl-tls.c 2024-08-13 16:23:19.819877383 -0400
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@@ -633,17 +633,21 @@ _dl_allocate_tls_init (void *result, boo
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some platforms use in static programs requires it. */
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dtv[map->l_tls_modid].pointer.val = dest;
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- /* Copy the initialization image and clear the BSS part. For
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- audit modules or dependencies with initial-exec TLS, we can not
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- set the initial TLS image on default loader initialization
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- because it would already be set by the audit setup. However,
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- subsequent thread creation would need to follow the default
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- behaviour. */
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+ /* Copy the initialization image and clear the BSS part.
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+ For audit modules or dependencies with initial-exec TLS,
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+ we can not set the initial TLS image on default loader
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+ initialization because it would already be set by the
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+ audit setup, which uses the dlopen code and already
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+ clears l_need_tls_init. Calls with !main_thread from
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+ pthread_create need to initialze TLS for the current
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+ thread regardless of namespace. */
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if (map->l_ns != LM_ID_BASE && main_thread)
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continue;
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memset (__mempcpy (dest, map->l_tls_initimage,
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map->l_tls_initimage_size), '\0',
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map->l_tls_blocksize - map->l_tls_initimage_size);
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+ if (main_thread)
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+ map->l_need_tls_init = 0;
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}
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total += cnt;
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@@ -1100,9 +1104,32 @@ _dl_tls_initial_modid_limit_setup (void)
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}
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-void
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+/* Add module to slot information data. If DO_ADD is false, only the
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+ required memory is allocated. Must be called with
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+ GL (dl_load_tls_lock) acquired. If the function has already been
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+ called for the link map L with !DO_ADD, then this function will not
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+ raise an exception, otherwise it is possible that it encounters a
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+ memory allocation failure.
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+
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+ Return false if L has already been added to the slotinfo data, or
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+ if L has no TLS data. If the returned value is true, L has been
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+ added with this call (DO_ADD), or has been added in a previous call
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+ (!DO_ADD).
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+
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+ The expected usage is as follows: Call _dl_add_to_slotinfo for
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+ several link maps with DO_ADD set to false, and record if any calls
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+ result in a true result. If there was a true result, call
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+ _dl_add_to_slotinfo again, this time with DO_ADD set to true. (For
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+ simplicity, it's possible to call the function for link maps where
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+ the previous result was false.) The return value from the second
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+ round of calls can be ignored. If there was true result initially,
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+ call _dl_update_slotinfo to update the TLS generation counter. */
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+bool
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_dl_add_to_slotinfo (struct link_map *l, bool do_add)
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{
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+ if (l->l_tls_blocksize == 0 || l->l_tls_in_slotinfo)
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+ return false;
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+
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/* Now that we know the object is loaded successfully add
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modules containing TLS data to the dtv info table. We
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might have to increase its size. */
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@@ -1158,5 +1185,8 @@ cannot create TLS data structures"));
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atomic_store_relaxed (&listp->slotinfo[idx].map, l);
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atomic_store_relaxed (&listp->slotinfo[idx].gen,
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GL(dl_tls_generation) + 1);
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+ l->l_tls_in_slotinfo = true;
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}
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+
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+ return true;
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}
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diff -Nrup a/elf/tst-dlopen-tlsreinit1.c b/elf/tst-dlopen-tlsreinit1.c
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--- a/elf/tst-dlopen-tlsreinit1.c 1969-12-31 19:00:00.000000000 -0500
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+++ b/elf/tst-dlopen-tlsreinit1.c 2024-08-09 21:57:01.495424018 -0400
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@@ -0,0 +1,40 @@
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+/* Test that dlopen preserves already accessed TLS (bug 31717).
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+ Copyright (C) 2024 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, see
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+ <https://www.gnu.org/licenses/>. */
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+
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+#include <stdbool.h>
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+#include <support/check.h>
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+#include <support/xdlfcn.h>
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+#include <ctype.h>
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+
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+static int
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+do_test (void)
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+{
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+ void *handle = xdlopen ("tst-dlopen-tlsreinitmod1.so", RTLD_NOW);
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+
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+ bool *tlsreinitmod3_tested = xdlsym (handle, "tlsreinitmod3_tested");
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+ TEST_VERIFY (*tlsreinitmod3_tested);
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+
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+ xdlclose (handle);
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+
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+ /* This crashes if the libc.so.6 TLS image has been reverted. */
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+ TEST_VERIFY (!isupper ('@'));
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+
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+ return 0;
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+}
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+
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+#include <support/test-driver.c>
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diff -Nrup a/elf/tst-dlopen-tlsreinit2.c b/elf/tst-dlopen-tlsreinit2.c
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--- a/elf/tst-dlopen-tlsreinit2.c 1969-12-31 19:00:00.000000000 -0500
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+++ b/elf/tst-dlopen-tlsreinit2.c 2024-08-09 21:59:14.657192089 -0400
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@@ -0,0 +1,39 @@
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+/* Test that dlopen preserves already accessed TLS (bug 31717).
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+ Variant with initially-linked modules.
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+ Copyright (C) 2024 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, see
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+ <https://www.gnu.org/licenses/>. */
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+
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+#include <ctype.h>
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+#include <stdbool.h>
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+#include <support/check.h>
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+#include <support/xdlfcn.h>
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+
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+
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+static int
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+do_test (void)
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+{
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+ /* Defined in tst-dlopen-tlsreinitmod3.so. */
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+ extern bool tlsreinitmod3_tested;
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+ TEST_VERIFY (tlsreinitmod3_tested);
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+
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+ /* This crashes if the libc.so.6 TLS image has been reverted. */
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+ TEST_VERIFY (!isupper ('@'));
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+
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+ return 0;
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+}
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+
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+#include <support/test-driver.c>
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diff -Nrup a/elf/tst-dlopen-tlsreinit3.c b/elf/tst-dlopen-tlsreinit3.c
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--- a/elf/tst-dlopen-tlsreinit3.c 1969-12-31 19:00:00.000000000 -0500
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+++ b/elf/tst-dlopen-tlsreinit3.c 2024-08-09 22:00:43.985707332 -0400
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@@ -0,0 +1,2 @@
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+/* Same code, but run with LD_AUDIT=tst-auditmod1.so. */
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+#include "tst-dlopen-tlsreinit1.c"
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diff -Nrup a/elf/tst-dlopen-tlsreinit4.c b/elf/tst-dlopen-tlsreinit4.c
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--- a/elf/tst-dlopen-tlsreinit4.c 1969-12-31 19:00:00.000000000 -0500
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+++ b/elf/tst-dlopen-tlsreinit4.c 2024-08-09 22:01:30.058973079 -0400
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@@ -0,0 +1,2 @@
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+/* Same code, but run with LD_AUDIT=tst-auditmod1.so. */
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+#include "tst-dlopen-tlsreinit2.c"
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diff -Nrup a/elf/tst-dlopen-tlsreinitmod1.c b/elf/tst-dlopen-tlsreinitmod1.c
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--- a/elf/tst-dlopen-tlsreinitmod1.c 1969-12-31 19:00:00.000000000 -0500
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+++ b/elf/tst-dlopen-tlsreinitmod1.c 2024-08-09 22:02:42.337389978 -0400
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@@ -0,0 +1,20 @@
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+/* Test that dlopen preserves already accessed TLS (bug 31717), module 1.
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+ Copyright (C) 2024 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, see
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+ <https://www.gnu.org/licenses/>. */
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+
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+/* This module triggers loading of tst-dlopen-tlsreinitmod2.so and
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+ tst-dlopen-tlsreinitmod3.so. */
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diff -Nrup a/elf/tst-dlopen-tlsreinitmod2.c b/elf/tst-dlopen-tlsreinitmod2.c
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--- a/elf/tst-dlopen-tlsreinitmod2.c 1969-12-31 19:00:00.000000000 -0500
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+++ b/elf/tst-dlopen-tlsreinitmod2.c 2024-08-09 22:03:54.322805189 -0400
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@@ -0,0 +1,30 @@
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+/* Test that dlopen preserves already accessed TLS (bug 31717), module 2.
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+ Copyright (C) 2024 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, see
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+ <https://www.gnu.org/licenses/>. */
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+
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+#include <stdio.h>
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+
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|
+/* Defined in tst-dlopen-tlsreinitmod3.so. This an underlinked symbol
|
|
+ dependency. */
|
|
+extern void call_tlsreinitmod3 (void);
|
|
+
|
|
+static void __attribute__ ((constructor))
|
|
+tlsreinitmod2_init (void)
|
|
+{
|
|
+ puts ("info: constructor of tst-dlopen-tlsreinitmod2.so invoked");
|
|
+ call_tlsreinitmod3 ();
|
|
+}
|
|
diff -Nrup a/elf/tst-dlopen-tlsreinitmod3.c b/elf/tst-dlopen-tlsreinitmod3.c
|
|
--- a/elf/tst-dlopen-tlsreinitmod3.c 1969-12-31 19:00:00.000000000 -0500
|
|
+++ b/elf/tst-dlopen-tlsreinitmod3.c 2024-08-09 22:07:26.980031781 -0400
|
|
@@ -0,0 +1,102 @@
|
|
+/* Test that dlopen preserves already accessed TLS (bug 31717), module 3.
|
|
+ Copyright (C) 2024 Free Software Foundation, Inc.
|
|
+ This file is part of the GNU C Library.
|
|
+
|
|
+ The GNU C Library is free software; you can redistribute it and/or
|
|
+ modify it under the terms of the GNU Lesser General Public
|
|
+ License as published by the Free Software Foundation; either
|
|
+ version 2.1 of the License, or (at your option) any later version.
|
|
+
|
|
+ The GNU C Library is distributed in the hope that it will be useful,
|
|
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
+ Lesser General Public License for more details.
|
|
+
|
|
+ You should have received a copy of the GNU Lesser General Public
|
|
+ License along with the GNU C Library; if not, see
|
|
+ <https://www.gnu.org/licenses/>. */
|
|
+
|
|
+#include <dlfcn.h>
|
|
+#include <stdbool.h>
|
|
+#include <stdio.h>
|
|
+#include <unistd.h>
|
|
+
|
|
+/* Used to verify from the main program that the test ran. */
|
|
+bool tlsreinitmod3_tested;
|
|
+
|
|
+/* This TLS variable must not revert back to the initial state after
|
|
+ dlopen. */
|
|
+static __thread int tlsreinitmod3_state = 1;
|
|
+
|
|
+/* Set from the ELF constructor during dlopen. */
|
|
+static bool tlsreinitmod3_constructed;
|
|
+
|
|
+/* Second half of test, behind a compiler barrier. The compiler
|
|
+ barrier is necessary to prevent carrying over TLS address
|
|
+ information from call_tlsreinitmod3 to call_tlsreinitmod3_tail. */
|
|
+void call_tlsreinitmod3_tail (void *self) __attribute__ ((weak));
|
|
+
|
|
+/* Called from tst-dlopen-tlsreinitmod2.so. */
|
|
+void
|
|
+call_tlsreinitmod3 (void)
|
|
+{
|
|
+ printf ("info: call_tlsreinitmod3 invoked (state=%d)\n",
|
|
+ tlsreinitmod3_state);
|
|
+
|
|
+ if (tlsreinitmod3_constructed)
|
|
+ {
|
|
+ puts ("error: call_tlsreinitmod3 called after ELF constructor");
|
|
+ fflush (stdout);
|
|
+ /* Cannot rely on test harness due to dynamic linking. */
|
|
+ _exit (1);
|
|
+ }
|
|
+
|
|
+ tlsreinitmod3_state = 2;
|
|
+
|
|
+ /* Self-dlopen. This will run the ELF constructor. */
|
|
+ void *self = dlopen ("tst-dlopen-tlsreinitmod3.so", RTLD_NOW);
|
|
+ if (self == NULL)
|
|
+ {
|
|
+ printf ("error: dlopen: %s\n", dlerror ());
|
|
+ fflush (stdout);
|
|
+ /* Cannot rely on test harness due to dynamic linking. */
|
|
+ _exit (1);
|
|
+ }
|
|
+
|
|
+ call_tlsreinitmod3_tail (self);
|
|
+}
|
|
+
|
|
+void
|
|
+call_tlsreinitmod3_tail (void *self)
|
|
+{
|
|
+ printf ("info: dlopen returned in tlsreinitmod3 (state=%d)\n",
|
|
+ tlsreinitmod3_state);
|
|
+
|
|
+ if (!tlsreinitmod3_constructed)
|
|
+ {
|
|
+ puts ("error: dlopen did not call tlsreinitmod3 ELF constructor");
|
|
+ fflush (stdout);
|
|
+ /* Cannot rely on test harness due to dynamic linking. */
|
|
+ _exit (1);
|
|
+ }
|
|
+
|
|
+ if (tlsreinitmod3_state != 2)
|
|
+ {
|
|
+ puts ("error: TLS state reverted in tlsreinitmod3");
|
|
+ fflush (stdout);
|
|
+ /* Cannot rely on test harness due to dynamic linking. */
|
|
+ _exit (1);
|
|
+ }
|
|
+
|
|
+ dlclose (self);
|
|
+
|
|
+ /* Signal test completion to the main program. */
|
|
+ tlsreinitmod3_tested = true;
|
|
+}
|
|
+
|
|
+static void __attribute__ ((constructor))
|
|
+tlsreinitmod3_init (void)
|
|
+{
|
|
+ puts ("info: constructor of tst-dlopen-tlsreinitmod3.so invoked");
|
|
+ tlsreinitmod3_constructed = true;
|
|
+}
|
|
diff -Nrup a/include/link.h b/include/link.h
|
|
--- a/include/link.h 2024-08-09 21:34:37.642710968 -0400
|
|
+++ b/include/link.h 2024-08-09 22:09:03.764585534 -0400
|
|
@@ -210,6 +210,7 @@ struct link_map
|
|
unsigned int l_free_initfini:1; /* Nonzero if l_initfini can be
|
|
freed, ie. not allocated with
|
|
the dummy malloc in ld.so. */
|
|
+ unsigned int l_tls_in_slotinfo:1; /* TLS slotinfo updated in dlopen. */
|
|
|
|
/* NODELETE status of the map. Only valid for maps of type
|
|
lt_loaded. Lazy binding sets l_nodelete_active directly,
|
|
diff -Nrup a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
|
|
--- a/sysdeps/generic/ldsodefs.h 2024-08-09 21:34:38.164713958 -0400
|
|
+++ b/sysdeps/generic/ldsodefs.h 2024-08-13 16:41:52.398600434 -0400
|
|
@@ -1218,13 +1218,7 @@ extern void *_dl_open (const char *name,
|
|
extern int _dl_scope_free (void *) attribute_hidden;
|
|
|
|
|
|
-/* Add module to slot information data. If DO_ADD is false, only the
|
|
- required memory is allocated. Must be called with GL
|
|
- (dl_load_tls_lock) acquired. If the function has already been called
|
|
- for the link map L with !do_add, then this function will not raise
|
|
- an exception, otherwise it is possible that it encounters a memory
|
|
- allocation failure. */
|
|
-extern void _dl_add_to_slotinfo (struct link_map *l, bool do_add)
|
|
+extern bool _dl_add_to_slotinfo (struct link_map *l, bool do_add)
|
|
attribute_hidden;
|
|
|
|
/* Update slot information data for at least the generation of the
|