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-rw-r--r--meta/recipes-core/glibc/glibc/0028-Bug-4578-add-ld.so-lock-while-fork.patch57
1 files changed, 0 insertions, 57 deletions
diff --git a/meta/recipes-core/glibc/glibc/0028-Bug-4578-add-ld.so-lock-while-fork.patch b/meta/recipes-core/glibc/glibc/0028-Bug-4578-add-ld.so-lock-while-fork.patch
deleted file mode 100644
index f76237a46e..0000000000
--- a/meta/recipes-core/glibc/glibc/0028-Bug-4578-add-ld.so-lock-while-fork.patch
+++ /dev/null
@@ -1,57 +0,0 @@
-The patch in this Bugzilla entry was requested by a customer:
- https://sourceware.org/bugzilla/show_bug.cgi?id=4578
-
-If a thread happens to hold dl_load_lock and have r_state set to RT_ADD or
-RT_DELETE at the time another thread calls fork(), then the child exit code
-from fork (in nptl/sysdeps/unix/sysv/linux/fork.c in our case) re-initializes
-dl_load_lock but does not restore r_state to RT_CONSISTENT. If the child
-subsequently requires ld.so functionality before calling exec(), then the
-assertion will fire.
-
-The patch acquires dl_load_lock on entry to fork() and releases it on exit
-from the parent path. The child path is initialized as currently done.
-This is essentially pthreads_atfork, but forced to be first because the
-acquisition of dl_load_lock must happen before malloc_atfork is active
-to avoid a deadlock.
-The patch has not yet been integrated upstream.
-
-Upstream-Status: Pending [ Not Author See bugzilla]
-
-Signed-off-by: Raghunath Lolur <Raghunath.Lolur@kpit.com>
-Signed-off-by: Yuanjie Huang <yuanjie.huang@windriver.com>
-Signed-off-by: Zhixiong Chi <zhixiong.chi@windriver.com>
-
-Index: git/sysdeps/nptl/fork.c
-===================================================================
---- git.orig/sysdeps/nptl/fork.c 2017-08-03 16:02:15.674704080 +0800
-+++ git/sysdeps/nptl/fork.c 2017-08-04 18:15:02.463362015 +0800
-@@ -25,6 +25,7 @@
- #include <tls.h>
- #include <hp-timing.h>
- #include <ldsodefs.h>
-+#include <libc-lock.h>
- #include <stdio-lock.h>
- #include <atomic.h>
- #include <nptl/pthreadP.h>
-@@ -60,6 +61,10 @@
- but our current fork implementation is not. */
- bool multiple_threads = THREAD_GETMEM (THREAD_SELF, header.multiple_threads);
-
-+ /* grab ld.so lock BEFORE switching to malloc_atfork */
-+ __rtld_lock_lock_recursive (GL(dl_load_lock));
-+ __rtld_lock_lock_recursive (GL(dl_load_write_lock));
-+
- /* Run all the registered preparation handlers. In reverse order.
- While doing this we build up a list of all the entries. */
- struct fork_handler *runp;
-@@ -247,6 +252,10 @@
-
- allp = allp->next;
- }
-+
-+ /* unlock ld.so last, because we locked it first */
-+ __rtld_lock_unlock_recursive (GL(dl_load_write_lock));
-+ __rtld_lock_unlock_recursive (GL(dl_load_lock));
- }
-
- return pid;