diff options
Diffstat (limited to 'meta/recipes-core/glibc/glibc/0027-Acquire-ld.so-lock-before-switching-to-malloc_atfork.patch')
| -rw-r--r-- | meta/recipes-core/glibc/glibc/0027-Acquire-ld.so-lock-before-switching-to-malloc_atfork.patch | 30 |
1 files changed, 14 insertions, 16 deletions
diff --git a/meta/recipes-core/glibc/glibc/0027-Acquire-ld.so-lock-before-switching-to-malloc_atfork.patch b/meta/recipes-core/glibc/glibc/0027-Acquire-ld.so-lock-before-switching-to-malloc_atfork.patch index 9ec234bd51..1ad14b7fc3 100644 --- a/meta/recipes-core/glibc/glibc/0027-Acquire-ld.so-lock-before-switching-to-malloc_atfork.patch +++ b/meta/recipes-core/glibc/glibc/0027-Acquire-ld.so-lock-before-switching-to-malloc_atfork.patch @@ -1,7 +1,7 @@ -From 94225ab4bcc1613531558a632270b5edce779bc9 Mon Sep 17 00:00:00 2001 +From c3e04a90dd762cad4ee9bd7564d74e052781be5c Mon Sep 17 00:00:00 2001 From: Khem Raj <raj.khem@gmail.com> Date: Sat, 27 Jan 2018 10:08:04 -0800 -Subject: [PATCH 27/27] Acquire ld.so lock before switching to malloc_atfork +Subject: [PATCH 27/30] Acquire ld.so lock before switching to malloc_atfork The patch is from https://sourceware.org/bugzilla/show_bug.cgi?id=4578 @@ -28,11 +28,11 @@ Signed-off-by: Yuanjie Huang <yuanjie.huang@windriver.com> Signed-off-by: Zhixiong Chi <zhixiong.chi@windriver.com> Signed-off-by: Khem Raj <raj.khem@gmail.com> --- - sysdeps/nptl/fork.c | 9 +++++++++ - 1 file changed, 9 insertions(+) + sysdeps/nptl/fork.c | 7 +++++++ + 1 file changed, 7 insertions(+) diff --git a/sysdeps/nptl/fork.c b/sysdeps/nptl/fork.c -index f87506f398..225e7b51f8 100644 +index 0f48933ff1..eef3f9669b 100644 --- a/sysdeps/nptl/fork.c +++ b/sysdeps/nptl/fork.c @@ -25,6 +25,7 @@ @@ -43,22 +43,20 @@ index f87506f398..225e7b51f8 100644 #include <stdio-lock.h> #include <atomic.h> #include <nptl/pthreadP.h> -@@ -60,6 +61,10 @@ __libc_fork (void) - but our current fork implementation is not. */ +@@ -56,6 +57,9 @@ __libc_fork (void) bool multiple_threads = THREAD_GETMEM (THREAD_SELF, header.multiple_threads); + __run_fork_handlers (atfork_run_prepare); + /* 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; -@@ -246,6 +251,10 @@ __libc_fork (void) - allp = allp->next; - } -+ + /* If we are not running multiple threads, we do not have to + preserve lock state. If fork runs from a signal handler, only +@@ -150,6 +154,9 @@ __libc_fork (void) + + /* Run the handlers registered for the parent. */ + __run_fork_handlers (atfork_run_parent); + /* 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)); @@ -66,5 +64,5 @@ index f87506f398..225e7b51f8 100644 return pid; -- -2.16.1 +2.18.0 |