Hi,
this is a note to let you know that I've just added this patch to the
master-next branch of the meta-java repository at
git://git.yoctoproject.org/meta-java
As soon as it has gone through some more testing it will likely be
merged to the master branch.
If you have any questions, please let me know.
regards;Richard.L
On 19/02/2019 03:30, Wenlin Kang wrote:
When call JNI_CreateJavaVM API, sometimes it will crash(we have
reproduced it on quemuppc), this patch fixes it.
Signed-off-by: Wenlin Kang <[email protected]>
---
.../openjdk-8-release-172b11-common.inc | 1 +
...otspot-fix-crash-on-JNI_CreateJavaVM.patch | 36 +++++++++++++++++++
2 files changed, 37 insertions(+)
create mode 100644
recipes-core/openjdk/patches-openjdk-8/0001-hotspot-fix-crash-on-JNI_CreateJavaVM.patch
diff --git a/recipes-core/openjdk/openjdk-8-release-172b11-common.inc
b/recipes-core/openjdk/openjdk-8-release-172b11-common.inc
index ad20585..b37608c 100644
--- a/recipes-core/openjdk/openjdk-8-release-172b11-common.inc
+++ b/recipes-core/openjdk/openjdk-8-release-172b11-common.inc
@@ -21,6 +21,7 @@ PATCHES_URI = "\
${LIBPNG_NEON_PATCH} \
file://handle_extra_output.patch \
file://hotspot-handle-gcc7-format-overflow.patch \
+ file://0001-hotspot-fix-crash-on-JNI_CreateJavaVM.patch \
"
HOTSPOT_UB_PATCH = "\
file://0014-hotspot-zero-fix-undefined-behaviour-gcc-v8-fix.patch \
diff --git
a/recipes-core/openjdk/patches-openjdk-8/0001-hotspot-fix-crash-on-JNI_CreateJavaVM.patch
b/recipes-core/openjdk/patches-openjdk-8/0001-hotspot-fix-crash-on-JNI_CreateJavaVM.patch
new file mode 100644
index 0000000..4618b6b
--- /dev/null
+++
b/recipes-core/openjdk/patches-openjdk-8/0001-hotspot-fix-crash-on-JNI_CreateJavaVM.patch
@@ -0,0 +1,36 @@
+From d0ebd6f108df9b0f9533de6f16280ceec136d8e6 Mon Sep 17 00:00:00 2001
+From: Wenlin Kang <[email protected]>
+Date: Sun, 17 Feb 2019 22:38:33 -0800
+Subject: [PATCH] hotspot: fix crash on JNI_CreateJavaVM
+
+In function os::pd_create_stack_guard_pages(char* addr, size_t size),
+when addr < os::Linux::initial_thread_stack_bottom(), usually munmap()
+will not be called, but when mincore()==-1, get_stack_commited_bottom()
+will make stack_extent < os::Linux::initial_thread_stack_bottom() and
+stack_extent < addr too, then munmap() is called, in such case, it may
+cause segment(we have reproduced it on linux_PPC).
+
+Upstream-Status: Pending
+
+Signed-off-by: Wenlin Kang <[email protected]>
+---
+ hotspot/src/os/linux/vm/os_linux.cpp | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/hotspot/src/os/linux/vm/os_linux.cpp
b/hotspot/src/os/linux/vm/os_linux.cpp
+index 044a70a6..b8246ce4 100644
+--- a/hotspot/src/os/linux/vm/os_linux.cpp
++++ b/hotspot/src/os/linux/vm/os_linux.cpp
+@@ -3078,7 +3078,8 @@ bool os::pd_create_stack_guard_pages(char* addr, size_t
size) {
+ uintptr_t stack_extent = (uintptr_t)
os::Linux::initial_thread_stack_bottom();
+ unsigned char vec[1];
+
+- if (mincore((address)stack_extent, os::vm_page_size(), vec) == -1) {
++ if ((mincore((address)stack_extent, os::vm_page_size(), vec) == -1)
++ && ((size_t)addr > (size_t)stack_extent)) {
+ // Fallback to slow path on all errors, including EAGAIN
+ stack_extent = (uintptr_t) get_stack_commited_bottom(
+ os::Linux::initial_thread_stack_bottom(),
+--
+2.17.1
+
--
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