dev-libs/jemalloc: Patch added to fix an issue with sys-apps/sandbox

Cherry picked commit c443b67561 [Link 1] which fixes an issue which
prevented any jemalloc-enabled application from running through
sys-apps/sandbox (typical use case is emerge with FEATURES=sandbox and
FEATURES=test).

Cherry picked commit 3c8c3e9e9b [Link 2] which fixes a leaked file
descriptor.

Link 1: https://github.com/jemalloc/jemalloc/commit/c443b67561891ae68d688daf5f8ce37820cdba2b
Link 2: https://github.com/jemalloc/jemalloc/commit/3c8c3e9e9b59b6e34a222816a05f0a01a68919b3
Gentoo-Bug: https://bugs.gentoo.org/592420

Package-Manager: portage-2.3.2

3 files changed, 86 insertions, 0 deletions

diff --git a/dev-libs/jemalloc/files/jemalloc-4.2-issue_399.patch b/dev-libs/jemalloc/files/jemalloc-4.2-issue_399.patch
new file mode 100644
index 000000000000..da9f2d8ad771
--- /dev/null
+++ b/dev-libs/jemalloc/files/jemalloc-4.2-issue_399.patch
@@ -0,0 +1,26 @@
+From 3c8c3e9e9b59b6e34a222816a05f0a01a68919b3 Mon Sep 17 00:00:00 2001
+From: Jason Evans <jasone@canonware.com>
+Date: Mon, 26 Sep 2016 15:55:40 -0700
+Subject: [PATCH] Close file descriptor after reading
+ "/proc/sys/vm/overcommit_memory".
+
+This bug was introduced by c2f970c32b527660a33fa513a76d913c812dcf7c
+(Modify pages_map() to support mapping uncommitted virtual memory.).
+
+This resolves #399.
+---
+ src/pages.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/pages.c b/src/pages.c
+index 2a9b7e3..05b0d69 100644
+--- a/src/pages.c
++++ b/src/pages.c
+@@ -219,6 +219,7 @@ os_overcommits_proc(void)
+ 		return (false); /* Error. */
+ 
+ 	nread = read(fd, &buf, sizeof(buf));
++	close(fd);
+ 	if (nread < 1)
+ 		return (false); /* Error. */
+ 	/*
diff --git a/dev-libs/jemalloc/files/jemalloc-4.2-issue_443.patch b/dev-libs/jemalloc/files/jemalloc-4.2-issue_443.patch
new file mode 100644
index 000000000000..d2b065a3b6e0
--- /dev/null
+++ b/dev-libs/jemalloc/files/jemalloc-4.2-issue_443.patch
@@ -0,0 +1,58 @@
+From c443b67561891ae68d688daf5f8ce37820cdba2b Mon Sep 17 00:00:00 2001
+From: Jason Evans <jasone@canonware.com>
+Date: Sat, 29 Oct 2016 22:41:04 -0700
+Subject: [PATCH] Use syscall(2) rather than {open,read,close}(2) during boot.
+
+Some applications wrap various system calls, and if they call the
+allocator in their wrappers, unexpected reentry can result.  This is not
+a general solution (many other syscalls are spread throughout the code),
+but this resolves a bootstrapping issue that is apparently common.
+
+This resolves #443.
+---
+ src/pages.c | 19 +++++++++++++++++++
+ 1 file changed, 19 insertions(+)
+
+diff --git a/src/pages.c b/src/pages.c
+index 05b0d69..84e2216 100644
+--- a/src/pages.c
++++ b/src/pages.c
+@@ -207,6 +207,11 @@ os_overcommits_sysctl(void)
+ #endif
+ 
+ #ifdef JEMALLOC_PROC_SYS_VM_OVERCOMMIT_MEMORY
++/*
++ * Use syscall(2) rather than {open,read,close}(2) when possible to avoid
++ * reentry during bootstrapping if another library has interposed system call
++ * wrappers.
++ */
+ static bool
+ os_overcommits_proc(void)
+ {
+@@ -214,12 +219,26 @@ os_overcommits_proc(void)
+ 	char buf[1];
+ 	ssize_t nread;
+ 
++#ifdef SYS_open
++	fd = (int)syscall(SYS_open, "/proc/sys/vm/overcommit_memory", O_RDONLY);
++#else
+ 	fd = open("/proc/sys/vm/overcommit_memory", O_RDONLY);
++#endif
+ 	if (fd == -1)
+ 		return (false); /* Error. */
+ 
++#ifdef SYS_read
++	nread = (ssize_t)syscall(SYS_read, fd, &buf, sizeof(buf));
++#else
+ 	nread = read(fd, &buf, sizeof(buf));
++#endif
++
++#ifdef SYS_close
++	syscall(SYS_close, fd);
++#else
+ 	close(fd);
++#endif
++
+ 	if (nread < 1)
+ 		return (false); /* Error. */
+ 	/*
diff --git a/dev-libs/jemalloc/jemalloc-4.2.1.ebuild b/dev-libs/jemalloc/jemalloc-4.2.1-r1.ebuild
index 8c320ea1c37f..c7f3d8aa79e6 100644
--- a/dev-libs/jemalloc/jemalloc-4.2.1.ebuild
+++ b/dev-libs/jemalloc/jemalloc-4.2.1-r1.ebuild
@@ -17,6 +17,8 @@ IUSE="debug static-libs stats"
 HTML_DOCS=( doc/jemalloc.html )
 PATCHES=( "${FILESDIR}/${PN}-3.5.1-strip-optimization.patch"
 	"${FILESDIR}/${PN}-3.5.1_fix_html_install.patch"
+	"${FILESDIR}/${PN}-4.2-issue_399.patch"
+	"${FILESDIR}/${PN}-4.2-issue_443.patch"
 )
 MULTILIB_WRAPPED_HEADERS=( /usr/include/jemalloc/jemalloc.h )
 # autotools-utils.eclass auto-adds configure options when static-libs is in IUSE