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From: <sv...@va...> - 2016-07-11 21:10:54
|
Author: iraisr
Date: Mon Jul 11 22:10:47 2016
New Revision: 15904
Log:
Ignore pselect_sigmask_null executable.
Part of fix for BZ#364413.
Modified:
trunk/none/tests/ (props changed)
trunk/none/tests/pselect_sigmask_null.c
Modified: trunk/none/tests/pselect_sigmask_null.c
==============================================================================
--- trunk/none/tests/pselect_sigmask_null.c (original)
+++ trunk/none/tests/pselect_sigmask_null.c Mon Jul 11 22:10:47 2016
@@ -1,5 +1,5 @@
/* Make sure handling of NULL sigmask is correct.
- https://bugs.kde.org/show_bug.cgi?id=XXX
+ https://bugs.kde.org/show_bug.cgi?id=364413
We might try to make a copy and adjust the mask.
Testcase provided by Paul Eggert <eg...@cs...> */
|
|
From: <sv...@va...> - 2016-07-11 21:05:10
|
Author: iraisr
Date: Mon Jul 11 22:05:03 2016
New Revision: 15903
Log:
Set executable protection on schedctl pages only when necessary.
n-i-bz
Modified:
trunk/configure.ac
trunk/coregrind/m_syswrap/syswrap-solaris.c
Modified: trunk/configure.ac
==============================================================================
--- trunk/configure.ac (original)
+++ trunk/configure.ac Mon Jul 11 22:05:03 2016
@@ -3604,6 +3604,51 @@
[Define to 1 if fpregset_t defines struct _fpchip_state])
fi
+
+# Solaris-specific check determining if schedctl page shared between kernel
+# and userspace program is executable (illumos, older Solaris) or not (newer
+# Solaris).
+#
+# C-level symbol: SOLARIS_SCHEDCTL_PAGE_EXEC
+# Automake-level symbol: none
+#
+AC_MSG_CHECKING([if schedctl page is executable (Solaris-specific)])
+AC_RUN_IFELSE([AC_LANG_PROGRAM([[
+#include <assert.h>
+#include <fcntl.h>
+#include <procfs.h>
+#include <schedctl.h>
+#include <stdio.h>
+#include <unistd.h>
+]], [[
+ schedctl_t *scp = schedctl_init();
+ if (scp == NULL)
+ return 1;
+
+ int fd = open("/proc/self/map", O_RDONLY);
+ assert(fd >= 0);
+
+ prmap_t map;
+ ssize_t rd;
+ while ((rd = read(fd, &map, sizeof(map))) == sizeof(map)) {
+ if (map.pr_vaddr == ((uintptr_t) scp & PAGEMASK)) {
+ fprintf(stderr, "%#lx [%zu] %s\n", map.pr_vaddr, map.pr_size,
+ (map.pr_mflags & MA_EXEC) ? "x" : "no-x");
+ return (map.pr_mflags & MA_EXEC);
+ }
+ }
+
+ return 1;
+]])], [
+solaris_schedctl_page_exec=no
+AC_MSG_RESULT([no])
+], [
+solaris_schedctl_page_exec=yes
+AC_MSG_RESULT([yes])
+AC_DEFINE([SOLARIS_SCHEDCTL_PAGE_EXEC], 1,
+ [Define to 1 if you have the schedctl page executable.])
+])
+
else
AM_CONDITIONAL(SOLARIS_SUN_STUDIO_AS, false)
AM_CONDITIONAL(SOLARIS_XPG_SYMBOLS_PRESENT, false)
Modified: trunk/coregrind/m_syswrap/syswrap-solaris.c
==============================================================================
--- trunk/coregrind/m_syswrap/syswrap-solaris.c (original)
+++ trunk/coregrind/m_syswrap/syswrap-solaris.c Mon Jul 11 22:05:03 2016
@@ -9427,7 +9427,10 @@
/* Returned address points to a block in a mapped page. */
if (!VG_(am_find_anon_segment)(a)) {
Addr page = VG_PGROUNDDN(a);
- UInt prot = VKI_PROT_READ | VKI_PROT_WRITE | VKI_PROT_EXEC;
+ UInt prot = VKI_PROT_READ | VKI_PROT_WRITE;
+# if defined(SOLARIS_SCHEDCTL_PAGE_EXEC)
+ prot |= VKI_PROT_EXEC;
+# endif /* SOLARIS_SCHEDCTL_PAGE_EXEC */
UInt flags = VKI_MAP_ANONYMOUS;
/* The kernel always allocates one page for the sc_shared struct. */
SizeT size = VKI_PAGE_SIZE;
|