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RSBAC source code, can be unstable sometimes

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--- wiki:experiences:igraltist:patches:2.6.33.5 [2010/06/19 16:55] – created igraltist
+++ wiki:experiences:igraltist:patches:2.6.33.5 [2010/06/19 17:15] – igraltist
@@ Line 1: / Line 1: @@
 [[wiki:experiences/igraltist|Back to igraltist's experiences]]
 ====== Patch for kernel rsbac-pax 2.6.33.5 =====
@@ Line 11: / Line 12: @@
 At least apply this patch.
 <code bash>
+diff -Nur linux-rsbac-pax-prepatch-2.6.33.5/fs/exec.c linux-rsbac-pax-2.6.33.5/fs/exec.c
+--- linux-rsbac-pax-prepatch-2.6.33.5/fs/exec.c	2010-06-19 19:07:51.878274060 +0200
++++ linux-rsbac-pax-2.6.33.5/fs/exec.c	2010-06-19 18:09:29.958251588 +0200
+@@ -56,11 +56,24 @@
+ #include <linux/fs_struct.h>
+ #include <linux/pipe_fs_i.h>
++#include <linux/random.h>
++#include <linux/seq_file.h>
++
++#ifdef CONFIG_PAX_REFCOUNT
++#include <linux/kallsyms.h>
++#include <linux/kdebug.h>
++#endif
++
+ #include <asm/uaccess.h>
+ #include <asm/mmu_context.h>
+ #include <asm/tlb.h>
+ #include "internal.h"
++#ifdef CONFIG_PAX_HOOK_ACL_FLAGS
++void (*pax_set_initial_flags_func)(struct linux_binprm *bprm);
++EXPORT_SYMBOL(pax_set_initial_flags_func);
++#endif
++
+ #include <rsbac/hooks.h>
+ int core_uses_pid;
+diff -Nur linux-rsbac-pax-prepatch-2.6.33.5/fs/pipe.c linux-rsbac-pax-2.6.33.5/fs/pipe.c
+--- linux-rsbac-pax-prepatch-2.6.33.5/fs/pipe.c	2010-06-19 19:07:57.627376691 +0200
++++ linux-rsbac-pax-2.6.33.5/fs/pipe.c	2010-06-19 18:10:56.358833619 +0200
+@@ -776,10 +776,10 @@
+ 	mutex_lock(&inode->i_mutex);
+ 	pipe = inode->i_pipe;
+-	pipe->readers -= decr;
+-	pipe->writers -= decw;
++    atomic_sub(decr, &pipe->readers);
++    atomic_sub(decw, &pipe->writers);
+-	if (!pipe->readers && !pipe->writers) {
++    if (!atomic_read(&pipe->readers) && !atomic_read(&pipe->writers)) {
+ #ifdef CONFIG_RSBAC
+ 		union rsbac_target_id_t rsbac_target_id;
+diff -Nur linux-rsbac-pax-prepatch-2.6.33.5/init/do_mounts.c linux-rsbac-pax-2.6.33.5/init/do_mounts.c
+--- linux-rsbac-pax-prepatch-2.6.33.5/init/do_mounts.c	2010-06-19 19:08:06.855376578 +0200
++++ linux-rsbac-pax-2.6.33.5/init/do_mounts.c	2010-06-19 18:12:12.449251431 +0200
+@@ -424,8 +424,8 @@
+ 	mount_root();
+ out:
+ 	devtmpfs_mount("dev");
+-	sys_mount(".", "/", NULL, MS_MOVE, NULL);
+-	sys_chroot(".");
++	sys_mount((__force char __user *)".", (__force char __user *)"/", NULL, MS_MOVE, NULL);
++	sys_chroot((__force char __user *)".");
+         /* RSBAC: OK, most stuff initialized and root mounted: Init RSBAC. */
+ #ifdef CONFIG_RSBAC
+diff -Nur linux-rsbac-pax-prepatch-2.6.33.5/mm/mprotect.c linux-rsbac-pax-2.6.33.5/mm/mprotect.c
+--- linux-rsbac-pax-prepatch-2.6.33.5/mm/mprotect.c	2010-06-19 19:08:18.563250912 +0200
++++ linux-rsbac-pax-2.6.33.5/mm/mprotect.c	2010-06-19 18:13:06.214533380 +0200
+@@ -24,10 +24,17 @@
+ #include <linux/mmu_notifier.h>
+ #include <linux/migrate.h>
+ #include <linux/perf_event.h>
++
++#ifdef CONFIG_PAX_MPROTECT
++#include <linux/elf.h>
++#endif
++
+ #include <asm/uaccess.h>
+ #include <asm/pgtable.h>
+ #include <asm/cacheflush.h>
+ #include <asm/tlbflush.h>
++#include <asm/mmu_context.h>
++
+ #include <rsbac/hooks.h>
+ #ifndef pgprot_modify
 </code>

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