systemtap/RHEL-36201a.patch

commit b8d4274d1e7697801c12c512b6724dd3f59f2c72
Author: William Cohen <wcohen@redhat.com>
Date:   Mon May 6 11:36:42 2024 -0400

    Support kernels that backported kallsym functions from newer linux kernels
    
    Some Linux distributions may have backported
    module_kallsyms_on_each_symbol and kallsyms_on_each_symbol functions
    from newer linux kernels.  In these situations checking the kernel
    version would not detect the proper arguments for these functions.
    Systemtap now has a couple of autoconf tests to determine what
    arguments should be used for these functions.

diff --git a/buildrun.cxx b/buildrun.cxx
index bb7bdcc9d..8ee8c391f 100644
--- a/buildrun.cxx
+++ b/buildrun.cxx
@@ -506,6 +506,8 @@ compile_pass (systemtap_session& s)
 
   output_autoconf(s, o, cs, "autoconf-pagefault_disable.c", "STAPCONF_PAGEFAULT_DISABLE", NULL);
   output_exportconf(s, o2, "kallsyms_lookup_name", "STAPCONF_KALLSYMS_LOOKUP_NAME_EXPORTED");
+  output_autoconf(s, o, cs, "autoconf-kallsyms_6_3.c", "STAPCONF_KALLSYMS_6_3", NULL);
+  output_autoconf(s, o, cs, "autoconf-kallsyms_6_4.c", "STAPCONF_KALLSYMS_6_4", NULL);
   output_autoconf(s, o, cs, "autoconf-uidgid.c", "STAPCONF_LINUX_UIDGID_H", NULL);
   output_exportconf(s, o2, "sigset_from_compat", "STAPCONF_SIGSET_FROM_COMPAT_EXPORTED");
   output_exportconf(s, o2, "vzalloc", "STAPCONF_VZALLOC");
diff --git a/runtime/linux/autoconf-kallsyms_6_3.c b/runtime/linux/autoconf-kallsyms_6_3.c
new file mode 100644
index 000000000..0af1a5c35
--- /dev/null
+++ b/runtime/linux/autoconf-kallsyms_6_3.c
@@ -0,0 +1,6 @@
+#include <linux/module.h>
+
+int module_kallsyms_on_each_symbol(const char *modname,
+				   int (*fn)(void *, const char *, struct module*,
+					     unsigned long),
+				   void *data);
diff --git a/runtime/linux/autoconf-kallsyms_6_4.c b/runtime/linux/autoconf-kallsyms_6_4.c
new file mode 100644
index 000000000..3b3680c53
--- /dev/null
+++ b/runtime/linux/autoconf-kallsyms_6_4.c
@@ -0,0 +1,3 @@
+#include <linux/kallsyms.h>
+int kallsyms_on_each_symbol(int (*fn)(void *, const char *, unsigned long),
+			    void *data);
diff --git a/runtime/linux/kprobes.c b/runtime/linux/kprobes.c
index 6b30f2c52..2fba61cbb 100644
--- a/runtime/linux/kprobes.c
+++ b/runtime/linux/kprobes.c
@@ -737,7 +737,7 @@ __stapkp_symbol_callback(void *data, const char *name,
 }
 
 static int
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(6,4,0)
+#if defined(STAPCONF_KALLSYMS_6_4)
 stapkp_symbol_callback(void *data, const char *name,
 			unsigned long addr)
 {
@@ -780,7 +780,7 @@ stapkp_init(struct stap_kprobe_probe *probes,
        mutex_lock(&module_mutex);
 #endif
        kallsyms_on_each_symbol(stapkp_symbol_callback, &sd);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(6,3,0)
+#if defined(STAPCONF_KALLSYMS_6_3) || defined(STAPCONF_KALLSYMS_6_4)
        module_kallsyms_on_each_symbol(sd.modname, stapkp_symbol_callback, &sd);
 #elif LINUX_VERSION_CODE >= KERNEL_VERSION(5,12,0)
        module_kallsyms_on_each_symbol(stapkp_symbol_callback, &sd);
@@ -855,7 +855,7 @@ stapkp_refresh(const char *modname,
          mutex_lock(&module_mutex);
 #endif
 	 kallsyms_on_each_symbol(stapkp_symbol_callback, &sd);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(6,3,0)
+#if defined(STAPCONF_KALLSYMS_6_3)
 	 module_kallsyms_on_each_symbol(sd.modname, stapkp_symbol_callback, &sd);
 #elif LINUX_VERSION_CODE >= KERNEL_VERSION(5,12,0)
 	 module_kallsyms_on_each_symbol(stapkp_symbol_callback, &sd);
diff --git a/runtime/sym.c b/runtime/sym.c
index 3947d42f7..23dd3be30 100644
--- a/runtime/sym.c
+++ b/runtime/sym.c
@@ -1187,7 +1187,7 @@ unsigned long kallsyms_lookup_name (const char *name)
 typedef typeof(&kallsyms_on_each_symbol) kallsyms_on_each_symbol_fn;
 
 // XXX Will be linked in place of the kernel's kallsyms_on_each_symbol:
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(6,4,0)
+#if defined(STAPCONF_KALLSYMS_6_4)
 int kallsyms_on_each_symbol(int (*fn)(void *, const char *,
 				      unsigned long),
                             void *data)
@@ -1214,13 +1214,13 @@ int kallsyms_on_each_symbol(int (*fn)(void *, const char *, struct module *,
 typedef typeof(&module_kallsyms_on_each_symbol) module_kallsyms_on_each_symbol_fn;
 
 // XXX Will be linked in place of the kernel's module_kallsyms_on_each_symbol:
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(6,4,0)
+#if defined(STAPCONF_KALLSYMS_6_4)
 int module_kallsyms_on_each_symbol(const char *modname,
                                    int (*fn)(void *, const char *,
 				      unsigned long),
                             void *data)
 #else
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(6,3,0)
+#if defined(STAPCONF_KALLSYMS_6_3)
 int module_kallsyms_on_each_symbol(const char *modname,
 				   int (*fn)(void *, const char *, struct module *,
 				      unsigned long),
@@ -1235,7 +1235,7 @@ int module_kallsyms_on_each_symbol(int (*fn)(void *, const char *, struct module
         /* First, try to use a kallsyms_lookup_name address passed to us
            through the relocation mechanism. */
         if (_stp_module_kallsyms_on_each_symbol != NULL)
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(6,3,0)
+#if defined(STAPCONF_KALLSYMS_6_3) || defined(STAPCONF_KALLSYMS_6_4)
 		return ibt_wrapper(int,
 				   (* (module_kallsyms_on_each_symbol_fn)_stp_module_kallsyms_on_each_symbol)(modname, fn, data));
 #else