On Thursday 05 October 2006 19:57, Steve Fox wrote:
> On Thu, 2006-10-05 at 17:40 +0200, Andi Kleen wrote:
> 
> > Please don't snip the Code: line. It is fairly important.
> 
> Sorry about that. The remote console I was using appears to overwrite
> some text after I force the reboot. Here's a clean one.
> 
> global ffffffffffffffff

Ok that definitely shouldn't be in there.

I guess we need to track when it gets corrupted. Can you send the full
boot log with this patch applied?


-Andi

Index: linux-2.6.19-rc1-hack/init/main.c
===================================================================
--- linux-2.6.19-rc1-hack.orig/init/main.c
+++ linux-2.6.19-rc1-hack/init/main.c
@@ -75,6 +75,9 @@
 
 static int init(void *);
 
+extern void bugcheck(char *, int);
+#define CHECK bugcheck(__FILE__, __LINE__)
+
 extern void init_IRQ(void);
 extern void fork_init(unsigned long);
 extern void mca_init(void);
@@ -480,6 +483,8 @@ asmlinkage void __init start_kernel(void
        char * command_line;
        extern struct kernel_param __start___param[], __stop___param[];
 
+       CHECK;
+
        smp_setup_processor_id();
 
        /*
@@ -502,7 +507,9 @@ asmlinkage void __init start_kernel(void
        page_address_init();
        printk(KERN_NOTICE);
        printk(linux_banner);
+       CHECK;
        setup_arch(&command_line);
+       CHECK;
        setup_per_cpu_areas();
        smp_prepare_boot_cpu(); /* arch-specific boot-cpu hooks */
 
@@ -517,6 +524,7 @@ asmlinkage void __init start_kernel(void
         * fragile until we cpu_idle() for the first time.
         */
        preempt_disable();
+       CHECK;
        build_all_zonelists();
        page_alloc_init();
        printk(KERN_NOTICE "Kernel command line: %s\n", saved_command_line);
@@ -525,6 +533,7 @@ asmlinkage void __init start_kernel(void
                   __stop___param - __start___param,
                   &unknown_bootoption);
        sort_main_extable();
+       CHECK;
        trap_init();
        rcu_init();
        init_IRQ();
@@ -533,8 +542,10 @@ asmlinkage void __init start_kernel(void
        hrtimers_init();
        softirq_init();
        timekeeping_init();
+       CHECK;
        time_init();
        profile_init();
+       CHECK;
        if (!irqs_disabled())
                printk("start_kernel(): bug: interrupts were enabled early\n");
        early_boot_irqs_on();
@@ -568,7 +579,9 @@ asmlinkage void __init start_kernel(void
 #endif
        vfs_caches_init_early();
        cpuset_init_early();
+       CHECK;
        mem_init();
+       CHECK;
        kmem_cache_init();
        setup_per_cpu_pageset();
        numa_policy_init();
@@ -577,6 +590,7 @@ asmlinkage void __init start_kernel(void
        calibrate_delay();
        pidmap_init();
        pgtable_cache_init();
+       CHECK;
        prio_tree_init();
        anon_vma_init();
 #ifdef CONFIG_X86
@@ -586,12 +600,14 @@ asmlinkage void __init start_kernel(void
        fork_init(num_physpages);
        proc_caches_init();
        buffer_init();
+       CHECK;
        unnamed_dev_init();
        key_init();
        security_init();
        vfs_caches_init(num_physpages);
        radix_tree_init();
        signals_init();
+       CHECK;
        /* rootfs populating might need page-writeback */
        page_writeback_init();
 #ifdef CONFIG_PROC_FS
@@ -599,6 +615,7 @@ asmlinkage void __init start_kernel(void
 #endif
        cpuset_init();
        taskstats_init_early();
+       CHECK;
        delayacct_init();
 
        check_bugs();
@@ -609,7 +626,7 @@ asmlinkage void __init start_kernel(void
        rest_init();
 }
 
-static int __initdata initcall_debug;
+static int __initdata initcall_debug = 1;
 
 static int __init initcall_debug_setup(char *str)
 {
@@ -639,7 +656,11 @@ static void __init do_initcalls(void)
                        printk("\n");
                }
 
+               CHECK;
+
                result = (*call)();
+               
+               CHECK;
 
                if (result && result != -ENODEV && initcall_debug) {
                        sprintf(msgbuf, "error code %d", result);
@@ -725,21 +746,32 @@ static int init(void * unused)
 
        smp_prepare_cpus(max_cpus);
 
+       CHECK;
+
        do_pre_smp_initcalls();
 
        smp_init();
+
+       CHECK;
+
        sched_init_smp();
 
        cpuset_init_smp();
 
+       CHECK;
+
        /*
         * Do this before initcalls, because some drivers want to access
         * firmware files.
         */
        populate_rootfs();
 
+       CHECK;
+
        do_basic_setup();
 
+       CHECK;
+
        /*
         * check if there is an early userspace init.  If yes, let it do all
         * the work
Index: linux-2.6.19-rc1-hack/net/xfrm/xfrm_policy.c
===================================================================
--- linux-2.6.19-rc1-hack.orig/net/xfrm/xfrm_policy.c
+++ linux-2.6.19-rc1-hack/net/xfrm/xfrm_policy.c
@@ -39,6 +39,16 @@ EXPORT_SYMBOL(xfrm_policy_count);
 static DEFINE_RWLOCK(xfrm_policy_afinfo_lock);
 static struct xfrm_policy_afinfo *xfrm_policy_afinfo[NPROTO];
 
+void bugcheck(char *where, int line)
+{
+       int i;
+       for (i = 0; i < NPROTO; i++)
+               if (xfrm_policy_afinfo[i] == (void *)-1UL) {
+                       printk("afinfo corrupted at %s:%d\n",where,line);
+                       return;
+               }
+}
+
 static kmem_cache_t *xfrm_dst_cache __read_mostly;
 
 static struct work_struct xfrm_policy_gc_work;
-
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