*/
#include <mach_assert.h>
-#include <mach_kdb.h>
-#include <mach_kgdb.h>
#include <mach_kdp.h>
#include <kern/cpu_number.h>
#include <kdp/kdp_udp.h>
#endif
-#ifdef __ppc__
-#include <ppc/Firmware.h>
-#include <ppc/low_trace.h>
-#endif
-
#if defined(__i386__) || defined(__x86_64__)
#include <i386/cpu_threads.h>
#include <i386/pmCPU.h>
#endif
#include <IOKit/IOPlatformExpert.h>
+#include <machine/pal_routines.h>
#include <sys/kdebug.h>
#include <libkern/OSKextLibPrivate.h>
+#include <libkern/OSAtomic.h>
+#include <libkern/kernel_mach_header.h>
+#include <uuid/uuid.h>
unsigned int halt_in_debugger = 0;
unsigned int switch_debugger = 0;
unsigned int debug_buf_size = sizeof(debug_buf);
static char model_name[64];
+/* uuid_string_t */ char kernel_uuid[37];
+
+static spl_t panic_prologue(const char *str);
+static void panic_epilogue(spl_t s);
struct pasc {
unsigned a: 7;
void
panic_init(void)
{
+ unsigned long uuidlen = 0;
+ void *uuid;
+
+ uuid = getuuidfromheader(&_mh_execute_header, &uuidlen);
+ if ((uuid != NULL) && (uuidlen == sizeof(uuid_t))) {
+ uuid_unparse_upper(*(uuid_t *)uuid, kernel_uuid);
+ }
+
simple_lock_init(&panic_lock, 0);
panic_is_inited = 1;
panic_caller = 0;
void _consume_panic_args(int a __unused, ...)
{
- panic(NULL);
+ panic("panic");
}
-void
-panic(const char *str, ...)
+static spl_t
+panic_prologue(const char *str)
{
- va_list listp;
spl_t s;
- thread_t thread;
- wait_queue_t wq;
-
- if (kdebug_enable)
+ if (kdebug_enable) {
+ ml_set_interrupts_enabled(TRUE);
kdbg_dump_trace_to_file("/var/tmp/panic.trace");
+ }
s = splhigh();
disable_preemption();
- panic_safe();
+#if defined(__i386__) || defined(__x86_64__)
+ /* Attempt to display the unparsed panic string */
+ const char *tstr = str;
-#ifdef __ppc__
- lastTrace = LLTraceSet(0); /* Disable low-level tracing */
+ kprintf("Panic initiated, string: ");
+ while (tstr && *tstr)
+ kprintf("%c", *tstr++);
+ kprintf("\n");
#endif
- thread = current_thread(); /* Get failing thread */
- wq = thread->wait_queue; /* Save the old value */
- thread->wait_queue = NULL; /* Clear the wait so we do not get double panics when we try locks */
+ panic_safe();
if( logPanicDataToScreen )
disable_debug_output = FALSE;
debug_mode = TRUE;
- /* panic_caller is initialized to 0. If set, don't change it */
- if ( ! panic_caller )
- panic_caller = (unsigned long)(char *)__builtin_return_address(0);
-
restart:
PANIC_LOCK();
+
if (panicstr) {
if (cpu_number() != paniccpu) {
PANIC_UNLOCK();
panicwait = 1;
PANIC_UNLOCK();
- kdb_printf("panic(cpu %d caller 0x%lx): ", (unsigned) paniccpu, panic_caller);
- if (str) {
- va_start(listp, str);
- _doprnt(str, &listp, consdebug_putc, 0);
- va_end(listp);
- }
- kdb_printf("\n");
+ return(s);
+}
- /*
- * Release panicwait indicator so that other cpus may call Debugger().
- */
- panicwait = 0;
- Debugger("panic");
+
+static void
+panic_epilogue(spl_t s)
+{
/*
* Release panicstr so that we can handle normally other panics.
*/
PANIC_LOCK();
panicstr = (char *)0;
PANIC_UNLOCK();
- thread->wait_queue = wq; /* Restore the wait queue */
if (return_on_panic) {
panic_normal();
splx(s);
return;
}
-
kdb_printf("panic: We are hanging here...\n");
panic_stop();
/* NOTREACHED */
}
+void
+panic(const char *str, ...)
+{
+ va_list listp;
+ spl_t s;
+
+ /* panic_caller is initialized to 0. If set, don't change it */
+ if ( ! panic_caller )
+ panic_caller = (unsigned long)(char *)__builtin_return_address(0);
+
+ s = panic_prologue(str);
+ kdb_printf("panic(cpu %d caller 0x%lx): ", (unsigned) paniccpu, panic_caller);
+ if (str) {
+ va_start(listp, str);
+ _doprnt(str, &listp, consdebug_putc, 0);
+ va_end(listp);
+ }
+ kdb_printf("\n");
+
+ /*
+ * Release panicwait indicator so that other cpus may call Debugger().
+ */
+ panicwait = 0;
+ Debugger("panic");
+ panic_epilogue(s);
+}
+
+void
+panic_context(unsigned int reason, void *ctx, const char *str, ...)
+{
+ va_list listp;
+ spl_t s;
+
+ /* panic_caller is initialized to 0. If set, don't change it */
+ if ( ! panic_caller )
+ panic_caller = (unsigned long)(char *)__builtin_return_address(0);
+
+ s = panic_prologue(str);
+ kdb_printf("panic(cpu %d caller 0x%lx): ", (unsigned) paniccpu, panic_caller);
+ if (str) {
+ va_start(listp, str);
+ _doprnt(str, &listp, consdebug_putc, 0);
+ va_end(listp);
+ }
+ kdb_printf("\n");
+
+ /*
+ * Release panicwait indicator so that other cpus may call Debugger().
+ */
+ panicwait = 0;
+ DebuggerWithContext(reason, ctx, "panic");
+ panic_epilogue(s);
+}
+
void
log(__unused int level, char *fmt, ...)
{
}
/* In-place packing routines -- inefficient, but they're called at most once.
+ * Assumes "buflen" is a multiple of 8.
*/
int packA(char *inbuf, uint32_t length, uint32_t buflen)
unsigned int i, j = 0;
pasc_t pack;
- length = MIN(((length & ~7) +8), buflen);
+ length = MIN(((length + 7) & ~7), buflen);
for (i = 0; i < length; i+=8)
{
bcopy ((char *) &pack, inbuf + j, 7);
j += 7;
}
- return ((length * 7)/8);
+ return j;
}
void unpackA(char *inbuf, uint32_t length)
if (ml_nofault_copy((vm_offset_t) &model_name, (vm_offset_t) &tmp_model_name, sizeof(model_name)) != sizeof(model_name))
return;
- model_name[sizeof(model_name) - 1] = '\0';
+ tmp_model_name[sizeof(tmp_model_name) - 1] = '\0';
- if (model_name[0] != 0)
- kdb_printf("System model name: %s\n", model_name);
+ if (tmp_model_name[0] != 0)
+ kdb_printf("System model name: %s\n", tmp_model_name);
+}
+
+static void panic_display_kernel_uuid(void) {
+ char tmp_kernel_uuid[sizeof(kernel_uuid)];
+
+ if (ml_nofault_copy((vm_offset_t) &kernel_uuid, (vm_offset_t) &tmp_kernel_uuid, sizeof(kernel_uuid)) != sizeof(kernel_uuid))
+ return;
+
+ if (tmp_kernel_uuid[0] != '\0')
+ kdb_printf("Kernel UUID: %s\n", tmp_kernel_uuid);
+}
+
+static void panic_display_kernel_aslr(void) {
+#if defined(__x86_64__)
+ if (vm_kernel_slide) {
+ kdb_printf("Kernel slide: 0x%016lx\n", vm_kernel_slide);
+ kdb_printf("Kernel text base: %p\n", (void *) vm_kernel_stext);
+ }
+#endif
}
static void panic_display_uptime(void) {
extern const char version[];
extern char osversion[];
+static volatile uint32_t config_displayed = 0;
+
__private_extern__ void panic_display_system_configuration(void) {
- static boolean_t config_displayed = FALSE;
panic_display_process_name();
- if (config_displayed == FALSE) {
+ if (OSCompareAndSwap(0, 1, &config_displayed)) {
+ char buf[256];
+ if (strlcpy(buf, PE_boot_args(), sizeof(buf)))
+ kdb_printf("Boot args: %s\n", buf);
kdb_printf("\nMac OS version:\n%s\n",
(osversion[0] != 0) ? osversion : "Not yet set");
kdb_printf("\nKernel version:\n%s\n",version);
+ panic_display_kernel_uuid();
+ panic_display_kernel_aslr();
+ panic_display_pal_info();
panic_display_model_name();
panic_display_uptime();
- config_displayed = TRUE;
panic_display_zprint();
+#if CONFIG_ZLEAKS
+ panic_display_ztrace();
+#endif /* CONFIG_ZLEAKS */
kext_dump_panic_lists(&kdb_log);
}
}
extern zone_t first_zone;
extern unsigned int num_zones, stack_total;
+extern unsigned long long stack_allocs;
#if defined(__i386__) || defined (__x86_64__)
extern unsigned int inuse_ptepages_count;
+extern long long alloc_ptepages_count;
#endif
extern boolean_t panic_include_zprint;
}
}
+#if CONFIG_ZLEAKS
+extern boolean_t panic_include_ztrace;
+extern struct ztrace* top_ztrace;
+/*
+ * Prints the backtrace most suspected of being a leaker, if we paniced in the zone allocator.
+ * top_ztrace and panic_include_ztrace comes from osfmk/kern/zalloc.c
+ */
+__private_extern__ void panic_display_ztrace(void)
+{
+ if(panic_include_ztrace == TRUE) {
+ unsigned int i = 0;
+ struct ztrace top_ztrace_copy;
+
+ /* Make sure not to trip another panic if there's something wrong with memory */
+ if(ml_nofault_copy((vm_offset_t)top_ztrace, (vm_offset_t)&top_ztrace_copy, sizeof(struct ztrace)) == sizeof(struct ztrace)) {
+ kdb_printf("\nBacktrace suspected of leaking: (outstanding bytes: %lu)\n", (uintptr_t)top_ztrace_copy.zt_size);
+ /* Print the backtrace addresses */
+ for (i = 0; (i < top_ztrace_copy.zt_depth && i < MAX_ZTRACE_DEPTH) ; i++) {
+ kdb_printf("%p\n", top_ztrace_copy.zt_stack[i]);
+ }
+ /* Print any kexts in that backtrace, along with their link addresses so we can properly blame them */
+ kmod_panic_dump((vm_offset_t *)&top_ztrace_copy.zt_stack[0], top_ztrace_copy.zt_depth);
+ }
+ else {
+ kdb_printf("\nCan't access top_ztrace...\n");
+ }
+ kdb_printf("\n");
+ }
+}
+#endif /* CONFIG_ZLEAKS */
+
#if !MACH_KDP
static struct ether_addr kdp_current_mac_address = {{0, 0, 0, 0, 0, 0}};
projects / apple / xnu.git / blobdiff