merge linus into test branch

3 files changed, 8 insertions, 1314 deletions

diff --git a/kernel/Makefile b/kernel/Makefile
index 5e3f3b7..14f4d45 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -31,7 +31,6 @@ obj-$(CONFIG_PROVE_LOCKING) += spinlock.o
 obj-$(CONFIG_UID16) += uid16.o
 obj-$(CONFIG_MODULES) += module.o
 obj-$(CONFIG_KALLSYMS) += kallsyms.o
-obj-$(CONFIG_STACK_UNWIND) += unwind.o
 obj-$(CONFIG_PM) += power/
 obj-$(CONFIG_BSD_PROCESS_ACCT) += acct.o
 obj-$(CONFIG_KEXEC) += kexec.o
diff --git a/kernel/unwind.c b/kernel/unwind.c
deleted file mode 100644
index 09c2613..0000000
--- a/kernel/unwind.c
+++ /dev/null
@@ -1,1305 +0,0 @@
-/*
- * Copyright (C) 2002-2006 Novell, Inc.
- *	Jan Beulich <jbeulich@novell.com>
- * This code is released under version 2 of the GNU GPL.
- *
- * A simple API for unwinding kernel stacks.  This is used for
- * debugging and error reporting purposes.  The kernel doesn't need
- * full-blown stack unwinding with all the bells and whistles, so there
- * is not much point in implementing the full Dwarf2 unwind API.
- */
-
-#include <linux/unwind.h>
-#include <linux/module.h>
-#include <linux/bootmem.h>
-#include <linux/sort.h>
-#include <linux/stop_machine.h>
-#include <linux/uaccess.h>
-#include <asm/sections.h>
-#include <asm/uaccess.h>
-#include <asm/unaligned.h>
-
-extern const char __start_unwind[], __end_unwind[];
-extern const u8 __start_unwind_hdr[], __end_unwind_hdr[];
-
-#define MAX_STACK_DEPTH 8
-
-#define EXTRA_INFO(f) { \
-		BUILD_BUG_ON_ZERO(offsetof(struct unwind_frame_info, f) \
-		                  % FIELD_SIZEOF(struct unwind_frame_info, f)) \
-		+ offsetof(struct unwind_frame_info, f) \
-		  / FIELD_SIZEOF(struct unwind_frame_info, f), \
-		FIELD_SIZEOF(struct unwind_frame_info, f) \
-	}
-#define PTREGS_INFO(f) EXTRA_INFO(regs.f)
-
-static const struct {
-	unsigned offs:BITS_PER_LONG / 2;
-	unsigned width:BITS_PER_LONG / 2;
-} reg_info[] = {
-	UNW_REGISTER_INFO
-};
-
-#undef PTREGS_INFO
-#undef EXTRA_INFO
-
-#ifndef REG_INVALID
-#define REG_INVALID(r) (reg_info[r].width == 0)
-#endif
-
-#define DW_CFA_nop                          0x00
-#define DW_CFA_set_loc                      0x01
-#define DW_CFA_advance_loc1                 0x02
-#define DW_CFA_advance_loc2                 0x03
-#define DW_CFA_advance_loc4                 0x04
-#define DW_CFA_offset_extended              0x05
-#define DW_CFA_restore_extended             0x06
-#define DW_CFA_undefined                    0x07
-#define DW_CFA_same_value                   0x08
-#define DW_CFA_register                     0x09
-#define DW_CFA_remember_state               0x0a
-#define DW_CFA_restore_state                0x0b
-#define DW_CFA_def_cfa                      0x0c
-#define DW_CFA_def_cfa_register             0x0d
-#define DW_CFA_def_cfa_offset               0x0e
-#define DW_CFA_def_cfa_expression           0x0f
-#define DW_CFA_expression                   0x10
-#define DW_CFA_offset_extended_sf           0x11
-#define DW_CFA_def_cfa_sf                   0x12
-#define DW_CFA_def_cfa_offset_sf            0x13
-#define DW_CFA_val_offset                   0x14
-#define DW_CFA_val_offset_sf                0x15
-#define DW_CFA_val_expression               0x16
-#define DW_CFA_lo_user                      0x1c
-#define DW_CFA_GNU_window_save              0x2d
-#define DW_CFA_GNU_args_size                0x2e
-#define DW_CFA_GNU_negative_offset_extended 0x2f
-#define DW_CFA_hi_user                      0x3f
-
-#define DW_EH_PE_FORM     0x07
-#define DW_EH_PE_native   0x00
-#define DW_EH_PE_leb128   0x01
-#define DW_EH_PE_data2    0x02
-#define DW_EH_PE_data4    0x03
-#define DW_EH_PE_data8    0x04
-#define DW_EH_PE_signed   0x08
-#define DW_EH_PE_ADJUST   0x70
-#define DW_EH_PE_abs      0x00
-#define DW_EH_PE_pcrel    0x10
-#define DW_EH_PE_textrel  0x20
-#define DW_EH_PE_datarel  0x30
-#define DW_EH_PE_funcrel  0x40
-#define DW_EH_PE_aligned  0x50
-#define DW_EH_PE_indirect 0x80
-#define DW_EH_PE_omit     0xff
-
-typedef unsigned long uleb128_t;
-typedef   signed long sleb128_t;
-#define sleb128abs __builtin_labs
-
-static struct unwind_table {
-	struct {
-		unsigned long pc;
-		unsigned long range;
-	} core, init;
-	const void *address;
-	unsigned long size;
-	const unsigned char *header;
-	unsigned long hdrsz;
-	struct unwind_table *link;
-	const char *name;
-} root_table;
-
-struct unwind_item {
-	enum item_location {
-		Nowhere,
-		Memory,
-		Register,
-		Value
-	} where;
-	uleb128_t value;
-};
-
-struct unwind_state {
-	uleb128_t loc, org;
-	const u8 *cieStart, *cieEnd;
-	uleb128_t codeAlign;
-	sleb128_t dataAlign;
-	struct cfa {
-		uleb128_t reg, offs;
-	} cfa;
-	struct unwind_item regs[ARRAY_SIZE(reg_info)];
-	unsigned stackDepth:8;
-	unsigned version:8;
-	const u8 *label;
-	const u8 *stack[MAX_STACK_DEPTH];
-};
-
-static const struct cfa badCFA = { ARRAY_SIZE(reg_info), 1 };
-
-static unsigned unwind_debug;
-static int __init unwind_debug_setup(char *s)
-{
-	unwind_debug = simple_strtoul(s, NULL, 0);
-	return 1;
-}
-__setup("unwind_debug=", unwind_debug_setup);
-#define dprintk(lvl, fmt, args...) \
-	((void)(lvl > unwind_debug \
-	 || printk(KERN_DEBUG "unwind: " fmt "\n", ##args)))
-
-static struct unwind_table *find_table(unsigned long pc)
-{
-	struct unwind_table *table;
-
-	for (table = &root_table; table; table = table->link)
-		if ((pc >= table->core.pc
-		     && pc < table->core.pc + table->core.range)
-		    || (pc >= table->init.pc
-		        && pc < table->init.pc + table->init.range))
-			break;
-
-	return table;
-}
-
-static unsigned long read_pointer(const u8 **pLoc,
-                                  const void *end,
-                                  signed ptrType,
-                                  unsigned long text_base,
-                                  unsigned long data_base);
-
-static void init_unwind_table(struct unwind_table *table,
-                              const char *name,
-                              const void *core_start,
-                              unsigned long core_size,
-                              const void *init_start,
-                              unsigned long init_size,
-                              const void *table_start,
-                              unsigned long table_size,
-                              const u8 *header_start,
-                              unsigned long header_size)
-{
-	const u8 *ptr = header_start + 4;
-	const u8 *end = header_start + header_size;
-
-	table->core.pc = (unsigned long)core_start;
-	table->core.range = core_size;
-	table->init.pc = (unsigned long)init_start;
-	table->init.range = init_size;
-	table->address = table_start;
-	table->size = table_size;
-	/* See if the linker provided table looks valid. */
-	if (header_size <= 4
-	    || header_start[0] != 1
-	    || (void *)read_pointer(&ptr, end, header_start[1], 0, 0)
-	       != table_start
-	    || !read_pointer(&ptr, end, header_start[2], 0, 0)
-	    || !read_pointer(&ptr, end, header_start[3], 0,
-	                     (unsigned long)header_start)
-	    || !read_pointer(&ptr, end, header_start[3], 0,
-	                     (unsigned long)header_start))
-		header_start = NULL;
-	table->hdrsz = header_size;
-	smp_wmb();
-	table->header = header_start;
-	table->link = NULL;
-	table->name = name;
-}
-
-void __init unwind_init(void)
-{
-	init_unwind_table(&root_table, "kernel",
-	                  _text, _end - _text,
-	                  NULL, 0,
-	                  __start_unwind, __end_unwind - __start_unwind,
-	                  __start_unwind_hdr, __end_unwind_hdr - __start_unwind_hdr);
-}
-
-static const u32 bad_cie, not_fde;
-static const u32 *cie_for_fde(const u32 *fde, const struct unwind_table *);
-static signed fde_pointer_type(const u32 *cie);
-
-struct eh_frame_hdr_table_entry {
-	unsigned long start, fde;
-};
-
-static int cmp_eh_frame_hdr_table_entries(const void *p1, const void *p2)
-{
-	const struct eh_frame_hdr_table_entry *e1 = p1;
-	const struct eh_frame_hdr_table_entry *e2 = p2;
-
-	return (e1->start > e2->start) - (e1->start < e2->start);
-}
-
-static void swap_eh_frame_hdr_table_entries(void *p1, void *p2, int size)
-{
-	struct eh_frame_hdr_table_entry *e1 = p1;
-	struct eh_frame_hdr_table_entry *e2 = p2;
-	unsigned long v;
-
-	v = e1->start;
-	e1->start = e2->start;
-	e2->start = v;
-	v = e1->fde;
-	e1->fde = e2->fde;
-	e2->fde = v;
-}
-
-static void __init setup_unwind_table(struct unwind_table *table,
-					void *(*alloc)(unsigned long))
-{
-	const u8 *ptr;
-	unsigned long tableSize = table->size, hdrSize;
-	unsigned n;
-	const u32 *fde;
-	struct {
-		u8 version;
-		u8 eh_frame_ptr_enc;
-		u8 fde_count_enc;
-		u8 table_enc;
-		unsigned long eh_frame_ptr;
-		unsigned int fde_count;
-		struct eh_frame_hdr_table_entry table[];
-	} __attribute__((__packed__)) *header;
-
-	if (table->header)
-		return;
-
-	if (table->hdrsz)
-		printk(KERN_WARNING ".eh_frame_hdr for '%s' present but unusable\n",
-		       table->name);
-
-	if (tableSize & (sizeof(*fde) - 1))
-		return;
-
-	for (fde = table->address, n = 0;
-	     tableSize > sizeof(*fde) && tableSize - sizeof(*fde) >= *fde;
-	     tableSize -= sizeof(*fde) + *fde, fde += 1 + *fde / sizeof(*fde)) {
-		const u32 *cie = cie_for_fde(fde, table);
-		signed ptrType;
-
-		if (cie == &not_fde)
-			continue;
-		if (cie == NULL
-		    || cie == &bad_cie
-		    || (ptrType = fde_pointer_type(cie)) < 0)
-			return;
-		ptr = (const u8 *)(fde + 2);
-		if (!read_pointer(&ptr,
-		                  (const u8 *)(fde + 1) + *fde,
-		                  ptrType, 0, 0))
-			return;
-		++n;
-	}
-
-	if (tableSize || !n)
-		return;
-
-	hdrSize = 4 + sizeof(unsigned long) + sizeof(unsigned int)
-	        + 2 * n * sizeof(unsigned long);
-	dprintk(2, "Binary lookup table size for %s: %lu bytes", table->name, hdrSize);
-	header = alloc(hdrSize);
-	if (!header)
-		return;
-	header->version          = 1;
-	header->eh_frame_ptr_enc = DW_EH_PE_abs|DW_EH_PE_native;
-	header->fde_count_enc    = DW_EH_PE_abs|DW_EH_PE_data4;
-	header->table_enc        = DW_EH_PE_abs|DW_EH_PE_native;
-	put_unaligned((unsigned long)table->address, &header->eh_frame_ptr);
-	BUILD_BUG_ON(offsetof(typeof(*header), fde_count)
-	             % __alignof(typeof(header->fde_count)));
-	header->fde_count        = n;
-
-	BUILD_BUG_ON(offsetof(typeof(*header), table)
-	             % __alignof(typeof(*header->table)));
-	for (fde = table->address, tableSize = table->size, n = 0;
-	     tableSize;
-	     tableSize -= sizeof(*fde) + *fde, fde += 1 + *fde / sizeof(*fde)) {
-		const u32 *cie = fde + 1 - fde[1] / sizeof(*fde);
-
-		if (!fde[1])
-			continue; /* this is a CIE */
-		ptr = (const u8 *)(fde + 2);
-		header->table[n].start = read_pointer(&ptr,
-		                                      (const u8 *)(fde + 1) + *fde,
-		                                      fde_pointer_type(cie), 0, 0);
-		header->table[n].fde = (unsigned long)fde;
-		++n;
-	}
-	WARN_ON(n != header->fde_count);
-
-	sort(header->table,
-	     n,
-	     sizeof(*header->table),
-	     cmp_eh_frame_hdr_table_entries,
-	     swap_eh_frame_hdr_table_entries);
-
-	table->hdrsz = hdrSize;
-	smp_wmb();
-	table->header = (const void *)header;
-}
-
-static void *__init balloc(unsigned long sz)
-{
-	return __alloc_bootmem_nopanic(sz,
-	                               sizeof(unsigned int),
-	                               __pa(MAX_DMA_ADDRESS));
-}
-
-void __init unwind_setup(void)
-{
-	setup_unwind_table(&root_table, balloc);
-}
-
-#ifdef CONFIG_MODULES
-
-static struct unwind_table *last_table;
-
-/* Must be called with module_mutex held. */
-void *unwind_add_table(struct module *module,
-                       const void *table_start,
-                       unsigned long table_size)
-{
-	struct unwind_table *table;
-
-	if (table_size <= 0)
-		return NULL;
-
-	table = kmalloc(sizeof(*table), GFP_KERNEL);
-	if (!table)
-		return NULL;
-
-	init_unwind_table(table, module->name,
-	                  module->module_core, module->core_size,
-	                  module->module_init, module->init_size,
-	                  table_start, table_size,
-	                  NULL, 0);
-
-	if (last_table)
-		last_table->link = table;
-	else
-		root_table.link = table;
-	last_table = table;
-
-	return table;
-}
-
-struct unlink_table_info
-{
-	struct unwind_table *table;
-	int init_only;
-};
-
-static int unlink_table(void *arg)
-{
-	struct unlink_table_info *info = arg;
-	struct unwind_table *table = info->table, *prev;
-
-	for (prev = &root_table; prev->link && prev->link != table; prev = prev->link)
-		;
-
-	if (prev->link) {
-		if (info->init_only) {
-			table->init.pc = 0;
-			table->init.range = 0;
-			info->table = NULL;
-		} else {
-			prev->link = table->link;
-			if (!prev->link)
-				last_table = prev;
-		}
-	} else
-		info->table = NULL;
-
-	return 0;
-}
-
-/* Must be called with module_mutex held. */
-void unwind_remove_table(void *handle, int init_only)
-{
-	struct unwind_table *table = handle;
-	struct unlink_table_info info;
-
-	if (!table || table == &root_table)
-		return;
-
-	if (init_only && table == last_table) {
-		table->init.pc = 0;
-		table->init.range = 0;
-		return;
-	}
-
-	info.table = table;
-	info.init_only = init_only;
-	stop_machine_run(unlink_table, &info, NR_CPUS);
-
-	if (info.table)
-		kfree(table);
-}
-
-#endif /* CONFIG_MODULES */
-
-static uleb128_t get_uleb128(const u8 **pcur, const u8 *end)
-{
-	const u8 *cur = *pcur;
-	uleb128_t value;
-	unsigned shift;
-
-	for (shift = 0, value = 0; cur < end; shift += 7) {
-		if (shift + 7 > 8 * sizeof(value)
-		    && (*cur & 0x7fU) >= (1U << (8 * sizeof(value) - shift))) {
-			cur = end + 1;
-			break;
-		}
-		value |= (uleb128_t)(*cur & 0x7f) << shift;
-		if (!(*cur++ & 0x80))
-			break;
-	}
-	*pcur = cur;
-
-	return value;
-}
-
-static sleb128_t get_sleb128(const u8 **pcur, const u8 *end)
-{
-	const u8 *cur = *pcur;
-	sleb128_t value;
-	unsigned shift;
-
-	for (shift = 0, value = 0; cur < end; shift += 7) {
-		if (shift + 7 > 8 * sizeof(value)
-		    && (*cur & 0x7fU) >= (1U << (8 * sizeof(value) - shift))) {
-			cur = end + 1;
-			break;
-		}
-		value |= (sleb128_t)(*cur & 0x7f) << shift;
-		if (!(*cur & 0x80)) {
-			value |= -(*cur++ & 0x40) << shift;
-			break;
-		}
-	}
-	*pcur = cur;
-
-	return value;
-}
-
-static const u32 *cie_for_fde(const u32 *fde, const struct unwind_table *table)
-{
-	const u32 *cie;
-
-	if (!*fde || (*fde & (sizeof(*fde) - 1)))
-		return &bad_cie;
-	if (!fde[1])
-		return &not_fde; /* this is a CIE */
-	if ((fde[1] & (sizeof(*fde) - 1))
-	    || fde[1] > (unsigned long)(fde + 1) - (unsigned long)table->address)
-		return NULL; /* this is not a valid FDE */
-	cie = fde + 1 - fde[1] / sizeof(*fde);
-	if (*cie <= sizeof(*cie) + 4
-	    || *cie >= fde[1] - sizeof(*fde)
-	    || (*cie & (sizeof(*cie) - 1))
-	    || cie[1])
-		return NULL; /* this is not a (valid) CIE */
-	return cie;
-}
-
-static unsigned long read_pointer(const u8 **pLoc,
-                                  const void *end,
-                                  signed ptrType,
-                                  unsigned long text_base,
-                                  unsigned long data_base)
-{
-	unsigned long value = 0;
-	union {
-		const u8 *p8;
-		const u16 *p16u;
-		const s16 *p16s;
-		const u32 *p32u;
-		const s32 *p32s;
-		const unsigned long *pul;
-	} ptr;
-
-	if (ptrType < 0 || ptrType == DW_EH_PE_omit) {
-		dprintk(1, "Invalid pointer encoding %02X (%p,%p).", ptrType, *pLoc, end);
-		return 0;
-	}
-	ptr.p8 = *pLoc;
-	switch(ptrType & DW_EH_PE_FORM) {
-	case DW_EH_PE_data2:
-		if (end < (const void *)(ptr.p16u + 1)) {
-			dprintk(1, "Data16 overrun (%p,%p).", ptr.p8, end);
-			return 0;
-		}
-		if(ptrType & DW_EH_PE_signed)
-			value = get_unaligned(ptr.p16s++);
-		else
-			value = get_unaligned(ptr.p16u++);
-		break;
-	case DW_EH_PE_data4:
-#ifdef CONFIG_64BIT
-		if (end < (const void *)(ptr.p32u + 1)) {
-			dprintk(1, "Data32 overrun (%p,%p).", ptr.p8, end);
-			return 0;
-		}
-		if(ptrType & DW_EH_PE_signed)
-			value = get_unaligned(ptr.p32s++);
-		else
-			value = get_unaligned(ptr.p32u++);
-		break;
-	case DW_EH_PE_data8:
-		BUILD_BUG_ON(sizeof(u64) != sizeof(value));
-#else
-		BUILD_BUG_ON(sizeof(u32) != sizeof(value));
-#endif
-	case DW_EH_PE_native:
-		if (end < (const void *)(ptr.pul + 1)) {
-			dprintk(1, "DataUL overrun (%p,%p).", ptr.p8, end);
-			return 0;
-		}
-		value = get_unaligned(ptr.pul++);
-		break;
-	case DW_EH_PE_leb128:
-		BUILD_BUG_ON(sizeof(uleb128_t) > sizeof(value));
-		value = ptrType & DW_EH_PE_signed
-		        ? get_sleb128(&ptr.p8, end)
-		        : get_uleb128(&ptr.p8, end);
-		if ((const void *)ptr.p8 > end) {
-			dprintk(1, "DataLEB overrun (%p,%p).", ptr.p8, end);
-			return 0;
-		}
-		break;
-	default:
-		dprintk(2, "Cannot decode pointer type %02X (%p,%p).",
-		        ptrType, ptr.p8, end);
-		return 0;
-	}
-	switch(ptrType & DW_EH_PE_ADJUST) {
-	case DW_EH_PE_abs:
-		break;
-	case DW_EH_PE_pcrel:
-		value += (unsigned long)*pLoc;
-		break;
-	case DW_EH_PE_textrel:
-		if (likely(text_base)) {
-			value += text_base;
-			break;
-		}
-		dprintk(2, "Text-relative encoding %02X (%p,%p), but zero text base.",
-		        ptrType, *pLoc, end);
-		return 0;
-	case DW_EH_PE_datarel:
-		if (likely(data_base)) {
-			value += data_base;
-			break;
-		}
-		dprintk(2, "Data-relative encoding %02X (%p,%p), but zero data base.",
-		        ptrType, *pLoc, end);
-		return 0;
-	default:
-		dprintk(2, "Cannot adjust pointer type %02X (%p,%p).",
-		        ptrType, *pLoc, end);
-		return 0;
-	}
-	if ((ptrType & DW_EH_PE_indirect)
-	    && probe_kernel_address((unsigned long *)value, value)) {
-		dprintk(1, "Cannot read indirect value %lx (%p,%p).",
-		        value, *pLoc, end);
-		return 0;
-	}
-	*pLoc = ptr.p8;
-
-	return value;
-}
-
-static signed fde_pointer_type(const u32 *cie)
-{
-	const u8 *ptr = (const u8 *)(cie + 2);
-	unsigned version = *ptr;
-
-	if (version != 1)
-		return -1; /* unsupported */
-	if (*++ptr) {
-		const char *aug;
-		const u8 *end = (const u8 *)(cie + 1) + *cie;
-		uleb128_t len;
-
-		/* check if augmentation size is first (and thus present) */
-		if (*ptr != 'z')
-			return -1;
-		/* check if augmentation string is nul-terminated */
-		if ((ptr = memchr(aug = (const void *)ptr, 0, end - ptr)) == NULL)
-			return -1;
-		++ptr; /* skip terminator */
-		get_uleb128(&ptr, end); /* skip code alignment */
-		get_sleb128(&ptr, end); /* skip data alignment */
-		/* skip return address column */
-		version <= 1 ? (void)++ptr : (void)get_uleb128(&ptr, end);
-		len = get_uleb128(&ptr, end); /* augmentation length */
-		if (ptr + len < ptr || ptr + len > end)
-			return -1;
-		end = ptr + len;
-		while (*++aug) {
-			if (ptr >= end)
-				return -1;
-			switch(*aug) {
-			case 'L':
-				++ptr;
-				break;
-			case 'P': {
-					signed ptrType = *ptr++;
-
-					if (!read_pointer(&ptr, end, ptrType, 0, 0)
-					    || ptr > end)
-						return -1;
-				}
-				break;
-			case 'R':
-				return *ptr;
-			default:
-				return -1;
-			}
-		}
-	}
-	return DW_EH_PE_native|DW_EH_PE_abs;
-}
-
-static int advance_loc(unsigned long delta, struct unwind_state *state)
-{
-	state->loc += delta * state->codeAlign;
-
-	return delta > 0;
-}
-
-static void set_rule(uleb128_t reg,
-                     enum item_location where,
-                     uleb128_t value,
-                     struct unwind_state *state)
-{
-	if (reg < ARRAY_SIZE(state->regs)) {
-		state->regs[reg].where = where;
-		state->regs[reg].value = value;
-	}
-}
-
-static int processCFI(const u8 *start,
-                      const u8 *end,
-                      unsigned long targetLoc,
-                      signed ptrType,
-                      struct unwind_state *state)
-{
-	union {
-		const u8 *p8;
-		const u16 *p16;
-		const u32 *p32;
-	} ptr;
-	int result = 1;
-
-	if (start != state->cieStart) {
-		state->loc = state->org;
-		result = processCFI(state->cieStart, state->cieEnd, 0, ptrType, state);
-		if (targetLoc == 0 && state->label == NULL)
-			return result;
-	}
-	for (ptr.p8 = start; result && ptr.p8 < end; ) {
-		switch(*ptr.p8 >> 6) {
-			uleb128_t value;
-
-		case 0:
-			switch(*ptr.p8++) {
-			case DW_CFA_nop:
-				break;
-			case DW_CFA_set_loc:
-				state->loc = read_pointer(&ptr.p8, end, ptrType, 0, 0);
-				if (state->loc == 0)
-					result = 0;
-				break;
-			case DW_CFA_advance_loc1:
-				result = ptr.p8 < end && advance_loc(*ptr.p8++, state);
-				break;
-			case DW_CFA_advance_loc2:
-				result = ptr.p8 <= end + 2
-				         && advance_loc(*ptr.p16++, state);
-				break;
-			case DW_CFA_advance_loc4:
-				result = ptr.p8 <= end + 4
-				         && advance_loc(*ptr.p32++, state);
-				break;
-			case DW_CFA_offset_extended:
-				value = get_uleb128(&ptr.p8, end);
-				set_rule(value, Memory, get_uleb128(&ptr.p8, end), state);
-				break;
-			case DW_CFA_val_offset:
-				value = get_uleb128(&ptr.p8, end);
-				set_rule(value, Value, get_uleb128(&ptr.p8, end), state);
-				break;
-			case DW_CFA_offset_extended_sf:
-				value = get_uleb128(&ptr.p8, end);
-				set_rule(value, Memory, get_sleb128(&ptr.p8, end), state);
-				break;
-			case DW_CFA_val_offset_sf:
-				value = get_uleb128(&ptr.p8, end);
-				set_rule(value, Value, get_sleb128(&ptr.p8, end), state);
-				break;
-			case DW_CFA_restore_extended:
-			case DW_CFA_undefined:
-			case DW_CFA_same_value:
-				set_rule(get_uleb128(&ptr.p8, end), Nowhere, 0, state);
-				break;
-			case DW_CFA_register:
-				value = get_uleb128(&ptr.p8, end);
-				set_rule(value,
-				         Register,
-				         get_uleb128(&ptr.p8, end), state);
-				break;
-			case DW_CFA_remember_state:
-				if (ptr.p8 == state->label) {
-					state->label = NULL;
-					return 1;
-				}
-				if (state->stackDepth >= MAX_STACK_DEPTH) {
-					dprintk(1, "State stack overflow (%p,%p).", ptr.p8, end);
-					return 0;
-				}
-				state->stack[state->stackDepth++] = ptr.p8;
-				break;
-			case DW_CFA_restore_state:
-				if (state->stackDepth) {
-					const uleb128_t loc = state->loc;
-					const u8 *label = state->label;
-
-					state->label = state->stack[state->stackDepth - 1];
-					memcpy(&state->cfa, &badCFA, sizeof(state->cfa));
-					memset(state->regs, 0, sizeof(state->regs));
-					state->stackDepth = 0;
-					result = processCFI(start, end, 0, ptrType, state);
-					state->loc = loc;
-					state->label = label;
-				} else {
-					dprintk(1, "State stack underflow (%p,%p).", ptr.p8, end);
-					return 0;
-				}
-				break;
-			case DW_CFA_def_cfa:
-				state->cfa.reg = get_uleb128(&ptr.p8, end);
-				/*nobreak*/
-			case DW_CFA_def_cfa_offset:
-				state->cfa.offs = get_uleb128(&ptr.p8, end);
-				break;
-			case DW_CFA_def_cfa_sf:
-				state->cfa.reg = get_uleb128(&ptr.p8, end);
-				/*nobreak*/
-			case DW_CFA_def_cfa_offset_sf:
-				state->cfa.offs = get_sleb128(&ptr.p8, end)
-				                  * state->dataAlign;
-				break;
-			case DW_CFA_def_cfa_register:
-				state->cfa.reg = get_uleb128(&ptr.p8, end);
-				break;
-			/*todo case DW_CFA_def_cfa_expression: */
-			/*todo case DW_CFA_expression: */
-			/*todo case DW_CFA_val_expression: */
-			case DW_CFA_GNU_args_size:
-				get_uleb128(&ptr.p8, end);
-				break;
-			case DW_CFA_GNU_negative_offset_extended:
-				value = get_uleb128(&ptr.p8, end);
-				set_rule(value,
-				         Memory,
-				         (uleb128_t)0 - get_uleb128(&ptr.p8, end), state);
-				break;
-			case DW_CFA_GNU_window_save:
-			default:
-				dprintk(1, "Unrecognized CFI op %02X (%p,%p).", ptr.p8[-1], ptr.p8 - 1, end);
-				result = 0;
-				break;
-			}
-			break;
-		case 1:
-			result = advance_loc(*ptr.p8++ & 0x3f, state);
-			break;
-		case 2:
-			value = *ptr.p8++ & 0x3f;
-			set_rule(value, Memory, get_uleb128(&ptr.p8, end), state);
-			break;
-		case 3:
-			set_rule(*ptr.p8++ & 0x3f, Nowhere, 0, state);
-			break;
-		}
-		if (ptr.p8 > end) {
-			dprintk(1, "Data overrun (%p,%p).", ptr.p8, end);
-			result = 0;
-		}
-		if (result && targetLoc != 0 && targetLoc < state->loc)
-			return 1;
-	}
-
-	if (result && ptr.p8 < end)
-		dprintk(1, "Data underrun (%p,%p).", ptr.p8, end);
-
-	return result
-	   && ptr.p8 == end
-	   && (targetLoc == 0
-	    || (/*todo While in theory this should apply, gcc in practice omits
-	          everything past the function prolog, and hence the location
-	          never reaches the end of the function.
-	        targetLoc < state->loc &&*/ state->label == NULL));
-}
-
-/* Unwind to previous to frame.  Returns 0 if successful, negative
- * number in case of an error. */
-int unwind(struct unwind_frame_info *frame)
-{
-#define FRAME_REG(r, t) (((t *)frame)[reg_info[r].offs])
-	const u32 *fde = NULL, *cie = NULL;
-	const u8 *ptr = NULL, *end = NULL;
-	unsigned long pc = UNW_PC(frame) - frame->call_frame, sp;
-	unsigned long startLoc = 0, endLoc = 0, cfa;
-	unsigned i;
-	signed ptrType = -1;
-	uleb128_t retAddrReg = 0;
-	const struct unwind_table *table;
-	struct unwind_state state;
-
-	if (UNW_PC(frame) == 0)
-		return -EINVAL;
-	if ((table = find_table(pc)) != NULL
-	    && !(table->size & (sizeof(*fde) - 1))) {
-		const u8 *hdr = table->header;
-		unsigned long tableSize;
-
-		smp_rmb();
-		if (hdr && hdr[0] == 1) {
-			switch(hdr[3] & DW_EH_PE_FORM) {
-			case DW_EH_PE_native: tableSize = sizeof(unsigned long); break;
-			case DW_EH_PE_data2: tableSize = 2; break;
-			case DW_EH_PE_data4: tableSize = 4; break;
-			case DW_EH_PE_data8: tableSize = 8; break;
-			default: tableSize = 0; break;
-			}
-			ptr = hdr + 4;
-			end = hdr + table->hdrsz;
-			if (tableSize
-			    && read_pointer(&ptr, end, hdr[1], 0, 0)
-			       == (unsigned long)table->address
-			    && (i = read_pointer(&ptr, end, hdr[2], 0, 0)) > 0
-			    && i == (end - ptr) / (2 * tableSize)
-			    && !((end - ptr) % (2 * tableSize))) {
-				do {
-					const u8 *cur = ptr + (i / 2) * (2 * tableSize);
-
-					startLoc = read_pointer(&cur,
-					                        cur + tableSize,
-					                        hdr[3], 0,
-					                        (unsigned long)hdr);
-					if (pc < startLoc)
-						i /= 2;
-					else {
-						ptr = cur - tableSize;
-						i = (i + 1) / 2;
-					}
-				} while (startLoc && i > 1);
-				if (i == 1
-				    && (startLoc = read_pointer(&ptr,
-				                                ptr + tableSize,
-				                                hdr[3], 0,
-				                                (unsigned long)hdr)) != 0
-				    && pc >= startLoc)
-					fde = (void *)read_pointer(&ptr,
-					                           ptr + tableSize,
-					                           hdr[3], 0,
-					                           (unsigned long)hdr);
-			}
-		}
-		if(hdr && !fde)
-			dprintk(3, "Binary lookup for %lx failed.", pc);
-
-		if (fde != NULL) {
-			cie = cie_for_fde(fde, table);
-			ptr = (const u8 *)(fde + 2);
-			if(cie != NULL
-			   && cie != &bad_cie
-			   && cie != &not_fde
-			   && (ptrType = fde_pointer_type(cie)) >= 0
-			   && read_pointer(&ptr,
-			                   (const u8 *)(fde + 1) + *fde,
-			                   ptrType, 0, 0) == startLoc) {
-				if (!(ptrType & DW_EH_PE_indirect))
-					ptrType &= DW_EH_PE_FORM|DW_EH_PE_signed;
-				endLoc = startLoc
-				         + read_pointer(&ptr,
-				                        (const u8 *)(fde + 1) + *fde,
-				                        ptrType, 0, 0);
-				if(pc >= endLoc)
-					fde = NULL;
-			} else
-				fde = NULL;
-			if(!fde)
-				dprintk(1, "Binary lookup result for %lx discarded.", pc);
-		}
-		if (fde == NULL) {
-			for (fde = table->address, tableSize = table->size;
-			     cie = NULL, tableSize > sizeof(*fde)
-			     && tableSize - sizeof(*fde) >= *fde;
-			     tableSize -= sizeof(*fde) + *fde,
-			     fde += 1 + *fde / sizeof(*fde)) {
-				cie = cie_for_fde(fde, table);
-				if (cie == &bad_cie) {
-					cie = NULL;
-					break;
-				}
-				if (cie == NULL
-				    || cie == &not_fde
-				    || (ptrType = fde_pointer_type(cie)) < 0)
-					continue;
-				ptr = (const u8 *)(fde + 2);
-				startLoc = read_pointer(&ptr,
-				                        (const u8 *)(fde + 1) + *fde,
-				                        ptrType, 0, 0);
-				if (!startLoc)
-					continue;
-				if (!(ptrType & DW_EH_PE_indirect))
-					ptrType &= DW_EH_PE_FORM|DW_EH_PE_signed;
-				endLoc = startLoc
-				         + read_pointer(&ptr,
-				                        (const u8 *)(fde + 1) + *fde,
-				                        ptrType, 0, 0);
-				if (pc >= startLoc && pc < endLoc)
-					break;
-			}
-			if(!fde)
-				dprintk(3, "Linear lookup for %lx failed.", pc);
-		}
-	}
-	if (cie != NULL) {
-		memset(&state, 0, sizeof(state));
-		state.cieEnd = ptr; /* keep here temporarily */
-		ptr = (const u8 *)(cie + 2);
-		end = (const u8 *)(cie + 1) + *cie;
-		frame->call_frame = 1;
-		if ((state.version = *ptr) != 1)
-			cie = NULL; /* unsupported version */
-		else if (*++ptr) {
-			/* check if augmentation size is first (and thus present) */
-			if (*ptr == 'z') {
-				while (++ptr < end && *ptr) {
-					switch(*ptr) {
-					/* check for ignorable (or already handled)
-					 * nul-terminated augmentation string */
-					case 'L':
-					case 'P':
-					case 'R':
-						continue;
-					case 'S':
-						frame->call_frame = 0;
-						continue;
-					default:
-						break;
-					}
-					break;
-				}
-			}
-			if (ptr >= end || *ptr)
-				cie = NULL;
-		}
-		if(!cie)
-			dprintk(1, "CIE unusable (%p,%p).", ptr, end);
-		++ptr;
-	}
-	if (cie != NULL) {
-		/* get code aligment factor */
-		state.codeAlign = get_uleb128(&ptr, end);
-		/* get data aligment factor */
-		state.dataAlign = get_sleb128(&ptr, end);
-		if (state.codeAlign == 0 || state.dataAlign == 0 || ptr >= end)
-			cie = NULL;
-		else if (UNW_PC(frame) % state.codeAlign
-		         || UNW_SP(frame) % sleb128abs(state.dataAlign)) {
-			dprintk(1, "Input pointer(s) misaligned (%lx,%lx).",
-			        UNW_PC(frame), UNW_SP(frame));
-			return -EPERM;
-		} else {
-			retAddrReg = state.version <= 1 ? *ptr++ : get_uleb128(&ptr, end);
-			/* skip augmentation */
-			if (((const char *)(cie + 2))[1] == 'z') {
-				uleb128_t augSize = get_uleb128(&ptr, end);
-
-				ptr += augSize;
-			}
-			if (ptr > end
-			   || retAddrReg >= ARRAY_SIZE(reg_info)
-			   || REG_INVALID(retAddrReg)
-			   || reg_info[retAddrReg].width != sizeof(unsigned long))
-				cie = NULL;
-		}
-		if(!cie)
-			dprintk(1, "CIE validation failed (%p,%p).", ptr, end);
-	}
-	if (cie != NULL) {
-		state.cieStart = ptr;
-		ptr = state.cieEnd;
-		state.cieEnd = end;
-		end = (const u8 *)(fde + 1) + *fde;
-		/* skip augmentation */
-		if (((const char *)(cie + 2))[1] == 'z') {
-			uleb128_t augSize = get_uleb128(&ptr, end);
-
-			if ((ptr += augSize) > end)
-				fde = NULL;
-		}
-		if(!fde)
-			dprintk(1, "FDE validation failed (%p,%p).", ptr, end);
-	}
-	if (cie == NULL || fde == NULL) {
-#ifdef CONFIG_FRAME_POINTER
-		unsigned long top, bottom;
-
-		if ((UNW_SP(frame) | UNW_FP(frame)) % sizeof(unsigned long))
-			return -EPERM;
-		top = STACK_TOP(frame->task);
-		bottom = STACK_BOTTOM(frame->task);
-# if FRAME_RETADDR_OFFSET < 0
-		if (UNW_SP(frame) < top
-		    && UNW_FP(frame) <= UNW_SP(frame)
-		    && bottom < UNW_FP(frame)
-# else
-		if (UNW_SP(frame) > top
-		    && UNW_FP(frame) >= UNW_SP(frame)
-		    && bottom > UNW_FP(frame)
-# endif
-		   && !((UNW_SP(frame) | UNW_FP(frame))
-		        & (sizeof(unsigned long) - 1))) {
-			unsigned long link;
-
-			if (!probe_kernel_address(
-			                (unsigned long *)(UNW_FP(frame)
-			                                  + FRAME_LINK_OFFSET),
-						  link)
-# if FRAME_RETADDR_OFFSET < 0
-			   && link > bottom && link < UNW_FP(frame)
-# else
-			   && link > UNW_FP(frame) && link < bottom
-# endif
-			   && !(link & (sizeof(link) - 1))
-			   && !probe_kernel_address(
-			                  (unsigned long *)(UNW_FP(frame)
-			                                    + FRAME_RETADDR_OFFSET), UNW_PC(frame))) {
-				UNW_SP(frame) = UNW_FP(frame) + FRAME_RETADDR_OFFSET
-# if FRAME_RETADDR_OFFSET < 0
-					-
-# else
-					+
-# endif
-					  sizeof(UNW_PC(frame));
-				UNW_FP(frame) = link;
-				return 0;
-			}
-		}
-#endif
-		return -ENXIO;
-	}
-	state.org = startLoc;
-	memcpy(&state.cfa, &badCFA, sizeof(state.cfa));
-	/* process instructions */
-	if (!processCFI(ptr, end, pc, ptrType, &state)
-	   || state.loc > endLoc
-	   || state.regs[retAddrReg].where == Nowhere
-	   || state.cfa.reg >= ARRAY_SIZE(reg_info)
-	   || reg_info[state.cfa.reg].width != sizeof(unsigned long)
-	   || FRAME_REG(state.cfa.reg, unsigned long) % sizeof(unsigned long)
-	   || state.cfa.offs % sizeof(unsigned long)) {
-		dprintk(1, "Unusable unwind info (%p,%p).", ptr, end);
-		return -EIO;
-	}
-	/* update frame */
-#ifndef CONFIG_AS_CFI_SIGNAL_FRAME
-	if(frame->call_frame
-	   && !UNW_DEFAULT_RA(state.regs[retAddrReg], state.dataAlign))
-		frame->call_frame = 0;
-#endif
-	cfa = FRAME_REG(state.cfa.reg, unsigned long) + state.cfa.offs;
-	startLoc = min((unsigned long)UNW_SP(frame), cfa);
-	endLoc = max((unsigned long)UNW_SP(frame), cfa);
-	if (STACK_LIMIT(startLoc) != STACK_LIMIT(endLoc)) {
-		startLoc = min(STACK_LIMIT(cfa), cfa);
-		endLoc = max(STACK_LIMIT(cfa), cfa);
-	}
-#ifndef CONFIG_64BIT
-# define CASES CASE(8); CASE(16); CASE(32)
-#else
-# define CASES CASE(8); CASE(16); CASE(32); CASE(64)
-#endif
-	pc = UNW_PC(frame);
-	sp = UNW_SP(frame);
-	for (i = 0; i < ARRAY_SIZE(state.regs); ++i) {
-		if (REG_INVALID(i)) {
-			if (state.regs[i].where == Nowhere)
-				continue;
-			dprintk(1, "Cannot restore register %u (%d).",
-			        i, state.regs[i].where);
-			return -EIO;
-		}
-		switch(state.regs[i].where) {
-		default:
-			break;
-		case Register:
-			if (state.regs[i].value >= ARRAY_SIZE(reg_info)
-			   || REG_INVALID(state.regs[i].value)
-			   || reg_info[i].width > reg_info[state.regs[i].value].width) {
-				dprintk(1, "Cannot restore register %u from register %lu.",
-				        i, state.regs[i].value);
-				return -EIO;
-			}
-			switch(reg_info[state.regs[i].value].width) {
-#define CASE(n) \
-			case sizeof(u##n): \
-				state.regs[i].value = FRAME_REG(state.regs[i].value, \
-				                                const u##n); \
-				break
-			CASES;
-#undef CASE
-			default:
-				dprintk(1, "Unsupported register size %u (%lu).",
-				        reg_info[state.regs[i].value].width,
-				        state.regs[i].value);
-				return -EIO;
-			}
-			break;
-		}
-	}
-	for (i = 0; i < ARRAY_SIZE(state.regs); ++i) {
-		if (REG_INVALID(i))
-			continue;
-		switch(state.regs[i].where) {
-		case Nowhere:
-			if (reg_info[i].width != sizeof(UNW_SP(frame))
-			   || &FRAME_REG(i, __typeof__(UNW_SP(frame)))
-			      != &UNW_SP(frame))
-				continue;
-			UNW_SP(frame) = cfa;
-			break;
-		case Register:
-			switch(reg_info[i].width) {
-#define CASE(n) case sizeof(u##n): \
-				FRAME_REG(i, u##n) = state.regs[i].value; \
-				break
-			CASES;
-#undef CASE
-			default:
-				dprintk(1, "Unsupported register size %u (%u).",
-				        reg_info[i].width, i);
-				return -EIO;
-			}
-			break;
-		case Value:
-			if (reg_info[i].width != sizeof(unsigned long)) {
-				dprintk(1, "Unsupported value size %u (%u).",
-				        reg_info[i].width, i);
-				return -EIO;
-			}
-			FRAME_REG(i, unsigned long) = cfa + state.regs[i].value
-			                                    * state.dataAlign;
-			break;
-		case Memory: {
-				unsigned long addr = cfa + state.regs[i].value
-				                           * state.dataAlign;
-
-				if ((state.regs[i].value * state.dataAlign)
-				    % sizeof(unsigned long)
-				    || addr < startLoc
-				    || addr + sizeof(unsigned long) < addr
-				    || addr + sizeof(unsigned long) > endLoc) {
-					dprintk(1, "Bad memory location %lx (%lx).",
-					        addr, state.regs[i].value);
-					return -EIO;
-				}
-				switch(reg_info[i].width) {
-#define CASE(n)     case sizeof(u##n): \
-					probe_kernel_address((u##n *)addr, FRAME_REG(i, u##n)); \
-					break
-				CASES;
-#undef CASE
-				default:
-					dprintk(1, "Unsupported memory size %u (%u).",
-					        reg_info[i].width, i);
-					return -EIO;
-				}
-			}
-			break;
-		}
-	}
-
-	if (UNW_PC(frame) % state.codeAlign
-	    || UNW_SP(frame) % sleb128abs(state.dataAlign)) {
-		dprintk(1, "Output pointer(s) misaligned (%lx,%lx).",
-		        UNW_PC(frame), UNW_SP(frame));
-		return -EIO;
-	}
-	if (pc == UNW_PC(frame) && sp == UNW_SP(frame)) {
-		dprintk(1, "No progress (%lx,%lx).", pc, sp);
-		return -EIO;
-	}
-
-	return 0;
-#undef CASES
-#undef FRAME_REG
-}
-EXPORT_SYMBOL(unwind);
-
-int unwind_init_frame_info(struct unwind_frame_info *info,
-                           struct task_struct *tsk,
-                           /*const*/ struct pt_regs *regs)
-{
-	info->task = tsk;
-	info->call_frame = 0;
-	arch_unw_init_frame_info(info, regs);
-
-	return 0;
-}
-EXPORT_SYMBOL(unwind_init_frame_info);
-
-/*
- * Prepare to unwind a blocked task.
- */
-int unwind_init_blocked(struct unwind_frame_info *info,
-                        struct task_struct *tsk)
-{
-	info->task = tsk;
-	info->call_frame = 0;
-	arch_unw_init_blocked(info);
-
-	return 0;
-}
-EXPORT_SYMBOL(unwind_init_blocked);
-
-/*
- * Prepare to unwind the currently running thread.
- */
-int unwind_init_running(struct unwind_frame_info *info,
-                        asmlinkage int (*callback)(struct unwind_frame_info *,
-                                                   void *arg),
-                        void *arg)
-{
-	info->task = current;
-	info->call_frame = 0;
-
-	return arch_unwind_init_running(info, callback, arg);
-}
-EXPORT_SYMBOL(unwind_init_running);
-
-/*
- * Unwind until the return pointer is in user-land (or until an error
- * occurs).  Returns 0 if successful, negative number in case of
- * error.
- */
-int unwind_to_user(struct unwind_frame_info *info)
-{
-	while (!arch_unw_user_mode(info)) {
-		int err = unwind(info);
-
-		if (err < 0)
-			return err;
-	}
-
-	return 0;
-}
-EXPORT_SYMBOL(unwind_to_user);
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index db49886..742cbbe 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -96,13 +96,13 @@ static inline void set_wq_data(struct work_struct *work, void *wq)
 	BUG_ON(!work_pending(work));
 
 	new = (unsigned long) wq | (1UL << WORK_STRUCT_PENDING);
-	new |= work->management & WORK_STRUCT_FLAG_MASK;
-	work->management = new;
+	new |= WORK_STRUCT_FLAG_MASK & *work_data_bits(work);
+	atomic_long_set(&work->data, new);
 }
 
 static inline void *get_wq_data(struct work_struct *work)
 {
-	return (void *) (work->management & WORK_STRUCT_WQ_DATA_MASK);
+	return (void *) (atomic_long_read(&work->data) & WORK_STRUCT_WQ_DATA_MASK);
 }
 
 static int __run_work(struct cpu_workqueue_struct *cwq, struct work_struct *work)
@@ -133,7 +133,7 @@ static int __run_work(struct cpu_workqueue_struct *cwq, struct work_struct *work
 		list_del_init(&work->entry);
 		spin_unlock_irqrestore(&cwq->lock, flags);
 
-		if (!test_bit(WORK_STRUCT_NOAUTOREL, &work->management))
+		if (!test_bit(WORK_STRUCT_NOAUTOREL, work_data_bits(work)))
 			work_release(work);
 		f(work);
 
@@ -206,7 +206,7 @@ int fastcall queue_work(struct workqueue_struct *wq, struct work_struct *work)
 {
 	int ret = 0, cpu = get_cpu();
 
-	if (!test_and_set_bit(WORK_STRUCT_PENDING, &work->management)) {
+	if (!test_and_set_bit(WORK_STRUCT_PENDING, work_data_bits(work))) {
 		if (unlikely(is_single_threaded(wq)))
 			cpu = singlethread_cpu;
 		BUG_ON(!list_empty(&work->entry));
@@ -248,7 +248,7 @@ int fastcall queue_delayed_work(struct workqueue_struct *wq,
 	if (delay == 0)
 		return queue_work(wq, work);
 
-	if (!test_and_set_bit(WORK_STRUCT_PENDING, &work->management)) {
+	if (!test_and_set_bit(WORK_STRUCT_PENDING, work_data_bits(work))) {
 		BUG_ON(timer_pending(timer));
 		BUG_ON(!list_empty(&work->entry));
 
@@ -280,7 +280,7 @@ int queue_delayed_work_on(int cpu, struct workqueue_struct *wq,
 	struct timer_list *timer = &dwork->timer;
 	struct work_struct *work = &dwork->work;
 
-	if (!test_and_set_bit(WORK_STRUCT_PENDING, &work->management)) {
+	if (!test_and_set_bit(WORK_STRUCT_PENDING, work_data_bits(work))) {
 		BUG_ON(timer_pending(timer));
 		BUG_ON(!list_empty(&work->entry));
 
@@ -321,7 +321,7 @@ static void run_workqueue(struct cpu_workqueue_struct *cwq)
 		spin_unlock_irqrestore(&cwq->lock, flags);
 
 		BUG_ON(get_wq_data(work) != cwq);
-		if (!test_bit(WORK_STRUCT_NOAUTOREL, &work->management))
+		if (!test_bit(WORK_STRUCT_NOAUTOREL, work_data_bits(work)))
 			work_release(work);
 		f(work);