Merge branch 'akpm' (patches from Andrew)
Merge misc fixes from Andrew Morton:
"12 patches.
Subsystems affected by this patch series: mm (documentation, kasan,
and pagemap), csky, ia64, gcov, and lib"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
lib: remove "expecting prototype" kernel-doc warnings
gcov: clang: fix clang-11+ build
mm: ptdump: fix build failure
mm/mapping_dirty_helpers: guard hugepage pud's usage
ia64: tools: remove duplicate definition of ia64_mf() on ia64
ia64: tools: remove inclusion of ia64-specific version of errno.h header
ia64: fix discontig.c section mismatches
ia64: remove duplicate entries in generic_defconfig
csky: change a Kconfig symbol name to fix e1000 build error
kasan: remove redundant config option
kasan: fix hwasan build for gcc
mm: eliminate "expecting prototype" kernel-doc warnings
diff --git a/arch/arm64/kernel/sleep.S b/arch/arm64/kernel/sleep.S
index 5bfd9b8..4ea9392 100644
--- a/arch/arm64/kernel/sleep.S
+++ b/arch/arm64/kernel/sleep.S
@@ -134,7 +134,7 @@
*/
bl cpu_do_resume
-#if defined(CONFIG_KASAN) && CONFIG_KASAN_STACK
+#if defined(CONFIG_KASAN) && defined(CONFIG_KASAN_STACK)
mov x0, sp
bl kasan_unpoison_task_stack_below
#endif
diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig
index 34e9122..8de5b98 100644
--- a/arch/csky/Kconfig
+++ b/arch/csky/Kconfig
@@ -314,7 +314,7 @@
int "Maximum zone order"
default "11"
-config RAM_BASE
+config DRAM_BASE
hex "DRAM start addr (the same with memory-section in dts)"
default 0x0
diff --git a/arch/csky/include/asm/page.h b/arch/csky/include/asm/page.h
index 3b91fc3..ed74514 100644
--- a/arch/csky/include/asm/page.h
+++ b/arch/csky/include/asm/page.h
@@ -28,7 +28,7 @@
#define SSEG_SIZE 0x20000000
#define LOWMEM_LIMIT (SSEG_SIZE * 2)
-#define PHYS_OFFSET_OFFSET (CONFIG_RAM_BASE & (SSEG_SIZE - 1))
+#define PHYS_OFFSET_OFFSET (CONFIG_DRAM_BASE & (SSEG_SIZE - 1))
#ifndef __ASSEMBLY__
diff --git a/arch/ia64/configs/generic_defconfig b/arch/ia64/configs/generic_defconfig
index ca0d596..8916a28 100644
--- a/arch/ia64/configs/generic_defconfig
+++ b/arch/ia64/configs/generic_defconfig
@@ -55,8 +55,6 @@
CONFIG_SCSI_FC_ATTRS=y
CONFIG_SCSI_SYM53C8XX_2=y
CONFIG_SCSI_QLOGIC_1280=y
-CONFIG_ATA=y
-CONFIG_ATA_PIIX=y
CONFIG_SATA_VITESSE=y
CONFIG_MD=y
CONFIG_BLK_DEV_MD=m
diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c
index 03b3a02..c310b4c 100644
--- a/arch/ia64/mm/discontig.c
+++ b/arch/ia64/mm/discontig.c
@@ -95,7 +95,7 @@
* acpi_boot_init() (which builds the node_to_cpu_mask array) hasn't been
* called yet. Note that node 0 will also count all non-existent cpus.
*/
-static int __meminit early_nr_cpus_node(int node)
+static int early_nr_cpus_node(int node)
{
int cpu, n = 0;
@@ -110,7 +110,7 @@
* compute_pernodesize - compute size of pernode data
* @node: the node id.
*/
-static unsigned long __meminit compute_pernodesize(int node)
+static unsigned long compute_pernodesize(int node)
{
unsigned long pernodesize = 0, cpus;
@@ -367,7 +367,7 @@
}
}
-static void __meminit scatter_node_data(void)
+static void scatter_node_data(void)
{
pg_data_t **dst;
int node;
diff --git a/arch/x86/kernel/acpi/wakeup_64.S b/arch/x86/kernel/acpi/wakeup_64.S
index 56b6865..d5d8a35 100644
--- a/arch/x86/kernel/acpi/wakeup_64.S
+++ b/arch/x86/kernel/acpi/wakeup_64.S
@@ -115,7 +115,7 @@
movq pt_regs_r14(%rax), %r14
movq pt_regs_r15(%rax), %r15
-#if defined(CONFIG_KASAN) && CONFIG_KASAN_STACK
+#if defined(CONFIG_KASAN) && defined(CONFIG_KASAN_STACK)
/*
* The suspend path may have poisoned some areas deeper in the stack,
* which we now need to unpoison.
diff --git a/include/linux/kasan.h b/include/linux/kasan.h
index b91732b..14f72ec 100644
--- a/include/linux/kasan.h
+++ b/include/linux/kasan.h
@@ -330,7 +330,7 @@
#endif /* CONFIG_KASAN */
-#if defined(CONFIG_KASAN) && CONFIG_KASAN_STACK
+#if defined(CONFIG_KASAN) && defined(CONFIG_KASAN_STACK)
void kasan_unpoison_task_stack(struct task_struct *task);
#else
static inline void kasan_unpoison_task_stack(struct task_struct *task) {}
diff --git a/kernel/gcov/clang.c b/kernel/gcov/clang.c
index c466c7f..b81f282 100644
--- a/kernel/gcov/clang.c
+++ b/kernel/gcov/clang.c
@@ -369,7 +369,7 @@
INIT_LIST_HEAD(&fn_dup->head);
cv_size = fn->num_counters * sizeof(fn->counters[0]);
- fn_dup->counters = vmalloc(cv_size);
+ fn_dup->counters = kvmalloc(cv_size, GFP_KERNEL);
if (!fn_dup->counters) {
kfree(fn_dup);
return NULL;
diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan
index fba9909..cffc2eb 100644
--- a/lib/Kconfig.kasan
+++ b/lib/Kconfig.kasan
@@ -138,9 +138,10 @@
endchoice
-config KASAN_STACK_ENABLE
+config KASAN_STACK
bool "Enable stack instrumentation (unsafe)" if CC_IS_CLANG && !COMPILE_TEST
depends on KASAN_GENERIC || KASAN_SW_TAGS
+ default y if CC_IS_GCC
help
The LLVM stack address sanitizer has a know problem that
causes excessive stack usage in a lot of functions, see
@@ -154,12 +155,6 @@
CONFIG_COMPILE_TEST. On gcc it is assumed to always be safe
to use and enabled by default.
-config KASAN_STACK
- int
- depends on KASAN_GENERIC || KASAN_SW_TAGS
- default 1 if KASAN_STACK_ENABLE || CC_IS_GCC
- default 0
-
config KASAN_SW_TAGS_IDENTIFY
bool "Enable memory corruption identification"
depends on KASAN_SW_TAGS
diff --git a/lib/earlycpio.c b/lib/earlycpio.c
index e836288..7921193 100644
--- a/lib/earlycpio.c
+++ b/lib/earlycpio.c
@@ -40,7 +40,7 @@
};
/**
- * cpio_data find_cpio_data - Search for files in an uncompressed cpio
+ * find_cpio_data - Search for files in an uncompressed cpio
* @path: The directory to search for, including a slash at the end
* @data: Pointer to the cpio archive or a header inside
* @len: Remaining length of the cpio based on data pointer
@@ -49,7 +49,7 @@
* matching file itself. It can be used to iterate through the cpio
* to find all files inside of a directory path.
*
- * @return: struct cpio_data containing the address, length and
+ * Return: &struct cpio_data containing the address, length and
* filename (with the directory path cut off) of the found file.
* If you search for a filename and not for files in a directory,
* pass the absolute path of the filename in the cpio and make sure
diff --git a/lib/lru_cache.c b/lib/lru_cache.c
index c69ee53..52313ac 100644
--- a/lib/lru_cache.c
+++ b/lib/lru_cache.c
@@ -76,6 +76,7 @@
/**
* lc_create - prepares to track objects in an active set
* @name: descriptive name only used in lc_seq_printf_stats and lc_seq_dump_details
+ * @cache: cache root pointer
* @max_pending_changes: maximum changes to accumulate until a transaction is required
* @e_count: number of elements allowed to be active simultaneously
* @e_size: size of the tracked objects
@@ -627,7 +628,7 @@
}
/**
- * lc_dump - Dump a complete LRU cache to seq in textual form.
+ * lc_seq_dump_details - Dump a complete LRU cache to seq in textual form.
* @lc: the lru cache to operate on
* @seq: the &struct seq_file pointer to seq_printf into
* @utext: user supplied additional "heading" or other info
diff --git a/lib/parman.c b/lib/parman.c
index a11f2f6..3f8f8d4 100644
--- a/lib/parman.c
+++ b/lib/parman.c
@@ -297,7 +297,7 @@
* parman_prio_init - initializes a parman priority chunk
* @parman: parman instance
* @prio: parman prio structure to be initialized
- * @prority: desired priority of the chunk
+ * @priority: desired priority of the chunk
*
* Note: all locking must be provided by the caller.
*
@@ -356,7 +356,7 @@
EXPORT_SYMBOL(parman_item_add);
/**
- * parman_item_del - deletes parman item
+ * parman_item_remove - deletes parman item
* @parman: parman instance
* @prio: parman prio instance to delete the item from
* @item: parman item instance
diff --git a/lib/radix-tree.c b/lib/radix-tree.c
index 3a4da11..b3afafe 100644
--- a/lib/radix-tree.c
+++ b/lib/radix-tree.c
@@ -166,9 +166,9 @@
/**
* radix_tree_find_next_bit - find the next set bit in a memory region
*
- * @addr: The address to base the search on
- * @size: The bitmap size in bits
- * @offset: The bitnumber to start searching at
+ * @node: where to begin the search
+ * @tag: the tag index
+ * @offset: the bitnumber to start searching at
*
* Unrollable variant of find_next_bit() for constant size arrays.
* Tail bits starting from size to roundup(size, BITS_PER_LONG) must be zero.
@@ -461,7 +461,7 @@
/**
* radix_tree_shrink - shrink radix tree to minimum height
- * @root radix tree root
+ * @root: radix tree root
*/
static inline bool radix_tree_shrink(struct radix_tree_root *root)
{
@@ -691,7 +691,7 @@
}
/**
- * __radix_tree_insert - insert into a radix tree
+ * radix_tree_insert - insert into a radix tree
* @root: radix tree root
* @index: index key
* @item: item to insert
@@ -919,6 +919,7 @@
/**
* radix_tree_iter_replace - replace item in a slot
* @root: radix tree root
+ * @iter: iterator state
* @slot: pointer to slot
* @item: new item to store in the slot.
*
diff --git a/mm/kasan/common.c b/mm/kasan/common.c
index b5e08d4..7b53291 100644
--- a/mm/kasan/common.c
+++ b/mm/kasan/common.c
@@ -63,7 +63,7 @@
kasan_unpoison(address, size);
}
-#if CONFIG_KASAN_STACK
+#ifdef CONFIG_KASAN_STACK
/* Unpoison the entire stack for a task. */
void kasan_unpoison_task_stack(struct task_struct *task)
{
diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h
index 8c55634..3436c6b 100644
--- a/mm/kasan/kasan.h
+++ b/mm/kasan/kasan.h
@@ -231,7 +231,7 @@
const char *kasan_get_bug_type(struct kasan_access_info *info);
void kasan_metadata_fetch_row(char *buffer, void *row);
-#if defined(CONFIG_KASAN_GENERIC) && CONFIG_KASAN_STACK
+#if defined(CONFIG_KASAN_GENERIC) && defined(CONFIG_KASAN_STACK)
void kasan_print_address_stack_frame(const void *addr);
#else
static inline void kasan_print_address_stack_frame(const void *addr) { }
diff --git a/mm/kasan/report_generic.c b/mm/kasan/report_generic.c
index 41f3745..de732bc 100644
--- a/mm/kasan/report_generic.c
+++ b/mm/kasan/report_generic.c
@@ -128,7 +128,7 @@
memcpy(buffer, kasan_mem_to_shadow(row), META_BYTES_PER_ROW);
}
-#if CONFIG_KASAN_STACK
+#ifdef CONFIG_KASAN_STACK
static bool __must_check tokenize_frame_descr(const char **frame_descr,
char *token, size_t max_tok_len,
unsigned long *value)
diff --git a/mm/mapping_dirty_helpers.c b/mm/mapping_dirty_helpers.c
index b59054e..b890854 100644
--- a/mm/mapping_dirty_helpers.c
+++ b/mm/mapping_dirty_helpers.c
@@ -165,10 +165,12 @@
return 0;
}
+#ifdef CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD
/* Huge pud */
walk->action = ACTION_CONTINUE;
if (pud_trans_huge(pudval) || pud_devmap(pudval))
WARN_ON(pud_write(pudval) || pud_dirty(pudval));
+#endif
return 0;
}
diff --git a/mm/mmu_gather.c b/mm/mmu_gather.c
index 0dc7149..1b98374 100644
--- a/mm/mmu_gather.c
+++ b/mm/mmu_gather.c
@@ -249,16 +249,6 @@
tlb_flush_mmu_free(tlb);
}
-/**
- * tlb_gather_mmu - initialize an mmu_gather structure for page-table tear-down
- * @tlb: the mmu_gather structure to initialize
- * @mm: the mm_struct of the target address space
- * @fullmm: @mm is without users and we're going to destroy the full address
- * space (exit/execve)
- *
- * Called to initialize an (on-stack) mmu_gather structure for page-table
- * tear-down from @mm.
- */
static void __tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm,
bool fullmm)
{
@@ -283,11 +273,30 @@
inc_tlb_flush_pending(tlb->mm);
}
+/**
+ * tlb_gather_mmu - initialize an mmu_gather structure for page-table tear-down
+ * @tlb: the mmu_gather structure to initialize
+ * @mm: the mm_struct of the target address space
+ *
+ * Called to initialize an (on-stack) mmu_gather structure for page-table
+ * tear-down from @mm.
+ */
void tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm)
{
__tlb_gather_mmu(tlb, mm, false);
}
+/**
+ * tlb_gather_mmu_fullmm - initialize an mmu_gather structure for page-table tear-down
+ * @tlb: the mmu_gather structure to initialize
+ * @mm: the mm_struct of the target address space
+ *
+ * In this case, @mm is without users and we're going to destroy the
+ * full address space (exit/execve).
+ *
+ * Called to initialize an (on-stack) mmu_gather structure for page-table
+ * tear-down from @mm.
+ */
void tlb_gather_mmu_fullmm(struct mmu_gather *tlb, struct mm_struct *mm)
{
__tlb_gather_mmu(tlb, mm, true);
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 9efaf43..fa1cf18 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -170,7 +170,7 @@
return false;
}
-/**
+/*
* Check whether unreclaimable slab amount is greater than
* all user memory(LRU pages).
* dump_unreclaimable_slab() could help in the case that
diff --git a/mm/ptdump.c b/mm/ptdump.c
index 4354c14..da75144 100644
--- a/mm/ptdump.c
+++ b/mm/ptdump.c
@@ -111,7 +111,7 @@
unsigned long next, struct mm_walk *walk)
{
struct ptdump_state *st = walk->private;
- pte_t val = READ_ONCE(*pte);
+ pte_t val = ptep_get(pte);
if (st->effective_prot)
st->effective_prot(st, 4, pte_val(val));
diff --git a/mm/shuffle.c b/mm/shuffle.c
index 9c2e145..c13c33b 100644
--- a/mm/shuffle.c
+++ b/mm/shuffle.c
@@ -147,8 +147,8 @@
spin_unlock_irqrestore(&z->lock, flags);
}
-/**
- * shuffle_free_memory - reduce the predictability of the page allocator
+/*
+ * __shuffle_free_memory - reduce the predictability of the page allocator
* @pgdat: node page data
*/
void __meminit __shuffle_free_memory(pg_data_t *pgdat)
diff --git a/scripts/Makefile.kasan b/scripts/Makefile.kasan
index 1e000cc..3d79190 100644
--- a/scripts/Makefile.kasan
+++ b/scripts/Makefile.kasan
@@ -2,6 +2,14 @@
CFLAGS_KASAN_NOSANITIZE := -fno-builtin
KASAN_SHADOW_OFFSET ?= $(CONFIG_KASAN_SHADOW_OFFSET)
+cc-param = $(call cc-option, -mllvm -$(1), $(call cc-option, --param $(1)))
+
+ifdef CONFIG_KASAN_STACK
+ stack_enable := 1
+else
+ stack_enable := 0
+endif
+
ifdef CONFIG_KASAN_GENERIC
ifdef CONFIG_KASAN_INLINE
@@ -12,8 +20,6 @@
CFLAGS_KASAN_MINIMAL := -fsanitize=kernel-address
-cc-param = $(call cc-option, -mllvm -$(1), $(call cc-option, --param $(1)))
-
# -fasan-shadow-offset fails without -fsanitize
CFLAGS_KASAN_SHADOW := $(call cc-option, -fsanitize=kernel-address \
-fasan-shadow-offset=$(KASAN_SHADOW_OFFSET), \
@@ -27,7 +33,7 @@
CFLAGS_KASAN := $(CFLAGS_KASAN_SHADOW) \
$(call cc-param,asan-globals=1) \
$(call cc-param,asan-instrumentation-with-call-threshold=$(call_threshold)) \
- $(call cc-param,asan-stack=$(CONFIG_KASAN_STACK)) \
+ $(call cc-param,asan-stack=$(stack_enable)) \
$(call cc-param,asan-instrument-allocas=1)
endif
@@ -36,14 +42,14 @@
ifdef CONFIG_KASAN_SW_TAGS
ifdef CONFIG_KASAN_INLINE
- instrumentation_flags := -mllvm -hwasan-mapping-offset=$(KASAN_SHADOW_OFFSET)
+ instrumentation_flags := $(call cc-param,hwasan-mapping-offset=$(KASAN_SHADOW_OFFSET))
else
- instrumentation_flags := -mllvm -hwasan-instrument-with-calls=1
+ instrumentation_flags := $(call cc-param,hwasan-instrument-with-calls=1)
endif
CFLAGS_KASAN := -fsanitize=kernel-hwaddress \
- -mllvm -hwasan-instrument-stack=$(CONFIG_KASAN_STACK) \
- -mllvm -hwasan-use-short-granules=0 \
+ $(call cc-param,hwasan-instrument-stack=$(stack_enable)) \
+ $(call cc-param,hwasan-use-short-granules=0) \
$(instrumentation_flags)
endif # CONFIG_KASAN_SW_TAGS
diff --git a/security/Kconfig.hardening b/security/Kconfig.hardening
index 269967c..a56c364 100644
--- a/security/Kconfig.hardening
+++ b/security/Kconfig.hardening
@@ -64,7 +64,7 @@
config GCC_PLUGIN_STRUCTLEAK_BYREF
bool "zero-init structs passed by reference (strong)"
depends on GCC_PLUGINS
- depends on !(KASAN && KASAN_STACK=1)
+ depends on !(KASAN && KASAN_STACK)
select GCC_PLUGIN_STRUCTLEAK
help
Zero-initialize any structures on the stack that may
@@ -82,7 +82,7 @@
config GCC_PLUGIN_STRUCTLEAK_BYREF_ALL
bool "zero-init anything passed by reference (very strong)"
depends on GCC_PLUGINS
- depends on !(KASAN && KASAN_STACK=1)
+ depends on !(KASAN && KASAN_STACK)
select GCC_PLUGIN_STRUCTLEAK
help
Zero-initialize any stack variables that may be passed
diff --git a/tools/arch/ia64/include/asm/barrier.h b/tools/arch/ia64/include/asm/barrier.h
index 4d471d9..6fffe56 100644
--- a/tools/arch/ia64/include/asm/barrier.h
+++ b/tools/arch/ia64/include/asm/barrier.h
@@ -39,9 +39,6 @@
* sequential memory pages only.
*/
-/* XXX From arch/ia64/include/uapi/asm/gcc_intrin.h */
-#define ia64_mf() asm volatile ("mf" ::: "memory")
-
#define mb() ia64_mf()
#define rmb() mb()
#define wmb() mb()
diff --git a/tools/include/uapi/asm/errno.h b/tools/include/uapi/asm/errno.h
index 637189e..d30439b 100644
--- a/tools/include/uapi/asm/errno.h
+++ b/tools/include/uapi/asm/errno.h
@@ -9,8 +9,6 @@
#include "../../../arch/alpha/include/uapi/asm/errno.h"
#elif defined(__mips__)
#include "../../../arch/mips/include/uapi/asm/errno.h"
-#elif defined(__ia64__)
-#include "../../../arch/ia64/include/uapi/asm/errno.h"
#elif defined(__xtensa__)
#include "../../../arch/xtensa/include/uapi/asm/errno.h"
#else
