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Merge branch 'akpm' (patches from Andrew)

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Merge misc fixes from Andrew Morton:
 "16 patches.

  Subsystems affected by this patch series: xtensa, sh, ocfs2, scripts,
  lib, and mm (memory-failure, kasan, damon, shmem, tools, pagecache,
  debug, and pagemap)"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  mm: fix uninitialized use in overcommit_policy_handler
  mm/memory_failure: fix the missing pte_unmap() call
  kasan: always respect CONFIG_KASAN_STACK
  sh: pgtable-3level: fix cast to pointer from integer of different size
  mm/debug: sync up latest migrate_reason to migrate_reason_names
  mm/debug: sync up MR_CONTIG_RANGE and MR_LONGTERM_PIN
  mm: fs: invalidate bh_lrus for only cold path
  lib/zlib_inflate/inffast: check config in C to avoid unused function warning
  tools/vm/page-types: remove dependency on opt_file for idle page tracking
  scripts/sorttable: riscv: fix undeclared identifier 'EM_RISCV' error
  ocfs2: drop acl cache for directories too
  mm/shmem.c: fix judgment error in shmem_is_huge()
  xtensa: increase size of gcc stack frame check
  mm/damon: don't use strnlen() with known-bogus source length
  kasan: fix Kconfig check of CC_HAS_WORKING_NOSANITIZE_ADDRESS
  mm, hwpoison: add is_free_buddy_page() in HWPoisonHandlable()
This commit is contained in:
Linus Torvalds 2021-09-25 16:20:34 -07:00
commit a3b397b4ff
17 changed files with 69 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/sh/include/asm/pgtable-3level.h
View File

@ -34,7 +34,7 @@ typedef struct { unsigned long long pmd; } pmd_t;
static inline pmd_t *pud_pgtable(pud_t pud)
{
return (pmd_t *)pud_val(pud);
return (pmd_t *)(unsigned long)pud_val(pud);
}
/* only used by the stubbed out hugetlb gup code, should never be called */

8
fs/buffer.c
View File

@ -1425,12 +1425,16 @@ void invalidate_bh_lrus(void)
}
EXPORT_SYMBOL_GPL(invalidate_bh_lrus);
void invalidate_bh_lrus_cpu(int cpu)
/*
* It's called from workqueue context so we need a bh_lru_lock to close
* the race with preemption/irq.
*/
void invalidate_bh_lrus_cpu(void)
{
struct bh_lru *b;
bh_lru_lock();
b = per_cpu_ptr(&bh_lrus, cpu);
b = this_cpu_ptr(&bh_lrus);
__invalidate_bh_lrus(b);
bh_lru_unlock();
}

3
fs/ocfs2/dlmglue.c
View File

@ -3951,7 +3951,7 @@ static int ocfs2_data_convert_worker(struct ocfs2_lock_res *lockres,
oi = OCFS2_I(inode);
oi->ip_dir_lock_gen++;
mlog(0, "generation: %u\n", oi->ip_dir_lock_gen);
goto out;
goto out_forget;
}
if (!S_ISREG(inode->i_mode))
@ -3982,6 +3982,7 @@ static int ocfs2_data_convert_worker(struct ocfs2_lock_res *lockres,
filemap_fdatawait(mapping);
}
out_forget:
forget_all_cached_acls(inode);
out:

4
include/linux/buffer_head.h
View File

@ -194,7 +194,7 @@ void __breadahead_gfp(struct block_device *, sector_t block, unsigned int size,
struct buffer_head *__bread_gfp(struct block_device *,
sector_t block, unsigned size, gfp_t gfp);
void invalidate_bh_lrus(void);
void invalidate_bh_lrus_cpu(int cpu);
void invalidate_bh_lrus_cpu(void);
bool has_bh_in_lru(int cpu, void *dummy);
struct buffer_head *alloc_buffer_head(gfp_t gfp_flags);
void free_buffer_head(struct buffer_head * bh);
@ -408,7 +408,7 @@ static inline int inode_has_buffers(struct inode *inode) { return 0; }
static inline void invalidate_inode_buffers(struct inode *inode) {}
static inline int remove_inode_buffers(struct inode *inode) { return 1; }
static inline int sync_mapping_buffers(struct address_space *mapping) { return 0; }
static inline void invalidate_bh_lrus_cpu(int cpu) {}
static inline void invalidate_bh_lrus_cpu(void) {}
static inline bool has_bh_in_lru(int cpu, void *dummy) { return false; }
#define buffer_heads_over_limit 0

6
include/linux/migrate.h
View File

@ -19,6 +19,11 @@ struct migration_target_control;
*/
#define MIGRATEPAGE_SUCCESS 0
/*
* Keep sync with:
* - macro MIGRATE_REASON in include/trace/events/migrate.h
* - migrate_reason_names[MR_TYPES] in mm/debug.c
*/
enum migrate_reason {
MR_COMPACTION,
MR_MEMORY_FAILURE,
@ -32,7 +37,6 @@ enum migrate_reason {
MR_TYPES
};
/* In mm/debug.c; also keep sync with include/trace/events/migrate.h */
extern const char *migrate_reason_names[MR_TYPES];
#ifdef CONFIG_MIGRATION

2
lib/Kconfig.debug
View File

@ -346,7 +346,7 @@ config FRAME_WARN
int "Warn for stack frames larger than"
range 0 8192
default 2048 if GCC_PLUGIN_LATENT_ENTROPY
default 1536 if (!64BIT && PARISC)
default 1536 if (!64BIT && (PARISC || XTENSA))
default 1024 if (!64BIT && !PARISC)
default 2048 if 64BIT
help

2
lib/Kconfig.kasan
View File

@ -66,6 +66,7 @@ choice
config KASAN_GENERIC
bool "Generic mode"
depends on HAVE_ARCH_KASAN && CC_HAS_KASAN_GENERIC
depends on CC_HAS_WORKING_NOSANITIZE_ADDRESS
select SLUB_DEBUG if SLUB
select CONSTRUCTORS
help
@ -86,6 +87,7 @@ config KASAN_GENERIC
config KASAN_SW_TAGS
bool "Software tag-based mode"
depends on HAVE_ARCH_KASAN_SW_TAGS && CC_HAS_KASAN_SW_TAGS
depends on CC_HAS_WORKING_NOSANITIZE_ADDRESS
select SLUB_DEBUG if SLUB
select CONSTRUCTORS
help

13
lib/zlib_inflate/inffast.c
View File

@ -253,13 +253,12 @@ void inflate_fast(z_streamp strm, unsigned start)
sfrom = (unsigned short *)(from);
loops = len >> 1;
do
#ifdef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
*sout++ = *sfrom++;
#else
*sout++ = get_unaligned16(sfrom++);
#endif
while (--loops);
do {
if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS))
*sout++ = *sfrom++;
else
*sout++ = get_unaligned16(sfrom++);
} while (--loops);
out = (unsigned char *)sout;
from = (unsigned char *)sfrom;
} else { /* dist == 1 or dist == 2 */

16
mm/damon/dbgfs-test.h
View File

@ -20,27 +20,27 @@ static void damon_dbgfs_test_str_to_target_ids(struct kunit *test)
ssize_t nr_integers = 0, i;
question = "123";
answers = str_to_target_ids(question, strnlen(question, 128),
answers = str_to_target_ids(question, strlen(question),
&nr_integers);
KUNIT_EXPECT_EQ(test, (ssize_t)1, nr_integers);
KUNIT_EXPECT_EQ(test, 123ul, answers[0]);
kfree(answers);
question = "123abc";
answers = str_to_target_ids(question, strnlen(question, 128),
answers = str_to_target_ids(question, strlen(question),
&nr_integers);
KUNIT_EXPECT_EQ(test, (ssize_t)1, nr_integers);
KUNIT_EXPECT_EQ(test, 123ul, answers[0]);
kfree(answers);
question = "a123";
answers = str_to_target_ids(question, strnlen(question, 128),
answers = str_to_target_ids(question, strlen(question),
&nr_integers);
KUNIT_EXPECT_EQ(test, (ssize_t)0, nr_integers);
kfree(answers);
question = "12 35";
answers = str_to_target_ids(question, strnlen(question, 128),
answers = str_to_target_ids(question, strlen(question),
&nr_integers);
KUNIT_EXPECT_EQ(test, (ssize_t)2, nr_integers);
for (i = 0; i < nr_integers; i++)
@ -48,7 +48,7 @@ static void damon_dbgfs_test_str_to_target_ids(struct kunit *test)
kfree(answers);
question = "12 35 46";
answers = str_to_target_ids(question, strnlen(question, 128),
answers = str_to_target_ids(question, strlen(question),
&nr_integers);
KUNIT_EXPECT_EQ(test, (ssize_t)3, nr_integers);
for (i = 0; i < nr_integers; i++)
@ -56,7 +56,7 @@ static void damon_dbgfs_test_str_to_target_ids(struct kunit *test)
kfree(answers);
question = "12 35 abc 46";
answers = str_to_target_ids(question, strnlen(question, 128),
answers = str_to_target_ids(question, strlen(question),
&nr_integers);
KUNIT_EXPECT_EQ(test, (ssize_t)2, nr_integers);
for (i = 0; i < 2; i++)
@ -64,13 +64,13 @@ static void damon_dbgfs_test_str_to_target_ids(struct kunit *test)
kfree(answers);
question = "";
answers = str_to_target_ids(question, strnlen(question, 128),
answers = str_to_target_ids(question, strlen(question),
&nr_integers);
KUNIT_EXPECT_EQ(test, (ssize_t)0, nr_integers);
kfree(answers);
question = "\n";
answers = str_to_target_ids(question, strnlen(question, 128),
answers = str_to_target_ids(question, strlen(question),
&nr_integers);
KUNIT_EXPECT_EQ(test, (ssize_t)0, nr_integers);
kfree(answers);

4
mm/debug.c
View File

@ -24,7 +24,9 @@ const char *migrate_reason_names[MR_TYPES] = {
"syscall_or_cpuset",
"mempolicy_mbind",
"numa_misplaced",
"cma",
"contig_range",
"longterm_pin",
"demotion",
};
const struct trace_print_flags pageflag_names[] = {

12
mm/memory-failure.c
View File

@ -306,6 +306,7 @@ static unsigned long dev_pagemap_mapping_shift(struct page *page,
struct vm_area_struct *vma)
{
unsigned long address = vma_address(page, vma);
unsigned long ret = 0;
pgd_t *pgd;
p4d_t *p4d;
pud_t *pud;
@ -329,11 +330,10 @@ static unsigned long dev_pagemap_mapping_shift(struct page *page,
if (pmd_devmap(*pmd))
return PMD_SHIFT;
pte = pte_offset_map(pmd, address);
if (!pte_present(*pte))
return 0;
if (pte_devmap(*pte))
return PAGE_SHIFT;
return 0;
if (pte_present(*pte) && pte_devmap(*pte))
ret = PAGE_SHIFT;
pte_unmap(pte);
return ret;
}
/*
@ -1126,7 +1126,7 @@ static int page_action(struct page_state *ps, struct page *p,
*/
static inline bool HWPoisonHandlable(struct page *page)
{
return PageLRU(page) || __PageMovable(page);
return PageLRU(page) || __PageMovable(page) || is_free_buddy_page(page);
}
static int __get_hwpoison_page(struct page *page)

4
mm/shmem.c
View File

@ -490,9 +490,9 @@ bool shmem_is_huge(struct vm_area_struct *vma,
case SHMEM_HUGE_ALWAYS:
return true;
case SHMEM_HUGE_WITHIN_SIZE:
index = round_up(index, HPAGE_PMD_NR);
index = round_up(index + 1, HPAGE_PMD_NR);
i_size = round_up(i_size_read(inode), PAGE_SIZE);
if (i_size >= HPAGE_PMD_SIZE && (i_size >> PAGE_SHIFT) >= index)
if (i_size >> PAGE_SHIFT >= index)
return true;
fallthrough;
case SHMEM_HUGE_ADVISE:

19
mm/swap.c
View File

@ -620,7 +620,6 @@ void lru_add_drain_cpu(int cpu)
pagevec_lru_move_fn(pvec, lru_lazyfree_fn);
activate_page_drain(cpu);
invalidate_bh_lrus_cpu(cpu);
}
/**
@ -703,6 +702,20 @@ void lru_add_drain(void)
local_unlock(&lru_pvecs.lock);
}
/*
* It's called from per-cpu workqueue context in SMP case so
* lru_add_drain_cpu and invalidate_bh_lrus_cpu should run on
* the same cpu. It shouldn't be a problem in !SMP case since
* the core is only one and the locks will disable preemption.
*/
static void lru_add_and_bh_lrus_drain(void)
{
local_lock(&lru_pvecs.lock);
lru_add_drain_cpu(smp_processor_id());
local_unlock(&lru_pvecs.lock);
invalidate_bh_lrus_cpu();
}
void lru_add_drain_cpu_zone(struct zone *zone)
{
local_lock(&lru_pvecs.lock);
@ -717,7 +730,7 @@ static DEFINE_PER_CPU(struct work_struct, lru_add_drain_work);
static void lru_add_drain_per_cpu(struct work_struct *dummy)
{
lru_add_drain();
lru_add_and_bh_lrus_drain();
}
/*
@ -858,7 +871,7 @@ void lru_cache_disable(void)
*/
__lru_add_drain_all(true);
#else
lru_add_drain();
lru_add_and_bh_lrus_drain();
#endif
}

4
mm/util.c
View File

@ -787,7 +787,7 @@ int overcommit_policy_handler(struct ctl_table *table, int write, void *buffer,
size_t *lenp, loff_t *ppos)
{
struct ctl_table t;
int new_policy;
int new_policy = -1;
int ret;
/*
@ -805,7 +805,7 @@ int overcommit_policy_handler(struct ctl_table *table, int write, void *buffer,
t = *table;
t.data = &new_policy;
ret = proc_dointvec_minmax(&t, write, buffer, lenp, ppos);
if (ret)
if (ret || new_policy == -1)
return ret;
mm_compute_batch(new_policy);

3
scripts/Makefile.kasan
View File

@ -33,10 +33,11 @@ else
CFLAGS_KASAN := $(CFLAGS_KASAN_SHADOW) \
$(call cc-param,asan-globals=1) \
$(call cc-param,asan-instrumentation-with-call-threshold=$(call_threshold)) \
$(call cc-param,asan-stack=$(stack_enable)) \
$(call cc-param,asan-instrument-allocas=1)
endif
CFLAGS_KASAN += $(call cc-param,asan-stack=$(stack_enable))
endif # CONFIG_KASAN_GENERIC
ifdef CONFIG_KASAN_SW_TAGS

4
scripts/sorttable.c
View File

@ -54,6 +54,10 @@
#define EM_ARCV2 195
#endif
#ifndef EM_RISCV
#define EM_RISCV 243
#endif
static uint32_t (*r)(const uint32_t *);
static uint16_t (*r2)(const uint16_t *);
static uint64_t (*r8)(const uint64_t *);

2
tools/vm/page-types.c
View File

@ -1331,7 +1331,7 @@ int main(int argc, char *argv[])
if (opt_list && opt_list_mapcnt)
kpagecount_fd = checked_open(PROC_KPAGECOUNT, O_RDONLY);
if (opt_mark_idle && opt_file)
if (opt_mark_idle)
page_idle_fd = checked_open(SYS_KERNEL_MM_PAGE_IDLE, O_RDWR);
if (opt_list && opt_pid)