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-rw-r--r--drivers/base/node.c2
-rw-r--r--drivers/block/zram/Kconfig42
-rw-r--r--drivers/block/zram/zcomp.c2
-rw-r--r--drivers/block/zram/zram_drv.c29
-rw-r--r--drivers/block/zram/zram_drv.h1
-rw-r--r--drivers/dax/device.c4
-rw-r--r--drivers/dax/kmem.c2
-rw-r--r--drivers/dma-buf/sync_file.c3
-rw-r--r--drivers/edac/ghes_edac.c4
-rw-r--r--drivers/firmware/efi/efi.c1
-rw-r--r--drivers/gpu/drm/drm_atomic.c3
-rw-r--r--drivers/hwtracing/intel_th/msu.c2
-rw-r--r--drivers/ide/falconide.c2
-rw-r--r--drivers/ide/ide-probe.c3
-rw-r--r--drivers/misc/lkdtm/Makefile1
-rw-r--r--drivers/pinctrl/pinctrl-utils.c2
-rw-r--r--drivers/vhost/vringh.c3
-rw-r--r--drivers/virtio/virtio_balloon.c4
-rw-r--r--drivers/xen/unpopulated-alloc.c14
19 files changed, 89 insertions, 35 deletions
diff --git a/drivers/base/node.c b/drivers/base/node.c
index 6ffa470e2984..04f71c7bc3f8 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -450,7 +450,7 @@ static ssize_t node_read_meminfo(struct device *dev,
#ifdef CONFIG_SHADOW_CALL_STACK
nid, node_page_state(pgdat, NR_KERNEL_SCS_KB),
#endif
- nid, K(sum_zone_node_page_state(nid, NR_PAGETABLE)),
+ nid, K(node_page_state(pgdat, NR_PAGETABLE)),
nid, 0UL,
nid, K(sum_zone_node_page_state(nid, NR_BOUNCE)),
nid, K(node_page_state(pgdat, NR_WRITEBACK_TEMP)),
diff --git a/drivers/block/zram/Kconfig b/drivers/block/zram/Kconfig
index fe7a4b7d30cf..668c6bf2554d 100644
--- a/drivers/block/zram/Kconfig
+++ b/drivers/block/zram/Kconfig
@@ -2,7 +2,7 @@
config ZRAM
tristate "Compressed RAM block device support"
depends on BLOCK && SYSFS && ZSMALLOC && CRYPTO
- select CRYPTO_LZO
+ depends on CRYPTO_LZO || CRYPTO_ZSTD || CRYPTO_LZ4 || CRYPTO_LZ4HC || CRYPTO_842
help
Creates virtual block devices called /dev/zramX (X = 0, 1, ...).
Pages written to these disks are compressed and stored in memory
@@ -14,6 +14,46 @@ config ZRAM
See Documentation/admin-guide/blockdev/zram.rst for more information.
+choice
+ prompt "Default zram compressor"
+ default ZRAM_DEF_COMP_LZORLE
+ depends on ZRAM
+
+config ZRAM_DEF_COMP_LZORLE
+ bool "lzo-rle"
+ depends on CRYPTO_LZO
+
+config ZRAM_DEF_COMP_ZSTD
+ bool "zstd"
+ depends on CRYPTO_ZSTD
+
+config ZRAM_DEF_COMP_LZ4
+ bool "lz4"
+ depends on CRYPTO_LZ4
+
+config ZRAM_DEF_COMP_LZO
+ bool "lzo"
+ depends on CRYPTO_LZO
+
+config ZRAM_DEF_COMP_LZ4HC
+ bool "lz4hc"
+ depends on CRYPTO_LZ4HC
+
+config ZRAM_DEF_COMP_842
+ bool "842"
+ depends on CRYPTO_842
+
+endchoice
+
+config ZRAM_DEF_COMP
+ string
+ default "lzo-rle" if ZRAM_DEF_COMP_LZORLE
+ default "zstd" if ZRAM_DEF_COMP_ZSTD
+ default "lz4" if ZRAM_DEF_COMP_LZ4
+ default "lzo" if ZRAM_DEF_COMP_LZO
+ default "lz4hc" if ZRAM_DEF_COMP_LZ4HC
+ default "842" if ZRAM_DEF_COMP_842
+
config ZRAM_WRITEBACK
bool "Write back incompressible or idle page to backing device"
depends on ZRAM
diff --git a/drivers/block/zram/zcomp.c b/drivers/block/zram/zcomp.c
index 33e3b76c4fa9..052aa3f65514 100644
--- a/drivers/block/zram/zcomp.c
+++ b/drivers/block/zram/zcomp.c
@@ -15,8 +15,10 @@
#include "zcomp.h"
static const char * const backends[] = {
+#if IS_ENABLED(CONFIG_CRYPTO_LZO)
"lzo",
"lzo-rle",
+#endif
#if IS_ENABLED(CONFIG_CRYPTO_LZ4)
"lz4",
#endif
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 1b697208d661..66a33e418940 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -42,7 +42,7 @@ static DEFINE_IDR(zram_index_idr);
static DEFINE_MUTEX(zram_index_mutex);
static int zram_major;
-static const char *default_compressor = "lzo-rle";
+static const char *default_compressor = CONFIG_ZRAM_DEF_COMP;
/* Module params (documentation at end) */
static unsigned int num_devices = 1;
@@ -620,15 +620,19 @@ static int read_from_bdev_async(struct zram *zram, struct bio_vec *bvec,
return 1;
}
+#define PAGE_WB_SIG "page_index="
+
+#define PAGE_WRITEBACK 0
#define HUGE_WRITEBACK 1
#define IDLE_WRITEBACK 2
+
static ssize_t writeback_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t len)
{
struct zram *zram = dev_to_zram(dev);
unsigned long nr_pages = zram->disksize >> PAGE_SHIFT;
- unsigned long index;
+ unsigned long index = 0;
struct bio bio;
struct bio_vec bio_vec;
struct page *page;
@@ -640,8 +644,17 @@ static ssize_t writeback_store(struct device *dev,
mode = IDLE_WRITEBACK;
else if (sysfs_streq(buf, "huge"))
mode = HUGE_WRITEBACK;
- else
- return -EINVAL;
+ else {
+ if (strncmp(buf, PAGE_WB_SIG, sizeof(PAGE_WB_SIG) - 1))
+ return -EINVAL;
+
+ ret = kstrtol(buf + sizeof(PAGE_WB_SIG) - 1, 10, &index);
+ if (ret || index >= nr_pages)
+ return -EINVAL;
+
+ nr_pages = 1;
+ mode = PAGE_WRITEBACK;
+ }
down_read(&zram->init_lock);
if (!init_done(zram)) {
@@ -660,7 +673,7 @@ static ssize_t writeback_store(struct device *dev,
goto release_init_lock;
}
- for (index = 0; index < nr_pages; index++) {
+ while (nr_pages--) {
struct bio_vec bvec;
bvec.bv_page = page;
@@ -1071,7 +1084,7 @@ static ssize_t mm_stat_show(struct device *dev,
max_used = atomic_long_read(&zram->stats.max_used_pages);
ret = scnprintf(buf, PAGE_SIZE,
- "%8llu %8llu %8llu %8lu %8ld %8llu %8lu %8llu\n",
+ "%8llu %8llu %8llu %8lu %8ld %8llu %8lu %8llu %8llu\n",
orig_size << PAGE_SHIFT,
(u64)atomic64_read(&zram->stats.compr_data_size),
mem_used << PAGE_SHIFT,
@@ -1079,7 +1092,8 @@ static ssize_t mm_stat_show(struct device *dev,
max_used << PAGE_SHIFT,
(u64)atomic64_read(&zram->stats.same_pages),
pool_stats.pages_compacted,
- (u64)atomic64_read(&zram->stats.huge_pages));
+ (u64)atomic64_read(&zram->stats.huge_pages),
+ (u64)atomic64_read(&zram->stats.huge_pages_since));
up_read(&zram->init_lock);
return ret;
@@ -1411,6 +1425,7 @@ out:
if (comp_len == PAGE_SIZE) {
zram_set_flag(zram, index, ZRAM_HUGE);
atomic64_inc(&zram->stats.huge_pages);
+ atomic64_inc(&zram->stats.huge_pages_since);
}
if (flags) {
diff --git a/drivers/block/zram/zram_drv.h b/drivers/block/zram/zram_drv.h
index f2fd46daa760..9cabcbb13fd9 100644
--- a/drivers/block/zram/zram_drv.h
+++ b/drivers/block/zram/zram_drv.h
@@ -78,6 +78,7 @@ struct zram_stats {
atomic64_t notify_free; /* no. of swap slot free notifications */
atomic64_t same_pages; /* no. of same element filled pages */
atomic64_t huge_pages; /* no. of huge pages */
+ atomic64_t huge_pages_since; /* no. of huge pages since zram set up */
atomic64_t pages_stored; /* no. of pages currently stored */
atomic_long_t max_used_pages; /* no. of maximum pages stored */
atomic64_t writestall; /* no. of write slow paths */
diff --git a/drivers/dax/device.c b/drivers/dax/device.c
index 25e0b84a4296..5da2980bb16b 100644
--- a/drivers/dax/device.c
+++ b/drivers/dax/device.c
@@ -256,7 +256,7 @@ static vm_fault_t dev_dax_fault(struct vm_fault *vmf)
return dev_dax_huge_fault(vmf, PE_SIZE_PTE);
}
-static int dev_dax_split(struct vm_area_struct *vma, unsigned long addr)
+static int dev_dax_may_split(struct vm_area_struct *vma, unsigned long addr)
{
struct file *filp = vma->vm_file;
struct dev_dax *dev_dax = filp->private_data;
@@ -277,7 +277,7 @@ static unsigned long dev_dax_pagesize(struct vm_area_struct *vma)
static const struct vm_operations_struct dax_vm_ops = {
.fault = dev_dax_fault,
.huge_fault = dev_dax_huge_fault,
- .split = dev_dax_split,
+ .may_split = dev_dax_may_split,
.pagesize = dev_dax_pagesize,
};
diff --git a/drivers/dax/kmem.c b/drivers/dax/kmem.c
index b4368c5b6a0c..403ec42472d1 100644
--- a/drivers/dax/kmem.c
+++ b/drivers/dax/kmem.c
@@ -61,7 +61,7 @@ static int dev_dax_kmem_probe(struct dev_dax *dev_dax)
return -EINVAL;
}
- data = kzalloc(sizeof(*data) + sizeof(struct resource *) * dev_dax->nr_range, GFP_KERNEL);
+ data = kzalloc(struct_size(data, res, dev_dax->nr_range), GFP_KERNEL);
if (!data)
return -ENOMEM;
diff --git a/drivers/dma-buf/sync_file.c b/drivers/dma-buf/sync_file.c
index 5a5a1da01a00..20d9bddbb985 100644
--- a/drivers/dma-buf/sync_file.c
+++ b/drivers/dma-buf/sync_file.c
@@ -270,8 +270,7 @@ static struct sync_file *sync_file_merge(const char *name, struct sync_file *a,
fences[i++] = dma_fence_get(a_fences[0]);
if (num_fences > i) {
- nfences = krealloc(fences, i * sizeof(*fences),
- GFP_KERNEL);
+ nfences = krealloc_array(fences, i, sizeof(*fences), GFP_KERNEL);
if (!nfences)
goto err;
diff --git a/drivers/edac/ghes_edac.c b/drivers/edac/ghes_edac.c
index a918ca93e4f7..6d1ddecbf0da 100644
--- a/drivers/edac/ghes_edac.c
+++ b/drivers/edac/ghes_edac.c
@@ -207,8 +207,8 @@ static void enumerate_dimms(const struct dmi_header *dh, void *arg)
if (!hw->num_dimms || !(hw->num_dimms % 16)) {
struct dimm_info *new;
- new = krealloc(hw->dimms, (hw->num_dimms + 16) * sizeof(struct dimm_info),
- GFP_KERNEL);
+ new = krealloc_array(hw->dimms, hw->num_dimms + 16,
+ sizeof(struct dimm_info), GFP_KERNEL);
if (!new) {
WARN_ON_ONCE(1);
return;
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index 6c6eec044a97..df3f9bcab581 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -57,6 +57,7 @@ struct mm_struct efi_mm = {
.mm_rb = RB_ROOT,
.mm_users = ATOMIC_INIT(2),
.mm_count = ATOMIC_INIT(1),
+ .write_protect_seq = SEQCNT_ZERO(efi_mm.write_protect_seq),
MMAP_LOCK_INITIALIZER(efi_mm)
.page_table_lock = __SPIN_LOCK_UNLOCKED(efi_mm.page_table_lock),
.mmlist = LIST_HEAD_INIT(efi_mm.mmlist),
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index b2d20eb6c807..dda60051854b 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -964,7 +964,8 @@ drm_atomic_get_connector_state(struct drm_atomic_state *state,
struct __drm_connnectors_state *c;
int alloc = max(index + 1, config->num_connector);
- c = krealloc(state->connectors, alloc * sizeof(*state->connectors), GFP_KERNEL);
+ c = krealloc_array(state->connectors, alloc,
+ sizeof(*state->connectors), GFP_KERNEL);
if (!c)
return ERR_PTR(-ENOMEM);
diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c
index 3a77551fb4fc..7d95242db900 100644
--- a/drivers/hwtracing/intel_th/msu.c
+++ b/drivers/hwtracing/intel_th/msu.c
@@ -2002,7 +2002,7 @@ nr_pages_store(struct device *dev, struct device_attribute *attr,
}
nr_wins++;
- rewin = krealloc(win, sizeof(*win) * nr_wins, GFP_KERNEL);
+ rewin = krealloc_array(win, nr_wins, sizeof(*win), GFP_KERNEL);
if (!rewin) {
kfree(win);
return -ENOMEM;
diff --git a/drivers/ide/falconide.c b/drivers/ide/falconide.c
index dbeb2605e5f6..77af4c1a3f38 100644
--- a/drivers/ide/falconide.c
+++ b/drivers/ide/falconide.c
@@ -51,8 +51,6 @@ static void falconide_release_lock(void)
static void falconide_get_lock(irq_handler_t handler, void *data)
{
if (falconide_intr_lock == 0) {
- if (in_interrupt() > 0)
- panic("Falcon IDE hasn't ST-DMA lock in interrupt");
stdma_lock(handler, data);
falconide_intr_lock = 1;
}
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 1ddc45a04418..430b29e0abdb 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -1592,9 +1592,6 @@ EXPORT_SYMBOL_GPL(ide_port_unregister_devices);
static void ide_unregister(ide_hwif_t *hwif)
{
- BUG_ON(in_interrupt());
- BUG_ON(irqs_disabled());
-
mutex_lock(&ide_cfg_mtx);
if (hwif->present) {
diff --git a/drivers/misc/lkdtm/Makefile b/drivers/misc/lkdtm/Makefile
index c70b3822013f..1c4c7aca0026 100644
--- a/drivers/misc/lkdtm/Makefile
+++ b/drivers/misc/lkdtm/Makefile
@@ -11,6 +11,7 @@ lkdtm-$(CONFIG_LKDTM) += usercopy.o
lkdtm-$(CONFIG_LKDTM) += stackleak.o
lkdtm-$(CONFIG_LKDTM) += cfi.o
+KASAN_SANITIZE_rodata.o := n
KASAN_SANITIZE_stackleak.o := n
KCOV_INSTRUMENT_rodata.o := n
diff --git a/drivers/pinctrl/pinctrl-utils.c b/drivers/pinctrl/pinctrl-utils.c
index f2bcbf62c03d..93df0d4c0a24 100644
--- a/drivers/pinctrl/pinctrl-utils.c
+++ b/drivers/pinctrl/pinctrl-utils.c
@@ -39,7 +39,7 @@ int pinctrl_utils_reserve_map(struct pinctrl_dev *pctldev,
if (old_num >= new_num)
return 0;
- new_map = krealloc(*map, sizeof(*new_map) * new_num, GFP_KERNEL);
+ new_map = krealloc_array(*map, new_num, sizeof(*new_map), GFP_KERNEL);
if (!new_map) {
dev_err(pctldev->dev, "krealloc(map) failed\n");
return -ENOMEM;
diff --git a/drivers/vhost/vringh.c b/drivers/vhost/vringh.c
index b7403ba8e7f7..85d85faba058 100644
--- a/drivers/vhost/vringh.c
+++ b/drivers/vhost/vringh.c
@@ -198,7 +198,8 @@ static int resize_iovec(struct vringh_kiov *iov, gfp_t gfp)
flag = (iov->max_num & VRINGH_IOV_ALLOCATED);
if (flag)
- new = krealloc(iov->iov, new_num * sizeof(struct iovec), gfp);
+ new = krealloc_array(iov->iov, new_num,
+ sizeof(struct iovec), gfp);
else {
new = kmalloc_array(new_num, sizeof(struct iovec), gfp);
if (new) {
diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
index 481611c09dae..8985fc2cea86 100644
--- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c
@@ -1114,9 +1114,7 @@ static int virtballoon_validate(struct virtio_device *vdev)
* page reporting as it could potentially change the contents
* of our free pages.
*/
- if (!want_init_on_free() &&
- (IS_ENABLED(CONFIG_PAGE_POISONING_NO_SANITY) ||
- !page_poisoning_enabled()))
+ if (!want_init_on_free() && !page_poisoning_enabled_static())
__virtio_clear_bit(vdev, VIRTIO_BALLOON_F_PAGE_POISON);
else if (!virtio_has_feature(vdev, VIRTIO_BALLOON_F_PAGE_POISON))
__virtio_clear_bit(vdev, VIRTIO_BALLOON_F_REPORTING);
diff --git a/drivers/xen/unpopulated-alloc.c b/drivers/xen/unpopulated-alloc.c
index 7762c1bb23cb..e64e6befc63b 100644
--- a/drivers/xen/unpopulated-alloc.c
+++ b/drivers/xen/unpopulated-alloc.c
@@ -27,11 +27,6 @@ static int fill_list(unsigned int nr_pages)
if (!res)
return -ENOMEM;
- pgmap = kzalloc(sizeof(*pgmap), GFP_KERNEL);
- if (!pgmap)
- goto err_pgmap;
-
- pgmap->type = MEMORY_DEVICE_GENERIC;
res->name = "Xen scratch";
res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
@@ -43,6 +38,11 @@ static int fill_list(unsigned int nr_pages)
goto err_resource;
}
+ pgmap = kzalloc(sizeof(*pgmap), GFP_KERNEL);
+ if (!pgmap)
+ goto err_pgmap;
+
+ pgmap->type = MEMORY_DEVICE_GENERIC;
pgmap->range = (struct range) {
.start = res->start,
.end = res->end,
@@ -92,10 +92,10 @@ static int fill_list(unsigned int nr_pages)
return 0;
err_memremap:
- release_resource(res);
-err_resource:
kfree(pgmap);
err_pgmap:
+ release_resource(res);
+err_resource:
kfree(res);
return ret;
}
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