Re: Linux 4.14.55
From: Greg KH
Date: Wed Jul 11 2018 - 11:46:50 EST
diff --git a/Makefile b/Makefile
index de0955d8dfa3..0700feaaa6cf 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
VERSION = 4
PATCHLEVEL = 14
-SUBLEVEL = 54
+SUBLEVEL = 55
EXTRAVERSION =
NAME = Petit Gorille
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index be20b1f73384..e928c2af6a10 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -1244,7 +1244,7 @@ cleanup_critical:
jl 0f
clg %r9,BASED(.Lcleanup_table+104) # .Lload_fpu_regs_end
jl .Lcleanup_load_fpu_regs
-0: BR_EX %r14
+0: BR_EX %r14,%r11
.align 8
.Lcleanup_table:
@@ -1280,7 +1280,7 @@ cleanup_critical:
ni __SIE_PROG0C+3(%r9),0xfe # no longer in SIE
lctlg %c1,%c1,__LC_USER_ASCE # load primary asce
larl %r9,sie_exit # skip forward to sie_exit
- BR_EX %r14
+ BR_EX %r14,%r11
#endif
.Lcleanup_system_call:
diff --git a/block/blk-lib.c b/block/blk-lib.c
index 63fb971d6574..2bc544ce3d2e 100644
--- a/block/blk-lib.c
+++ b/block/blk-lib.c
@@ -275,6 +275,40 @@ static unsigned int __blkdev_sectors_to_bio_pages(sector_t nr_sects)
return min(pages, (sector_t)BIO_MAX_PAGES);
}
+static int __blkdev_issue_zero_pages(struct block_device *bdev,
+ sector_t sector, sector_t nr_sects, gfp_t gfp_mask,
+ struct bio **biop)
+{
+ struct request_queue *q = bdev_get_queue(bdev);
+ struct bio *bio = *biop;
+ int bi_size = 0;
+ unsigned int sz;
+
+ if (!q)
+ return -ENXIO;
+
+ while (nr_sects != 0) {
+ bio = next_bio(bio, __blkdev_sectors_to_bio_pages(nr_sects),
+ gfp_mask);
+ bio->bi_iter.bi_sector = sector;
+ bio_set_dev(bio, bdev);
+ bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
+
+ while (nr_sects != 0) {
+ sz = min((sector_t) PAGE_SIZE, nr_sects << 9);
+ bi_size = bio_add_page(bio, ZERO_PAGE(0), sz, 0);
+ nr_sects -= bi_size >> 9;
+ sector += bi_size >> 9;
+ if (bi_size < sz)
+ break;
+ }
+ cond_resched();
+ }
+
+ *biop = bio;
+ return 0;
+}
+
/**
* __blkdev_issue_zeroout - generate number of zero filed write bios
* @bdev: blockdev to issue
@@ -288,12 +322,6 @@ static unsigned int __blkdev_sectors_to_bio_pages(sector_t nr_sects)
* Zero-fill a block range, either using hardware offload or by explicitly
* writing zeroes to the device.
*
- * Note that this function may fail with -EOPNOTSUPP if the driver signals
- * zeroing offload support, but the device fails to process the command (for
- * some devices there is no non-destructive way to verify whether this
- * operation is actually supported). In this case the caller should call
- * retry the call to blkdev_issue_zeroout() and the fallback path will be used.
- *
* If a device is using logical block provisioning, the underlying space will
* not be released if %flags contains BLKDEV_ZERO_NOUNMAP.
*
@@ -305,9 +333,6 @@ int __blkdev_issue_zeroout(struct block_device *bdev, sector_t sector,
unsigned flags)
{
int ret;
- int bi_size = 0;
- struct bio *bio = *biop;
- unsigned int sz;
sector_t bs_mask;
bs_mask = (bdev_logical_block_size(bdev) >> 9) - 1;
@@ -317,30 +342,10 @@ int __blkdev_issue_zeroout(struct block_device *bdev, sector_t sector,
ret = __blkdev_issue_write_zeroes(bdev, sector, nr_sects, gfp_mask,
biop, flags);
if (ret != -EOPNOTSUPP || (flags & BLKDEV_ZERO_NOFALLBACK))
- goto out;
-
- ret = 0;
- while (nr_sects != 0) {
- bio = next_bio(bio, __blkdev_sectors_to_bio_pages(nr_sects),
- gfp_mask);
- bio->bi_iter.bi_sector = sector;
- bio_set_dev(bio, bdev);
- bio_set_op_attrs(bio, REQ_OP_WRITE, 0);
-
- while (nr_sects != 0) {
- sz = min((sector_t) PAGE_SIZE, nr_sects << 9);
- bi_size = bio_add_page(bio, ZERO_PAGE(0), sz, 0);
- nr_sects -= bi_size >> 9;
- sector += bi_size >> 9;
- if (bi_size < sz)
- break;
- }
- cond_resched();
- }
+ return ret;
- *biop = bio;
-out:
- return ret;
+ return __blkdev_issue_zero_pages(bdev, sector, nr_sects, gfp_mask,
+ biop);
}
EXPORT_SYMBOL(__blkdev_issue_zeroout);
@@ -360,18 +365,49 @@ EXPORT_SYMBOL(__blkdev_issue_zeroout);
int blkdev_issue_zeroout(struct block_device *bdev, sector_t sector,
sector_t nr_sects, gfp_t gfp_mask, unsigned flags)
{
- int ret;
- struct bio *bio = NULL;
+ int ret = 0;
+ sector_t bs_mask;
+ struct bio *bio;
struct blk_plug plug;
+ bool try_write_zeroes = !!bdev_write_zeroes_sectors(bdev);
+ bs_mask = (bdev_logical_block_size(bdev) >> 9) - 1;
+ if ((sector | nr_sects) & bs_mask)
+ return -EINVAL;
+
+retry:
+ bio = NULL;
blk_start_plug(&plug);
- ret = __blkdev_issue_zeroout(bdev, sector, nr_sects, gfp_mask,
- &bio, flags);
+ if (try_write_zeroes) {
+ ret = __blkdev_issue_write_zeroes(bdev, sector, nr_sects,
+ gfp_mask, &bio, flags);
+ } else if (!(flags & BLKDEV_ZERO_NOFALLBACK)) {
+ ret = __blkdev_issue_zero_pages(bdev, sector, nr_sects,
+ gfp_mask, &bio);
+ } else {
+ /* No zeroing offload support */
+ ret = -EOPNOTSUPP;
+ }
if (ret == 0 && bio) {
ret = submit_bio_wait(bio);
bio_put(bio);
}
blk_finish_plug(&plug);
+ if (ret && try_write_zeroes) {
+ if (!(flags & BLKDEV_ZERO_NOFALLBACK)) {
+ try_write_zeroes = false;
+ goto retry;
+ }
+ if (!bdev_write_zeroes_sectors(bdev)) {
+ /*
+ * Zeroing offload support was indicated, but the
+ * device reported ILLEGAL REQUEST (for some devices
+ * there is no non-destructive way to verify whether
+ * WRITE ZEROES is actually supported).
+ */
+ ret = -EOPNOTSUPP;
+ }
+ }
return ret;
}
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index 03471b3fce86..c2042f822b03 100644
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -282,8 +282,8 @@ void drbd_request_endio(struct bio *bio)
what = COMPLETED_OK;
}
- bio_put(req->private_bio);
req->private_bio = ERR_PTR(blk_status_to_errno(bio->bi_status));
+ bio_put(bio);
/* not req_mod(), we need irqsave here! */
spin_lock_irqsave(&device->resource->req_lock, flags);
diff --git a/drivers/dax/super.c b/drivers/dax/super.c
index c4cd034a3820..6c179c2a9ff9 100644
--- a/drivers/dax/super.c
+++ b/drivers/dax/super.c
@@ -73,42 +73,50 @@ EXPORT_SYMBOL_GPL(fs_dax_get_by_bdev);
/**
* __bdev_dax_supported() - Check if the device supports dax for filesystem
- * @sb: The superblock of the device
+ * @bdev: block device to check
* @blocksize: The block size of the device
*
* This is a library function for filesystems to check if the block device
* can be mounted with dax option.
*
- * Return: negative errno if unsupported, 0 if supported.
+ * Return: true if supported, false if unsupported
*/
-int __bdev_dax_supported(struct super_block *sb, int blocksize)
+bool __bdev_dax_supported(struct block_device *bdev, int blocksize)
{
- struct block_device *bdev = sb->s_bdev;
struct dax_device *dax_dev;
+ struct request_queue *q;
pgoff_t pgoff;
int err, id;
void *kaddr;
pfn_t pfn;
long len;
+ char buf[BDEVNAME_SIZE];
if (blocksize != PAGE_SIZE) {
- pr_err("VFS (%s): error: unsupported blocksize for dax\n",
- sb->s_id);
- return -EINVAL;
+ pr_debug("%s: error: unsupported blocksize for dax\n",
+ bdevname(bdev, buf));
+ return false;
+ }
+
+ q = bdev_get_queue(bdev);
+ if (!q || !blk_queue_dax(q)) {
+ pr_debug("%s: error: request queue doesn't support dax\n",
+ bdevname(bdev, buf));
+ return false;
}
err = bdev_dax_pgoff(bdev, 0, PAGE_SIZE, &pgoff);
if (err) {
- pr_err("VFS (%s): error: unaligned partition for dax\n",
- sb->s_id);
- return err;
+ pr_debug("%s: error: unaligned partition for dax\n",
+ bdevname(bdev, buf));
+ return false;
}
dax_dev = dax_get_by_host(bdev->bd_disk->disk_name);
if (!dax_dev) {
- pr_err("VFS (%s): error: device does not support dax\n",
- sb->s_id);
- return -EOPNOTSUPP;
+ pr_debug("%s: error: device does not support dax\n",
+ bdevname(bdev, buf));
+ return false;
}
id = dax_read_lock();
@@ -118,12 +126,12 @@ int __bdev_dax_supported(struct super_block *sb, int blocksize)
put_dax(dax_dev);
if (len < 1) {
- pr_err("VFS (%s): error: dax access failed (%ld)",
- sb->s_id, len);
- return len < 0 ? len : -EIO;
+ pr_debug("%s: error: dax access failed (%ld)\n",
+ bdevname(bdev, buf), len);
+ return false;
}
- return 0;
+ return true;
}
EXPORT_SYMBOL_GPL(__bdev_dax_supported);
#endif
diff --git a/drivers/gpu/drm/drm_property.c b/drivers/gpu/drm/drm_property.c
index bc5128203056..78e630771214 100644
--- a/drivers/gpu/drm/drm_property.c
+++ b/drivers/gpu/drm/drm_property.c
@@ -516,7 +516,7 @@ static void drm_property_free_blob(struct kref *kref)
drm_mode_object_unregister(blob->dev, &blob->base);
- kfree(blob);
+ kvfree(blob);
}
/**
@@ -543,7 +543,7 @@ drm_property_create_blob(struct drm_device *dev, size_t length,
if (!length || length > ULONG_MAX - sizeof(struct drm_property_blob))
return ERR_PTR(-EINVAL);
- blob = kzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
+ blob = kvzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
if (!blob)
return ERR_PTR(-ENOMEM);
@@ -559,7 +559,7 @@ drm_property_create_blob(struct drm_device *dev, size_t length,
ret = __drm_mode_object_add(dev, &blob->base, DRM_MODE_OBJECT_BLOB,
true, drm_property_free_blob);
if (ret) {
- kfree(blob);
+ kvfree(blob);
return ERR_PTR(-EINVAL);
}
diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c
index 2ebdc6d5a76e..d5583190f3e4 100644
--- a/drivers/gpu/drm/udl/udl_fb.c
+++ b/drivers/gpu/drm/udl/udl_fb.c
@@ -137,7 +137,10 @@ int udl_handle_damage(struct udl_framebuffer *fb, int x, int y,
if (cmd > (char *) urb->transfer_buffer) {
/* Send partial buffer remaining before exiting */
- int len = cmd - (char *) urb->transfer_buffer;
+ int len;
+ if (cmd < (char *) urb->transfer_buffer + urb->transfer_buffer_length)
+ *cmd++ = 0xAF;
+ len = cmd - (char *) urb->transfer_buffer;
ret = udl_submit_urb(dev, urb, len);
bytes_sent += len;
} else
diff --git a/drivers/gpu/drm/udl/udl_transfer.c b/drivers/gpu/drm/udl/udl_transfer.c
index 0c87b1ac6b68..b992644c17e6 100644
--- a/drivers/gpu/drm/udl/udl_transfer.c
+++ b/drivers/gpu/drm/udl/udl_transfer.c
@@ -153,11 +153,11 @@ static void udl_compress_hline16(
raw_pixels_count_byte = cmd++; /* we'll know this later */
raw_pixel_start = pixel;
- cmd_pixel_end = pixel + (min(MAX_CMD_PIXELS + 1,
- min((int)(pixel_end - pixel) / bpp,
- (int)(cmd_buffer_end - cmd) / 2))) * bpp;
+ cmd_pixel_end = pixel + min3(MAX_CMD_PIXELS + 1UL,
+ (unsigned long)(pixel_end - pixel) / bpp,
+ (unsigned long)(cmd_buffer_end - 1 - cmd) / 2) * bpp;
- prefetch_range((void *) pixel, (cmd_pixel_end - pixel) * bpp);
+ prefetch_range((void *) pixel, cmd_pixel_end - pixel);
pixel_val16 = get_pixel_val16(pixel, bpp);
while (pixel < cmd_pixel_end) {
@@ -193,6 +193,9 @@ static void udl_compress_hline16(
if (pixel > raw_pixel_start) {
/* finalize last RAW span */
*raw_pixels_count_byte = ((pixel-raw_pixel_start) / bpp) & 0xFF;
+ } else {
+ /* undo unused byte */
+ cmd--;
}
*cmd_pixels_count_byte = ((pixel - cmd_pixel_start) / bpp) & 0xFF;
diff --git a/drivers/hid/hid-debug.c b/drivers/hid/hid-debug.c
index 5271db593478..ae8c8e66a6c4 100644
--- a/drivers/hid/hid-debug.c
+++ b/drivers/hid/hid-debug.c
@@ -1154,6 +1154,8 @@ static ssize_t hid_debug_events_read(struct file *file, char __user *buffer,
goto out;
if (list->tail > list->head) {
len = list->tail - list->head;
+ if (len > count)
+ len = count;
if (copy_to_user(buffer + ret, &list->hid_debug_buf[list->head], len)) {
ret = -EFAULT;
@@ -1163,6 +1165,8 @@ static ssize_t hid_debug_events_read(struct file *file, char __user *buffer,
list->head += len;
} else {
len = HID_DEBUG_BUFSIZE - list->head;
+ if (len > count)
+ len = count;
if (copy_to_user(buffer, &list->hid_debug_buf[list->head], len)) {
ret = -EFAULT;
@@ -1170,7 +1174,9 @@ static ssize_t hid_debug_events_read(struct file *file, char __user *buffer,
}
list->head = 0;
ret += len;
- goto copy_rest;
+ count -= len;
+ if (count > 0)
+ goto copy_rest;
}
}
diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c
index 3535073a9a7d..d92827556389 100644
--- a/drivers/hid/i2c-hid/i2c-hid.c
+++ b/drivers/hid/i2c-hid/i2c-hid.c
@@ -476,7 +476,7 @@ static void i2c_hid_get_input(struct i2c_hid *ihid)
return;
}
- if ((ret_size > size) || (ret_size <= 2)) {
+ if ((ret_size > size) || (ret_size < 2)) {
dev_err(&ihid->client->dev, "%s: incomplete report (%d/%d)\n",
__func__, size, ret_size);
return;
diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c
index 7d749b19c27c..cf307bdc3d53 100644
--- a/drivers/hid/usbhid/hiddev.c
+++ b/drivers/hid/usbhid/hiddev.c
@@ -36,6 +36,7 @@
#include <linux/hiddev.h>
#include <linux/compat.h>
#include <linux/vmalloc.h>
+#include <linux/nospec.h>
#include "usbhid.h"
#ifdef CONFIG_USB_DYNAMIC_MINORS
@@ -469,10 +470,14 @@ static noinline int hiddev_ioctl_usage(struct hiddev *hiddev, unsigned int cmd,
if (uref->field_index >= report->maxfield)
goto inval;
+ uref->field_index = array_index_nospec(uref->field_index,
+ report->maxfield);
field = report->field[uref->field_index];
if (uref->usage_index >= field->maxusage)
goto inval;
+ uref->usage_index = array_index_nospec(uref->usage_index,
+ field->maxusage);
uref->usage_code = field->usage[uref->usage_index].hid;
@@ -499,6 +504,8 @@ static noinline int hiddev_ioctl_usage(struct hiddev *hiddev, unsigned int cmd,
if (uref->field_index >= report->maxfield)
goto inval;
+ uref->field_index = array_index_nospec(uref->field_index,
+ report->maxfield);
field = report->field[uref->field_index];
@@ -753,6 +760,8 @@ static long hiddev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
if (finfo.field_index >= report->maxfield)
break;
+ finfo.field_index = array_index_nospec(finfo.field_index,
+ report->maxfield);
field = report->field[finfo.field_index];
memset(&finfo, 0, sizeof(finfo));
@@ -797,6 +806,8 @@ static long hiddev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
if (cinfo.index >= hid->maxcollection)
break;
+ cinfo.index = array_index_nospec(cinfo.index,
+ hid->maxcollection);
cinfo.type = hid->collection[cinfo.index].type;
cinfo.usage = hid->collection[cinfo.index].usage;
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 4287fc9f3527..f9cd81375f28 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -883,9 +883,7 @@ EXPORT_SYMBOL_GPL(dm_table_set_type);
static int device_supports_dax(struct dm_target *ti, struct dm_dev *dev,
sector_t start, sector_t len, void *data)
{
- struct request_queue *q = bdev_get_queue(dev->bdev);
-
- return q && blk_queue_dax(q);
+ return bdev_dax_supported(dev->bdev, PAGE_SIZE);
}
static bool dm_table_supports_dax(struct dm_table *t)
@@ -1813,6 +1811,11 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
}
blk_queue_write_cache(q, wc, fua);
+ if (dm_table_supports_dax(t))
+ queue_flag_set_unlocked(QUEUE_FLAG_DAX, q);
+ else
+ queue_flag_clear_unlocked(QUEUE_FLAG_DAX, q);
+
if (dm_table_supports_dax_write_cache(t))
dax_write_cache(t->md->dax_dev, true);
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 1dfc855ac708..24ec6e039448 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -961,8 +961,7 @@ static long dm_dax_direct_access(struct dax_device *dax_dev, pgoff_t pgoff,
if (len < 1)
goto out;
nr_pages = min(len, nr_pages);
- if (ti->type->direct_access)
- ret = ti->type->direct_access(ti, pgoff, nr_pages, kaddr, pfn);
+ ret = ti->type->direct_access(ti, pgoff, nr_pages, kaddr, pfn);
out:
dm_put_live_table(md, srcu_idx);
@@ -2050,9 +2049,6 @@ int dm_setup_md_queue(struct mapped_device *md, struct dm_table *t)
*/
bioset_free(md->queue->bio_split);
md->queue->bio_split = NULL;
-
- if (type == DM_TYPE_DAX_BIO_BASED)
- queue_flag_set_unlocked(QUEUE_FLAG_DAX, md->queue);
break;
case DM_TYPE_NONE:
WARN_ON_ONCE(true);
diff --git a/drivers/media/i2c/cx25840/cx25840-core.c b/drivers/media/i2c/cx25840/cx25840-core.c
index 39f51daa7558..c5642813eff1 100644
--- a/drivers/media/i2c/cx25840/cx25840-core.c
+++ b/drivers/media/i2c/cx25840/cx25840-core.c
@@ -463,8 +463,13 @@ static void cx23885_initialize(struct i2c_client *client)
{
DEFINE_WAIT(wait);
struct cx25840_state *state = to_state(i2c_get_clientdata(client));
+ u32 clk_freq = 0;
struct workqueue_struct *q;
+ /* cx23885 sets hostdata to clk_freq pointer */
+ if (v4l2_get_subdev_hostdata(&state->sd))
+ clk_freq = *((u32 *)v4l2_get_subdev_hostdata(&state->sd));
+
/*
* Come out of digital power down
* The CX23888, at least, needs this, otherwise registers aside from
@@ -500,8 +505,13 @@ static void cx23885_initialize(struct i2c_client *client)
* 50.0 MHz * (0xb + 0xe8ba26/0x2000000)/4 = 5 * 28.636363 MHz
* 572.73 MHz before post divide
*/
- /* HVR1850 or 50MHz xtal */
- cx25840_write(client, 0x2, 0x71);
+ if (clk_freq == 25000000) {
+ /* 888/ImpactVCBe or 25Mhz xtal */
+ ; /* nothing to do */
+ } else {
+ /* HVR1850 or 50MHz xtal */
+ cx25840_write(client, 0x2, 0x71);
+ }
cx25840_write4(client, 0x11c, 0x01d1744c);
cx25840_write4(client, 0x118, 0x00000416);
cx25840_write4(client, 0x404, 0x0010253e);
@@ -544,9 +554,15 @@ static void cx23885_initialize(struct i2c_client *client)
/* HVR1850 */
switch (state->id) {
case CX23888_AV:
- /* 888/HVR1250 specific */
- cx25840_write4(client, 0x10c, 0x13333333);
- cx25840_write4(client, 0x108, 0x00000515);
+ if (clk_freq == 25000000) {
+ /* 888/ImpactVCBe or 25MHz xtal */
+ cx25840_write4(client, 0x10c, 0x01b6db7b);
+ cx25840_write4(client, 0x108, 0x00000512);
+ } else {
+ /* 888/HVR1250 or 50MHz xtal */
+ cx25840_write4(client, 0x10c, 0x13333333);
+ cx25840_write4(client, 0x108, 0x00000515);
+ }
break;
default:
cx25840_write4(client, 0x10c, 0x002be2c9);
@@ -576,7 +592,7 @@ static void cx23885_initialize(struct i2c_client *client)
* 368.64 MHz before post divide
* 122.88 MHz / 0xa = 12.288 MHz
*/
- /* HVR1850 or 50MHz xtal */
+ /* HVR1850 or 50MHz xtal or 25MHz xtal */
cx25840_write4(client, 0x114, 0x017dbf48);
cx25840_write4(client, 0x110, 0x000a030e);
break;
diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c
index 6d9adcaa26ba..ffbb178c6918 100644
--- a/drivers/media/v4l2-core/videobuf2-core.c
+++ b/drivers/media/v4l2-core/videobuf2-core.c
@@ -1689,6 +1689,15 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
for (i = 0; i < q->num_buffers; ++i) {
struct vb2_buffer *vb = q->bufs[i];
+ if (vb->state == VB2_BUF_STATE_PREPARED ||
+ vb->state == VB2_BUF_STATE_QUEUED) {
+ unsigned int plane;
+
+ for (plane = 0; plane < vb->num_planes; ++plane)
+ call_void_memop(vb, finish,
+ vb->planes[plane].mem_priv);
+ }
+
if (vb->state != VB2_BUF_STATE_DEQUEUED) {
vb->state = VB2_BUF_STATE_PREPARED;
call_void_vb_qop(vb, buf_finish, vb);
diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c
index ac76c10c042f..af3d207c9cc4 100644
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -42,7 +42,7 @@
#define AMD_BOOTLOC_BUG
#define FORCE_WORD_WRITE 0
-#define MAX_WORD_RETRIES 3
+#define MAX_RETRIES 3
#define SST49LF004B 0x0060
#define SST49LF040B 0x0050
@@ -1647,7 +1647,7 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
map_write( map, CMD(0xF0), chip->start );
/* FIXME - should have reset delay before continuing */
- if (++retry_cnt <= MAX_WORD_RETRIES)
+ if (++retry_cnt <= MAX_RETRIES)
goto retry;
ret = -EIO;
@@ -2106,7 +2106,7 @@ static int do_panic_write_oneword(struct map_info *map, struct flchip *chip,
map_write(map, CMD(0xF0), chip->start);
/* FIXME - should have reset delay before continuing */
- if (++retry_cnt <= MAX_WORD_RETRIES)
+ if (++retry_cnt <= MAX_RETRIES)
goto retry;
ret = -EIO;
@@ -2241,6 +2241,7 @@ static int __xipram do_erase_chip(struct map_info *map, struct flchip *chip)
unsigned long int adr;
DECLARE_WAITQUEUE(wait, current);
int ret = 0;
+ int retry_cnt = 0;
adr = cfi->addr_unlock1;
@@ -2258,6 +2259,7 @@ static int __xipram do_erase_chip(struct map_info *map, struct flchip *chip)
ENABLE_VPP(map);
xip_disable(map, chip, adr);
+ retry:
cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL);
cfi_send_gen_cmd(0x55, cfi->addr_unlock2, chip->start, map, cfi, cfi->device_type, NULL);
cfi_send_gen_cmd(0x80, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL);
@@ -2294,12 +2296,13 @@ static int __xipram do_erase_chip(struct map_info *map, struct flchip *chip)
chip->erase_suspended = 0;
}
- if (chip_ready(map, adr))
+ if (chip_good(map, adr, map_word_ff(map)))
break;
if (time_after(jiffies, timeo)) {
printk(KERN_WARNING "MTD %s(): software timeout\n",
__func__ );
+ ret = -EIO;
break;
}
@@ -2307,12 +2310,15 @@ static int __xipram do_erase_chip(struct map_info *map, struct flchip *chip)
UDELAY(map, chip, adr, 1000000/HZ);
}
/* Did we succeed? */
- if (!chip_good(map, adr, map_word_ff(map))) {
+ if (ret) {
/* reset on all failures. */
map_write( map, CMD(0xF0), chip->start );
/* FIXME - should have reset delay before continuing */
- ret = -EIO;
+ if (++retry_cnt <= MAX_RETRIES) {
+ ret = 0;
+ goto retry;
+ }
}
chip->state = FL_READY;
@@ -2331,6 +2337,7 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
unsigned long timeo = jiffies + HZ;
DECLARE_WAITQUEUE(wait, current);
int ret = 0;
+ int retry_cnt = 0;
adr += chip->start;
@@ -2348,6 +2355,7 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
ENABLE_VPP(map);
xip_disable(map, chip, adr);
+ retry:
cfi_send_gen_cmd(0xAA, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL);
cfi_send_gen_cmd(0x55, cfi->addr_unlock2, chip->start, map, cfi, cfi->device_type, NULL);
cfi_send_gen_cmd(0x80, cfi->addr_unlock1, chip->start, map, cfi, cfi->device_type, NULL);
@@ -2384,7 +2392,7 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
chip->erase_suspended = 0;
}
- if (chip_ready(map, adr)) {
+ if (chip_good(map, adr, map_word_ff(map))) {
xip_enable(map, chip, adr);
break;
}
@@ -2393,6 +2401,7 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
xip_enable(map, chip, adr);
printk(KERN_WARNING "MTD %s(): software timeout\n",
__func__ );
+ ret = -EIO;
break;
}
@@ -2400,12 +2409,15 @@ static int __xipram do_erase_oneblock(struct map_info *map, struct flchip *chip,
UDELAY(map, chip, adr, 1000000/HZ);
}
/* Did we succeed? */
- if (!chip_good(map, adr, map_word_ff(map))) {
+ if (ret) {
/* reset on all failures. */
map_write( map, CMD(0xF0), chip->start );
/* FIXME - should have reset delay before continuing */
- ret = -EIO;
+ if (++retry_cnt <= MAX_RETRIES) {
+ ret = 0;
+ goto retry;
+ }
}
chip->state = FL_READY;
diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c
index 53e5e0337c3e..fcb575d55b89 100644
--- a/drivers/mtd/nand/mxc_nand.c
+++ b/drivers/mtd/nand/mxc_nand.c
@@ -48,7 +48,7 @@
#define NFC_V1_V2_CONFIG (host->regs + 0x0a)
#define NFC_V1_V2_ECC_STATUS_RESULT (host->regs + 0x0c)
#define NFC_V1_V2_RSLTMAIN_AREA (host->regs + 0x0e)
-#define NFC_V1_V2_RSLTSPARE_AREA (host->regs + 0x10)
+#define NFC_V21_RSLTSPARE_AREA (host->regs + 0x10)
#define NFC_V1_V2_WRPROT (host->regs + 0x12)
#define NFC_V1_UNLOCKSTART_BLKADDR (host->regs + 0x14)
#define NFC_V1_UNLOCKEND_BLKADDR (host->regs + 0x16)
@@ -1119,6 +1119,9 @@ static void preset_v2(struct mtd_info *mtd)
writew(config1, NFC_V1_V2_CONFIG1);
/* preset operation */
+ /* spare area size in 16-bit half-words */
+ writew(mtd->oobsize / 2, NFC_V21_RSLTSPARE_AREA);
+
/* Unlock the internal RAM Buffer */
writew(0x2, NFC_V1_V2_CONFIG);
diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
index 5b4f05805006..519a021c0a25 100644
--- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
@@ -2863,7 +2863,7 @@ static int dpaa_remove(struct platform_device *pdev)
struct device *dev;
int err;
- dev = pdev->dev.parent;
+ dev = &pdev->dev;
net_dev = dev_get_drvdata(dev);
priv = netdev_priv(net_dev);
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 17a4cc138b00..4d49fb8f2bbc 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -51,6 +51,7 @@ static int sg_version_num = 30536; /* 2 digits for each component */
#include <linux/atomic.h>
#include <linux/ratelimit.h>
#include <linux/uio.h>
+#include <linux/cred.h> /* for sg_check_file_access() */
#include "scsi.h"
#include <scsi/scsi_dbg.h>
@@ -210,6 +211,33 @@ static void sg_device_destroy(struct kref *kref);
sdev_prefix_printk(prefix, (sdp)->device, \
(sdp)->disk->disk_name, fmt, ##a)
+/*
+ * The SCSI interfaces that use read() and write() as an asynchronous variant of
+ * ioctl(..., SG_IO, ...) are fundamentally unsafe, since there are lots of ways
+ * to trigger read() and write() calls from various contexts with elevated
+ * privileges. This can lead to kernel memory corruption (e.g. if these
+ * interfaces are called through splice()) and privilege escalation inside
+ * userspace (e.g. if a process with access to such a device passes a file
+ * descriptor to a SUID binary as stdin/stdout/stderr).
+ *
+ * This function provides protection for the legacy API by restricting the
+ * calling context.
+ */
+static int sg_check_file_access(struct file *filp, const char *caller)
+{
+ if (filp->f_cred != current_real_cred()) {
+ pr_err_once("%s: process %d (%s) changed security contexts after opening file descriptor, this is not allowed.\n",
+ caller, task_tgid_vnr(current), current->comm);
+ return -EPERM;
+ }
+ if (uaccess_kernel()) {
+ pr_err_once("%s: process %d (%s) called from kernel context, this is not allowed.\n",
+ caller, task_tgid_vnr(current), current->comm);
+ return -EACCES;
+ }
+ return 0;
+}
+
static int sg_allow_access(struct file *filp, unsigned char *cmd)
{
struct sg_fd *sfp = filp->private_data;
@@ -394,6 +422,14 @@ sg_read(struct file *filp, char __user *buf, size_t count, loff_t * ppos)
struct sg_header *old_hdr = NULL;
int retval = 0;
+ /*
+ * This could cause a response to be stranded. Close the associated
+ * file descriptor to free up any resources being held.
+ */
+ retval = sg_check_file_access(filp, __func__);
+ if (retval)
+ return retval;
+
if ((!(sfp = (Sg_fd *) filp->private_data)) || (!(sdp = sfp->parentdp)))
return -ENXIO;
SCSI_LOG_TIMEOUT(3, sg_printk(KERN_INFO, sdp,
@@ -581,9 +617,11 @@ sg_write(struct file *filp, const char __user *buf, size_t count, loff_t * ppos)
struct sg_header old_hdr;
sg_io_hdr_t *hp;
unsigned char cmnd[SG_MAX_CDB_SIZE];
+ int retval;
- if (unlikely(uaccess_kernel()))
- return -EINVAL;
+ retval = sg_check_file_access(filp, __func__);
+ if (retval)
+ return retval;
if ((!(sfp = (Sg_fd *) filp->private_data)) || (!(sdp = sfp->parentdp)))
return -ENXIO;
diff --git a/drivers/staging/comedi/drivers/quatech_daqp_cs.c b/drivers/staging/comedi/drivers/quatech_daqp_cs.c
index 802f51e46405..171960568356 100644
--- a/drivers/staging/comedi/drivers/quatech_daqp_cs.c
+++ b/drivers/staging/comedi/drivers/quatech_daqp_cs.c
@@ -642,7 +642,7 @@ static int daqp_ao_insn_write(struct comedi_device *dev,
/* Make sure D/A update mode is direct update */
outb(0, dev->iobase + DAQP_AUX_REG);
- for (i = 0; i > insn->n; i++) {
+ for (i = 0; i < insn->n; i++) {
unsigned int val = data[i];
int ret;
diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c
index 4ba5004a069e..fd6ce9996488 100644
--- a/drivers/target/target_core_pr.c
+++ b/drivers/target/target_core_pr.c
@@ -3729,11 +3729,16 @@ core_scsi3_pri_read_keys(struct se_cmd *cmd)
* Check for overflow of 8byte PRI READ_KEYS payload and
* next reservation key list descriptor.
*/
- if ((add_len + 8) > (cmd->data_length - 8))
- break;
-
- put_unaligned_be64(pr_reg->pr_res_key, &buf[off]);
- off += 8;
+ if (off + 8 <= cmd->data_length) {
+ put_unaligned_be64(pr_reg->pr_res_key, &buf[off]);
+ off += 8;
+ }
+ /*
+ * SPC5r17: 6.16.2 READ KEYS service action
+ * The ADDITIONAL LENGTH field indicates the number of bytes in
+ * the Reservation key list. The contents of the ADDITIONAL
+ * LENGTH field are not altered based on the allocation length
+ */
add_len += 8;
}
spin_unlock(&dev->t10_pr.registration_lock);
diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
index fb4e6a7ee521..d639378e36ac 100644
--- a/drivers/vfio/vfio_iommu_type1.c
+++ b/drivers/vfio/vfio_iommu_type1.c
@@ -339,18 +339,16 @@ static int vaddr_get_pfn(struct mm_struct *mm, unsigned long vaddr,
struct page *page[1];
struct vm_area_struct *vma;
struct vm_area_struct *vmas[1];
+ unsigned int flags = 0;
int ret;
+ if (prot & IOMMU_WRITE)
+ flags |= FOLL_WRITE;
+
+ down_read(&mm->mmap_sem);
if (mm == current->mm) {
- ret = get_user_pages_longterm(vaddr, 1, !!(prot & IOMMU_WRITE),
- page, vmas);
+ ret = get_user_pages_longterm(vaddr, 1, flags, page, vmas);
} else {
- unsigned int flags = 0;
-
- if (prot & IOMMU_WRITE)
- flags |= FOLL_WRITE;
-
- down_read(&mm->mmap_sem);
ret = get_user_pages_remote(NULL, mm, vaddr, 1, flags, page,
vmas, NULL);
/*
@@ -364,8 +362,8 @@ static int vaddr_get_pfn(struct mm_struct *mm, unsigned long vaddr,
ret = -EOPNOTSUPP;
put_page(page[0]);
}
- up_read(&mm->mmap_sem);
}
+ up_read(&mm->mmap_sem);
if (ret == 1) {
*pfn = page_to_pfn(page[0]);
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 33d6eb58ce34..f29cdb1cdeb7 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -1340,6 +1340,7 @@ typedef int (mid_handle_t)(struct TCP_Server_Info *server,
/* one of these for every pending CIFS request to the server */
struct mid_q_entry {
struct list_head qhead; /* mids waiting on reply from this server */
+ struct kref refcount;
struct TCP_Server_Info *server; /* server corresponding to this mid */
__u64 mid; /* multiplex id */
__u32 pid; /* process id */
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 762d513a5087..ccdb42f71b2e 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -76,6 +76,7 @@ extern struct mid_q_entry *AllocMidQEntry(const struct smb_hdr *smb_buffer,
struct TCP_Server_Info *server);
extern void DeleteMidQEntry(struct mid_q_entry *midEntry);
extern void cifs_delete_mid(struct mid_q_entry *mid);
+extern void cifs_mid_q_entry_release(struct mid_q_entry *midEntry);
extern void cifs_wake_up_task(struct mid_q_entry *mid);
extern int cifs_handle_standard(struct TCP_Server_Info *server,
struct mid_q_entry *mid);
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 7fd39ea6e22e..b5a436583469 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -150,8 +150,14 @@ cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command)
* greater than cifs socket timeout which is 7 seconds
*/
while (server->tcpStatus == CifsNeedReconnect) {
- wait_event_interruptible_timeout(server->response_q,
- (server->tcpStatus != CifsNeedReconnect), 10 * HZ);
+ rc = wait_event_interruptible_timeout(server->response_q,
+ (server->tcpStatus != CifsNeedReconnect),
+ 10 * HZ);
+ if (rc < 0) {
+ cifs_dbg(FYI, "%s: aborting reconnect due to a received"
+ " signal by the process\n", __func__);
+ return -ERESTARTSYS;
+ }
/* are we still trying to reconnect? */
if (server->tcpStatus != CifsNeedReconnect)
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index f7db2fedfa8c..fd24c72bd2cd 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -889,6 +889,7 @@ cifs_demultiplex_thread(void *p)
continue;
server->total_read += length;
+ mid_entry = NULL;
if (server->ops->is_transform_hdr &&
server->ops->receive_transform &&
server->ops->is_transform_hdr(buf)) {
@@ -903,8 +904,11 @@ cifs_demultiplex_thread(void *p)
length = mid_entry->receive(server, mid_entry);
}
- if (length < 0)
+ if (length < 0) {
+ if (mid_entry)
+ cifs_mid_q_entry_release(mid_entry);
continue;
+ }
if (server->large_buf)
buf = server->bigbuf;
@@ -920,6 +924,8 @@ cifs_demultiplex_thread(void *p)
if (!mid_entry->multiRsp || mid_entry->multiEnd)
mid_entry->callback(mid_entry);
+
+ cifs_mid_q_entry_release(mid_entry);
} else if (server->ops->is_oplock_break &&
server->ops->is_oplock_break(buf, server)) {
cifs_dbg(FYI, "Received oplock break\n");
diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c
index a723df3e0197..d8cd82001c1c 100644
--- a/fs/cifs/smb1ops.c
+++ b/fs/cifs/smb1ops.c
@@ -105,6 +105,7 @@ cifs_find_mid(struct TCP_Server_Info *server, char *buffer)
if (compare_mid(mid->mid, buf) &&
mid->mid_state == MID_REQUEST_SUBMITTED &&
le16_to_cpu(mid->command) == buf->Command) {
+ kref_get(&mid->refcount);
spin_unlock(&GlobalMid_Lock);
return mid;
}
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 36bc9a7eb8ea..83267ac3a3f0 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -202,6 +202,7 @@ smb2_find_mid(struct TCP_Server_Info *server, char *buf)
if ((mid->mid == wire_mid) &&
(mid->mid_state == MID_REQUEST_SUBMITTED) &&
(mid->command == shdr->Command)) {
+ kref_get(&mid->refcount);
spin_unlock(&GlobalMid_Lock);
return mid;
}
@@ -635,6 +636,8 @@ smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
rc = SMB2_set_ea(xid, tcon, fid.persistent_fid, fid.volatile_fid, ea,
len);
+ kfree(ea);
+
SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
return rc;
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 5247b40e57f6..0480cd9a9e81 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -153,7 +153,7 @@ smb2_hdr_assemble(struct smb2_sync_hdr *shdr, __le16 smb2_cmd,
static int
smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon)
{
- int rc = 0;
+ int rc;
struct nls_table *nls_codepage;
struct cifs_ses *ses;
struct TCP_Server_Info *server;
@@ -164,10 +164,10 @@ smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon)
* for those three - in the calling routine.
*/
if (tcon == NULL)
- return rc;
+ return 0;
if (smb2_command == SMB2_TREE_CONNECT)
- return rc;
+ return 0;
if (tcon->tidStatus == CifsExiting) {
/*
@@ -210,8 +210,14 @@ smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon)
return -EAGAIN;
}
- wait_event_interruptible_timeout(server->response_q,
- (server->tcpStatus != CifsNeedReconnect), 10 * HZ);
+ rc = wait_event_interruptible_timeout(server->response_q,
+ (server->tcpStatus != CifsNeedReconnect),
+ 10 * HZ);
+ if (rc < 0) {
+ cifs_dbg(FYI, "%s: aborting reconnect due to a received"
+ " signal by the process\n", __func__);
+ return -ERESTARTSYS;
+ }
/* are we still trying to reconnect? */
if (server->tcpStatus != CifsNeedReconnect)
@@ -229,7 +235,7 @@ smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon)
}
if (!tcon->ses->need_reconnect && !tcon->need_reconnect)
- return rc;
+ return 0;
nls_codepage = load_nls_default();
@@ -332,7 +338,10 @@ smb2_plain_req_init(__le16 smb2_command, struct cifs_tcon *tcon,
return rc;
/* BB eventually switch this to SMB2 specific small buf size */
- *request_buf = cifs_small_buf_get();
+ if (smb2_command == SMB2_SET_INFO)
+ *request_buf = cifs_buf_get();
+ else
+ *request_buf = cifs_small_buf_get();
if (*request_buf == NULL) {
/* BB should we add a retry in here if not a writepage? */
return -ENOMEM;
@@ -3162,7 +3171,7 @@ send_set_info(const unsigned int xid, struct cifs_tcon *tcon,
}
rc = SendReceive2(xid, ses, iov, num, &resp_buftype, flags, &rsp_iov);
- cifs_small_buf_release(req);
+ cifs_buf_release(req);
rsp = (struct smb2_set_info_rsp *)rsp_iov.iov_base;
if (rc != 0)
diff --git a/fs/cifs/smb2transport.c b/fs/cifs/smb2transport.c
index bf49cb73b9e6..a41fc4a63a59 100644
--- a/fs/cifs/smb2transport.c
+++ b/fs/cifs/smb2transport.c
@@ -548,6 +548,7 @@ smb2_mid_entry_alloc(const struct smb2_sync_hdr *shdr,
temp = mempool_alloc(cifs_mid_poolp, GFP_NOFS);
memset(temp, 0, sizeof(struct mid_q_entry));
+ kref_init(&temp->refcount);
temp->mid = le64_to_cpu(shdr->MessageId);
temp->pid = current->pid;
temp->command = shdr->Command; /* Always LE */
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index 7efbab013957..a10f51dfa7f5 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -56,6 +56,7 @@ AllocMidQEntry(const struct smb_hdr *smb_buffer, struct TCP_Server_Info *server)
temp = mempool_alloc(cifs_mid_poolp, GFP_NOFS);
memset(temp, 0, sizeof(struct mid_q_entry));
+ kref_init(&temp->refcount);
temp->mid = get_mid(smb_buffer);
temp->pid = current->pid;
temp->command = cpu_to_le16(smb_buffer->Command);
@@ -77,6 +78,21 @@ AllocMidQEntry(const struct smb_hdr *smb_buffer, struct TCP_Server_Info *server)
return temp;
}
+static void _cifs_mid_q_entry_release(struct kref *refcount)
+{
+ struct mid_q_entry *mid = container_of(refcount, struct mid_q_entry,
+ refcount);
+
+ mempool_free(mid, cifs_mid_poolp);
+}
+
+void cifs_mid_q_entry_release(struct mid_q_entry *midEntry)
+{
+ spin_lock(&GlobalMid_Lock);
+ kref_put(&midEntry->refcount, _cifs_mid_q_entry_release);
+ spin_unlock(&GlobalMid_Lock);
+}
+
void
DeleteMidQEntry(struct mid_q_entry *midEntry)
{
@@ -105,7 +121,7 @@ DeleteMidQEntry(struct mid_q_entry *midEntry)
}
}
#endif
- mempool_free(midEntry, cifs_mid_poolp);
+ cifs_mid_q_entry_release(midEntry);
}
void
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 1458706bd2ec..726e680a3368 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -953,8 +953,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
blocksize = BLOCK_SIZE << le32_to_cpu(sbi->s_es->s_log_block_size);
if (sbi->s_mount_opt & EXT2_MOUNT_DAX) {
- err = bdev_dax_supported(sb, blocksize);
- if (err)
+ if (!bdev_dax_supported(sb->s_bdev, blocksize))
goto failed_mount;
}
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index 58db8109defa..9c9eafd6bd76 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -184,7 +184,6 @@ static int ext4_init_block_bitmap(struct super_block *sb,
unsigned int bit, bit_max;
struct ext4_sb_info *sbi = EXT4_SB(sb);
ext4_fsblk_t start, tmp;
- int flex_bg = 0;
struct ext4_group_info *grp;
J_ASSERT_BH(bh, buffer_locked(bh));
@@ -217,22 +216,19 @@ static int ext4_init_block_bitmap(struct super_block *sb,
start = ext4_group_first_block_no(sb, block_group);
- if (ext4_has_feature_flex_bg(sb))
- flex_bg = 1;
-
/* Set bits for block and inode bitmaps, and inode table */
tmp = ext4_block_bitmap(sb, gdp);
- if (!flex_bg || ext4_block_in_group(sb, tmp, block_group))
+ if (ext4_block_in_group(sb, tmp, block_group))
ext4_set_bit(EXT4_B2C(sbi, tmp - start), bh->b_data);
tmp = ext4_inode_bitmap(sb, gdp);
- if (!flex_bg || ext4_block_in_group(sb, tmp, block_group))
+ if (ext4_block_in_group(sb, tmp, block_group))
ext4_set_bit(EXT4_B2C(sbi, tmp - start), bh->b_data);
tmp = ext4_inode_table(sb, gdp);
for (; tmp < ext4_inode_table(sb, gdp) +
sbi->s_itb_per_group; tmp++) {
- if (!flex_bg || ext4_block_in_group(sb, tmp, block_group))
+ if (ext4_block_in_group(sb, tmp, block_group))
ext4_set_bit(EXT4_B2C(sbi, tmp - start), bh->b_data);
}
@@ -455,7 +451,16 @@ ext4_read_block_bitmap_nowait(struct super_block *sb, ext4_group_t block_group)
goto verify;
}
ext4_lock_group(sb, block_group);
- if (desc->bg_flags & cpu_to_le16(EXT4_BG_BLOCK_UNINIT)) {
+ if (ext4_has_group_desc_csum(sb) &&
+ (desc->bg_flags & cpu_to_le16(EXT4_BG_BLOCK_UNINIT))) {
+ if (block_group == 0) {
+ ext4_unlock_group(sb, block_group);
+ unlock_buffer(bh);
+ ext4_error(sb, "Block bitmap for bg 0 marked "
+ "uninitialized");
+ err = -EFSCORRUPTED;
+ goto out;
+ }
err = ext4_init_block_bitmap(sb, bh, block_group, desc);
set_bitmap_uptodate(bh);
set_buffer_uptodate(bh);
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 58a0304566db..0abb30d19fa1 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1542,11 +1542,6 @@ static inline struct ext4_inode_info *EXT4_I(struct inode *inode)
static inline int ext4_valid_inum(struct super_block *sb, unsigned long ino)
{
return ino == EXT4_ROOT_INO ||
- ino == EXT4_USR_QUOTA_INO ||
- ino == EXT4_GRP_QUOTA_INO ||
- ino == EXT4_BOOT_LOADER_INO ||
- ino == EXT4_JOURNAL_INO ||
- ino == EXT4_RESIZE_INO ||
(ino >= EXT4_FIRST_INO(sb) &&
ino <= le32_to_cpu(EXT4_SB(sb)->s_es->s_inodes_count));
}
@@ -3049,9 +3044,6 @@ extern struct buffer_head *ext4_get_first_inline_block(struct inode *inode,
extern int ext4_inline_data_fiemap(struct inode *inode,
struct fiemap_extent_info *fieinfo,
int *has_inline, __u64 start, __u64 len);
-extern int ext4_try_to_evict_inline_data(handle_t *handle,
- struct inode *inode,
- int needed);
extern int ext4_inline_data_truncate(struct inode *inode, int *has_inline);
extern int ext4_convert_inline_data(struct inode *inode);
diff --git a/fs/ext4/ext4_extents.h b/fs/ext4/ext4_extents.h
index 8ecf84b8f5a1..a284fb28944b 100644
--- a/fs/ext4/ext4_extents.h
+++ b/fs/ext4/ext4_extents.h
@@ -103,6 +103,7 @@ struct ext4_extent_header {
};
#define EXT4_EXT_MAGIC cpu_to_le16(0xf30a)
+#define EXT4_MAX_EXTENT_DEPTH 5
#define EXT4_EXTENT_TAIL_OFFSET(hdr) \
(sizeof(struct ext4_extent_header) + \
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 883e89a903d1..5592b7726241 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -881,6 +881,12 @@ ext4_find_extent(struct inode *inode, ext4_lblk_t block,
eh = ext_inode_hdr(inode);
depth = ext_depth(inode);
+ if (depth < 0 || depth > EXT4_MAX_EXTENT_DEPTH) {
+ EXT4_ERROR_INODE(inode, "inode has invalid extent depth: %d",
+ depth);
+ ret = -EFSCORRUPTED;
+ goto err;
+ }
if (path) {
ext4_ext_drop_refs(path);
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index f420124ac035..95341bc2b3b7 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -155,7 +155,16 @@ ext4_read_inode_bitmap(struct super_block *sb, ext4_group_t block_group)
}
ext4_lock_group(sb, block_group);
- if (desc->bg_flags & cpu_to_le16(EXT4_BG_INODE_UNINIT)) {
+ if (ext4_has_group_desc_csum(sb) &&
+ (desc->bg_flags & cpu_to_le16(EXT4_BG_INODE_UNINIT))) {
+ if (block_group == 0) {
+ ext4_unlock_group(sb, block_group);
+ unlock_buffer(bh);
+ ext4_error(sb, "Inode bitmap for bg 0 marked "
+ "uninitialized");
+ err = -EFSCORRUPTED;
+ goto out;
+ }
memset(bh->b_data, 0, (EXT4_INODES_PER_GROUP(sb) + 7) / 8);
ext4_mark_bitmap_end(EXT4_INODES_PER_GROUP(sb),
sb->s_blocksize * 8, bh->b_data);
@@ -1000,7 +1009,8 @@ struct inode *__ext4_new_inode(handle_t *handle, struct inode *dir,
/* recheck and clear flag under lock if we still need to */
ext4_lock_group(sb, group);
- if (gdp->bg_flags & cpu_to_le16(EXT4_BG_BLOCK_UNINIT)) {
+ if (ext4_has_group_desc_csum(sb) &&
+ (gdp->bg_flags & cpu_to_le16(EXT4_BG_BLOCK_UNINIT))) {
gdp->bg_flags &= cpu_to_le16(~EXT4_BG_BLOCK_UNINIT);
ext4_free_group_clusters_set(sb, gdp,
ext4_free_clusters_after_init(sb, group, gdp));
diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c
index 8f5dc243effd..7d498f4a3f90 100644
--- a/fs/ext4/inline.c
+++ b/fs/ext4/inline.c
@@ -443,6 +443,7 @@ static int ext4_destroy_inline_data_nolock(handle_t *handle,
memset((void *)ext4_raw_inode(&is.iloc)->i_block,
0, EXT4_MIN_INLINE_DATA_SIZE);
+ memset(ei->i_data, 0, EXT4_MIN_INLINE_DATA_SIZE);
if (ext4_has_feature_extents(inode->i_sb)) {
if (S_ISDIR(inode->i_mode) ||
@@ -892,11 +893,11 @@ int ext4_da_write_inline_data_begin(struct address_space *mapping,
flags |= AOP_FLAG_NOFS;
if (ret == -ENOSPC) {
+ ext4_journal_stop(handle);
ret = ext4_da_convert_inline_data_to_extent(mapping,
inode,
flags,
fsdata);
- ext4_journal_stop(handle);
if (ret == -ENOSPC &&
ext4_should_retry_alloc(inode->i_sb, &retries))
goto retry_journal;
@@ -1864,42 +1865,6 @@ int ext4_inline_data_fiemap(struct inode *inode,
return (error < 0 ? error : 0);
}
-/*
- * Called during xattr set, and if we can sparse space 'needed',
- * just create the extent tree evict the data to the outer block.
- *
- * We use jbd2 instead of page cache to move data to the 1st block
- * so that the whole transaction can be committed as a whole and
- * the data isn't lost because of the delayed page cache write.
- */
-int ext4_try_to_evict_inline_data(handle_t *handle,
- struct inode *inode,
- int needed)
-{
- int error;
- struct ext4_xattr_entry *entry;
- struct ext4_inode *raw_inode;
- struct ext4_iloc iloc;
-
- error = ext4_get_inode_loc(inode, &iloc);
- if (error)
- return error;
-
- raw_inode = ext4_raw_inode(&iloc);
- entry = (struct ext4_xattr_entry *)((void *)raw_inode +
- EXT4_I(inode)->i_inline_off);
- if (EXT4_XATTR_LEN(entry->e_name_len) +
- EXT4_XATTR_SIZE(le32_to_cpu(entry->e_value_size)) < needed) {
- error = -ENOSPC;
- goto out;
- }
-
- error = ext4_convert_inline_data_nolock(handle, inode, &iloc);
-out:
- brelse(iloc.bh);
- return error;
-}
-
int ext4_inline_data_truncate(struct inode *inode, int *has_inline)
{
handle_t *handle;
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index bd6453e78992..c2efe4d2ad87 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -401,9 +401,9 @@ static int __check_block_validity(struct inode *inode, const char *func,
if (!ext4_data_block_valid(EXT4_SB(inode->i_sb), map->m_pblk,
map->m_len)) {
ext4_error_inode(inode, func, line, map->m_pblk,
- "lblock %lu mapped to illegal pblock "
+ "lblock %lu mapped to illegal pblock %llu "
"(length %d)", (unsigned long) map->m_lblk,
- map->m_len);
+ map->m_pblk, map->m_len);
return -EFSCORRUPTED;
}
return 0;
@@ -4455,7 +4455,8 @@ static int __ext4_get_inode_loc(struct inode *inode,
int inodes_per_block, inode_offset;
iloc->bh = NULL;
- if (!ext4_valid_inum(sb, inode->i_ino))
+ if (inode->i_ino < EXT4_ROOT_INO ||
+ inode->i_ino > le32_to_cpu(EXT4_SB(sb)->s_es->s_inodes_count))
return -EFSCORRUPTED;
iloc->block_group = (inode->i_ino - 1) / EXT4_INODES_PER_GROUP(sb);
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 701085620cd8..048c586d9a8b 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2456,7 +2456,8 @@ int ext4_mb_add_groupinfo(struct super_block *sb, ext4_group_t group,
* initialize bb_free to be able to skip
* empty groups without initialization
*/
- if (desc->bg_flags & cpu_to_le16(EXT4_BG_BLOCK_UNINIT)) {
+ if (ext4_has_group_desc_csum(sb) &&
+ (desc->bg_flags & cpu_to_le16(EXT4_BG_BLOCK_UNINIT))) {
meta_group_info[i]->bb_free =
ext4_free_clusters_after_init(sb, group, desc);
} else {
@@ -3023,7 +3024,8 @@ ext4_mb_mark_diskspace_used(struct ext4_allocation_context *ac,
#endif
ext4_set_bits(bitmap_bh->b_data, ac->ac_b_ex.fe_start,
ac->ac_b_ex.fe_len);
- if (gdp->bg_flags & cpu_to_le16(EXT4_BG_BLOCK_UNINIT)) {
+ if (ext4_has_group_desc_csum(sb) &&
+ (gdp->bg_flags & cpu_to_le16(EXT4_BG_BLOCK_UNINIT))) {
gdp->bg_flags &= cpu_to_le16(~EXT4_BG_BLOCK_UNINIT);
ext4_free_group_clusters_set(sb, gdp,
ext4_free_clusters_after_init(sb,
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index ec74d06fa24a..fc32a67a7a19 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -2301,6 +2301,7 @@ static int ext4_check_descriptors(struct super_block *sb,
struct ext4_sb_info *sbi = EXT4_SB(sb);
ext4_fsblk_t first_block = le32_to_cpu(sbi->s_es->s_first_data_block);
ext4_fsblk_t last_block;
+ ext4_fsblk_t last_bg_block = sb_block + ext4_bg_num_gdb(sb, 0) + 1;
ext4_fsblk_t block_bitmap;
ext4_fsblk_t inode_bitmap;
ext4_fsblk_t inode_table;
@@ -2333,6 +2334,14 @@ static int ext4_check_descriptors(struct super_block *sb,
if (!sb_rdonly(sb))
return 0;
}
+ if (block_bitmap >= sb_block + 1 &&
+ block_bitmap <= last_bg_block) {
+ ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
+ "Block bitmap for group %u overlaps "
+ "block group descriptors", i);
+ if (!sb_rdonly(sb))
+ return 0;
+ }
if (block_bitmap < first_block || block_bitmap > last_block) {
ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
"Block bitmap for group %u not in group "
@@ -2347,6 +2356,14 @@ static int ext4_check_descriptors(struct super_block *sb,
if (!sb_rdonly(sb))
return 0;
}
+ if (inode_bitmap >= sb_block + 1 &&
+ inode_bitmap <= last_bg_block) {
+ ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
+ "Inode bitmap for group %u overlaps "
+ "block group descriptors", i);
+ if (!sb_rdonly(sb))
+ return 0;
+ }
if (inode_bitmap < first_block || inode_bitmap > last_block) {
ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
"Inode bitmap for group %u not in group "
@@ -2361,6 +2378,14 @@ static int ext4_check_descriptors(struct super_block *sb,
if (!sb_rdonly(sb))
return 0;
}
+ if (inode_table >= sb_block + 1 &&
+ inode_table <= last_bg_block) {
+ ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
+ "Inode table for group %u overlaps "
+ "block group descriptors", i);
+ if (!sb_rdonly(sb))
+ return 0;
+ }
if (inode_table < first_block ||
inode_table + sbi->s_itb_per_group - 1 > last_block) {
ext4_msg(sb, KERN_ERR, "ext4_check_descriptors: "
@@ -3070,13 +3095,22 @@ static ext4_group_t ext4_has_uninit_itable(struct super_block *sb)
ext4_group_t group, ngroups = EXT4_SB(sb)->s_groups_count;
struct ext4_group_desc *gdp = NULL;
+ if (!ext4_has_group_desc_csum(sb))
+ return ngroups;
+
for (group = 0; group < ngroups; group++) {
gdp = ext4_get_group_desc(sb, group, NULL);
if (!gdp)
continue;
- if (!(gdp->bg_flags & cpu_to_le16(EXT4_BG_INODE_ZEROED)))
+ if (gdp->bg_flags & cpu_to_le16(EXT4_BG_INODE_ZEROED))
+ continue;
+ if (group != 0)
break;
+ ext4_error(sb, "Inode table for bg 0 marked as "
+ "needing zeroing");
+ if (sb_rdonly(sb))
+ return ngroups;
}
return group;
@@ -3715,6 +3749,13 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
le32_to_cpu(es->s_log_block_size));
goto failed_mount;
}
+ if (le32_to_cpu(es->s_log_cluster_size) >
+ (EXT4_MAX_CLUSTER_LOG_SIZE - EXT4_MIN_BLOCK_LOG_SIZE)) {
+ ext4_msg(sb, KERN_ERR,
+ "Invalid log cluster size: %u",
+ le32_to_cpu(es->s_log_cluster_size));
+ goto failed_mount;
+ }
if (le16_to_cpu(sbi->s_es->s_reserved_gdt_blocks) > (blocksize / 4)) {
ext4_msg(sb, KERN_ERR,
@@ -3729,8 +3770,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
" that may contain inline data");
goto failed_mount;
}
- err = bdev_dax_supported(sb, blocksize);
- if (err)
+ if (!bdev_dax_supported(sb->s_bdev, blocksize))
goto failed_mount;
}
@@ -3777,6 +3817,11 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
} else {
sbi->s_inode_size = le16_to_cpu(es->s_inode_size);
sbi->s_first_ino = le32_to_cpu(es->s_first_ino);
+ if (sbi->s_first_ino < EXT4_GOOD_OLD_FIRST_INO) {
+ ext4_msg(sb, KERN_ERR, "invalid first ino: %u",
+ sbi->s_first_ino);
+ goto failed_mount;
+ }
if ((sbi->s_inode_size < EXT4_GOOD_OLD_INODE_SIZE) ||
(!is_power_of_2(sbi->s_inode_size)) ||
(sbi->s_inode_size > blocksize)) {
@@ -3853,13 +3898,6 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
"block size (%d)", clustersize, blocksize);
goto failed_mount;
}
- if (le32_to_cpu(es->s_log_cluster_size) >
- (EXT4_MAX_CLUSTER_LOG_SIZE - EXT4_MIN_BLOCK_LOG_SIZE)) {
- ext4_msg(sb, KERN_ERR,
- "Invalid log cluster size: %u",
- le32_to_cpu(es->s_log_cluster_size));
- goto failed_mount;
- }
sbi->s_cluster_bits = le32_to_cpu(es->s_log_cluster_size) -
le32_to_cpu(es->s_log_block_size);
sbi->s_clusters_per_group =
@@ -3880,10 +3918,10 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
}
} else {
if (clustersize != blocksize) {
- ext4_warning(sb, "fragment/cluster size (%d) != "
- "block size (%d)", clustersize,
- blocksize);
- clustersize = blocksize;
+ ext4_msg(sb, KERN_ERR,
+ "fragment/cluster size (%d) != "
+ "block size (%d)", clustersize, blocksize);
+ goto failed_mount;
}
if (sbi->s_blocks_per_group > blocksize * 8) {
ext4_msg(sb, KERN_ERR,
@@ -3937,6 +3975,13 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
ext4_blocks_count(es));
goto failed_mount;
}
+ if ((es->s_first_data_block == 0) && (es->s_log_block_size == 0) &&
+ (sbi->s_cluster_ratio == 1)) {
+ ext4_msg(sb, KERN_WARNING, "bad geometry: first data "
+ "block is 0 with a 1k block and cluster size");
+ goto failed_mount;
+ }
+
blocks_count = (ext4_blocks_count(es) -
le32_to_cpu(es->s_first_data_block) +
EXT4_BLOCKS_PER_GROUP(sb) - 1);
@@ -3972,6 +4017,14 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
ret = -ENOMEM;
goto failed_mount;
}
+ if (((u64)sbi->s_groups_count * sbi->s_inodes_per_group) !=
+ le32_to_cpu(es->s_inodes_count)) {
+ ext4_msg(sb, KERN_ERR, "inodes count not valid: %u vs %llu",
+ le32_to_cpu(es->s_inodes_count),
+ ((u64)sbi->s_groups_count * sbi->s_inodes_per_group));
+ ret = -EINVAL;
+ goto failed_mount;
+ }
bgl_lock_init(sbi->s_blockgroup_lock);
@@ -4700,6 +4753,14 @@ static int ext4_commit_super(struct super_block *sb, int sync)
if (!sbh || block_device_ejected(sb))
return error;
+
+ /*
+ * The superblock bh should be mapped, but it might not be if the
+ * device was hot-removed. Not much we can do but fail the I/O.
+ */
+ if (!buffer_mapped(sbh))
+ return error;
+
/*
* If the file system is mounted read-only, don't update the
* superblock write time. This avoids updating the superblock
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index ed1cf24a7831..c7c8c16ccd93 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -229,12 +229,12 @@ __ext4_xattr_check_block(struct inode *inode, struct buffer_head *bh,
{
int error = -EFSCORRUPTED;
- if (buffer_verified(bh))
- return 0;
-
if (BHDR(bh)->h_magic != cpu_to_le32(EXT4_XATTR_MAGIC) ||
BHDR(bh)->h_blocks != cpu_to_le32(1))
goto errout;
+ if (buffer_verified(bh))
+ return 0;
+
error = -EFSBADCRC;
if (!ext4_xattr_block_csum_verify(inode, bh))
goto errout;
@@ -1559,7 +1559,7 @@ static int ext4_xattr_set_entry(struct ext4_xattr_info *i,
handle_t *handle, struct inode *inode,
bool is_block)
{
- struct ext4_xattr_entry *last;
+ struct ext4_xattr_entry *last, *next;
struct ext4_xattr_entry *here = s->here;
size_t min_offs = s->end - s->base, name_len = strlen(i->name);
int in_inode = i->in_inode;
@@ -1594,7 +1594,13 @@ static int ext4_xattr_set_entry(struct ext4_xattr_info *i,
/* Compute min_offs and last. */
last = s->first;
- for (; !IS_LAST_ENTRY(last); last = EXT4_XATTR_NEXT(last)) {
+ for (; !IS_LAST_ENTRY(last); last = next) {
+ next = EXT4_XATTR_NEXT(last);
+ if ((void *)next >= s->end) {
+ EXT4_ERROR_INODE(inode, "corrupted xattr entries");
+ ret = -EFSCORRUPTED;
+ goto out;
+ }
if (!last->e_value_inum && last->e_value_size) {
size_t offs = le16_to_cpu(last->e_value_offs);
if (offs < min_offs)
@@ -2205,23 +2211,8 @@ int ext4_xattr_ibody_inline_set(handle_t *handle, struct inode *inode,
if (EXT4_I(inode)->i_extra_isize == 0)
return -ENOSPC;
error = ext4_xattr_set_entry(i, s, handle, inode, false /* is_block */);
- if (error) {
- if (error == -ENOSPC &&
- ext4_has_inline_data(inode)) {
- error = ext4_try_to_evict_inline_data(handle, inode,
- EXT4_XATTR_LEN(strlen(i->name) +
- EXT4_XATTR_SIZE(i->value_len)));
- if (error)
- return error;
- error = ext4_xattr_ibody_find(inode, i, is);
- if (error)
- return error;
- error = ext4_xattr_set_entry(i, s, handle, inode,
- false /* is_block */);
- }
- if (error)
- return error;
- }
+ if (error)
+ return error;
header = IHDR(inode, ext4_raw_inode(&is->iloc));
if (!IS_LAST_ENTRY(s->first)) {
header->h_magic = cpu_to_le32(EXT4_XATTR_MAGIC);
@@ -2650,6 +2641,11 @@ static int ext4_xattr_make_inode_space(handle_t *handle, struct inode *inode,
last = IFIRST(header);
/* Find the entry best suited to be pushed into EA block */
for (; !IS_LAST_ENTRY(last); last = EXT4_XATTR_NEXT(last)) {
+ /* never move system.data out of the inode */
+ if ((last->e_name_len == 4) &&
+ (last->e_name_index == EXT4_XATTR_INDEX_SYSTEM) &&
+ !memcmp(last->e_name, "data", 4))
+ continue;
total_size = EXT4_XATTR_LEN(last->e_name_len);
if (!last->e_value_inum)
total_size += EXT4_XATTR_SIZE(
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 29c5f799890c..72c6a9e9a9b4 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -2694,11 +2694,16 @@ static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
inode_lock(inode);
ret = generic_write_checks(iocb, from);
if (ret > 0) {
+ bool preallocated = false;
+ size_t target_size = 0;
int err;
if (iov_iter_fault_in_readable(from, iov_iter_count(from)))
set_inode_flag(inode, FI_NO_PREALLOC);
+ preallocated = true;
+ target_size = iocb->ki_pos + iov_iter_count(from);
+
err = f2fs_preallocate_blocks(iocb, from);
if (err) {
clear_inode_flag(inode, FI_NO_PREALLOC);
@@ -2710,6 +2715,10 @@ static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
blk_finish_plug(&plug);
clear_inode_flag(inode, FI_NO_PREALLOC);
+ /* if we couldn't write data, we should deallocate blocks. */
+ if (preallocated && i_size_read(inode) < target_size)
+ f2fs_truncate(inode);
+
if (ret > 0)
f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret);
}
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
index 07793e25c976..e42736c1fdc8 100644
--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -1366,6 +1366,13 @@ int jbd2_journal_dirty_metadata(handle_t *handle, struct buffer_head *bh)
if (jh->b_transaction == transaction &&
jh->b_jlist != BJ_Metadata) {
jbd_lock_bh_state(bh);
+ if (jh->b_transaction == transaction &&
+ jh->b_jlist != BJ_Metadata)
+ pr_err("JBD2: assertion failure: h_type=%u "
+ "h_line_no=%u block_no=%llu jlist=%u\n",
+ handle->h_type, handle->h_line_no,
+ (unsigned long long) bh->b_blocknr,
+ jh->b_jlist);
J_ASSERT_JH(jh, jh->b_transaction != transaction ||
jh->b_jlist == BJ_Metadata);
jbd_unlock_bh_state(bh);
@@ -1385,11 +1392,11 @@ int jbd2_journal_dirty_metadata(handle_t *handle, struct buffer_head *bh)
* of the transaction. This needs to be done
* once a transaction -bzzz
*/
- jh->b_modified = 1;
if (handle->h_buffer_credits <= 0) {
ret = -ENOSPC;
goto out_unlock_bh;
}
+ jh->b_modified = 1;
handle->h_buffer_credits--;
}
diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
index 5aa392eae1c3..f6ed92524a03 100644
--- a/fs/userfaultfd.c
+++ b/fs/userfaultfd.c
@@ -220,24 +220,26 @@ static inline bool userfaultfd_huge_must_wait(struct userfaultfd_ctx *ctx,
unsigned long reason)
{
struct mm_struct *mm = ctx->mm;
- pte_t *pte;
+ pte_t *ptep, pte;
bool ret = true;
VM_BUG_ON(!rwsem_is_locked(&mm->mmap_sem));
- pte = huge_pte_offset(mm, address, vma_mmu_pagesize(vma));
- if (!pte)
+ ptep = huge_pte_offset(mm, address, vma_mmu_pagesize(vma));
+
+ if (!ptep)
goto out;
ret = false;
+ pte = huge_ptep_get(ptep);
/*
* Lockless access: we're in a wait_event so it's ok if it
* changes under us.
*/
- if (huge_pte_none(*pte))
+ if (huge_pte_none(pte))
ret = true;
- if (!huge_pte_write(*pte) && (reason & VM_UFFD_WP))
+ if (!huge_pte_write(pte) && (reason & VM_UFFD_WP))
ret = true;
out:
return ret;
diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index aa75389be8cf..79a9a0def7db 100644
--- a/fs/xfs/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
@@ -1101,7 +1101,8 @@ xfs_ioctl_setattr_dax_invalidate(
if (fa->fsx_xflags & FS_XFLAG_DAX) {
if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)))
return -EINVAL;
- if (bdev_dax_supported(sb, sb->s_blocksize) < 0)
+ if (!bdev_dax_supported(xfs_find_bdev_for_inode(VFS_I(ip)),
+ sb->s_blocksize))
return -EINVAL;
}
diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
index f24e5b6cfc86..1daa965f1e08 100644
--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -1184,6 +1184,30 @@ static const struct inode_operations xfs_inline_symlink_inode_operations = {
.update_time = xfs_vn_update_time,
};
+/* Figure out if this file actually supports DAX. */
+static bool
+xfs_inode_supports_dax(
+ struct xfs_inode *ip)
+{
+ struct xfs_mount *mp = ip->i_mount;
+
+ /* Only supported on non-reflinked files. */
+ if (!S_ISREG(VFS_I(ip)->i_mode) || xfs_is_reflink_inode(ip))
+ return false;
+
+ /* DAX mount option or DAX iflag must be set. */
+ if (!(mp->m_flags & XFS_MOUNT_DAX) &&
+ !(ip->i_d.di_flags2 & XFS_DIFLAG2_DAX))
+ return false;
+
+ /* Block size must match page size */
+ if (mp->m_sb.sb_blocksize != PAGE_SIZE)
+ return false;
+
+ /* Device has to support DAX too. */
+ return xfs_find_daxdev_for_inode(VFS_I(ip)) != NULL;
+}
+
STATIC void
xfs_diflags_to_iflags(
struct inode *inode,
@@ -1202,11 +1226,7 @@ xfs_diflags_to_iflags(
inode->i_flags |= S_SYNC;
if (flags & XFS_DIFLAG_NOATIME)
inode->i_flags |= S_NOATIME;
- if (S_ISREG(inode->i_mode) &&
- ip->i_mount->m_sb.sb_blocksize == PAGE_SIZE &&
- !xfs_is_reflink_inode(ip) &&
- (ip->i_mount->m_flags & XFS_MOUNT_DAX ||
- ip->i_d.di_flags2 & XFS_DIFLAG2_DAX))
+ if (xfs_inode_supports_dax(ip))
inode->i_flags |= S_DAX;
}
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index f663022353c0..0b0282d2f011 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -1640,11 +1640,17 @@ xfs_fs_fill_super(
sb->s_flags |= SB_I_VERSION;
if (mp->m_flags & XFS_MOUNT_DAX) {
+ bool rtdev_is_dax = false, datadev_is_dax;
+
xfs_warn(mp,
"DAX enabled. Warning: EXPERIMENTAL, use at your own risk");
- error = bdev_dax_supported(sb, sb->s_blocksize);
- if (error) {
+ datadev_is_dax = bdev_dax_supported(mp->m_ddev_targp->bt_bdev,
+ sb->s_blocksize);
+ if (mp->m_rtdev_targp)
+ rtdev_is_dax = bdev_dax_supported(
+ mp->m_rtdev_targp->bt_bdev, sb->s_blocksize);
+ if (!rtdev_is_dax && !datadev_is_dax) {
xfs_alert(mp,
"DAX unsupported by block device. Turning off DAX.");
mp->m_flags &= ~XFS_MOUNT_DAX;
diff --git a/include/linux/dax.h b/include/linux/dax.h
index 895e16fcc62d..07d6bc1f90a3 100644
--- a/include/linux/dax.h
+++ b/include/linux/dax.h
@@ -40,10 +40,10 @@ static inline void put_dax(struct dax_device *dax_dev)
int bdev_dax_pgoff(struct block_device *, sector_t, size_t, pgoff_t *pgoff);
#if IS_ENABLED(CONFIG_FS_DAX)
-int __bdev_dax_supported(struct super_block *sb, int blocksize);
-static inline int bdev_dax_supported(struct super_block *sb, int blocksize)
+bool __bdev_dax_supported(struct block_device *bdev, int blocksize);
+static inline bool bdev_dax_supported(struct block_device *bdev, int blocksize)
{
- return __bdev_dax_supported(sb, blocksize);
+ return __bdev_dax_supported(bdev, blocksize);
}
static inline struct dax_device *fs_dax_get_by_host(const char *host)
@@ -58,9 +58,10 @@ static inline void fs_put_dax(struct dax_device *dax_dev)
struct dax_device *fs_dax_get_by_bdev(struct block_device *bdev);
#else
-static inline int bdev_dax_supported(struct super_block *sb, int blocksize)
+static inline bool bdev_dax_supported(struct block_device *bdev,
+ int blocksize)
{
- return -EOPNOTSUPP;
+ return false;
}
static inline struct dax_device *fs_dax_get_by_host(const char *host)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index f23215854c80..a26cf767407e 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2549,6 +2549,7 @@ enum mf_action_page_type {
MF_MSG_POISONED_HUGE,
MF_MSG_HUGE,
MF_MSG_FREE_HUGE,
+ MF_MSG_NON_PMD_HUGE,
MF_MSG_UNMAP_FAILED,
MF_MSG_DIRTY_SWAPCACHE,
MF_MSG_CLEAN_SWAPCACHE,
diff --git a/include/trace/events/sched.h b/include/trace/events/sched.h
index da10aa21bebc..d447f24df970 100644
--- a/include/trace/events/sched.h
+++ b/include/trace/events/sched.h
@@ -435,7 +435,9 @@ TRACE_EVENT(sched_pi_setprio,
memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
__entry->pid = tsk->pid;
__entry->oldprio = tsk->prio;
- __entry->newprio = pi_task ? pi_task->prio : tsk->prio;
+ __entry->newprio = pi_task ?
+ min(tsk->normal_prio, pi_task->prio) :
+ tsk->normal_prio;
/* XXX SCHED_DEADLINE bits missing */
),
diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index 82afb7ed369f..e97bbae947f0 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -27,7 +27,7 @@ static struct lock_class_key irq_desc_lock_class;
#if defined(CONFIG_SMP)
static int __init irq_affinity_setup(char *str)
{
- zalloc_cpumask_var(&irq_default_affinity, GFP_NOWAIT);
+ alloc_bootmem_cpumask_var(&irq_default_affinity);
cpulist_parse(str, irq_default_affinity);
/*
* Set at least the boot cpu. We don't want to end up with
@@ -40,10 +40,8 @@ __setup("irqaffinity=", irq_affinity_setup);
static void __init init_irq_default_affinity(void)
{
-#ifdef CONFIG_CPUMASK_OFFSTACK
- if (!irq_default_affinity)
+ if (!cpumask_available(irq_default_affinity))
zalloc_cpumask_var(&irq_default_affinity, GFP_NOWAIT);
-#endif
if (cpumask_empty(irq_default_affinity))
cpumask_setall(irq_default_affinity);
}
diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c
index 23c0b0cb5fb9..169b3c44ee97 100644
--- a/kernel/trace/trace_functions_graph.c
+++ b/kernel/trace/trace_functions_graph.c
@@ -831,6 +831,7 @@ print_graph_entry_leaf(struct trace_iterator *iter,
struct ftrace_graph_ret *graph_ret;
struct ftrace_graph_ent *call;
unsigned long long duration;
+ int cpu = iter->cpu;
int i;
graph_ret = &ret_entry->ret;
@@ -839,7 +840,6 @@ print_graph_entry_leaf(struct trace_iterator *iter,
if (data) {
struct fgraph_cpu_data *cpu_data;
- int cpu = iter->cpu;
cpu_data = per_cpu_ptr(data->cpu_data, cpu);
@@ -869,6 +869,9 @@ print_graph_entry_leaf(struct trace_iterator *iter,
trace_seq_printf(s, "%ps();\n", (void *)call->func);
+ print_graph_irq(iter, graph_ret->func, TRACE_GRAPH_RET,
+ cpu, iter->ent->pid, flags);
+
return trace_handle_return(s);
}
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index b1f841a9edd4..dfd2947e046e 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2159,6 +2159,7 @@ static void __init gather_bootmem_prealloc(void)
*/
if (hstate_is_gigantic(h))
adjust_managed_page_count(page, 1 << h->order);
+ cond_resched();
}
}
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 1cd3b3569af8..345e69d88b37 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -508,6 +508,7 @@ static const char * const action_page_types[] = {
[MF_MSG_POISONED_HUGE] = "huge page already hardware poisoned",
[MF_MSG_HUGE] = "huge page",
[MF_MSG_FREE_HUGE] = "free huge page",
+ [MF_MSG_NON_PMD_HUGE] = "non-pmd-sized huge page",
[MF_MSG_UNMAP_FAILED] = "unmapping failed page",
[MF_MSG_DIRTY_SWAPCACHE] = "dirty swapcache page",
[MF_MSG_CLEAN_SWAPCACHE] = "clean swapcache page",
@@ -1090,6 +1091,21 @@ static int memory_failure_hugetlb(unsigned long pfn, int trapno, int flags)
return 0;
}
+ /*
+ * TODO: hwpoison for pud-sized hugetlb doesn't work right now, so
+ * simply disable it. In order to make it work properly, we need
+ * make sure that:
+ * - conversion of a pud that maps an error hugetlb into hwpoison
+ * entry properly works, and
+ * - other mm code walking over page table is aware of pud-aligned
+ * hwpoison entries.
+ */
+ if (huge_page_size(page_hstate(head)) > PMD_SIZE) {
+ action_result(pfn, MF_MSG_NON_PMD_HUGE, MF_IGNORED);
+ res = -EBUSY;
+ goto out;
+ }
+
if (!hwpoison_user_mappings(p, pfn, trapno, flags, &head)) {
action_result(pfn, MF_MSG_UNMAP_FAILED, MF_IGNORED);
res = -EBUSY;
diff --git a/mm/vmstat.c b/mm/vmstat.c
index e085b13c572e..4bb13e72ac97 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -1770,11 +1770,9 @@ static void vmstat_update(struct work_struct *w)
* to occur in the future. Keep on running the
* update worker thread.
*/
- preempt_disable();
queue_delayed_work_on(smp_processor_id(), mm_percpu_wq,
this_cpu_ptr(&vmstat_work),
round_jiffies_relative(sysctl_stat_interval));
- preempt_enable();
}
}
diff --git a/net/netfilter/nf_log.c b/net/netfilter/nf_log.c
index 8bb152a7cca4..276324abfa60 100644
--- a/net/netfilter/nf_log.c
+++ b/net/netfilter/nf_log.c
@@ -458,14 +458,17 @@ static int nf_log_proc_dostring(struct ctl_table *table, int write,
rcu_assign_pointer(net->nf.nf_loggers[tindex], logger);
mutex_unlock(&nf_log_mutex);
} else {
+ struct ctl_table tmp = *table;
+
+ tmp.data = buf;
mutex_lock(&nf_log_mutex);
logger = nft_log_dereference(net->nf.nf_loggers[tindex]);
if (!logger)
- table->data = "NONE";
+ strlcpy(buf, "NONE", sizeof(buf));
else
- table->data = logger->name;
- r = proc_dostring(table, write, buffer, lenp, ppos);
+ strlcpy(buf, logger->name, sizeof(buf));
mutex_unlock(&nf_log_mutex);
+ r = proc_dostring(&tmp, write, buffer, lenp, ppos);
}
return r;
diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index 97769465de13..fcbbecf92395 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -8,6 +8,7 @@ squote := '
empty :=
space := $(empty) $(empty)
space_escape := _-_SPACE_-_
+pound := \#
###
# Name of target with a '.' as filename prefix. foo/bar.o => foo/.bar.o
@@ -251,11 +252,11 @@ endif
# Replace >$< with >$$< to preserve $ when reloading the .cmd file
# (needed for make)
-# Replace >#< with >\#< to avoid starting a comment in the .cmd file
+# Replace >#< with >$(pound)< to avoid starting a comment in the .cmd file
# (needed for make)
# Replace >'< with >'\''< to be able to enclose the whole string in '...'
# (needed for the shell)
-make-cmd = $(call escsq,$(subst \#,\\\#,$(subst $$,$$$$,$(cmd_$(1)))))
+make-cmd = $(call escsq,$(subst $(pound),$$(pound),$(subst $$,$$$$,$(cmd_$(1)))))
# Find any prerequisites that is newer than target or that does not exist.
# PHONY targets skipped in both cases.
diff --git a/tools/build/Build.include b/tools/build/Build.include
index 418871d02ebf..a4bbb984941d 100644
--- a/tools/build/Build.include
+++ b/tools/build/Build.include
@@ -12,6 +12,7 @@
# Convenient variables
comma := ,
squote := '
+pound := \#
###
# Name of target with a '.' as filename prefix. foo/bar.o => foo/.bar.o
@@ -43,11 +44,11 @@ echo-cmd = $(if $($(quiet)cmd_$(1)),\
###
# Replace >$< with >$$< to preserve $ when reloading the .cmd file
# (needed for make)
-# Replace >#< with >\#< to avoid starting a comment in the .cmd file
+# Replace >#< with >$(pound)< to avoid starting a comment in the .cmd file
# (needed for make)
# Replace >'< with >'\''< to be able to enclose the whole string in '...'
# (needed for the shell)
-make-cmd = $(call escsq,$(subst \#,\\\#,$(subst $$,$$$$,$(cmd_$(1)))))
+make-cmd = $(call escsq,$(subst $(pound),$$(pound),$(subst $$,$$$$,$(cmd_$(1)))))
###
# Find any prerequisites that is newer than target or that does not exist.
diff --git a/tools/objtool/Makefile b/tools/objtool/Makefile
index e6acc281dd37..8ae824dbfca3 100644
--- a/tools/objtool/Makefile
+++ b/tools/objtool/Makefile
@@ -35,7 +35,7 @@ CFLAGS += -Wall -Werror $(WARNINGS) -fomit-frame-pointer -O2 -g $(INCLUDES)
LDFLAGS += -lelf $(LIBSUBCMD)
# Allow old libelf to be used:
-elfshdr := $(shell echo '\#include <libelf.h>' | $(CC) $(CFLAGS) -x c -E - | grep elf_getshdr)
+elfshdr := $(shell echo '$(pound)include <libelf.h>' | $(CC) $(CFLAGS) -x c -E - | grep elf_getshdr)
CFLAGS += $(if $(elfshdr),,-DLIBELF_USE_DEPRECATED)
AWK = awk
diff --git a/tools/scripts/Makefile.include b/tools/scripts/Makefile.include
index 654efd9768fd..5f3f1f44ed0a 100644
--- a/tools/scripts/Makefile.include
+++ b/tools/scripts/Makefile.include
@@ -101,3 +101,5 @@ ifneq ($(silent),1)
QUIET_INSTALL = @printf ' INSTALL %s\n' $1;
endif
endif
+
+pound := \#