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block-5.5-2020-01-16

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Merge tag 'block-5.5-2020-01-16' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "Three fixes that should go into this release:

   - The 32-bit segment size fix that I mentioned last week (Ming)

   - Use uint for the block size (Mikulas)

   - A null_blk zone write handling fix (Damien)"

* tag 'block-5.5-2020-01-16' of git://git.kernel.dk/linux-block:
  block: fix an integer overflow in logical block size
  null_blk: Fix zone write handling
  block: fix get_max_segment_size() overflow on 32bit arch
This commit is contained in:
Linus Torvalds 2020-01-17 05:54:18 -08:00
commit 5ffdff81cf
6 changed files with 17 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
block/blk-merge.c
View File

@ -164,8 +164,13 @@ static inline unsigned get_max_segment_size(const struct request_queue *q,
unsigned long mask = queue_segment_boundary(q);
offset = mask & (page_to_phys(start_page) + offset);
return min_t(unsigned long, mask - offset + 1,
queue_max_segment_size(q));
/*
* overflow may be triggered in case of zero page physical address
* on 32bit arch, use queue's max segment size when that happens.
*/
return min_not_zero(mask - offset + 1,
(unsigned long)queue_max_segment_size(q));
}
/**

2
block/blk-settings.c
View File

@ -328,7 +328,7 @@ EXPORT_SYMBOL(blk_queue_max_segment_size);
* storage device can address. The default of 512 covers most
* hardware.
**/
void blk_queue_logical_block_size(struct request_queue *q, unsigned short size)
void blk_queue_logical_block_size(struct request_queue *q, unsigned int size)
{
q->limits.logical_block_size = size;

4
drivers/block/null_blk_zoned.c
View File

@ -129,11 +129,13 @@ static blk_status_t null_zone_write(struct nullb_cmd *cmd, sector_t sector,
return BLK_STS_IOERR;
case BLK_ZONE_COND_EMPTY:
case BLK_ZONE_COND_IMP_OPEN:
case BLK_ZONE_COND_EXP_OPEN:
case BLK_ZONE_COND_CLOSED:
/* Writes must be at the write pointer position */
if (sector != zone->wp)
return BLK_STS_IOERR;
if (zone->cond == BLK_ZONE_COND_EMPTY)
if (zone->cond != BLK_ZONE_COND_EXP_OPEN)
zone->cond = BLK_ZONE_COND_IMP_OPEN;
zone->wp += nr_sectors;

2
drivers/md/dm-snap-persistent.c
View File

@ -17,7 +17,7 @@
#include <linux/dm-bufio.h>
#define DM_MSG_PREFIX "persistent snapshot"
#define DM_CHUNK_SIZE_DEFAULT_SECTORS 32 /* 16KB */
#define DM_CHUNK_SIZE_DEFAULT_SECTORS 32U /* 16KB */
#define DM_PREFETCH_CHUNKS 12

2
drivers/md/raid0.c
View File

@ -87,7 +87,7 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf)
char b[BDEVNAME_SIZE];
char b2[BDEVNAME_SIZE];
struct r0conf *conf = kzalloc(sizeof(*conf), GFP_KERNEL);
unsigned short blksize = 512;
unsigned blksize = 512;
*private_conf = ERR_PTR(-ENOMEM);
if (!conf)

8
include/linux/blkdev.h
View File

@ -328,6 +328,7 @@ struct queue_limits {
unsigned int max_sectors;
unsigned int max_segment_size;
unsigned int physical_block_size;
unsigned int logical_block_size;
unsigned int alignment_offset;
unsigned int io_min;
unsigned int io_opt;
@ -338,7 +339,6 @@ struct queue_limits {
unsigned int discard_granularity;
unsigned int discard_alignment;
unsigned short logical_block_size;
unsigned short max_segments;
unsigned short max_integrity_segments;
unsigned short max_discard_segments;
@ -1077,7 +1077,7 @@ extern void blk_queue_max_write_same_sectors(struct request_queue *q,
unsigned int max_write_same_sectors);
extern void blk_queue_max_write_zeroes_sectors(struct request_queue *q,
unsigned int max_write_same_sectors);
extern void blk_queue_logical_block_size(struct request_queue *, unsigned short);
extern void blk_queue_logical_block_size(struct request_queue *, unsigned int);
extern void blk_queue_physical_block_size(struct request_queue *, unsigned int);
extern void blk_queue_alignment_offset(struct request_queue *q,
unsigned int alignment);
@ -1291,7 +1291,7 @@ static inline unsigned int queue_max_segment_size(const struct request_queue *q)
return q->limits.max_segment_size;
}
static inline unsigned short queue_logical_block_size(const struct request_queue *q)
static inline unsigned queue_logical_block_size(const struct request_queue *q)
{
int retval = 512;
@ -1301,7 +1301,7 @@ static inline unsigned short queue_logical_block_size(const struct request_queue
return retval;
}
static inline unsigned short bdev_logical_block_size(struct block_device *bdev)
static inline unsigned int bdev_logical_block_size(struct block_device *bdev)
{
return queue_logical_block_size(bdev_get_queue(bdev));
}