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Mikulas Patocka ad6bf88a6c block: fix an integer overflow in logical block size 
Logical block size has type unsigned short. That means that it can be at
most 32768. However, there are architectures that can run with 64k pages
(for example arm64) and on these architectures, it may be possible to
create block devices with 64k block size.

For exmaple (run this on an architecture with 64k pages):

Mount will fail with this error because it tries to read the superblock using 2-sector
access:
  device-mapper: writecache: I/O is not aligned, sector 2, size 1024, block size 65536
  EXT4-fs (dm-0): unable to read superblock

This patch changes the logical block size from unsigned short to unsigned
int to avoid the overflow.

Cc: stable@vger.kernel.org
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-01-15 21:43:09 -07:00
..
bcache
Revert "bcache: fix fifo index swapping condition in journal_pin_cmp()"
2019-11-18 08:35:47 -07:00
persistent-data
dm btree: increase rebalance threshold in __rebalance2()
2019-12-05 15:27:52 -05:00
dm-bio-prison-v1.c
dm bio prison: replace spin_lock_irqsave with spin_lock_irq
2019-11-05 14:53:03 -05:00
dm-bio-prison-v1.h
…
dm-bio-prison-v2.c
dm bio prison: replace spin_lock_irqsave with spin_lock_irq
2019-11-05 14:53:03 -05:00
dm-bio-prison-v2.h
…
dm-bio-record.h
block: replace bi_bdev with a gendisk pointer and partitions index
2017-08-23 12:49:55 -06:00
dm-bufio.c
dm bufio: introduce a global cache replacement
2019-09-13 17:00:21 -04:00
dm-builtin.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
dm-cache-background-tracker.c
dm cache background tracker: fix sparse warning
2018-04-30 15:40:40 -04:00
dm-cache-background-tracker.h
…
dm-cache-block-types.h
…
dm-cache-metadata.c
dm cache metadata: Fix loading discard bitset
2019-04-18 16:18:25 -04:00
dm-cache-metadata.h
…
dm-cache-policy-internal.h
…
dm-cache-policy-smq.c
dm: remove unnecessary unlikely() around WARN_ON_ONCE()
2018-10-16 14:34:59 -04:00
dm-cache-policy.c
…
dm-cache-policy.h
…
dm-cache-target.c
dm cache: replace spin_lock_irqsave with spin_lock_irq
2019-11-05 14:53:04 -05:00
dm-clone-metadata.c
dm clone metadata: Use a two phase commit
2019-12-05 15:27:54 -05:00
dm-clone-metadata.h
dm clone metadata: Use a two phase commit
2019-12-05 15:27:54 -05:00
dm-clone-target.c
dm clone: Flush destination device before committing metadata
2019-12-05 17:05:23 -05:00
dm-core.h
dm: disable DISCARD if the underlying storage no longer supports it
2019-04-04 15:33:59 -04:00
dm-crypt.c
Revert "dm crypt: use WQ_HIGHPRI for the IO and crypt workqueues"
2019-11-20 17:27:39 -05:00
dm-delay.c
dm delay: fix a crash when invalid device is specified
2019-04-26 11:29:32 -04:00
dm-dust.c
dm dust: add limited write failure mode
2019-11-05 15:25:34 -05:00
dm-era-target.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
dm-exception-store.c
…
dm-exception-store.h
- Improve DM snapshot target's scalability by using finer grained
2019-05-16 15:55:48 -07:00
dm-flakey.c
block: rework zone reporting
2019-11-12 19:12:07 -07:00
dm-init.c
docs: device-mapper: move it to the admin-guide
2019-07-15 11:03:01 -03:00
dm-integrity.c
dm integrity: fix excessive alignment of metadata runs
2019-11-15 14:49:16 -05:00
dm-io.c
dm: Use kzalloc for all structs with embedded biosets/mempools
2018-06-05 08:47:43 -06:00
dm-ioctl.c
dm: introduce DM_GET_TARGET_VERSION
2019-09-16 10:18:01 -04:00
dm-kcopyd.c
dm kcopyd: always complete failed jobs
2019-08-15 15:57:39 -04:00
dm-linear.c
block: rework zone reporting
2019-11-12 19:12:07 -07:00
dm-log-userspace-base.c
dm: convert to bioset_init()/mempool_init()
2018-05-30 15:33:32 -06:00
dm-log-userspace-transfer.c
…
dm-log-userspace-transfer.h
…
dm-log-writes.c
dm log writes: fix incorrect comment about the logged sequence example
2019-07-09 14:13:33 -04:00
dm-log.c
…
dm-mpath.c
dm mpath: remove harmful bio-based optimization
2019-11-26 10:22:46 -05:00
dm-mpath.h
…
dm-path-selector.c
…
dm-path-selector.h
…
dm-queue-length.c
dm mpath selector: more evenly distribute ties
2018-01-29 13:44:58 -05:00
dm-raid1.c
dm raid1: use struct_size() with kzalloc()
2019-08-26 11:05:32 -04:00
dm-raid.c
dm raid: Remove unnecessary negation of a shift in raid10_format_to_md_layout
2019-11-07 11:59:38 -05:00
dm-region-hash.c
- Error path bug fix for overflow tests (Dan)
2018-06-12 18:28:00 -07:00
dm-round-robin.c
…
dm-rq.c
block: Delay default elevator initialization
2019-09-05 19:52:34 -06:00
dm-rq.h
dm: remove unused _rq_tio_cache and _rq_cache
2019-03-05 14:48:50 -05:00
dm-service-time.c
dm mpath selector: more evenly distribute ties
2018-01-29 13:44:58 -05:00
dm-snap-persistent.c
block: fix an integer overflow in logical block size
2020-01-15 21:43:09 -07:00
dm-snap-transient.c
…
dm-snap.c
dm snapshot: rework COW throttling to fix deadlock
2019-10-10 09:46:05 -04:00
dm-stats.c
dm stats: use struct_size() helper
2019-09-04 09:39:22 -04:00
dm-stats.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
dm-stripe.c
dm stripe: use struct_size() in kmalloc()
2019-11-05 14:09:59 -05:00
dm-switch.c
dm switch: use struct_size() in kzalloc()
2019-03-05 14:48:51 -05:00
dm-sysfs.c
dm: remove legacy request-based IO path
2018-10-11 11:36:09 -04:00
dm-table.c
block: don't handle bio based drivers in blk_revalidate_disk_zones
2019-12-03 08:51:25 -07:00
dm-target.c
dm mpath: fix missing call of path selector type->end_io
2019-04-25 15:38:52 -04:00
dm-thin-metadata.c
dm thin metadata: Add support for a pre-commit callback
2019-12-05 17:05:24 -05:00
dm-thin-metadata.h
dm thin metadata: Add support for a pre-commit callback
2019-12-05 17:05:24 -05:00
dm-thin.c
dm thin: Flush data device before committing metadata
2019-12-06 11:46:16 -05:00
dm-uevent.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
dm-uevent.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
dm-unstripe.c
dm: Check for device sector overflow if CONFIG_LBDAF is not set
2018-12-18 09:02:26 -05:00
dm-verity-fec.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
dm-verity-fec.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
dm-verity-target.c
dm verity: add root hash pkcs#7 signature verification
2019-08-23 10:13:14 -04:00
dm-verity-verify-sig.c
dm verity: add root hash pkcs#7 signature verification
2019-08-23 10:13:14 -04:00
dm-verity-verify-sig.h
dm verity: add root hash pkcs#7 signature verification
2019-08-23 10:13:14 -04:00
dm-verity.h
dm verity: add root hash pkcs#7 signature verification
2019-08-23 10:13:14 -04:00
dm-writecache.c
dm writecache: handle REQ_FUA
2019-11-05 14:21:40 -05:00
dm-zero.c
…
dm-zoned-metadata.c
- Fix DM core to disallow stacking request-based DM on partitions.
2019-11-25 11:53:26 -08:00
dm-zoned-reclaim.c
dm zoned: reduce overhead of backing device checks
2019-11-07 10:08:36 -05:00
dm-zoned-target.c
block: simplify blkdev_nr_zones
2019-12-03 08:51:24 -07:00
dm-zoned.h
dm zoned: reduce overhead of backing device checks
2019-11-07 10:08:36 -05:00
dm.c
block: rework zone reporting
2019-11-12 19:12:07 -07:00
dm.h
dm: make dm_table_find_target return NULL
2019-08-23 10:13:12 -04:00
Kconfig
dm: Fix Kconfig indentation
2019-11-20 10:35:31 -05:00
Makefile
dm: add clone target
2019-09-12 09:32:31 -04:00
md-bitmap.c
md/bitmap: avoid race window between md_bitmap_resize and bitmap_file_clear_bit
2019-10-24 15:22:40 -07:00
md-bitmap.h
md: Avoid namespace collision with bitmap API
2018-08-01 15:49:39 -07:00
md-cluster.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 45
2019-05-24 17:27:12 +02:00
md-cluster.h
md-cluster: introduce resync_info_get interface for sanity check
2018-10-18 09:36:35 -07:00
md-faulty.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 47
2019-05-24 17:27:13 +02:00
md-linear.c
md: improve handling of bio with REQ_PREFLUSH in md_flush_request()
2019-10-24 15:22:40 -07:00
md-linear.h
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md
2017-11-14 16:07:26 -08:00
md-multipath.c
md: improve handling of bio with REQ_PREFLUSH in md_flush_request()
2019-10-24 15:22:40 -07:00
md-multipath.h
md: convert to bioset_init()/mempool_init()
2018-05-30 15:33:32 -06:00
md.c
md: make sure desc_nr less than MD_SB_DISKS
2019-12-11 10:38:08 -08:00
md.h
md: improve handling of bio with REQ_PREFLUSH in md_flush_request()
2019-10-24 15:22:40 -07:00
raid0.c
block: fix an integer overflow in logical block size
2020-01-15 21:43:09 -07:00
raid0.h
md/raid0: avoid RAID0 data corruption due to layout confusion.
2019-09-13 13:10:05 -07:00
raid1-10.c
md: raid1-10: Unify r{1,10}bio_pool_free
2019-06-15 01:37:35 -06:00
raid1.c
md: raid1: check rdev before reference in raid1_sync_request func
2019-12-11 10:36:13 -08:00
raid1.h
md: convert to bioset_init()/mempool_init()
2018-05-30 15:33:32 -06:00
raid5-cache.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288
2019-06-05 17:36:37 +02:00
raid5-log.h
raid5: set write hint for PPL
2019-03-12 10:15:18 -07:00
raid5-ppl.c
treewide: Use sizeof_field() macro
2019-12-09 10:36:44 -08:00
raid5.c
raid5: need to set STRIPE_HANDLE for batch head
2019-12-11 10:12:09 -08:00
raid5.h
raid5: use bio_end_sector in r5_next_bio
2019-09-13 13:14:43 -07:00
raid10.c
md/raid10: prevent access of uninitialized resync_pages offset
2019-11-11 16:47:39 -08:00
raid10.h
md: convert to bioset_init()/mempool_init()
2018-05-30 15:33:32 -06:00