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linux-stable/drivers/md
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Mikulas Patocka 0c7a7d8e62 block: fix an integer overflow in logical block size 
commit ad6bf88a6c upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-23 08:20:30 +01:00
..
bcache bcache: at least try to shrink 1 node in bch_mca_scan() 2020-01-04 13:59:45 +01:00
persistent-data dm btree: increase rebalance threshold in __rebalance2() 2019-12-21 10:47:51 +01:00
bitmap.c md: free unused memory after bitmap resize 2017-12-17 15:08:00 +01:00
bitmap.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dm-bio-prison-v1.c dm: Use kzalloc for all structs with embedded biosets/mempools 2019-11-06 12:42:52 +01:00
dm-bio-prison-v1.h block: switch bios to blk_status_t 2017-06-09 09:27:32 -06:00
dm-bio-prison-v2.c dm: Use kzalloc for all structs with embedded biosets/mempools 2019-11-06 12:42:52 +01:00
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 Revert "dm bufio: fix deadlock with loop device" 2019-08-29 08:26:42 +02:00
dm-bufio.h dm integrity: optimize writing dm-bufio buffers that are partially changed 2017-08-28 11:47:17 -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: handle kmalloc failure allocating background_tracker struct 2017-05-17 09:44:53 -04:00
dm-cache-background-tracker.h
dm-cache-block-types.h
dm-cache-metadata.c dm cache metadata: Fix loading discard bitset 2019-05-25 18:25:32 +02:00
dm-cache-metadata.h
dm-cache-policy-internal.h
dm-cache-policy-smq.c dm cache policy smq: don't do any writebacks unless IDLE 2017-05-14 21:54:33 -04:00
dm-cache-policy.c
dm-cache-policy.h
dm-cache-target.c dm cache: destroy migration_cache if cache target registration failed 2018-10-18 09:16:24 +02:00
dm-core.h dm: allocate struct mapped_device with kvzalloc 2017-11-30 08:40:43 +00:00
dm-crypt.c dm: disable CRYPTO_TFM_REQ_MAY_SLEEP to fix a GFP_KERNEL recursion deadlock 2019-04-20 09:15:08 +02:00
dm-delay.c dm delay: fix a crash when invalid device is specified 2019-05-25 18:25:33 +02:00
dm-era-target.c block: replace bi_bdev with a gendisk pointer and partitions index 2017-08-23 12:49:55 -06:00
dm-exception-store.c
dm-exception-store.h
dm-flakey.c dm flakey: Properly corrupt multi-page bios. 2019-12-05 15:37:32 +01:00
dm-integrity.c dm integrity: change memcmp to strncmp in dm_integrity_ctr 2019-05-02 09:40:32 +02:00
dm-io.c dm: Use kzalloc for all structs with embedded biosets/mempools 2019-11-06 12:42:52 +01:00
dm-ioctl.c dm ioctl: harden copy_params()'s copy_from_user() from malicious users 2018-11-13 11:15:10 -08:00
dm-kcopyd.c dm: Use kzalloc for all structs with embedded biosets/mempools 2019-11-06 12:42:52 +01:00
dm-linear.c dm linear: fix linear_end_io conditional definition 2018-10-18 09:16:24 +02:00
dm-log-userspace-base.c
dm-log-userspace-transfer.c
dm-log-userspace-transfer.h
dm-log-writes.c dm log writes: make sure super sector log updates are written in order 2019-07-03 13:16:00 +02:00
dm-log.c
dm-mpath.c dm mpath: return DM_MAPIO_REQUEUE on blk-mq rq allocation failure 2018-04-26 11:02:07 +02:00
dm-mpath.h
dm-path-selector.c
dm-path-selector.h
dm-queue-length.c
dm-raid.c dm raid: avoid bitmap with raid4/5/6 journal device 2019-12-01 09:13:42 +01:00
dm-raid1.c block: replace bi_bdev with a gendisk pointer and partitions index 2017-08-23 12:49:55 -06:00
dm-region-hash.c dm: Use kzalloc for all structs with embedded biosets/mempools 2019-11-06 12:42:52 +01:00
dm-round-robin.c
dm-rq.c dm rq: do not update rq partially in each ending bio 2017-08-28 10:23:28 -04:00
dm-rq.h dm rq: do not update rq partially in each ending bio 2017-08-28 10:23:28 -04:00
dm-service-time.c
dm-snap-persistent.c block: fix an integer overflow in logical block size 2020-01-23 08:20:30 +01:00
dm-snap-transient.c
dm-snap.c dm: Use kzalloc for all structs with embedded biosets/mempools 2019-11-06 12:42:52 +01:00
dm-stats.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
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 - Some request-based DM core and DM multipath fixes and cleanups 2017-09-14 13:43:16 -07:00
dm-switch.c - Some request-based DM core and DM multipath fixes and cleanups 2017-09-14 13:43:16 -07:00
dm-sysfs.c
dm-table.c dm table: fix invalid memory accesses with too high sector number 2019-08-29 08:26:44 +02:00
dm-target.c dm: don't return errnos from ->map 2017-06-09 09:27:32 -06:00
dm-thin-metadata.c dm thin: fix passdown_double_checking_shared_status() 2019-01-31 08:13:45 +01:00
dm-thin-metadata.h dm thin: fix passdown_double_checking_shared_status() 2019-01-31 08:13:45 +01:00
dm-thin.c dm: Use kzalloc for all structs with embedded biosets/mempools 2019-11-06 12:42:52 +01:00
dm-uevent.c
dm-uevent.h
dm-verity-fec.c dm verity fec: fix GFP flags used with mempool_alloc() 2017-07-26 15:55:44 -04:00
dm-verity-fec.h
dm-verity-target.c dm verity: use message limit for data block corruption message 2019-07-21 09:04:40 +02:00
dm-verity.h dm verity: switch to using asynchronous hash crypto API 2017-04-24 15:37:04 -04:00
dm-zero.c dm: don't return errnos from ->map 2017-06-09 09:27:32 -06:00
dm-zoned-metadata.c dm zoned: reduce overhead of backing device checks 2019-12-17 20:39:25 +01:00
dm-zoned-reclaim.c dm zoned: reduce overhead of backing device checks 2019-12-17 20:39:25 +01:00
dm-zoned-target.c dm zoned: reduce overhead of backing device checks 2019-12-17 20:39:25 +01:00
dm-zoned.h dm zoned: reduce overhead of backing device checks 2019-12-17 20:39:25 +01:00
dm.c dm: fix report zone remapping to account for partition offset 2018-10-18 09:16:24 +02:00
dm.h dm: introduce enum dm_queue_mode to cleanup related code 2017-04-27 17:08:44 -04:00
faulty.c block: replace bi_bdev with a gendisk pointer and partitions index 2017-08-23 12:49:55 -06:00
Kconfig dm zoned: drive-managed zoned block device target 2017-06-19 11:05:20 -04:00
linear.c block: replace bi_bdev with a gendisk pointer and partitions index 2017-08-23 12:49:55 -06:00
linear.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
md-cluster.c md-cluster: clear another node's suspend_area after the copy is finished 2018-10-03 17:00:47 -07:00
md-cluster.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
md.c md: allow metadata updates while suspending an array - fix 2019-11-24 08:23:03 +01:00
md.h md: don't report active array_state until after revalidate_disk() completes. 2019-10-05 12:48:10 +02:00
multipath.c block: replace bi_bdev with a gendisk pointer and partitions index 2017-08-23 12:49:55 -06:00
multipath.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
raid0.c block: fix an integer overflow in logical block size 2020-01-23 08:20:30 +01:00
raid0.h md/raid0: avoid RAID0 data corruption due to layout confusion. 2019-10-05 12:48:13 +02:00
raid1-10.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
raid1.c md: raid1: check rdev before reference in raid1_sync_request func 2020-01-09 10:17:52 +01:00
raid1.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
raid5-cache.c md/raid5: fix 'out of memory' during raid cache recovery 2019-02-06 17:31:37 +01:00
raid5-log.h md/raid5-cache: disable reshape completely 2018-10-10 08:54:20 +02:00
raid5-ppl.c raid5-ppl: check recovery_offset when performing ppl recovery 2017-12-20 10:10:36 +01:00
raid5.c raid5: need to set STRIPE_HANDLE for batch head 2019-12-17 20:40:03 +01:00
raid5.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
raid10.c md/raid10: prevent access of uninitialized resync_pages offset 2019-12-01 09:14:17 +01:00
raid10.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00