linux_dsm_epyc7002/drivers/md
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
dm-bufio.c
dm-builtin.c
dm-cache-background-tracker.c
dm-cache-background-tracker.h
dm-cache-block-types.h
dm-cache-metadata.c
dm-cache-metadata.h
dm-cache-policy-internal.h
dm-cache-policy-smq.c
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-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-dust.c dm dust: add limited write failure mode 2019-11-05 15:25:34 -05:00
dm-era-target.c
dm-exception-store.c
dm-exception-store.h
dm-flakey.c block: rework zone reporting 2019-11-12 19:12:07 -07:00
dm-init.c
dm-integrity.c dm integrity: fix excessive alignment of metadata runs 2019-11-15 14:49:16 -05:00
dm-io.c
dm-ioctl.c
dm-kcopyd.c
dm-linear.c block: rework zone reporting 2019-11-12 19:12:07 -07:00
dm-log-userspace-base.c
dm-log-userspace-transfer.c
dm-log-userspace-transfer.h
dm-log-writes.c
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-raid1.c
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
dm-round-robin.c
dm-rq.c
dm-rq.h
dm-service-time.c
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-stats.c
dm-stats.h
dm-stripe.c dm stripe: use struct_size() in kmalloc() 2019-11-05 14:09:59 -05:00
dm-switch.c
dm-sysfs.c
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-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
dm-uevent.h
dm-unstripe.c
dm-verity-fec.c
dm-verity-fec.h
dm-verity-target.c
dm-verity-verify-sig.c
dm-verity-verify-sig.h
dm-verity.h
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
Kconfig dm: Fix Kconfig indentation 2019-11-20 10:35:31 -05:00
Makefile
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-cluster.c
md-cluster.h
md-faulty.c
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
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.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
raid1-10.c
raid1.c md: raid1: check rdev before reference in raid1_sync_request func 2019-12-11 10:36:13 -08:00
raid1.h
raid5-cache.c
raid5-log.h
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
raid10.c md/raid10: prevent access of uninitialized resync_pages offset 2019-11-11 16:47:39 -08:00
raid10.h