Heinz Mauelshagen
e893fba90c
dm cache: fix access beyond end of origin device ...
In order to avoid wasting cache space a partial block at the end of the
origin device is not cached. Unfortunately, the check for such a
partial block at the end of the origin device was flawed.
Fix accesses beyond the end of the origin device that occured due to
attempted promotion of an undetected partial block by:
- initializing the per bio data struct to allow cache_end_io to work properly
- recognizing access to the partial block at the end of the origin device
- avoiding out of bounds access to the discard bitset
Otherwise, users can experience errors like the following:
attempt to access beyond end of device
dm-5: rw=0, want=20971520, limit=20971456
...
device-mapper: cache: promotion failed; couldn't copy block
Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Acked-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org
2014-03-12 13:52:00 -04:00
Merge branch 'bcache-for-3.14' of git://evilpiepirate.org/~kent/linux-bcache into for-linus
2014-01-30 12:57:55 -07:00
dm space map metadata: fix refcount decrement below 0 which caused corruption
2014-03-07 12:02:47 -05:00
kernfs: s/sysfs_dirent/kernfs_node/ and rename its friends accordingly
2013-12-11 15:28:36 -08:00
kernfs: s/sysfs_dirent/kernfs_node/ and rename its friends accordingly
2013-12-11 15:28:36 -08:00
dm: Refactor for new bio cloning/splitting
2013-11-23 22:33:55 -08:00
Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block
2014-01-30 11:19:05 -08:00
dm snapshot: use dm-bufio prefetch
2014-01-14 23:23:03 -05:00
dm sysfs: fix a module unload race
2014-01-14 23:23:04 -05:00
dm cache metadata: check the metadata version when reading the superblock
2013-11-11 11:37:49 -05:00
dm cache: add passthrough mode
2013-11-11 11:37:49 -05:00
dm cache: add remove_cblock method to policy interface
2013-11-11 11:37:50 -05:00
dm cache mq: fix memory allocation failure for large cache devices
2014-02-28 12:18:29 -05:00
dm cache: add policy name to status output
2014-01-16 13:44:11 -05:00
dm cache: add policy name to status output
2014-01-16 13:44:11 -05:00
dm cache: fix access beyond end of origin device
2014-03-12 13:52:00 -04:00
block: Convert drivers to immutable biovecs
2013-11-23 22:33:51 -08:00
Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block
2014-01-30 11:19:05 -08:00
block: Abstract out bvec iterator
2013-11-23 22:33:47 -08:00
dm io: fix I/O to multiple destinations
2014-02-17 11:00:05 -05:00
dm: allow remove to be deferred
2013-11-09 18:20:22 -05:00
dm: stop using WQ_NON_REENTRANT
2013-08-23 09:02:13 -04:00
block: Abstract out bvec iterator
2013-11-23 22:33:47 -08:00
dm log userspace: allow mark requests to piggyback on flush requests
2014-01-21 23:46:27 -05:00
dm mpath: fix stalls when handling invalid ioctls
2014-02-26 09:44:44 -05:00
dm raid1: fix immutable biovec related BUG when retrying read bio
2014-02-18 10:48:57 -05:00
block: Abstract out bvec iterator
2013-11-23 22:33:47 -08:00
dm snapshot: fix metadata corruption
2014-03-03 17:58:13 -05:00
Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block
2014-01-30 11:19:05 -08:00
dm stats: initialize read-only module parameter
2013-12-10 19:13:21 -05:00
dm: add statistics support
2013-09-05 20:46:06 -04:00
block: Abstract out bvec iterator
2013-11-23 22:33:47 -08:00
block: Abstract out bvec iterator
2013-11-23 22:33:47 -08:00
dm sysfs: fix a module unload race
2014-01-14 23:23:04 -05:00
dm table: remove unused buggy code that extends the targets array
2014-01-07 10:11:44 -05:00
dm: allow error target to replace bio-based and request-based targets
2013-09-05 20:46:05 -04:00
dm thin: ensure user takes action to validate data and metadata consistency
2014-03-05 15:25:35 -05:00
dm thin: ensure user takes action to validate data and metadata consistency
2014-03-05 15:25:35 -05:00
dm thin: fix noflush suspend IO queueing
2014-03-05 15:26:59 -05:00
block: Generic bio chaining
2013-11-23 22:33:56 -08:00
Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block
2014-01-30 11:19:05 -08:00
dm sysfs: fix a module unload race
2014-01-14 23:23:04 -05:00
block: Abstract out bvec iterator
2013-11-23 22:33:47 -08:00
dm: fix Kconfig indentation
2014-03-03 17:31:07 -05:00
block: Introduce new bio_split()
2013-11-23 22:33:57 -08:00
dm sysfs: fix a module unload race
2014-01-14 23:23:04 -05:00
Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block
2014-01-30 11:19:05 -08:00
Driver core / sysfs patches for 3.14-rc1
2014-01-20 15:49:44 -08:00
block: Abstract out bvec iterator
2013-11-23 22:33:47 -08:00
block: Introduce new bio_split()
2013-11-23 22:33:57 -08:00
md/raid1: restore ability for check and repair to fix read errors.
2014-02-05 12:26:04 +11:00
raid1: Rewrite the implementation of iobarrier.
2013-11-19 15:19:18 +11:00
md/raid5: Fix CPU hotplug callback registration
2014-02-13 13:46:45 +11:00
md update for 3.13.
2013-11-20 13:05:25 -08:00
Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block
2014-01-30 11:19:05 -08:00
e893fba90c