Jonathan Brassow ebfd32bba9 dm log: userspace fix overhead_size calcuations ... This patch fixes two bugs that revolve around the miscalculation and misuse of the variable 'overhead_size'. 'overhead_size' is the size of the various header structures used during communication. The first bug is the use of 'sizeof' with the pointer of a structure instead of the structure itself - resulting in the wrong size being computed. This is then used in a check to see if the payload (data_size) would be to large for the preallocated structure. Since the bug produces a smaller value for the overhead, it was possible for the structure to be breached. (Although the current users of the code do not currently send enough data to trigger this bug.) The second bug is that the 'overhead_size' value is used to compute how much of the preallocated space should be cleared before populating it with fresh data. This should have simply been 'sizeof(struct cn_msg)' not overhead_size. The fact that 'overhead_size' was computed incorrectly made this problem "less bad" - leaving only a pointer's worth of space at the end uncleared. Thus, this bug was never producing a bad result, but still needs to be fixed - especially now that the value is computed correctly. Cc: stable@kernel.org Signed-off-by: Jonathan Brassow <jbrassow@redhat.com Signed-off-by: Alasdair G Kergon <agk@redhat.com>		2010-02-16 18:42:53 +00:00
..
raid6test	md: drivers/md/unroll.pl replaced with awk analog	2009-10-16 16:25:19 +11:00
.gitignore	gitignore: misc files	2006-01-01 22:21:50 +01:00
bitmap.c	md/bitmap: update dirty flag when bitmap bits are explicitly set.	2009-12-14 12:51:41 +11:00
bitmap.h	md: Support write-intent bitmaps with externally managed metadata.	2009-12-14 12:51:41 +11:00
dm-bio-record.h	dm: preserve bi_io_vec when resubmitting bios	2009-04-02 19:55:23 +01:00
dm-crypt.c	dm crypt: add plain64 iv	2009-12-10 23:52:25 +00:00
dm-delay.c	dm table: pass correct dev area size to device_area_is_valid	2009-07-23 20:30:42 +01:00
dm-exception-store.c	dm snapshot: move cow ref from exception store to snap core	2009-12-10 23:52:12 +00:00
dm-exception-store.h	dm snapshot: add merging	2009-12-10 23:52:32 +00:00
dm-io.c	dm io: handle empty barriers	2009-12-10 23:52:22 +00:00
dm-ioctl.c	dm: rename dm_suspended to dm_suspended_md	2009-12-10 23:52:26 +00:00
dm-kcopyd.c	dm kcopyd: accept zero size jobs	2009-12-10 23:52:13 +00:00
dm-linear.c	dm table: pass correct dev area size to device_area_is_valid	2009-07-23 20:30:42 +01:00
dm-log-userspace-base.c	dm log: userspace fix incorrect luid cast in userspace_ctr	2009-10-16 23:18:15 +01:00
dm-log-userspace-transfer.c	dm log: userspace fix overhead_size calcuations	2010-02-16 18:42:53 +00:00
dm-log-userspace-transfer.h	dm log: userspace add luid to distinguish between concurrent log instances	2009-09-04 20:40:34 +01:00
dm-log.c	dm raid1: report flush errors separately in status	2009-12-10 23:52:02 +00:00
dm-mpath.c	dm mpath: reject messages when device is suspended	2009-12-10 23:52:27 +00:00
dm-mpath.h	dm mpath: remove is_active from struct dm_path	2008-10-10 13:36:58 +01:00
dm-path-selector.c	dm: path selector use module refcount directly	2009-04-02 19:55:27 +01:00
dm-path-selector.h	dm mpath: add start_io and nr_bytes to path selectors	2009-06-22 10:12:27 +01:00
dm-queue-length.c	dm mpath: add queue length load balancer	2009-06-22 10:12:27 +01:00
dm-raid1.c	dm raid1: explicitly initialise bio_lists	2009-12-10 23:52:06 +00:00
dm-region-hash.c	dm raid1: remove bio_endio from dm_rh_mark_nosync	2009-12-10 23:52:05 +00:00
dm-round-robin.c	dm mpath: add start_io and nr_bytes to path selectors	2009-06-22 10:12:27 +01:00
dm-service-time.c	dm mpath: add service time load balancer	2009-06-22 10:12:28 +01:00
dm-snap-persistent.c	dm snapshot: persistent annotate work_queue as on stack	2010-02-16 18:42:51 +00:00
dm-snap-transient.c	dm snapshot: move cow ref from exception store to snap core	2009-12-10 23:52:12 +00:00
dm-snap.c	dm snapshot: use merge origin if snapshot invalid	2009-12-10 23:52:36 +00:00
dm-stripe.c	dm stripe: avoid divide by zero with invalid stripe count	2010-02-16 18:42:47 +00:00
dm-sysfs.c	dm: rename dm_suspended to dm_suspended_md	2009-12-10 23:52:26 +00:00
dm-table.c	DM: Fix device mapper topology stacking	2010-01-11 14:29:20 +01:00
dm-target.c	dm target: remove struct tt_internal	2009-04-02 19:55:28 +01:00
dm-uevent.c	dm: avoid _hash_lock deadlock	2009-12-10 23:51:52 +00:00
dm-uevent.h	dm: uevent generate events	2007-10-20 02:01:26 +01:00
dm-zero.c	dm: consolidate target deregistration error handling	2009-01-06 03:04:58 +00:00
dm.c	dm: export suspended state to targets	2009-12-10 23:52:27 +00:00
dm.h	dm: rename dm_suspended to dm_suspended_md	2009-12-10 23:52:26 +00:00
faulty.c	md: add MODULE_DESCRIPTION for all md related modules.	2009-12-14 12:51:41 +11:00
Kconfig	md: revise Kconfig help for MD_MULTIPATH	2009-12-14 12:51:41 +11:00
linear.c	md: add MODULE_DESCRIPTION for all md related modules.	2009-12-14 12:51:41 +11:00
linear.h	md/linear: use call_rcu to free obsolete 'conf' structures.	2009-06-18 08:49:42 +10:00
Makefile	md: drivers/md/unroll.pl replaced with awk analog	2009-10-16 16:25:19 +11:00
md.c	md: fix some lockdep issues between md and sysfs.	2010-02-10 11:26:09 +11:00
md.h	raid: improve MD/raid10 handling of correctable read errors.	2009-12-14 12:51:41 +11:00
mktables.c	md/raid6: move raid6 data processing to raid6_pq.ko	2009-03-31 15:09:39 +11:00
multipath.c	md: add MODULE_DESCRIPTION for all md related modules.	2009-12-14 12:51:41 +11:00
multipath.h	md: remove mddev_to_conf "helper" macro	2009-06-16 16:54:21 +10:00
raid0.c	md: add MODULE_DESCRIPTION for all md related modules.	2009-12-14 12:51:41 +11:00
raid0.h	md: remove mddev_to_conf "helper" macro	2009-06-16 16:54:21 +10:00
raid1.c	md: add MODULE_DESCRIPTION for all md related modules.	2009-12-14 12:51:41 +11:00
raid1.h	md/raid1: add takeover support for raid5->raid1	2009-12-14 12:51:41 +11:00
raid5.c	md: fix some lockdep issues between md and sysfs.	2010-02-10 11:26:09 +11:00
raid5.h	md: fix problems with RAID6 calculations for DDF.	2009-10-16 16:27:34 +11:00
raid6algos.c	md: add MODULE_DESCRIPTION for all md related modules.	2009-12-14 12:51:41 +11:00
raid6altivec.uc	md: drivers/md/unroll.pl replaced with awk analog	2009-10-16 16:25:19 +11:00
raid6int.uc	md: drivers/md/unroll.pl replaced with awk analog	2009-10-16 16:25:19 +11:00
raid6mmx.c	md/raid6: move raid6 data processing to raid6_pq.ko	2009-03-31 15:09:39 +11:00
raid6recov.c	md/raid6: move raid6 data processing to raid6_pq.ko	2009-03-31 15:09:39 +11:00
raid6sse1.c	md/raid6: move raid6 data processing to raid6_pq.ko	2009-03-31 15:09:39 +11:00
raid6sse2.c	md/raid6: move raid6 data processing to raid6_pq.ko	2009-03-31 15:09:39 +11:00
raid6x86.h	md: fix typo in FSF address	2009-03-31 14:57:37 +11:00
raid10.c	md: add MODULE_DESCRIPTION for all md related modules.	2009-12-14 12:51:41 +11:00
raid10.h	md: remove mddev_to_conf "helper" macro	2009-06-16 16:54:21 +10:00
unroll.awk	md: drivers/md/unroll.pl replaced with awk analog	2009-10-16 16:25:19 +11:00