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linux-2.6/drivers/md
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Milan Broz 91e1062592 dm crypt: use bio_add_page 
Fix possible max_phys_segments violation in cloned dm-crypt bio.

In write operation dm-crypt needs to allocate new bio request
and run crypto operation on this clone. Cloned request has always
the same size, but number of physical segments can be increased
and violate max_phys_segments restriction.

This can lead to data corruption and serious hardware malfunction.
This was observed when using XFS over dm-crypt and at least
two HBA controller drivers (arcmsr, cciss) recently.

Fix it by using bio_add_page() call (which tests for other
restrictions too) instead of constructing own biovec.

All versions of dm-crypt are affected by this bug.

Cc: stable@kernel.org
Cc:  dm-crypt@saout.de
Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
 		2007-12-20 17:32:13 +00:00
..
raid6test [PATCH] RAID6 Altivec fix 2005-09-17 11:49:58 -07:00
.gitignore gitignore: misc files 2006-01-01 22:21:50 +01:00
Kconfig dm mpath: hp requires scsi 2007-12-20 17:32:09 +00:00
Makefile dm: add uevent to core 2007-10-20 02:01:24 +01:00
bitmap.c Add UNPLUG traces to all appropriate places 2007-11-09 13:41:32 +01:00
dm-bio-list.h dm: bio_list macro renaming 2007-10-20 02:01:11 +01:00
dm-bio-record.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
dm-crypt.c dm crypt: use bio_add_page 2007-12-20 17:32:13 +00:00
dm-delay.c dm: bio_list macro renaming 2007-10-20 02:01:11 +01:00
dm-emc.c dm mpath: emc fix an error message 2007-10-20 02:01:12 +01:00
dm-exception-store.c dm: fix memory leak in dm_create_persistent() when starting metadata update thread fails 2007-07-18 08:38:22 -07:00
dm-hw-handler.c dm: use kzalloc 2007-10-20 02:01:07 +01:00
dm-hw-handler.h dm mpath: add retry pg init 2007-10-20 02:01:18 +01:00
dm-io.c Drop 'size' argument from bio_endio and bi_end_io 2007-10-10 09:25:57 +02:00
dm-io.h dm io: remove old interface 2007-05-09 12:30:47 -07:00
dm-ioctl.c dm: trigger change uevent on rename 2007-12-20 17:32:11 +00:00
dm-linear.c [PATCH] dm: map and endio symbolic return codes 2006-12-08 08:29:09 -08:00
dm-log.c dm log: split suspend 2007-10-20 02:01:21 +01:00
dm-log.h dm log: split suspend 2007-10-20 02:01:21 +01:00
dm-mpath-hp-sw.c dm mpath: hp retry if not ready 2007-10-20 02:01:20 +01:00
dm-mpath-rdac.c dm mpath: rdac fix init race 2007-10-20 02:00:57 +01:00
dm-mpath.c dm mpath: send uevents 2007-10-20 02:01:27 +01:00
dm-mpath.h [PATCH] struct path: rename DM's struct path 2006-12-08 08:28:40 -08:00
dm-path-selector.c dm: use kzalloc 2007-10-20 02:01:07 +01:00
dm-path-selector.h [PATCH] struct path: rename DM's struct path 2006-12-08 08:28:40 -08:00
dm-raid1.c dm raid1: add mirror_set to struct mirror 2007-10-20 02:01:22 +01:00
dm-round-robin.c dm: remove duplicate module name from error msgs 2007-07-12 15:01:08 -07:00
dm-snap.c dm: use is_power_of_2 2007-10-20 02:01:06 +01:00
dm-snap.h dm: use kmem_cache macro 2007-07-12 15:01:08 -07:00
dm-stripe.c dm: use is_power_of_2 2007-10-20 02:01:06 +01:00
dm-table.c dm: merge max_hw_sector 2007-12-20 17:32:12 +00:00
dm-target.c dm: use kzalloc 2007-10-20 02:01:07 +01:00
dm-uevent.c dm: uevent generate events 2007-10-20 02:01:26 +01:00
dm-uevent.h dm: uevent generate events 2007-10-20 02:01:26 +01:00
dm-zero.c Drop 'size' argument from bio_endio and bi_end_io 2007-10-10 09:25:57 +02:00
dm.c dm: trigger change uevent on rename 2007-12-20 17:32:11 +00:00
dm.h dm: trigger change uevent on rename 2007-12-20 17:32:11 +00:00
faulty.c Drop 'size' argument from bio_endio and bi_end_io 2007-10-10 09:25:57 +02:00
kcopyd.c kcopyd use mutex instead of semaphore 2007-10-20 02:01:08 +01:00
kcopyd.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
linear.c Add UNPLUG traces to all appropriate places 2007-11-09 13:41:32 +01:00
md.c Add UNPLUG traces to all appropriate places 2007-11-09 13:41:32 +01:00
mktables.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
multipath.c Add UNPLUG traces to all appropriate places 2007-11-09 13:41:32 +01:00
raid0.c Add UNPLUG traces to all appropriate places 2007-11-09 13:41:32 +01:00
raid1.c Add UNPLUG traces to all appropriate places 2007-11-09 13:41:32 +01:00
raid5.c raid5: fix unending write sequence 2007-11-14 18:45:39 -08:00
raid6.h [PATCH] RAID6 Altivec fix 2005-09-17 11:49:58 -07:00
raid6algos.c x86 merge fallout: uml 2007-10-29 07:41:32 -07:00
raid6altivec.uc [PATCH] RAID6 Altivec fix 2005-09-17 11:49:58 -07:00
raid6int.uc Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
raid6mmx.c x86 merge fallout: uml 2007-10-29 07:41:32 -07:00
raid6recov.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
raid6sse1.c x86 merge fallout: uml 2007-10-29 07:41:32 -07:00
raid6sse2.c x86 merge fallout: uml 2007-10-29 07:41:32 -07:00
raid6x86.h x86 merge fallout: uml 2007-10-29 07:41:32 -07:00
raid10.c Add UNPLUG traces to all appropriate places 2007-11-09 13:41:32 +01:00
unroll.pl Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00