Ming Lei 2775a60447 md: multipath: don't hardcopy bio in .make_request path ...

commit fafcde3ac1a418688a734365203a12483b83907a upstream.

Inside multipath_make_request(), multipath maps the incoming
bio into low level device's bio, but it is totally wrong to
copy the bio into mapped bio via '*mapped_bio = *bio'. For
example, .__bi_remaining is kept in the copy, especially if
the incoming bio is chained to via bio splitting, so .bi_end_io
can't be called for the mapped bio at all in the completing path
in this kind of situation.

This patch fixes the issue by using clone style.

Reported-and-tested-by: Andrea Righi <righi.andrea@gmail.com>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2016-04-12 09:08:57 -07:00

..

bcache

bcache: fix cache_set_flush() NULL pointer dereference on OOM

2016-04-12 09:08:53 -07:00

persistent-data

dm space map metadata: remove unused variable in brb_pop()

2016-03-03 15:07:14 -08:00

bitmap.c

…

bitmap.h

…

dm-bio-prison.c

…

dm-bio-prison.h

…

dm-bio-record.h

…

dm-bufio.c

…

dm-bufio.h

…

dm-builtin.c

…

dm-cache-block-types.h

…

dm-cache-metadata.c

dm cache: make sure every metadata function checks fail_io

2016-04-12 09:08:40 -07:00

dm-cache-metadata.h

dm cache: make sure every metadata function checks fail_io

2016-04-12 09:08:40 -07:00

dm-cache-policy-cleaner.c

Merge tag 'dm-4.4-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

2015-11-04 21:19:53 -08:00

dm-cache-policy-internal.h

…

dm-cache-policy-mq.c

…

dm-cache-policy-smq.c

…

dm-cache-policy.c

…

dm-cache-policy.h

…

dm-cache-target.c

dm cache: make sure every metadata function checks fail_io

2016-04-12 09:08:40 -07:00

dm-crypt.c

dm crypt: fix a possible hang due to race condition on exit

2015-11-19 13:38:30 -05:00

dm-delay.c

dm delay: document that offsets are specified in sectors

2015-10-31 19:06:05 -04:00

dm-era-target.c

…

dm-exception-store.c

Merge tag 'dm-4.4-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

2015-11-04 21:19:53 -08:00

dm-exception-store.h

dm snapshot: fix hung bios when copy error occurs

2016-03-03 15:07:14 -08:00

dm-flakey.c

…

dm-io.c

…

dm-ioctl.c

…

dm-kcopyd.c

mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd

2015-11-06 17:50:42 -08:00

dm-linear.c

…

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: fix infinite recursion in ioctl when no paths and !queue_if_no_path

2015-11-17 14:19:00 -05:00

dm-mpath.h

…

dm-path-selector.c

…

dm-path-selector.h

…

dm-queue-length.c

…

dm-raid1.c

…

dm-raid.c

…

dm-region-hash.c

…

dm-round-robin.c

…

dm-service-time.c

…

dm-snap-persistent.c

dm snapshot: fix hung bios when copy error occurs

2016-03-03 15:07:14 -08:00

dm-snap-transient.c

dm snapshot: fix hung bios when copy error occurs

2016-03-03 15:07:14 -08:00

dm-snap.c

dm snapshot: disallow the COW and origin devices from being identical

2016-04-12 09:08:39 -07:00

dm-stats.c

…

dm-stats.h

…

dm-stripe.c

…

dm-switch.c

dm switch: simplify conditional in alloc_region_table()

2015-10-31 19:06:06 -04:00

dm-sysfs.c

…

dm-table.c

dm snapshot: disallow the COW and origin devices from being identical

2016-04-12 09:08:39 -07:00

dm-target.c

…

dm-thin-metadata.c

dm thin metadata: don't issue prefetches if a transaction abort has failed

2016-04-12 09:08:40 -07:00

dm-thin-metadata.h

…

dm-thin.c

dm thin: fix race condition when destroying thin pool workqueue

2016-03-03 15:07:10 -08:00

dm-uevent.c

…

dm-uevent.h

…

dm-verity.c

…

dm-zero.c

…

dm.c

dm: fix rq_end_stats() NULL pointer in dm_requeue_original_request()

2016-04-12 09:08:40 -07:00

dm.h

…

faulty.c

…

Kconfig

raid5-cache: add crc32c Kconfig dependency

2015-11-09 09:09:52 +11:00

linear.c

…

linear.h

…

Makefile

…

md-cluster.c

…

md-cluster.h

…

md.c

md/raid: only permit hot-add of compatible integrity profiles

2016-02-17 12:30:57 -08:00

md.h

md/raid: only permit hot-add of compatible integrity profiles

2016-02-17 12:30:57 -08:00

multipath.c

md: multipath: don't hardcopy bio in .make_request path

2016-04-12 09:08:57 -07:00

multipath.h

…

raid0.c

…

raid0.h

…

raid1.c

raid1: include bio_end_io_list in nr_queued to prevent freeze_array hang

2016-04-12 09:08:56 -07:00

raid1.h

…

raid5-cache.c

raid5-cache: start raid5 readonly if journal is missing

2015-11-01 13:48:29 +11:00

raid5.c

md/raid5: preserve STRIPE_PREREAD_ACTIVE in break_stripe_batch_list

2016-04-12 09:08:57 -07:00

raid5.h

RAID5: revert e9e4c377e2 to fix a livelock

2016-04-12 09:08:57 -07:00

raid10.c

raid10: include bio_end_io_list in nr_queued to prevent freeze_array hang

2016-04-12 09:08:57 -07:00

raid10.h

…