Ming Lei 5b616a05de block: partition: initialize percpuref before sending out KOBJ_ADD ...

commit b30a337ca27c4f40439e4bfb290cba5f88d73bb7 upstream.

The initialization of partition's percpu_ref should have been done before
sending out KOBJ_ADD uevent, which may cause userspace to read partition
table. So the uninitialized percpu_ref may be accessed in data path.

This patch fixes this issue reported by Naveen.

Reported-by: Naveen Kaje <nkaje@codeaurora.org>
Tested-by: Naveen Kaje <nkaje@codeaurora.org>
Fixes: 6c71013ecb7e2(block: partition: convert percpu ref)
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2016-05-04 14:48:39 -07:00

..

partitions

mac: validate mac_partition is within sector

2015-11-20 08:49:28 -07:00

bio-integrity.c

block: blk_flush_integrity() for bio-based drivers

2015-10-21 14:43:44 -06:00

bio.c

bio: return EINTR if copying to user space got interrupted

2016-03-03 15:07:28 -08:00

blk-cgroup.c

cgroup: fix handling of multi-destination migration from subtree_control enabling

2015-12-03 10:18:21 -05:00

blk-core.c

dm: fix excessive dm-mq context switching

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

blk-exec.c

block: move PM request support to IDE

2015-05-05 13:40:42 -06:00

blk-flush.c

Revert "blk-flush: Queue through IO scheduler when flush not required"

2015-11-25 10:12:54 -07:00

blk-integrity.c

block, libnvdimm, nvme: provide a built-in blk_integrity nop profile

2015-10-21 14:43:45 -06:00

blk-ioc.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

blk-iopoll.c

Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next

2014-06-03 12:57:53 -07:00

blk-lib.c

block: re-add discard_granularity and alignment checks

2015-10-28 09:12:58 +09:00

blk-map.c

block: Copy a user iovec if it includes gaps

2015-09-11 09:03:50 -06:00

blk-merge.c

block: fix bio splitting on max sectors

2016-02-17 12:30:56 -08:00

blk-mq-cpu.c

blk-mq: add file comments and update copyright notices

2014-05-28 10:15:41 -06:00

blk-mq-cpumap.c

blk-mq: avoid inserting requests before establishing new mapping

2015-09-29 11:32:50 -06:00

blk-mq-sysfs.c

block: add block polling support

2015-11-07 10:40:47 -07:00

blk-mq-tag.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

blk-mq-tag.h

blk-mq: factor out a helper to iterate all tags for a request_queue

2015-10-01 10:10:57 +02:00

blk-mq.c

blk-mq: fix calling unplug callbacks with preempt disabled

2015-11-20 20:29:45 -07:00

blk-mq.h

blk-mq: mark __blk_mq_complete_request() static

2015-11-11 09:36:56 -07:00

blk-settings.c

block: Initialize max_dev_sectors to 0

2016-03-09 15:34:49 -08:00

blk-softirq.c

block: fix regression with block enabled tagging

2014-04-09 21:54:06 -06:00

blk-sysfs.c

Merge branch 'mkp-fixes' into fixes

2015-12-03 09:32:33 -08:00

blk-tag.c

block: support different tag allocation policy

2015-01-23 14:15:46 -07:00

blk-throttle.c

cgroup: replace cgroup_on_dfl() tests in controllers with cgroup_subsys_on_dfl()

2015-09-18 11:56:28 -04:00

blk-timeout.c

block: fix blk_abort_request for blk-mq drivers

2015-11-24 15:24:10 -07:00

blk.h

block: protect rw_page against device teardown

2015-11-19 13:47:10 -08:00

bounce.c

Merge branch 'for-linus' of git://git.kernel.dk/linux-block

2015-09-19 18:57:09 -07:00

bsg-lib.c

bsg: Remove unused function bsg_goose_queue()

2012-12-06 14:33:02 +01:00

bsg.c

block: Simplify bsg complete all

2015-02-04 09:57:52 -07:00

cfq-iosched.c

cgroup: replace cgroup_on_dfl() tests in controllers with cgroup_subsys_on_dfl()

2015-09-18 11:56:28 -04:00

cmdline-parser.c

block: remove unrelated header files and export symbol

2014-01-21 20:18:26 -08:00

compat_ioctl.c

block, bdi: an active gendisk always has a request_queue associated with it

2014-09-08 10:00:35 -06:00

deadline-iosched.c

block: Stop abusing csd.list for fifo_time

2014-02-24 14:46:32 -08:00

elevator.c

block: check bio_mergeable() early before merging

2015-10-21 15:00:54 -06:00

genhd.c

block: Inline blk_integrity in struct gendisk

2015-10-21 14:42:42 -06:00

ioctl.c

block: add an API for Persistent Reservations

2015-10-21 14:46:56 -06:00

ioprio.c

pidns: fix set/getpriority and ioprio_set/get in PRIO_USER mode

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

Kconfig

block: Add T10 Protection Information functions

2014-09-27 09:14:59 -06:00

Kconfig.iosched

blkcg: make CONFIG_BLK_CGROUP bool

2012-03-06 21:27:21 +01:00

Makefile

block: Add T10 Protection Information functions

2014-09-27 09:14:59 -06:00

noop-iosched.c

elevator: use list_{first,prev,next}_entry

2015-11-16 15:21:48 -07:00

partition-generic.c

block: partition: initialize percpuref before sending out KOBJ_ADD

2016-05-04 14:48:39 -07:00

scsi_ioctl.c

mm, page_alloc: rename __GFP_WAIT to __GFP_RECLAIM

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

t10-pi.c

block: Consolidate static integrity profile properties

2015-10-21 14:42:38 -06:00