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Ming Lei bd0051a5cb block: fix use-after-free in disk_part_iter_next 
commit aebf5db917055b38f4945ed6d621d9f07a44ff30 upstream.

Make sure that bdgrab() is done on the 'block_device' instance before
referring to it for avoiding use-after-free.

Cc: <stable@vger.kernel.org>
Reported-by: syzbot+825f0f9657d4e528046e@syzkaller.appspotmail.com
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-01-17 14:05:38 +01:00
..
partitions
docs: admin-guide: add a series of orphaned documents
2019-07-15 11:03:02 -03:00
badblocks.c
block: switch all files cleared marked as GPLv2 to SPDX tags
2019-04-30 16:11:57 -06:00
bfq-cgroup.c
bfq: fix blkio cgroup leakage v4
2020-09-03 11:26:54 +02:00
bfq-iosched.c
block: only call sched requeue_request() for scheduled requests
2020-09-23 12:40:37 +02:00
bfq-iosched.h
bfq: fix blkio cgroup leakage v4
2020-09-03 11:26:54 +02:00
bfq-wf2q.c
bfq: fix blkio cgroup leakage v4
2020-09-03 11:26:54 +02:00
bio-integrity.c
block: release bip in a right way in error path
2020-07-16 08:16:36 +02:00
bio.c
block/diskstats: more accurate approximation of io_ticks for slow disks
2020-10-07 08:01:29 +02:00
blk-cgroup.c
blk-cgroup: Pre-allocate tree node on blkg_conf_prep
2020-11-10 12:37:30 +01:00
blk-core.c
block: ratelimit handle_bad_sector() message
2020-10-29 09:58:01 +01:00
blk-exec.c
block: add SPDX tags to block layer files missing licensing information
2019-04-30 16:12:03 -06:00
blk-flush.c
blk-mq: insert passthrough request into hctx->dispatch directly
2020-03-21 08:11:52 +01:00
blk-integrity.c
block: centralize PI remapping logic to the block layer
2019-09-17 20:03:49 -06:00
blk-ioc.c
block: Fix use-after-free issue accessing struct io_cq
2020-04-17 10:50:04 +02:00
blk-iocost.c
blk-iocost: ioc_pd_free() shouldn't assume irq disabled
2020-09-09 19:12:35 +02:00
blk-iolatency.c
blkcg: s/RQ_QOS_CGROUP/RQ_QOS_LATENCY/
2019-08-28 21:17:08 -06:00
blk-lib.c
block: fix 32 bit overflow in __blkdev_issue_discard()
2018-11-14 08:17:18 -07:00
blk-map.c
block: fix memleak when __blk_rq_map_user_iov() is failed
2020-01-12 12:21:43 +01:00
blk-merge.c
block: fix get_max_io_size()
2020-09-03 11:27:01 +02:00
blk-mq-cpumap.c
blk-mq: balance mapping between present CPUs and queues
2019-08-04 21:43:12 -06:00
blk-mq-debugfs-zoned.c
block: Cleanup license notice
2019-01-17 21:21:40 -07:00
blk-mq-debugfs.c
blk-mq-debugfs: update blk_queue_flag_name[] accordingly for new flags
2020-07-22 09:32:52 +02:00
blk-mq-debugfs.h
blk-mq: no need to check return value of debugfs_create functions
2019-06-13 03:00:30 -06:00
blk-mq-pci.c
block: Fix blk_mq_*_map_queues() kernel-doc headers
2019-05-31 15:12:34 -06:00
blk-mq-rdma.c
block: Fix blk_mq_*_map_queues() kernel-doc headers
2019-05-31 15:12:34 -06:00
blk-mq-sched.c
blk-mq: order adding requests to hctx->dispatch and checking SCHED_RESTART
2020-09-03 11:27:01 +02:00
blk-mq-sched.h
block: only call sched requeue_request() for scheduled requests
2020-09-23 12:40:37 +02:00
blk-mq-sysfs.c
blk-mq: move cancel of hctx->run_work to the front of blk_exit_queue
2020-10-29 09:57:34 +01:00
blk-mq-tag.c
blk-mq: introduce blk_mq_tagset_wait_completed_request()
2019-08-04 21:41:29 -06:00
blk-mq-tag.h
Merge branch 'for-4.15/block' of git://git.kernel.dk/linux-block
2017-11-14 15:32:19 -08:00
blk-mq-virtio.c
block: Fix blk_mq_*_map_queues() kernel-doc headers
2019-05-31 15:12:34 -06:00
blk-mq.c
blk-mq: In blk_mq_dispatch_rq_list() "no budget" is a reason to kick
2020-12-30 11:50:54 +01:00
blk-mq.h
blk-mq: insert passthrough request into hctx->dispatch directly
2020-03-21 08:11:52 +01:00
blk-pm.c
scsi: block: Fix a race in the runtime power management code
2021-01-06 14:48:37 +01:00
blk-pm.h
block: remove the queue_lock indirection
2018-11-15 12:17:28 -07:00
blk-rq-qos.c
blk-wbt: fix performance regression in wbt scale_up/scale_down
2019-10-06 09:26:41 -06:00
blk-rq-qos.h
blk-rq-qos: fix first node deletion of rq_qos_del()
2019-10-15 10:13:13 -06:00
blk-settings.c
block: keep bdi->io_pages in sync with max_sectors_kb for stacked devices
2020-04-17 10:50:01 +02:00
blk-softirq.c
block: remove a few unused exports
2018-11-15 12:13:25 -07:00
blk-stat.c
block: add SPDX tags to block layer files missing licensing information
2019-04-30 16:12:03 -06:00
blk-stat.h
block: deactivate blk_stat timer in wbt_disable_default()
2018-12-12 06:47:51 -07:00
blk-sysfs.c
blk-mq: move cancel of hctx->run_work to the front of blk_exit_queue
2020-10-29 09:57:34 +01:00
blk-throttle.c
block: make rq sector size accessible for block stats
2019-09-15 16:02:08 -06:00
blk-timeout.c
block: add SPDX tags to block layer files missing licensing information
2019-04-30 16:12:03 -06:00
blk-wbt.c
blk-wbt: fix performance regression in wbt scale_up/scale_down
2019-10-06 09:26:41 -06:00
blk-wbt.h
block/rq_qos: implement rq_qos_ops->queue_depth_changed()
2019-08-28 21:17:07 -06:00
blk-zoned.c
block: Simplify REQ_OP_ZONE_RESET_ALL handling
2020-12-30 11:50:54 +01:00
blk.h
block: fix memleak of bio integrity data
2020-01-26 10:01:09 +01:00
bounce.c
block: remove the i argument to bio_for_each_segment_all
2019-04-30 09:26:13 -06:00
bsg-lib.c
block: Fix the type of 'sts' in bsg_queue_rq()
2020-01-23 08:22:44 +01:00
bsg.c
block: switch all files cleared marked as GPLv2 to SPDX tags
2019-04-30 16:11:57 -06:00
cmdline-parser.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
compat_ioctl.c
compat_ioctl: block: handle BLKGETZONESZ/BLKGETNRZONES
2020-01-09 10:19:58 +01:00
elevator.c
block: Fix elv_support_iosched()
2019-10-14 13:54:09 -06:00
genhd.c
block: fix use-after-free in disk_part_iter_next
2021-01-17 14:05:38 +01:00
ioctl.c
block: add SPDX tags to block layer files missing licensing information
2019-04-30 16:12:03 -06:00
ioprio.c
docs: block: convert to ReST
2019-07-15 09:20:27 -03:00
Kconfig
blkcg: implement blk-iocost
2019-08-28 21:17:12 -06:00
Kconfig.iosched
docs: block: convert to ReST
2019-07-15 09:20:27 -03:00
kyber-iosched.c
blk-mq: remove blk_mq_put_ctx()
2019-07-02 21:03:27 -06:00
Makefile
blkcg: implement blk-iocost
2019-08-28 21:17:12 -06:00
mq-deadline.c
block: Introduce elevator features
2019-09-05 19:52:33 -06:00
opal_proto.h
block: sed-opal: Removed duplicate OPAL_METHOD_LENGTH definition
2019-08-20 09:34:49 -06:00
partition-generic.c
block: fix use-after-free on gendisk
2019-04-22 09:48:12 -06:00
scsi_ioctl.c
block: switch all files cleared marked as GPLv2 to SPDX tags
2019-04-30 16:11:57 -06:00
sed-opal.c
block: sed-opal: fix sparse warning: convert __be64 data
2019-10-03 14:21:32 -06:00
t10-pi.c
block: t10-pi: fix -Wswitch warning
2019-09-23 08:05:19 -06:00