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Ming Lei 49b1f22b56 block: avoid to READ fields of null bio 
rq->bio can be NULL sometimes, such as flush request, so don't
read bio->bi_seg_front_size until this 'bio' is checked as valid.

Cc: Bart Van Assche <bvanassche@acm.org>
Reported-by: Bart Van Assche <bvanassche@acm.org>
Fixes: dcebd75592 ("block: use bio_for_each_bvec() to compute multi-page bvec count")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-02-19 09:19:06 -07:00
..
partitions
partitions/aix: append null character to print data from disk
2018-07-27 09:17:41 -06:00
badblocks.c
…
bfq-cgroup.c
blkcg: fix ref count issue with bio_blkcg() using task_css
2018-12-07 22:26:36 -07:00
bfq-iosched.c
block, bfq: fix in-service-queue check for queue merging
2019-01-31 12:50:24 -07:00
bfq-iosched.h
block, bfq: fix in-service-queue check for queue merging
2019-01-31 12:50:24 -07:00
bfq-wf2q.c
block, bfq: fix queue removal from weights tree
2019-01-31 12:50:24 -07:00
bio-integrity.c
block: remove the bio_integrity_advance export
2018-12-16 08:33:57 -07:00
bio.c
block: enable multipage bvecs
2019-02-15 08:40:12 -07:00
blk-cgroup.c
blk-cgroup: Fix doc related to blkcg_exit_queue
2019-02-10 08:24:08 -07:00
blk-core.c
block: pass no-op callback to INIT_WORK().
2019-01-30 08:53:20 -07:00
blk-exec.c
block: remove dead elevator code
2018-11-07 13:42:32 -07:00
blk-flush.c
blk-mq: fix a hung issue when fsync
2019-01-30 08:53:54 -07:00
blk-integrity.c
block: merge BIOVEC_SEG_BOUNDARY into biovec_phys_mergeable
2018-09-24 12:33:57 -06:00
blk-ioc.c
block: remove the queue_lock indirection
2018-11-15 12:17:28 -07:00
blk-iolatency.c
Blk-iolatency: warn on negative inflight IO counter
2019-02-08 12:42:27 -07:00
blk-lib.c
block: fix 32 bit overflow in __blkdev_issue_discard()
2018-11-14 08:17:18 -07:00
blk-map.c
…
blk-merge.c
block: avoid to READ fields of null bio
2019-02-19 09:19:06 -07:00
blk-mq-cpumap.c
blk-mq: initial support for multiple queue maps
2018-11-07 13:45:00 -07:00
blk-mq-debugfs-zoned.c
block: Cleanup license notice
2019-01-17 21:21:40 -07:00
blk-mq-debugfs.c
Merge tag 'v5.0-rc6' into for-5.1/block
2019-02-15 08:43:59 -07:00
blk-mq-debugfs.h
blk-mq-debugfs: support rq_qos
2018-12-16 19:53:47 -07:00
blk-mq-pci.c
blk-mq: initial support for multiple queue maps
2018-11-07 13:45:00 -07:00
blk-mq-rdma.c
blk-mq-rdma: pass in queue map to blk_mq_rdma_map_queues
2018-12-13 09:59:08 +01:00
blk-mq-sched.c
blk-mq: save queue mapping result into ctx directly
2019-02-01 08:33:04 -07:00
blk-mq-sched.h
block: mq-deadline: Fix write completion handling
2018-12-17 11:19:39 -07:00
blk-mq-sysfs.c
blk-mq: export hctx->type in debugfs instead of sysfs
2018-12-17 05:44:45 -07:00
blk-mq-tag.c
blk-mq: save queue mapping result into ctx directly
2019-02-01 08:33:04 -07:00
blk-mq-tag.h
…
blk-mq-virtio.c
blk-mq: initial support for multiple queue maps
2018-11-07 13:45:00 -07:00
blk-mq.c
block: kill QUEUE_FLAG_NO_SG_MERGE
2019-02-15 08:40:12 -07:00
blk-mq.h
Merge tag 'v5.0-rc6' into for-5.1/block
2019-02-15 08:43:59 -07:00
blk-pm.c
block: remove the queue_lock indirection
2018-11-15 12:17:28 -07:00
blk-pm.h
block: remove the queue_lock indirection
2018-11-15 12:17:28 -07:00
blk-rq-qos.c
blk-mq-debugfs: support rq_qos
2018-12-16 19:53:47 -07:00
blk-rq-qos.h
block: fix blk-iolatency accounting underflow
2018-12-17 11:19:54 -07:00
blk-settings.c
block: kill QUEUE_FLAG_FLUSH_NQ
2019-02-09 15:40:24 -07:00
blk-softirq.c
block: remove a few unused exports
2018-11-15 12:13:25 -07:00
blk-stat.c
block: remove a few unused exports
2018-11-15 12:13:25 -07:00
blk-stat.h
block: deactivate blk_stat timer in wbt_disable_default()
2018-12-12 06:47:51 -07:00
blk-sysfs.c
block: avoid setting wbt_lat_usec to current value
2019-02-11 08:20:14 -07:00
blk-throttle.c
blkcg: consolidate bio_issue_init() to be a part of core
2018-12-07 22:26:37 -07:00
blk-timeout.c
block: don't hold the queue_lock over blk_abort_request
2018-11-15 12:13:18 -07:00
blk-wbt.c
blk-wbt: Declare local functions static
2019-01-24 11:09:21 -07:00
blk-wbt.h
block: remove external dependency on wbt_flags
2018-07-09 09:07:54 -06:00
blk-zoned.c
Merge tag 'for-4.21/block-20181221' of git://git.kernel.dk/linux-block
2018-12-28 13:19:59 -08:00
blk.h
blk-mq: save queue mapping result into ctx directly
2019-02-01 08:33:04 -07:00
bounce.c
block: allow bio_for_each_segment_all() to iterate over multi-page bvec
2019-02-15 08:40:11 -07:00
bsg-lib.c
bsg: move bsg-lib parts outside of request queue
2018-11-07 13:42:33 -07:00
bsg.c
bsg: deprecate BIDI support in bsg
2018-12-21 08:47:58 -07:00
cmdline-parser.c
…
compat_ioctl.c
…
elevator.c
block: avoid setting none scheduler if it's already none
2019-02-11 08:21:40 -07:00
genhd.c
block: return just one value from part_in_flight
2018-12-10 08:30:38 -07:00
ioctl.c
block: Introduce BLKGETNRZONES ioctl
2018-10-25 11:17:40 -06:00
ioprio.c
block: add ioprio_check_cap function
2018-05-31 10:50:54 -04:00
Kconfig
Merge tag 'kconfig-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
2018-12-29 13:03:29 -08:00
Kconfig.iosched
block: remove legacy IO schedulers
2018-11-07 13:42:32 -07:00
kyber-iosched.c
kyber: use sbitmap add_wait_queue/list_del wait helpers
2018-12-20 12:17:21 -07:00
Makefile
block: remove legacy IO schedulers
2018-11-07 13:42:32 -07:00
mq-deadline.c
block: mq-deadline: Fix write completion handling
2018-12-17 11:19:39 -07:00
opal_proto.h
…
partition-generic.c
block: return just one value from part_in_flight
2018-12-10 08:30:38 -07:00
scsi_ioctl.c
block: consistently use GFP_NOIO instead of __GFP_NORECLAIM
2018-05-14 08:55:18 -06:00
sed-opal.c
block: sed-opal: Fix a couple off by one bugs
2018-06-20 12:04:06 -06:00
t10-pi.c
block: move dif_prepare/dif_complete functions to block layer
2018-07-30 08:27:02 -06:00