Mikulas Patocka 07eae146f5 block: fix infinite loop if the device loses discard capability ...

[ Upstream commit b88aef36b87c9787a4db724923ec4f57dfd513f3 ]

If __blkdev_issue_discard is in progress and a device mapper device is
reloaded with a table that doesn't support discard,
q->limits.max_discard_sectors is set to zero. This results in infinite
loop in __blkdev_issue_discard.

This patch checks if max_discard_sectors is zero and aborts with
-EOPNOTSUPP.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Tested-by: Zdenek Kabelac <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2018-12-29 13:39:07 +01:00

..

partitions

partitions/aix: fix usage of uninitialized lv_info and lvname structures

2018-09-19 22:43:44 +02:00

badblocks.c

badblocks: fix wrong return value in badblocks_set if badblocks are disabled

2017-12-20 10:10:26 +01:00

bfq-cgroup.c

block: bfq: swap puts in bfqg_and_blkg_put

2018-09-19 22:43:35 +02:00

bfq-iosched.c

block, bfq: fix wrong init of saved start time for weight raising

2018-08-17 21:01:11 +02:00

bfq-iosched.h

Merge branch 'for-4.14/block' of git://git.kernel.dk/linux-block

2017-09-07 11:59:42 -07:00

bfq-wf2q.c

block, bfq: correctly charge and reset entity service in all cases

2018-11-13 11:14:55 -08:00

bio-integrity.c

Merge branch 'for-4.14/block' of git://git.kernel.dk/linux-block

2017-09-07 11:59:42 -07:00

bio.c

block: bvec_nr_vecs() returns value for wrong slab

2018-09-15 09:45:30 +02:00

blk-cgroup.c

blkcg: init root blkcg_gq under lock

2018-06-21 04:02:44 +09:00

blk-core.c

SCSI: fix queue cleanup race before queue initialization is done

2018-11-21 09:24:09 +01:00

blk-exec.c

block: introduce new block status code type

2017-06-09 09:27:32 -06:00

blk-flush.c

block: update comments to reflect REQ_FLUSH -> REQ_PREFLUSH rename

2017-08-25 10:36:54 -06:00

blk-integrity.c

block: switch bios to blk_status_t

2017-06-09 09:27:32 -06:00

blk-ioc.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

blk-lib.c

block: fix infinite loop if the device loses discard capability

2018-12-29 13:39:07 +01:00

blk-map.c

blk_rq_map_user_iov: fix error override

2018-02-25 11:07:49 +01:00

blk-merge.c

blk-mq: fix discard merge with scheduler attached

2018-04-26 11:02:15 +02:00

blk-mq-cpumap.c

blk-mq: don't keep offline CPUs mapped to hctx 0

2018-04-19 08:56:20 +02:00

blk-mq-debugfs.c

blk-mq-debugfs: don't allow write on attributes with seq_operations set

2018-04-26 11:02:11 +02:00

blk-mq-debugfs.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

blk-mq-pci.c

blk-mq-pci: add a fallback when pci_irq_get_affinity returns NULL

2017-08-18 08:08:14 -06:00

blk-mq-rdma.c

block: Add rdma affinity based queue mapping helper

2017-08-08 14:58:03 -04:00

blk-mq-sched.c

blk-mq: only attempt to merge bio if there is rq in sw queue

2018-09-26 08:38:13 +02:00

blk-mq-sched.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

blk-mq-sysfs.c

blk-mq: untangle debugfs and sysfs

2017-05-04 08:24:13 -06:00

blk-mq-tag.c

blk-mq: fix updating tags depth

2018-09-19 22:43:39 +02:00

blk-mq-tag.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

blk-mq-virtio.c

blk-mq: provide a default queue mapping for virtio device

2017-02-27 20:54:05 +02:00

blk-mq.c

blk-mq: I/O and timer unplugs are inverted in blktrace

2018-10-13 09:27:22 +02:00

blk-mq.h

blk-mq: fix sysfs inflight counter

2018-06-21 04:02:49 +09:00

blk-settings.c

block: allow max_discard_segments to be stacked

2018-09-26 08:38:00 +02:00

blk-softirq.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

blk-stat.c

blk-stat: don't use this_cpu_ptr() in a preemptable section

2017-05-10 07:40:18 -06:00

blk-stat.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

blk-sysfs.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

blk-tag.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

blk-throttle.c

block-throttle: avoid double charge

2017-12-29 17:53:47 +01:00

blk-timeout.c

block: Fix a race between blk_cleanup_queue() and timeout handling

2017-11-30 08:40:52 +00:00

blk-wbt.c

blk-wbt: account flush requests correctly

2018-02-22 15:42:29 +01:00

blk-wbt.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

blk-zoned.c

blkdev_report_zones_ioctl(): Use vmalloc() to allocate large buffers

2018-06-16 09:45:14 +02:00

blk.h

block: drain queue before waiting for q_usage_counter becoming zero

2018-03-03 10:24:35 +01:00

bounce.c

block: don't let passthrough IO go into .make_request_fn()

2018-01-02 20:31:05 +01:00

bsg-lib.c

bsg-lib: fix use-after-free under memory-pressure

2017-10-04 08:35:04 -06:00

bsg.c

bsg: remove #if 0'ed code

2017-08-29 10:50:30 -06:00

cfq-iosched.c

cfq: Suppress compiler warnings about comparisons

2018-09-15 09:45:31 +02:00

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

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

deadline-iosched.c

block, scheduler: convert xxx_var_store to void

2017-08-28 10:01:08 -06:00

elevator.c

elevator: lookup mq vs non-mq elevators

2018-12-21 14:13:10 +01:00

genhd.c

blk-mq: fix sysfs inflight counter

2018-06-21 04:02:49 +09:00

ioctl.c

block: remove the discard_zeroes_data flag

2017-04-08 11:25:38 -06:00

ioprio.c

block: Add fallthrough markers to switch statements

2017-06-21 11:46:07 -06:00

Kconfig

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

Kconfig.iosched

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

kyber-iosched.c

block: kyber: fix domain token leak during requeue

2018-03-08 22:41:05 -08:00

Makefile

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

mq-deadline.c

mq-deadline: Enable auto-loading when built as module

2017-08-29 10:47:23 -06:00

noop-iosched.c

block: move existing elevator ops to union

2017-01-17 10:03:33 -07:00

opal_proto.h

block: sed-opal: Set MBRDone on S3 resume path if TPER is MBREnabled

2017-09-11 09:45:52 -06:00

partition-generic.c

blk-mq: fix sysfs inflight counter

2018-06-21 04:02:49 +09:00

scsi_ioctl.c

block: Change argument type of scsi_req_init()

2017-06-20 19:27:14 -06:00

sed-opal.c

block: sed-opal: Fix a couple off by one bugs

2018-08-24 13:09:03 +02:00

t10-pi.c

t10-pi: Move opencoded contants to common header

2017-07-03 16:56:25 -06:00