linux/block
Mikulas Patocka 5af2d106ca block: fix infinite loop if the device loses discard capability
[ Upstream commit b88aef36b8 ]

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 13:40:14 +01:00
..
partitions partitions/aix: fix usage of uninitialized lv_info and lvname structures 2018-09-19 22:47:15 +02:00
badblocks.c badblocks: fix wrong return value in badblocks_set if badblocks are disabled 2017-12-20 10:07:29 +01:00
bio-integrity.c bio-integrity: Do not allocate integrity context for bio w/o data 2018-04-13 19:48:18 +02:00
bio.c block: bvec_nr_vecs() returns value for wrong slab 2018-09-15 09:42:59 +02:00
blk-cgroup.c block,blkcg: use __GFP_NOWARN for best-effort allocations in blkcg 2018-09-19 22:47:11 +02:00
blk-core.c block: do not use interruptible wait anywhere 2018-07-25 11:24:03 +02:00
blk-exec.c
blk-flush.c
blk-integrity.c block: fix blk_integrity_register to use template's interval_exp if not 0 2017-05-20 14:28:36 +02:00
blk-ioc.c
blk-lib.c block: fix infinite loop if the device loses discard capability 2018-12-29 13:40:14 +01:00
blk-map.c blk_rq_map_user_iov: fix error override 2018-02-25 11:05:42 +01:00
blk-merge.c
blk-mq-cpumap.c
blk-mq-pci.c blk-mq-pci: add a fallback when pci_irq_get_affinity returns NULL 2017-08-24 17:12:20 -07:00
blk-mq-sysfs.c blk-mq: initialize mq kobjects in blk_mq_init_allocated_queue() 2017-12-14 09:28:21 +01:00
blk-mq-tag.c blk-mq: Fix tagset reinit in the presence of cpu hot-unplug 2017-12-20 10:07:20 +01:00
blk-mq-tag.h
blk-mq.c block/mq: fix potential deadlock during cpu hotplug 2018-04-24 09:34:18 +02:00
blk-mq.h blk-mq: initialize mq kobjects in blk_mq_init_allocated_queue() 2017-12-14 09:28:21 +01:00
blk-settings.c
blk-softirq.c
blk-sysfs.c
blk-tag.c
blk-throttle.c blk-throttle: make sure expire time isn't too big 2018-03-22 09:17:44 +01:00
blk-timeout.c block: Fix a race between blk_cleanup_queue() and timeout handling 2017-11-30 08:39:06 +00:00
blk.h
bounce.c
bsg-lib.c Revert "bsg-lib: don't free job in bsg_prepare_job" 2017-10-21 17:21:33 +02:00
bsg.c sg_write()/bsg_write() is not fit to be called under KERNEL_DS 2017-01-09 08:32:25 +01:00
cfq-iosched.c block,blkcg: use __GFP_NOWARN for best-effort allocations in blkcg 2018-09-19 22:47:11 +02:00
cmdline-parser.c
compat_ioctl.c
deadline-iosched.c
elevator.c
genhd.c
ioctl.c
ioprio.c
Kconfig
Kconfig.iosched
Makefile
noop-iosched.c
partition-generic.c block: fix an error code in add_partition() 2018-04-13 19:48:04 +02:00
scsi_ioctl.c block: allow WRITE_SAME commands with the SG_IO ioctl 2017-03-22 12:43:38 +01:00
t10-pi.c