Jens Axboe 3a07bb1d76 blk-mq: fix potential oops with polling and blk-mq scheduler ... If we have a scheduler attached, blk_mq_tag_to_rq() on the scheduled tags will return NULL if a request is no longer in flight. This is different than using the normal tags, where it will always return the fixed request. Check for this condition for polling, in case we happen to enter polling for a completed request. The request address remains valid, so this check and return should be perfectly safe. Fixes: bd166ef183 ("blk-mq-sched: add framework for MQ capable IO schedulers") Tested-by: Stephen Bates <sbates@raithlin.com> Signed-off-by: Jens Axboe <axboe@fb.com>		2017-04-20 14:53:28 -06:00
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partitions	partitions/efi: Fix integer overflow in GPT size calculation	2017-01-17 09:02:31 -07:00
badblocks.c	badblocks: badblocks_set/clear update unacked_exist	2016-10-21 15:45:47 -06:00
bio-integrity.c	block: remove bio_is_rw	2016-10-28 08:45:17 -06:00
bio.c	blk: Ensure users for current->bio_list can see the full list.	2017-03-11 15:31:37 -07:00
blk-cgroup.c	sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h>	2017-03-02 08:42:32 +01:00
blk-core.c	blk: Ensure users for current->bio_list can see the full list.	2017-03-11 15:31:37 -07:00
blk-exec.c	block: introduce blk_rq_is_passthrough	2017-01-31 14:00:34 -07:00
blk-flush.c	block: don't defer flushes on blk-mq + scheduling	2017-02-17 12:35:47 -07:00
blk-integrity.c	block: Use pointer to backing_dev_info from request_queue	2017-02-02 08:20:48 -07:00
blk-ioc.c	Merge branch 'for-linus' of git://git.kernel.dk/linux-block	2017-03-03 10:53:35 -08:00
blk-lib.c	block: don't try Write Same from __blkdev_issue_zeroout	2017-02-06 09:34:46 -07:00
blk-map.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>	2017-03-02 08:42:36 +01:00
blk-merge.c	block: optionally merge discontiguous discard bios into a single request	2017-02-08 13:43:08 -07:00
blk-mq-cpumap.c	blk-mq: export blk_mq_map_queues	2016-11-08 17:30:00 -05:00
blk-mq-debugfs.c	block: use same block debugfs directory for blk-mq and blktrace	2017-02-02 10:20:16 -07:00
blk-mq-pci.c	blk_mq: linux/blk-mq.h does not include all the headers it depends on	2016-09-19 08:21:51 -06:00
blk-mq-sched.c	blk-mq: Restart a single queue if tag sets are shared	2017-04-07 12:40:09 -06:00
blk-mq-sched.h	blk-mq: Restart a single queue if tag sets are shared	2017-04-07 12:40:09 -06:00
blk-mq-sysfs.c	blk-mq: free hctx->cpumask in release handler of hctx's kobject	2017-03-08 09:56:12 -07:00
blk-mq-tag.c	blk-mq: Fix tagset reinit in the presence of cpu hot-unplug	2017-03-13 08:14:23 -06:00
blk-mq-tag.h	blk-mq-sched: Allocate sched reserved tags as specified in the original queue tagset	2017-03-02 08:56:04 -07:00
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: fix potential oops with polling and blk-mq scheduler	2017-04-20 14:53:28 -06:00
blk-mq.h	blk-mq: use the right hctx when getting a driver tag fails	2017-04-07 08:56:26 -06:00
blk-settings.c	block: optionally merge discontiguous discard bios into a single request	2017-02-08 13:43:08 -07:00
blk-softirq.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/topology.h>	2017-03-02 08:42:26 +01:00
blk-stat.c	blk-stat: fix blk_stat_sum() if all samples are batched	2017-03-16 09:46:14 -06:00
blk-stat.h	block: add scalable completion tracking of requests	2016-11-10 13:53:26 -07:00
blk-sysfs.c	blk-mq-sched: fix crash in switch error path	2017-04-07 08:56:48 -06:00
blk-tag.c	blk-mq-sched: add framework for MQ capable IO schedulers	2017-01-17 10:04:20 -07:00
blk-throttle.c	scripts/spelling.txt: add "embeded" pattern and fix typo instances	2017-02-27 18:43:47 -08:00
blk-timeout.c	block: remove REQ_NO_TIMEOUT flag	2015-12-22 09:38:34 -07:00
blk-wbt.c	block: Use pointer to backing_dev_info from request_queue	2017-02-02 08:20:48 -07:00
blk-wbt.h	blk-wbt: allow wbt to be enabled always through sysfs	2016-11-28 10:27:03 -07:00
blk-zoned.c	block: Rename blk_queue_zone_size and bdev_zone_size	2017-01-12 07:58:32 -07:00
blk.h	block: optionally merge discontiguous discard bios into a single request	2017-02-08 13:43:08 -07:00
bounce.c	Merge branch 'for-linus' of git://git.kernel.dk/linux-block	2015-09-19 18:57:09 -07:00
bsg-lib.c	block: split scsi_request out of struct request	2017-01-27 15:08:35 -07:00
bsg.c	lib/vsprintf.c: remove %Z support	2017-02-27 18:43:47 -08:00
cfq-iosched.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/clock.h>	2017-03-02 08:42:27 +01:00
cmdline-parser.c	block: remove unrelated header files and export symbol	2014-01-21 20:18:26 -08:00
compat_ioctl.c	block: Get rid of blk_get_backing_dev_info()	2017-02-02 08:21:32 -07:00
deadline-iosched.c	block: enumify ELEVATOR_*_MERGE	2017-02-08 13:43:06 -07:00
elevator.c	block: respect BLK_MQ_F_NO_SCHED	2017-04-19 14:15:43 -06:00
genhd.c	Revert "scsi, block: fix duplicate bdi name registration crashes"	2017-03-08 10:55:17 -07:00
ioctl.c	block: Get rid of blk_get_backing_dev_info()	2017-02-02 08:21:32 -07:00
ioprio.c	sched/headers: Prepare to move the task_lock()/unlock() APIs to <linux/sched/task.h>	2017-03-02 08:42:38 +01:00
Kconfig	virtio, vhost: optimizations, fixes	2017-03-02 13:53:13 -08:00
Kconfig.iosched	block: get rid of blk-mq default scheduler choice Kconfig entries	2017-02-22 13:19:45 -07:00
Makefile	virtio, vhost: optimizations, fixes	2017-03-02 13:53:13 -08:00
mq-deadline.c	block: enumify ELEVATOR_*_MERGE	2017-02-08 13:43:06 -07:00
noop-iosched.c	block: move existing elevator ops to union	2017-01-17 10:03:33 -07:00
opal_proto.h	block/sed-opal: allocate struct opal_dev dynamically	2017-02-17 12:41:47 -07:00
partition-generic.c	block: Rename blk_queue_zone_size and bdev_zone_size	2017-01-12 07:58:32 -07:00
scsi_ioctl.c	block: fold cmd_type into the REQ_OP_ space	2017-01-31 14:00:44 -07:00
sed-opal.c	block/sed: Fix opal user range check and unused variables	2017-03-08 09:56:12 -07:00
t10-pi.c	block: Consolidate static integrity profile properties	2015-10-21 14:42:38 -06:00