Roland Dreier 893d290f1d block: Don't access request after it might be freed ...

After we've done __elv_add_request() and __blk_run_queue() in
blk_execute_rq_nowait(), the request might finish and be freed
immediately.  Therefore checking if the type is REQ_TYPE_PM_RESUME
isn't safe afterwards, because if it isn't, rq might be gone.
Instead, check beforehand and stash the result in a temporary.

This fixes crashes in blk_execute_rq_nowait() I get occasionally when
running with lots of memory debugging options enabled -- I think this
race is usually harmless because the window for rq to be reallocated
is so small.

Signed-off-by: Roland Dreier <roland@purestorage.com>
Cc: stable@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>

2012-11-23 14:32:55 +01:00

..

partitions

s390/partitions: make partition detection independent from DASD ioctls

2012-09-26 15:45:05 +02:00

blk-cgroup.c

blkcg: stop iteration early if root_rl is the only request list

2012-10-22 22:00:26 +02:00

blk-cgroup.h

blkcg: implement per-blkg request allocation

2012-06-26 18:42:49 -04:00

blk-core.c

block: Add blk_rq_pos(rq) to sort rq when plushing

2012-10-25 21:58:17 +02:00

blk-exec.c

block: Don't access request after it might be freed

2012-11-23 14:32:55 +01:00

blk-flush.c

…

blk-integrity.c

…

blk-ioc.c

block: uninitialized ioc->nr_tasks triggers WARN_ON

2012-08-01 12:17:27 +02:00

blk-iopoll.c

…

blk-lib.c

block: Make blkdev_issue_zeroout use WRITE SAME

2012-09-20 14:31:49 +02:00

blk-map.c

…

blk-merge.c

block: Implement support for WRITE SAME

2012-09-20 14:31:45 +02:00

blk-settings.c

block: Implement support for WRITE SAME

2012-09-20 14:31:45 +02:00

blk-softirq.c

…

blk-sysfs.c

block: lift the initial queue bypass mode on blk_register_queue() instead of blk_init_allocated_queue()

2012-09-21 15:32:57 +02:00

blk-tag.c

block/blk-tag.c: Remove useless kfree

2012-09-12 22:25:12 +02:00

blk-throttle.c

workqueue: use mod_delayed_work() instead of __cancel + queue

2012-08-21 13:18:24 -07:00

blk-timeout.c

…

blk.h

block: Clean up special command handling logic

2012-09-20 14:31:38 +02:00

bsg-lib.c

block: drop custom queue draining used by scsi_transport_{iscsi|fc}

2012-06-25 11:53:48 +02:00

bsg.c

…

cfq-iosched.c

…

compat_ioctl.c

…

deadline-iosched.c

…

elevator.c

block: Clean up special command handling logic

2012-09-20 14:31:38 +02:00

genhd.c

Merge branch 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

2012-10-02 09:54:49 -07:00

ioctl.c

Merge branch 'for-3.7/core' of git://git.kernel.dk/linux-block

2012-10-11 09:04:23 +09:00

Kconfig

block: remove CONFIG_EXPERIMENTAL

2012-10-23 22:30:34 +02:00

Kconfig.iosched

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Makefile

…

noop-iosched.c

…

partition-generic.c

block: add partition resize function to blkpg ioctl

2012-08-01 12:24:18 +02:00

scsi_ioctl.c

…