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linux/block
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Tony Battersby c5caff7344 blk-mq: fix double-free in error path 
commit 564e559f2b upstream.

If the allocation of bt->bs fails, then bt->map can be freed twice, once
in blk_mq_init_bitmap_tags() -> bt_alloc(), and once in
blk_mq_init_bitmap_tags() -> bt_free().  Fix by setting the pointer to
NULL after the first free.

Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
History 2015-03-02 13:17:12 +00:00
..
partitions partitions: aix.c: off by one bug 2014-10-05 13:41:11 -07:00
bio-integrity.c block: move bio.c and bio-integrity.c from fs/ to block/ 2014-05-19 08:34:46 -06:00
bio.c block: add support for limiting gaps in SG lists 2014-06-24 16:22:24 -06:00
blk-cgroup.c blkcg: don't call into policy draining if root_blkg is already gone 2014-07-12 17:55:10 +02:00
blk-cgroup.h Revert "block: add __init to blkcg_policy_register" 2014-06-22 16:34:11 -06:00
blk-core.c blk-mq: Fix a use-after-free 2015-01-15 10:43:41 +00:00
blk-exec.c block: blk-exec.c: Cleaning up local variable address returnd 2014-06-08 19:51:31 -06:00
blk-flush.c block: remove elv_abort_queue and blk_abort_flushes 2014-06-11 15:31:21 -06:00
blk-integrity.c bio-integrity: Convert to bvec_iter 2013-11-23 22:33:50 -08:00
blk-ioc.c block: Substitute rcu_access_pointer() for rcu_dereference_raw() 2014-02-18 12:21:26 -08:00
blk-iopoll.c Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next 2014-06-03 12:57:53 -07:00
blk-lib.c block/blk-lib.c: make __blkdev_issue_zeroout static 2014-05-26 17:39:09 -06:00
blk-map.c block: remove struct request buffer member 2014-04-15 14:03:02 -06:00
blk-merge.c block: add support for limiting gaps in SG lists 2014-06-24 16:22:24 -06:00
blk-mq-cpu.c blk-mq: add file comments and update copyright notices 2014-05-28 10:15:41 -06:00
blk-mq-cpumap.c blk-mq: use 'nr_cpu_ids' as highest CPU ID count for hwq <-> cpu map 2015-01-12 15:43:57 +00:00
blk-mq-sysfs.c blk-mq: Fix uninitialized kobject at CPU hotplugging 2015-01-15 10:43:50 +00:00
blk-mq-tag.c blk-mq: fix double-free in error path 2015-03-02 13:17:12 +00:00
blk-mq-tag.h blk-mq: bitmap tag: fix races on shared ::wake_index fields 2014-06-17 22:12:35 -07:00
blk-mq.c blk-mq: Avoid race condition with uninitialized requests 2014-10-05 13:41:09 -07:00
blk-mq.h blk-mq: fix schedule from atomic context 2014-06-03 21:04:39 -06:00
blk-settings.c block: fix alignment_offset math that assumes io_min is a power-of-2 2014-11-17 14:11:44 +00:00
blk-softirq.c block: fix regression with block enabled tagging 2014-04-09 21:54:06 -06:00
blk-sysfs.c blk-mq: Fix a use-after-free 2015-01-15 10:43:41 +00:00
blk-tag.c block: don't assume last put of shared tags is for the host 2014-07-08 12:25:28 +02:00
blk-throttle.c Merge branch 'for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup 2014-06-09 15:03:33 -07:00
blk-timeout.c block: ensure that the timer is always added 2014-05-30 15:41:39 -06:00
blk.h block: remove elv_abort_queue and blk_abort_flushes 2014-06-11 15:31:21 -06:00
bounce.c mm: convert some level-less printks to pr_* 2014-06-06 16:08:18 -07:00
bsg-lib.c bsg: Remove unused function bsg_goose_queue() 2012-12-06 14:33:02 +01:00
bsg.c block: add blk_rq_set_block_pc() 2014-06-06 07:57:37 -06:00
cfq-iosched.c cfq-iosched: handle failure of cfq group allocation 2015-03-02 13:17:10 +00:00
cmdline-parser.c block: remove unrelated header files and export symbol 2014-01-21 20:18:26 -08:00
compat_ioctl.c block: provide compat ioctl for BLKZEROOUT 2014-07-14 12:27:20 +02:00
deadline-iosched.c block: Stop abusing csd.list for fifo_time 2014-02-24 14:46:32 -08:00
elevator.c Revert "block: add __init to elv_register" 2014-06-22 16:34:11 -06:00
genhd.c genhd: check for int overflow in disk_expand_part_tbl() 2015-01-05 13:48:47 +00:00
ioctl.c block: replace IS_ERR and PTR_ERR with PTR_ERR_OR_ZERO 2013-11-08 09:05:31 -07:00
ioprio.c block: Fix computation of merged request priority 2014-11-20 12:01:52 +00:00
Kconfig block: change config option name for cmdline partition parsing 2013-09-30 14:31:02 -07:00
Kconfig.iosched blkcg: make CONFIG_BLK_CGROUP bool 2012-03-06 21:27:21 +01:00
Makefile block: move mm/bounce.c to block/ 2014-05-19 20:01:52 -06:00
noop-iosched.c elevator: Fix a race in elevator switching 2013-07-03 13:25:24 +02:00
partition-generic.c block: Fix dev_t minor allocation lifetime 2014-10-05 13:41:05 -07:00
scsi_ioctl.c scsi: Fix error handling in SCSI_IOCTL_SEND_COMMAND 2014-11-13 11:48:39 +00:00