Hannes Reinecke 2d99b55d37 bio: return EINTR if copying to user space got interrupted ... Commit 35dc248383 introduced a check for current->mm to see if we have a user space context and only copies data if we do. Now if an IO gets interrupted by a signal data isn't copied into user space any more (as we don't have a user space context) but user space isn't notified about it. This patch modifies the behaviour to return -EINTR from bio_uncopy_user() to notify userland that a signal has interrupted the syscall, otherwise it could lead to a situation where the caller may get a buffer with no data returned. This can be reproduced by issuing SG_IO ioctl()s in one thread while constantly sending signals to it. Fixes: 35dc248 [SCSI] sg: Fix user memory corruption when SG_IO is interrupted by a signal Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Hannes Reinecke <hare@suse.de> Cc: stable@vger.kernel.org # v.3.11+ Signed-off-by: Jens Axboe <axboe@fb.com>		2016-02-12 08:17:41 -07:00
..
partitions	mac: validate mac_partition is within sector	2015-11-20 08:49:28 -07:00
badblocks.c	block, badblocks: introduce devm_init_badblocks	2016-01-09 08:39:04 -08:00
bio-integrity.c	blk-integrity: checking for NULL instead of IS_ERR	2015-12-09 08:04:29 -07:00
bio.c	bio: return EINTR if copying to user space got interrupted	2016-02-12 08:17:41 -07:00
blk-cgroup.c	block: fix module reference leak on put_disk() call for cgroups throttle	2016-02-09 12:33:35 -07:00
blk-core.c	Merge branch 'for-4.5/nvme' of git://git.kernel.dk/linux-block	2016-01-21 19:58:02 -08:00
blk-exec.c	block: move PM request support to IDE	2015-05-05 13:40:42 -06:00
blk-flush.c	Revert "blk-flush: Queue through IO scheduler when flush not required"	2015-11-25 11:02:02 -07:00
blk-integrity.c	block, libnvdimm, nvme: provide a built-in blk_integrity nop profile	2015-10-21 14:43:45 -06:00
blk-ioc.c	mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd	2015-11-06 17:50:42 -08:00
blk-lib.c	block: re-add discard_granularity and alignment checks	2015-10-28 09:12:58 +09:00
blk-map.c	block: Copy a user iovec if it includes gaps	2015-09-11 09:03:50 -06:00
blk-merge.c	block: fix bio splitting on max sectors	2016-01-22 20:42:30 -07:00
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: Avoid memoryless numa node encoded in hctx numa_node	2015-12-03 09:56:27 -07:00
blk-mq-sysfs.c	block: add block polling support	2015-11-07 10:40:47 -07:00
blk-mq-tag.c	blk-mq: add a flags parameter to blk_mq_alloc_request	2015-12-01 10:53:59 -07:00
blk-mq-tag.h	blk-mq: factor out a helper to iterate all tags for a request_queue	2015-10-01 10:10:57 +02:00
blk-mq.c	blk-mq: End unstarted requests on dying queue	2016-02-11 13:14:00 -07:00
blk-mq.h	blk-mq: add a flags parameter to blk_mq_alloc_request	2015-12-01 10:53:59 -07:00
blk-settings.c	block: Initialize max_dev_sectors to 0	2016-02-11 13:10:39 -07:00
blk-softirq.c	block: fix regression with block enabled tagging	2014-04-09 21:54:06 -06:00
blk-sysfs.c	Merge branch 'mkp-fixes' into fixes	2015-12-03 09:32:33 -08:00
blk-tag.c	block: support different tag allocation policy	2015-01-23 14:15:46 -07:00
blk-throttle.c	cgroup: replace cgroup_on_dfl() tests in controllers with cgroup_subsys_on_dfl()	2015-09-18 11:56:28 -04:00
blk-timeout.c	block: remove REQ_NO_TIMEOUT flag	2015-12-22 09:38:34 -07:00
blk.h	block: defer timeouts to a workqueue	2015-12-22 09:38:16 -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	bsg: Remove unused function bsg_goose_queue()	2012-12-06 14:33:02 +01:00
bsg.c	block: Simplify bsg complete all	2015-02-04 09:57:52 -07:00
cfq-iosched.c	cgroup: replace cgroup_on_dfl() tests in controllers with cgroup_subsys_on_dfl()	2015-09-18 11:56:28 -04:00
cmdline-parser.c	block: remove unrelated header files and export symbol	2014-01-21 20:18:26 -08:00
compat_ioctl.c	block, bdi: an active gendisk always has a request_queue associated with it	2014-09-08 10:00:35 -06:00
deadline-iosched.c	deadline: remove unused struct member	2016-02-01 09:09:55 -07:00
elevator.c	block: check bio_mergeable() early before merging	2015-10-21 15:00:54 -06:00
genhd.c	Merge branch 'for-4.5/core' of git://git.kernel.dk/linux-block	2016-01-19 15:03:34 -08:00
ioctl.c	wrappers for ->i_mutex access	2016-01-22 18:04:28 -05:00
ioprio.c	pidns: fix set/getpriority and ioprio_set/get in PRIO_USER mode	2015-11-06 17:50:42 -08:00
Kconfig	block: Add T10 Protection Information functions	2014-09-27 09:14:59 -06:00
Kconfig.iosched	blkcg: make CONFIG_BLK_CGROUP bool	2012-03-06 21:27:21 +01:00
Makefile	Initial roundup of 4.5 merge window patches	2016-01-23 18:45:06 -08:00
noop-iosched.c	elevator: use list_{first,prev,next}_entry	2015-11-16 15:21:48 -07:00
partition-generic.c	Return EBUSY from BLKRRPART for mounted whole-dev fs	2015-11-25 20:49:24 -07:00
scsi_ioctl.c	mm, page_alloc: rename __GFP_WAIT to __GFP_RECLAIM	2015-11-06 17:50:42 -08:00
t10-pi.c	block: Consolidate static integrity profile properties	2015-10-21 14:42:38 -06:00