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Christoph Hellwig ebc0e91ba7 block: initialize integrity buffer to zero before writing it to media 
[ Upstream commit 899ee2c3829c5ac14bfc7d3c4a5846c0b709b78f ]

Metadata added by bio_integrity_prep is using plain kmalloc, which leads
to random kernel memory being written media.  For PI metadata this is
limited to the app tag that isn't used by kernel generated metadata,
but for non-PI metadata the entire buffer leaks kernel memory.

Fix this by adding the __GFP_ZERO flag to allocations for writes.

Fixes: 7ba1ba12eeef ("block: Block layer data integrity support")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Kanchan Joshi <joshi.k@samsung.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20240613084839.1044015-2-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-08-03 08:59:10 +02:00
..
partitions
Compactifying bdev flags
2024-05-21 13:02:56 -07:00
badblocks.c
badblocks: avoid checking invalid range in badblocks_check()
2023-12-23 18:38:08 -07:00
bdev.c
Compactifying bdev flags
2024-05-21 13:02:56 -07:00
bfq-cgroup.c
block: add blk_time_get_ns() and blk_time_get() helpers
2024-02-05 10:07:22 -07:00
bfq-iosched.c
block: add blk_time_get_ns() and blk_time_get() helpers
2024-02-05 10:07:22 -07:00
bfq-iosched.h
block, bfq: remove BFQ_WEIGHT_LEGACY_DFL
2023-04-06 16:17:32 -06:00
bfq-wf2q.c
block, bfq: inject I/O to underutilized actuators
2023-01-29 15:18:33 -07:00
bio-integrity.c
block: initialize integrity buffer to zero before writing it to media
2024-08-03 08:59:10 +02:00
bio.c
for-6.10-tag
2024-05-14 17:25:36 -07:00
blk-cgroup-fc-appid.c
block: Replace all non-returning strlcpy with strscpy
2023-06-01 09:13:31 -06:00
blk-cgroup-rwstat.c
blk-cgroup: use group allocation/free of per-cpu counters API
2024-04-03 09:10:17 -06:00
blk-cgroup-rwstat.h
block: Use the new blk_opf_t type
2022-07-14 12:14:30 -06:00
blk-cgroup.c
blk-cgroup: Properly propagate the iostat update up the hierarchy
2024-05-15 20:15:54 -06:00
blk-cgroup.h
block: fix q->blkg_list corruption during disk rebind
2024-04-07 15:50:13 -06:00
blk-core.c
block-6.10-20240523
2024-05-23 13:44:47 -07:00
blk-crypto-fallback.c
block, fs: Restore the per-bio/request data lifetime fields
2024-02-06 14:31:05 +01:00
blk-crypto-internal.h
blk-crypto: remove blk_crypto_insert_cloned_request()
2023-03-16 09:35:09 -06:00
blk-crypto-profile.c
blk-crypto: use dynamic lock class for blk_crypto_profile::lock
2023-07-05 16:36:12 -06:00
blk-crypto-sysfs.c
block: make kobj_type structures constant
2023-02-09 09:38:16 -07:00
blk-crypto.c
blk-crypto: make blk_crypto_evict_key() more robust
2023-03-16 09:35:09 -06:00
blk-flush.c
block: fix request.queuelist usage in flush
2024-06-12 10:58:11 -06:00
blk-ia-ranges.c
block: make kobj_type structures constant
2023-02-09 09:38:16 -07:00
blk-integrity.c
block: support PI at non-zero offset within metadata
2024-02-12 08:49:31 -07:00
blk-ioc.c
blk-ioc: fix recursive spin_lock/unlock_irq() in ioc_clear_queue()
2023-06-07 07:51:00 -06:00
blk-iocost.c
blk-iocost: do not WARN if iocg was already offlined
2024-04-19 08:06:24 -06:00
blk-iolatency.c
block: add blk_time_get_ns() and blk_time_get() helpers
2024-02-05 10:07:22 -07:00
blk-ioprio.c
blk-ioprio: Introduce promote-to-rt policy
2023-06-06 22:26:26 -06:00
blk-ioprio.h
blk-ioprio: pass a gendisk to blk_ioprio_init and blk_ioprio_exit
2022-09-26 19:09:31 -06:00
blk-lib.c
block: add a blk_alloc_discard_bio helper
2024-05-07 07:29:42 -06:00
blk-map.c
block: Fix WARNING in _copy_from_iter
2024-01-23 08:56:55 -07:00
blk-merge.c
block: support to account io_ticks precisely
2024-05-09 07:59:44 -06:00
blk-mq-cpumap.c
blk-mq: include <linux/blk-mq.h> in block/blk-mq.h
2023-04-13 06:52:29 -06:00
blk-mq-debugfs.c
block: Remove zone write locking
2024-04-17 08:44:03 -06:00
blk-mq-debugfs.h
block: Replace zone_wlock debugfs entry with zone_wplugs entry
2024-04-17 08:44:03 -06:00
blk-mq-pci.c
blk-mq: include <linux/blk-mq.h> in block/blk-mq.h
2023-04-13 06:52:29 -06:00
blk-mq-sched.c
blk-mq: Remove the hctx 'run' debugfs attribute
2024-01-17 14:16:34 -07:00
blk-mq-sched.h
blk-mq: make sure elevator callbacks aren't called for passthrough request
2023-05-18 19:42:54 -06:00
blk-mq-sysfs.c
blk-mq: include <linux/blk-mq.h> in block/blk-mq.h
2023-04-13 06:52:29 -06:00
blk-mq-tag.c
for-6.5/block-2023-06-23
2023-06-26 12:47:20 -07:00
blk-mq-virtio.c
blk-mq: include <linux/blk-mq.h> in block/blk-mq.h
2023-04-13 06:52:29 -06:00
blk-mq.c
block-6.10-20240523
2024-05-23 13:44:47 -07:00
blk-mq.h
block: Do not special-case plugging of zone write operations
2024-04-17 08:44:03 -06:00
blk-pm.c
block: Remove blk_set_runtime_active()
2023-11-20 10:22:40 -07:00
blk-pm.h
block: Remove unused blk_pm_*() function definitions
2021-02-22 06:33:48 -07:00
blk-rq-qos.c
block: correct stale comment in rq_qos_wait
2023-09-18 14:15:28 -06:00
blk-rq-qos.h
block: skip QUEUE_FLAG_STATS and rq-qos for passthrough io
2023-12-01 18:29:18 -07:00
blk-settings.c
block: check for max_hw_sectors underflow
2024-05-28 06:55:23 -06:00
blk-stat.c
blk-throttle: remove CONFIG_BLK_DEV_THROTTLING_LOW
2024-05-09 09:44:55 -06:00
blk-stat.h
block: delete redundant function declaration
2024-05-27 13:58:06 -06:00
blk-sysfs.c
blk-throttle: delay initialization until configuration
2024-05-09 09:44:56 -06:00
blk-throttle.c
blk-throttle: Fix incorrect display of io.max
2024-05-30 19:44:29 -06:00
blk-throttle.h
blk-throttle: Fix incorrect display of io.max
2024-05-30 19:44:29 -06:00
blk-timeout.c
…
blk-wbt.c
for-6.9/block-20240310
2024-03-11 11:43:44 -07:00
blk-wbt.h
blk-wbt: remove the separate write cache tracking
2023-12-26 09:28:10 -07:00
blk-zoned.c
block: Optimize disk zone resource cleanup
2024-06-12 10:56:45 -06:00
blk.h
bd_inode series
2024-05-21 09:51:42 -07:00
bounce.c
block, fs: Restore the per-bio/request data lifetime fields
2024-02-06 14:31:05 +01:00
bsg-lib.c
scsi: bsg: Pass queue_limits to bsg_setup_queue()
2024-04-11 21:37:48 -04:00
bsg.c
SCSI misc on 20230629
2023-06-30 11:57:07 -07:00
disk-events.c
block: move bdev_mark_dead out of disk_check_media_change
2023-10-28 13:29:23 +02:00
early-lookup.c
wrapper for access to ->bd_partno
2024-05-02 17:48:09 -04:00
elevator.c
block: Remove elevator required features
2024-04-17 08:44:03 -06:00
elevator.h
block: Remove elevator required features
2024-04-17 08:44:03 -06:00
fops.c
bd_inode series
2024-05-21 09:51:42 -07:00
genhd.c
Compactifying bdev flags
2024-05-21 13:02:56 -07:00
holder.c
block: fix deadlock between bd_link_disk_holder and partition scan
2024-02-23 07:44:19 -07:00
ioctl.c
Compactifying bdev flags
2024-05-21 13:02:56 -07:00
ioprio.c
block: move __get_task_ioprio() into header file
2024-01-08 12:27:39 -07:00
Kconfig
blk-throttle: remove CONFIG_BLK_DEV_THROTTLING_LOW
2024-05-09 09:44:55 -06:00
Kconfig.iosched
block: Default to use cgroup support for BFQ
2023-01-30 09:42:42 -07:00
kyber-iosched.c
blk-mq: pass a flags argument to elevator_type->insert_requests
2023-04-13 06:52:30 -06:00
Makefile
block: Move zone related debugfs attribute to blk-zoned.c
2024-04-17 08:44:03 -06:00
mq-deadline.c
block/mq-deadline: Remove some unused functions
2024-04-19 08:10:36 -06:00
opal_proto.h
block: sed-opal: handle empty atoms when parsing response
2024-02-16 15:52:45 -07:00
sed-opal.c
block: sed-opal: avoid possible wrong address reference in read_sed_opal_key()
2024-06-12 10:53:20 -06:00
t10-pi.c
block: t10-pi: add MODULE_DESCRIPTION()
2024-05-20 08:07:44 -06:00