linux/block
Christoph Hellwig 899ee2c382 block: initialize integrity buffer to zero before writing it to media
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: 7ba1ba12ee ("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>
2024-06-14 10:20:06 -06:00
..
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
bfq-wf2q.c
bio-integrity.c block: initialize integrity buffer to zero before writing it to media 2024-06-14 10:20:06 -06:00
bio.c for-6.10-tag 2024-05-14 17:25:36 -07:00
blk-cgroup-fc-appid.c
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
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-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
blk-crypto.c
blk-flush.c block: Fix flush request sector restore 2024-05-01 08:08:43 -06:00
blk-ia-ranges.c
blk-integrity.c block: support PI at non-zero offset within metadata 2024-02-12 08:49:31 -07:00
blk-ioc.c
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.h
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-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-sched.c blk-mq: Remove the hctx 'run' debugfs attribute 2024-01-17 14:16:34 -07:00
blk-mq-sched.h
blk-mq-sysfs.c
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.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
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: add special APIs for run-time disabling of discard and friends 2024-06-14 10:19:44 -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: Fix zone write plugging handling of devices with a runt zone 2024-05-30 15:03:52 -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
kyber-iosched.c
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 for-6.9/block-20240310 2024-03-11 11:43:44 -07:00
t10-pi.c block: t10-pi: add MODULE_DESCRIPTION() 2024-05-20 08:07:44 -06:00