WSL2-Linux-Kernel/block
Christoph Hellwig cf6b45ea7a 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: 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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-08-19 05:44:50 +02:00
..
partitions block: Move checking GENHD_FL_NO_PART to bdev_add_partition() 2024-02-23 08:54:35 +01:00
Kconfig
Kconfig.iosched
Makefile block: move CONFIG_BLOCK guard to top Makefile 2022-12-14 11:37:30 +01:00
badblocks.c
bdev.c block: move GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE to disk->event_flags 2023-09-19 12:23:02 +02:00
bfq-cgroup.c block, bfq: fix uaf for bfqq in bic_set_bfqq() 2023-02-09 11:26:36 +01:00
bfq-iosched.c block, bfq: fix uaf for bfqq in bic_set_bfqq() 2023-02-09 11:26:36 +01:00
bfq-iosched.h bfq: Get rid of __bio_blkcg() usage 2022-06-09 10:23:19 +02:00
bfq-wf2q.c block/bfq_wf2q: correct weight to ioprio 2022-04-08 14:23:55 +02:00
bio-integrity.c block: initialize integrity buffer to zero before writing it to media 2024-08-19 05:44:50 +02:00
bio.c block: prevent an integer overflow in bvec_try_merge_hw_page 2024-02-23 08:54:44 +01:00
blk-cgroup-rwstat.c
blk-cgroup-rwstat.h
blk-cgroup.c blk-cgroup: bypass blkcg_deactivate_policy after destroying 2023-12-20 15:17:39 +01:00
blk-core.c blk-core: use pr_warn_ratelimited() in bio_check_ro() 2023-11-20 11:08:29 +01:00
blk-crypto-fallback.c
blk-crypto-internal.h blk-mq: release crypto keyslot before reporting I/O complete 2023-05-11 23:00:16 +09:00
blk-crypto.c blk-crypto: make blk_crypto_evict_key() more robust 2023-05-11 23:00:16 +09:00
blk-exec.c
blk-flush.c block: Fix fsync always failed if once failed 2022-01-27 11:05:25 +01:00
blk-integrity.c
blk-ioc.c block: fix default IO priority handling again 2022-08-11 13:07:50 +02:00
blk-iocost.c blk-iocost: avoid out of bounds shift 2024-05-17 11:50:54 +02:00
blk-iolatency.c block: don't allow the same type rq_qos add more than once 2022-08-17 14:24:24 +02:00
blk-ioprio.c
blk-ioprio.h
blk-lib.c
blk-map.c block-map: add __GFP_ZERO flag for alloc_page in function bio_copy_kern 2022-03-08 19:12:31 +01:00
blk-merge.c blk-mq: release crypto keyslot before reporting I/O complete 2023-05-11 23:00:16 +09:00
blk-mq-cpumap.c
blk-mq-debugfs-zoned.c
blk-mq-debugfs.c blk-mq: don't create hctx debugfs dir until q->debugfs_dir is created 2022-08-17 14:23:12 +02:00
blk-mq-debugfs.h
blk-mq-pci.c
blk-mq-rdma.c
blk-mq-sched.c blk-mq: correct stale comment of .get_budget 2023-03-10 09:39:04 +01:00
blk-mq-sched.h
blk-mq-sysfs.c blk-mq: fix possible memleak when register 'hctx' failed 2022-12-31 13:14:43 +01:00
blk-mq-tag.c
blk-mq-tag.h
blk-mq-virtio.c
blk-mq.c blk-mq: fix IO hang from sbitmap wakeup race 2024-02-23 08:54:52 +01:00
blk-mq.h
blk-pm.c scsi: block: pm: Always set request queue runtime active in blk_post_runtime_resume() 2022-01-27 11:04:15 +01:00
blk-pm.h
blk-rq-qos.c
blk-rq-qos.h block: don't allow the same type rq_qos add more than once 2022-08-17 14:24:24 +02:00
blk-settings.c block: Clear zone limits for a non-zoned stacked queue 2024-04-10 16:18:35 +02:00
blk-stat.c block: prevent division by zero in blk_rq_stat_sum() 2024-04-13 13:01:45 +02:00
blk-stat.h
blk-sysfs.c block: fix use-after-free of q->q_usage_counter 2023-10-10 21:59:05 +02:00
blk-throttle.c blk-throttle: fix lockdep warning of "cgroup_mutex or RCU read lock required!" 2023-12-20 15:17:39 +01:00
blk-timeout.c
blk-wbt.c blk-wbt: fix that 'rwb->wc' is always set to 1 in wbt_init() 2022-10-26 12:35:54 +02:00
blk-wbt.h
blk-zoned.c
blk.h
bounce.c
bsg-lib.c
bsg.c
disk-events.c block: increment diskseq on all media change events 2023-07-23 13:47:20 +02:00
elevator.c block/wbt: fix negative inflight counter when remove scsi device 2022-02-23 12:03:15 +01:00
fops.c block: Don't invalidate pagecache for invalid falloc modes 2024-01-15 18:51:07 +01:00
genhd.c block: add check of 'minors' and 'first_minor' in device_add_disk() 2024-01-25 14:52:39 -08:00
holder.c block: drop unused includes in <linux/genhd.h> 2022-03-16 14:23:46 +01:00
ioctl.c block/ioctl: prefer different overflow check 2024-07-05 09:14:25 +02:00
ioprio.c block: fix default IO priority handling again 2022-08-11 13:07:50 +02:00
keyslot-manager.c blk-crypto: make blk_crypto_evict_key() more robust 2023-05-11 23:00:16 +09:00
kyber-iosched.c
mq-deadline.c block: mq-deadline: Rename deadline_is_seq_writes() 2023-01-24 07:22:49 +01:00
opal_proto.h block: sed-opal: handle empty atoms when parsing response 2024-03-26 18:21:13 -04:00
sed-opal.c block: sed-opal: handle empty atoms when parsing response 2024-03-26 18:21:13 -04:00
t10-pi.c