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Christoph Hellwig 9e8e62c4a8 block: initialize integrity buffer to zero before writing it to media 
commit 899ee2c3829c5ac14bfc7d3c4a5846c0b709b78f upstream.

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: Shivani Agarwal <shivani.agarwal@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-11-23 23:20:59 +01:00
..
partitions Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
badblocks.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
bfq-cgroup.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
bfq-iosched.c block, bfq: use half slice_idle as a threshold to check short ttime 2024-11-19 17:43:46 +01:00
bfq-iosched.h block, bfq: save also injection state on queue merging 2024-11-19 17:43:15 +01:00
bfq-wf2q.c block, bfq: always inject I/O of queues blocked by wakers 2024-11-19 17:41:42 +01:00
bio-integrity.c block: initialize integrity buffer to zero before writing it to media 2024-11-23 23:20:59 +01:00
bio.c block: prevent an integer overflow in bvec_try_merge_hw_page 2024-11-18 12:13:14 +01:00
blk-cgroup-rwstat.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-cgroup-rwstat.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-cgroup.c cgroup: rstat: punt root-level optimization to individual controllers 2024-11-19 17:40:21 +01:00
blk-core.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-crypto-fallback.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-crypto-internal.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-crypto.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-exec.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-flush.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-integrity.c block: remove the blk_flush_integrity call in blk_integrity_unregister 2024-11-23 23:20:58 +01:00
blk-ioc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-iocost.c blk-iocost: avoid out of bounds shift 2024-11-19 11:32:44 +01:00
blk-iolatency.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-ioprio.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-ioprio.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-lib.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-map.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-merge.c blk: Fix lock inversion between ioc lock and bfqd lock 2024-11-19 17:40:26 +01:00
blk-mq-cpumap.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-mq-debugfs-zoned.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-mq-debugfs.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-mq-debugfs.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-mq-pci.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-mq-rdma.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-mq-sched.c blk: Fix lock inversion between ioc lock and bfqd lock 2024-11-19 17:40:26 +01:00
blk-mq-sched.h blk: Fix lock inversion between ioc lock and bfqd lock 2024-11-19 17:40:26 +01:00
blk-mq-sysfs.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-mq-tag.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-mq-tag.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-mq-virtio.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-mq.c blk-mq: fix IO hang from sbitmap wakeup race 2024-11-18 12:13:20 +01:00
blk-mq.h blk: Fix lock inversion between ioc lock and bfqd lock 2024-11-19 17:40:26 +01:00
blk-pm.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-pm.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-rq-qos.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-rq-qos.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-sec-stats.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-settings.c block: Clear zone limits for a non-zoned stacked queue 2024-11-19 09:22:16 +01:00
blk-stat.c block: prevent division by zero in blk_rq_stat_sum() 2024-11-19 09:23:14 +01:00
blk-stat.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-sysfs.c Revert "mm: apply init protection" 2024-11-19 18:15:13 +01:00
blk-throttle.c blk-throttle: fix lockdep warning of "cgroup_mutex or RCU read lock required!" 2024-11-18 12:11:56 +01:00
blk-timeout.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-wbt.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-wbt.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk-zoned.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
blk.h blk: Fix lock inversion between ioc lock and bfqd lock 2024-11-19 17:40:26 +01:00
bounce.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
bsg-lib.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
bsg.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
cmdline-parser.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
elevator.c block: Add default I/O scheduler option 2024-11-19 17:43:55 +01:00
genhd.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ioctl.c block/ioctl: prefer different overflow check 2024-11-19 14:19:06 +01:00
ioprio.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Kconfig Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Kconfig.iosched block: Add default I/O scheduler option 2024-11-19 17:43:55 +01:00
keyslot-manager.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
kyber-iosched.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Makefile Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mq-deadline-cgroup.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mq-deadline-cgroup.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mq-deadline-main.c blk: Fix lock inversion between ioc lock and bfqd lock 2024-11-19 17:40:26 +01:00
opal_proto.h block: sed-opal: handle empty atoms when parsing response 2024-11-19 08:44:36 +01:00
scsi_ioctl.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sed-opal.c block: sed-opal: handle empty atoms when parsing response 2024-11-19 08:44:36 +01:00
ssg-cgroup.c ssg: Set max available ratio to 25 2024-11-17 17:41:50 +01:00
ssg-cgroup.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ssg-iosched.c block: ssg-iosched: adapt to new patches 2024-11-19 17:40:09 +01:00
t10-pi.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00