sst-linux/block
Riyan Dhiman 64cf2a3920 block: fix potential invalid pointer dereference in blk_add_partition
[ Upstream commit 26e197b7f9240a4ac301dd0ad520c0c697c2ea7d ]

The blk_add_partition() function initially used a single if-condition
(IS_ERR(part)) to check for errors when adding a partition. This was
modified to handle the specific case of -ENXIO separately, allowing the
function to proceed without logging the error in this case. However,
this change unintentionally left a path where md_autodetect_dev()
could be called without confirming that part is a valid pointer.

This commit separates the error handling logic by splitting the
initial if-condition, improving code readability and handling specific
error scenarios explicitly. The function now distinguishes the general
error case from -ENXIO without altering the existing behavior of
md_autodetect_dev() calls.

Fixes: b72053072c (block: allow partitions on host aware zone devices)
Signed-off-by: Riyan Dhiman <riyandhiman14@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20240911132954.5874-1-riyandhiman14@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-10-17 15:20:45 +02:00
..
partitions block: fix potential invalid pointer dereference in blk_add_partition 2024-10-17 15:20:45 +02:00
badblocks.c
bdev.c
bfq-cgroup.c
bfq-iosched.c block, bfq: don't break merge chain in bfq_split_bfqq() 2024-10-17 15:20:44 +02:00
bfq-iosched.h
bfq-wf2q.c
bio-integrity.c block: initialize integrity buffer to zero before writing it to media 2024-08-03 08:48:53 +02:00
bio.c
blk-cgroup-fc-appid.c
blk-cgroup-rwstat.c
blk-cgroup-rwstat.h
blk-cgroup.c
blk-cgroup.h
blk-core.c block: Fix where bio IO priority gets set 2024-09-30 16:23:50 +02:00
blk-crypto-fallback.c
blk-crypto-internal.h
blk-crypto-profile.c
blk-crypto-sysfs.c
blk-crypto.c
blk-flush.c
blk-ia-ranges.c
blk-integrity.c block: remove the blk_flush_integrity call in blk_integrity_unregister 2024-09-08 07:53:11 +02:00
blk-ioc.c
blk-iocost.c blk-iocost: avoid out of bounds shift 2024-05-17 11:56:07 +02:00
blk-iolatency.c
blk-ioprio.c
blk-ioprio.h
blk-lib.c
blk-map.c
blk-merge.c block: support to account io_ticks precisely 2024-06-12 11:03:07 +02:00
blk-mq-cpumap.c
blk-mq-debugfs-zoned.c
blk-mq-debugfs.c
blk-mq-debugfs.h
blk-mq-pci.c
blk-mq-rdma.c
blk-mq-sched.c
blk-mq-sched.h
blk-mq-sysfs.c
blk-mq-tag.c block: Fix lockdep warning in blk_mq_mark_tag_wait 2024-08-29 17:30:33 +02:00
blk-mq-tag.h
blk-mq-virtio.c
blk-mq.c block: Fix where bio IO priority gets set 2024-09-30 16:23:50 +02:00
blk-mq.h
blk-pm.c
blk-pm.h
blk-rq-qos.c
blk-rq-qos.h
blk-settings.c
blk-stat.c
blk-stat.h
blk-sysfs.c
blk-throttle.c
blk-throttle.h
blk-timeout.c
blk-wbt.c
blk-wbt.h
blk-zoned.c
blk.h block: support to account io_ticks precisely 2024-06-12 11:03:07 +02:00
bounce.c
bsg-lib.c
bsg.c
disk-events.c
elevator.c
elevator.h
fops.c
genhd.c block: support to account io_ticks precisely 2024-06-12 11:03:07 +02:00
holder.c
ioctl.c block/ioctl: prefer different overflow check 2024-06-27 13:46:15 +02:00
ioprio.c
Kconfig
Kconfig.iosched
kyber-iosched.c
Makefile
mq-deadline.c block/mq-deadline: Fix the tag reservation code 2024-08-14 13:53:02 +02:00
opal_proto.h
sed-opal.c
t10-pi.c