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TencentOS-kernel/drivers/md
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Mikulas Patocka 2d082a94fb dm ioctl: fix out of bounds array access when no devices 
commit 4edbe1d7bcffcd6269f3b5eb63f710393ff2ec7a upstream.

If there are not any dm devices, we need to zero the "dev" argument in
the first structure dm_name_list. However, this can cause out of
bounds write, because the "needed" variable is zero and len may be
less than eight.

Fix this bug by reporting DM_BUFFER_FULL_FLAG if the result buffer is
too small to hold the "nl->dev" value.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2021-04-12 12:53:26 +08:00
..
bcache bcache: Move journal work to new flush wq 2021-04-12 12:52:34 +08:00
persistent-data dm thin metadata: Fix use-after-free in dm_bm_set_read_only 2021-03-16 16:35:44 +08:00
Kconfig dm integrity: select CRYPTO_SKCIPHER 2021-04-12 12:51:33 +08:00
Makefile Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-bio-prison-v1.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-bio-prison-v1.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-bio-prison-v2.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-bio-prison-v2.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-bio-record.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-bufio.c dm bufio: subtract the number of initial sectors in dm_bufio_get_device_size 2021-04-12 12:52:51 +08:00
dm-builtin.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-cache-background-tracker.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-cache-background-tracker.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-cache-block-types.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-cache-metadata.c dm cache metadata: Avoid returning cmd->bm wild pointer on error 2021-03-16 16:35:43 +08:00
dm-cache-metadata.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-cache-policy-internal.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-cache-policy-smq.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-cache-policy.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-cache-policy.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-cache-target.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-clone-metadata.c dm clone: Fix handling of partial region discards 2021-03-16 16:26:18 +08:00
dm-clone-metadata.h dm clone: replace spin_lock_irqsave with spin_lock_irq 2021-03-16 16:26:17 +08:00
dm-clone-target.c dm clone: Add missing casts to prevent overflows and data corruption 2021-03-16 16:26:18 +08:00
dm-core.h dm: fix deadlock when swapping to encrypted device 2021-04-12 12:52:40 +08:00
dm-crypt.c dm: fix deadlock when swapping to encrypted device 2021-04-12 12:52:40 +08:00
dm-delay.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-dust.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-era-target.c dm era: Update in-core bitset after committing the metadata 2021-04-12 12:52:42 +08:00
dm-exception-store.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-exception-store.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-flakey.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-init.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-integrity.c dm integrity: conditionally disable "recalculate" feature 2021-04-12 12:51:42 +08:00
dm-io.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-ioctl.c dm ioctl: fix out of bounds array access when no devices 2021-04-12 12:53:26 +08:00
dm-kcopyd.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-linear.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-log-userspace-base.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-log-userspace-transfer.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-log-userspace-transfer.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-log-writes.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-log.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-mpath.c dm mpath: fix racey management of PG initialization 2021-03-16 16:35:43 +08:00
dm-mpath.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-path-selector.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-path-selector.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-queue-length.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-raid.c dm raid: fix discard limits for raid1 2021-04-12 12:51:22 +08:00
dm-raid1.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-region-hash.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-round-robin.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-rq.c dm rq: don't call blk_mq_queue_stopped() in dm_stop_queue() 2021-03-16 16:34:15 +08:00
dm-rq.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-service-time.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-snap-persistent.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-snap-transient.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-snap.c dm snapshot: flush merged data before committing metadata 2021-04-12 12:51:22 +08:00
dm-stats.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-stats.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-stripe.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-switch.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-sysfs.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-table.c dm table: fix zoned iterate_devices based device capability checks 2021-04-12 12:52:53 +08:00
dm-target.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-thin-metadata.c dm thin metadata: Fix use-after-free in dm_bm_set_read_only 2021-03-16 16:35:44 +08:00
dm-thin-metadata.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-thin.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-uevent.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-uevent.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-unstripe.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-verity-fec.c dm verity: fix FEC for RS roots unaligned to block size 2021-04-12 12:52:51 +08:00
dm-verity-fec.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-verity-target.c dm verity: fix DM_VERITY_OPTS_MAX value 2021-04-12 12:53:26 +08:00
dm-verity-verify-sig.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-verity-verify-sig.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-verity.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-writecache.c dm writecache: fix writing beyond end of underlying device when shrinking 2021-04-12 12:52:41 +08:00
dm-zero.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm-zoned-metadata.c dm zoned: return NULL if dmz_get_zone_for_reclaim() fails to find a zone 2021-03-16 16:30:21 +08:00
dm-zoned-reclaim.c dm zoned: return NULL if dmz_get_zone_for_reclaim() fails to find a zone 2021-03-16 16:30:21 +08:00
dm-zoned-target.c dm zoned: assign max_io_len correctly 2021-03-16 16:31:23 +08:00
dm-zoned.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
dm.c dm table: fix DAX iterate_devices based device capability checks 2021-04-12 12:52:53 +08:00
dm.h dm table: fix DAX iterate_devices based device capability checks 2021-04-12 12:52:53 +08:00
md-bitmap.c md/bitmap: md_bitmap_get_counter returns wrong blocks 2021-03-16 16:39:50 +08:00
md-bitmap.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
md-cluster.c md/cluster: fix deadlock when node is doing resync job 2021-03-16 16:43:44 +08:00
md-cluster.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
md-faulty.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
md-linear.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
md-linear.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
md-multipath.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
md-multipath.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
md.c md: Set prev_flush_start and flush_bio in an atomic way 2021-04-12 12:51:57 +08:00
md.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
raid0.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
raid0.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
raid1-10.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
raid1.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
raid1.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
raid5-cache.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
raid5-log.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
raid5-ppl.c Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
raid5.c md/raid5: fix oops during stripe resizing 2021-03-16 16:39:54 +08:00
raid5.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
raid10.c md/raid10: initialize r10_bio->read_slot before use. 2021-03-16 16:43:48 +08:00
raid10.h Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00