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Christophe JAILLET 5b9ac3727e block: Fix the maximum minor value is blk_alloc_ext_minor() 
commit d1868328dec5ae2cf210111025fcbc71f78dd5ca upstream.

ida_alloc_range(..., min, max, ...) returns values from min to max,
inclusive.

So, NR_EXT_DEVT is a valid idx returned by blk_alloc_ext_minor().

This is an issue because in device_add_disk(), this value is used in:
   ddev->devt = MKDEV(disk->major, disk->first_minor);
and NR_EXT_DEVT is '(1 << MINORBITS)'.

So, should 'disk->first_minor' be NR_EXT_DEVT, it would overflow.

Fixes: 22ae8ce8b892 ("block: simplify bdev/disk lookup in blkdev_get")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/cc17199798312406b90834e433d2cefe8266823d.1648306232.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-04-08 14:24:11 +02:00
..
partitions
block: drop unused includes in <linux/genhd.h>
2022-03-16 14:23:46 +01:00
badblocks.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
bdev.c
block: genhd: fix double kfree() in __alloc_disk_node()
2021-10-02 07:29:20 -06:00
bfq-cgroup.c
block, bfq: don't move oom_bfqq
2022-04-08 14:23:55 +02:00
bfq-iosched.c
Revert "Revert "block, bfq: honor already-setup queue merges""
2022-04-08 14:23:56 +02:00
bfq-iosched.h
block, bfq: cleanup the repeated declaration
2021-08-25 06:45:33 -06:00
bfq-wf2q.c
block/bfq_wf2q: correct weight to ioprio
2022-04-08 14:23:55 +02:00
bio-integrity.c
block: bio-integrity: Advance seed correctly for larger interval sizes
2022-02-08 18:34:05 +01:00
bio.c
block: Fix wrong offset in bio_truncate()
2022-02-01 17:27:16 +01:00
blk-cgroup-rwstat.c
blk-cgroup: Fix the recursive blkg rwstat
2021-03-05 11:32:15 -07:00
blk-cgroup-rwstat.h
blk-cgroup: separate out blkg_rwstat under CONFIG_BLK_CGROUP_RWSTAT
2019-11-07 12:28:13 -07:00
blk-cgroup.c
blk-cgroup: set blkg iostat after percpu stat aggregation
2022-04-08 14:23:06 +02:00
blk-core.c
block: release rq qos structures for queue without disk
2022-03-23 09:16:41 +01:00
blk-crypto-fallback.c
block: rename BIO_MAX_PAGES to BIO_MAX_VECS
2021-03-11 07:47:48 -07:00
blk-crypto-internal.h
block: make blk_crypto_rq_bio_prep() able to fail
2020-10-05 10:47:43 -06:00
blk-crypto.c
blk-crypto: fix check for too-large dun_bytes
2021-08-25 06:45:00 -06:00
blk-exec.c
block: return errors from blk_execute_rq()
2021-06-30 15:35:45 -06:00
blk-flush.c
block: Fix fsync always failed if once failed
2022-01-27 11:05:25 +01:00
blk-integrity.c
block: flush the integrity workqueue in blk_integrity_unregister
2021-09-14 20:03:30 -06:00
blk-ioc.c
block: remove retry loop in ioc_release_fn()
2020-07-16 10:22:15 -06:00
blk-iocost.c
iocost: Fix divide-by-zero on donation from low hweight cgroup
2021-12-22 09:32:48 +01:00
blk-iolatency.c
for-5.15/block-2021-08-30
2021-08-30 18:52:11 -07:00
blk-ioprio.c
block: Introduce the ioprio rq-qos policy
2021-06-21 15:03:40 -06:00
blk-ioprio.h
block: Introduce the ioprio rq-qos policy
2021-06-21 15:03:40 -06:00
blk-lib.c
block: export blk_next_bio()
2021-06-17 15:51:20 +02:00
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
block: don't merge across cgroup boundaries if blkcg is enabled
2022-04-08 14:22:59 +02:00
blk-mq-cpumap.c
blk-mq: remove the calling of local_memory_node()
2020-10-20 07:08:17 -06:00
blk-mq-debugfs-zoned.c
block: Cleanup license notice
2019-01-17 21:21:40 -07:00
blk-mq-debugfs.c
block: decode QUEUE_FLAG_HCTX_ACTIVE in debugfs output
2021-10-04 06:58:39 -06:00
blk-mq-debugfs.h
blk-mq: no need to check return value of debugfs_create functions
2019-06-13 03:00:30 -06:00
blk-mq-pci.c
block: Fix blk_mq_*_map_queues() kernel-doc headers
2019-05-31 15:12:34 -06:00
blk-mq-rdma.c
block: Fix blk_mq_*_map_queues() kernel-doc headers
2019-05-31 15:12:34 -06:00
blk-mq-sched.c
block: limit request dispatch loop duration
2022-04-08 14:22:59 +02:00
blk-mq-sched.h
blk: Fix lock inversion between ioc lock and bfqd lock
2021-06-24 18:43:55 -06:00
blk-mq-sysfs.c
block: remove blk-mq-sysfs dead code
2021-08-02 13:37:29 -06:00
blk-mq-tag.c
blk-mq: avoid to iterate over stale request
2021-09-12 19:32:43 -06:00
blk-mq-tag.h
blk-mq: Some tag allocation code refactoring
2021-05-24 06:47:22 -06:00
blk-mq-virtio.c
blk-mq: Fix typo in comment
2020-03-17 20:55:21 +01:00
blk-mq.c
blk-mq: cancel blk-mq dispatch work in both blk_cleanup_queue and disk_release()
2021-12-01 09:04:56 +01:00
blk-mq.h
blk-mq: cancel blk-mq dispatch work in both blk_cleanup_queue and disk_release()
2021-12-01 09:04:56 +01:00
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
block: Remove unused blk_pm_*() function definitions
2021-02-22 06:33:48 -07:00
blk-rq-qos.c
rq-qos: fix missed wake-ups in rq_qos_throttle try two
2021-06-08 15:12:57 -06:00
blk-rq-qos.h
block: Introduce the ioprio rq-qos policy
2021-06-21 15:03:40 -06:00
blk-settings.c
block: Fix partition check for host-aware zoned block devices
2021-10-27 06:58:01 -06:00
blk-stat.c
blk-stat: make q->stats->lock irqsafe
2020-09-01 16:48:46 -06:00
blk-stat.h
block: deactivate blk_stat timer in wbt_disable_default()
2018-12-12 06:47:51 -07:00
blk-sysfs.c
block: don't delete queue kobject before its children
2022-04-08 14:23:07 +02:00
blk-throttle.c
blk-throttle: fix UAF by deleteing timer in blk_throtl_exit()
2021-09-07 08:36:56 -06:00
blk-timeout.c
block: blk-timeout: delete duplicated word
2020-07-31 16:29:47 -06:00
blk-wbt.c
blk-wbt: prevent NULL pointer dereference in wb_timer_fn
2021-11-18 19:16:34 +01:00
blk-wbt.h
blk-wbt: introduce a new disable state to prevent false positive by rwb_enabled()
2021-06-21 15:03:41 -06:00
blk-zoned.c
block: Hold invalidate_lock in BLKRESETZONE ioctl
2021-11-18 19:17:15 +01:00
blk.h
block: bump max plugged deferred size from 16 to 32
2021-11-18 19:16:16 +01:00
bounce.c
block: use memcpy_from_bvec in __blk_queue_bounce
2021-08-02 13:37:28 -06:00
bsg-lib.c
scsi: bsg-lib: Fix commands without data transfer in bsg_transport_sg_io_fn()
2021-08-01 13:21:40 -04:00
bsg.c
scsi: bsg: Fix device unregistration
2021-09-14 00:22:15 -04:00
disk-events.c
block: return errors from disk_alloc_events
2021-08-23 12:55:45 -06:00
elevator.c
block/wbt: fix negative inflight counter when remove scsi device
2022-02-23 12:03:15 +01:00
fops.c
block: hold ->invalidate_lock in blkdev_fallocate
2021-09-24 11:06:58 -06:00
genhd.c
block: Fix the maximum minor value is blk_alloc_ext_minor()
2022-04-08 14:24:11 +02:00
holder.c
block: drop unused includes in <linux/genhd.h>
2022-03-16 14:23:46 +01:00
ioctl.c
block: Hold invalidate_lock in BLKZEROOUT ioctl
2021-11-18 19:17:15 +01:00
ioprio.c
block: fix ioprio_get(IOPRIO_WHO_PGRP) vs setuid(2)
2021-12-14 10:57:16 +01:00
Kconfig
SCSI misc on 20210902
2021-09-02 15:09:46 -07:00
Kconfig.iosched
Revert "block/mq-deadline: Add cgroup support"
2021-08-11 13:47:26 -06:00
keyslot-manager.c
- Fix DM integrity's HMAC support to provide enhanced security of
2021-02-22 10:22:54 -08:00
kyber-iosched.c
kyber: avoid q->disk dereferences in trace points
2021-10-15 21:02:57 -06:00
Makefile
block-5.15-2021-09-11
2021-09-11 10:19:51 -07:00
mq-deadline.c
block: fix async_depth sysfs interface for mq-deadline
2022-01-27 11:05:25 +01:00
opal_proto.h
block: sed-opal: Change the check condition for regular session validity
2020-03-12 08:00:10 -06:00
sed-opal.c
block: sed-opal: Change the check condition for regular session validity
2020-03-12 08:00:10 -06:00
t10-pi.c
block: use bvec_kmap_local in t10_pi_type1_{prepare,complete}
2021-08-02 13:37:28 -06:00