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

commit d1868328de 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: 22ae8ce8b8 ("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

…

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-rwstat.h

…

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

…

blk-crypto-internal.h

…

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

…

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

Merge tag 'for-5.15/block-2021-08-30' of git://git.kernel.dk/linux-block

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-debugfs-zoned.c

…

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-pci.c

…

blk-mq-rdma.c

…

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-virtio.c

…

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

…

blk-rq-qos.c

…

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.h

…

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

…

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

Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

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

…

kyber-iosched.c

kyber: avoid q->disk dereferences in trace points

2021-10-15 21:02:57 -06:00

Makefile

Merge tag 'block-5.15-2021-09-11' of git://git.kernel.dk/linux-block

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

…

sed-opal.c

…

t10-pi.c

block: use bvec_kmap_local in t10_pi_type1_{prepare,complete}

2021-08-02 13:37:28 -06:00