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Yu Kuai 985958b858 block: fix wrong mode for blkdev_get_by_dev() from disk_scan_partitions() 
After commit 2736e8eeb0cc ("block: use the holder as indication for
exclusive opens"), blkdev_get_by_dev() will warn if holder is NULL and
mode contains 'FMODE_EXCL'.

holder from blkdev_get_by_dev() from disk_scan_partitions() is always NULL,
hence it should not use 'FMODE_EXCL', which is broben by the commit. For
consequence, WARN_ON_ONCE() will be triggered from blkdev_get_by_dev()
if user scan partitions with device opened exclusively.

Fix this problem by removing 'FMODE_EXCL' from disk_scan_partitions(),
as it used to be.

Reported-by: syzbot+00cd27751f78817f167b@syzkaller.appspotmail.com
Link: https://syzkaller.appspot.com/bug?extid=00cd27751f78817f167b
Fixes: 2736e8eeb0cc ("block: use the holder as indication for exclusive opens")
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20230618140402.7556-1-yukuai1@huaweicloud.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2023-06-20 07:17:46 -06:00
..
partitions
block: remove blk_drop_partitions
2023-06-05 10:53:04 -06:00
badblocks.c
block/badblocks: Remove redundant assignments
2022-04-23 07:15:26 -06:00
bdev.c
block: document the holder argument to blkdev_get_by_path
2023-06-20 07:16:38 -06:00
bfq-cgroup.c
blkcg: Restructure blkg_conf_prep() and friends
2023-04-13 06:46:49 -06:00
bfq-iosched.c
block: BFQ: Move an invariant check
2023-05-19 19:59:52 -06:00
bfq-iosched.h
block, bfq: remove BFQ_WEIGHT_LEGACY_DFL
2023-04-06 16:17:32 -06:00
bfq-wf2q.c
block, bfq: inject I/O to underutilized actuators
2023-01-29 15:18:33 -07:00
bio-integrity.c
block: bio-integrity: Copy flags when bio_integrity_payload is cloned
2023-02-16 11:05:41 -07:00
bio.c
block: add bio_add_folio_nofail
2023-06-01 09:13:31 -06:00
blk-cgroup-fc-appid.c
block: Replace all non-returning strlcpy with strscpy
2023-06-01 09:13:31 -06:00
blk-cgroup-rwstat.c
Revert "blk-cgroup: pin the gendisk in struct blkcg_gq"
2023-02-14 14:24:09 -07:00
blk-cgroup-rwstat.h
block: Use the new blk_opf_t type
2022-07-14 12:14:30 -06:00
blk-cgroup.c
blk-cgroup: Reinit blkg_iostat_set after clearing in blkcg_reset_stats()
2023-06-07 07:51:34 -06:00
blk-cgroup.h
for-6.4/block-2023-04-21
2023-04-26 12:52:58 -07:00
blk-core.c
block/rq_qos: protect rq_qos apis with a new lock
2023-05-23 11:13:19 -06:00
blk-crypto-fallback.c
treewide: use get_random_bytes() when possible
2022-10-11 17:42:58 -06:00
blk-crypto-internal.h
blk-crypto: remove blk_crypto_insert_cloned_request()
2023-03-16 09:35:09 -06:00
blk-crypto-profile.c
blk-crypto: drop the NULL check from blk_crypto_put_keyslot()
2023-03-16 09:35:09 -06:00
blk-crypto-sysfs.c
block: make kobj_type structures constant
2023-02-09 09:38:16 -07:00
blk-crypto.c
blk-crypto: make blk_crypto_evict_key() more robust
2023-03-16 09:35:09 -06:00
blk-flush.c
blk-mq: don't use the requeue list to queue flush commands
2023-05-19 19:52:42 -06:00
blk-ia-ranges.c
block: make kobj_type structures constant
2023-02-09 09:38:16 -07:00
blk-integrity.c
blk-integrity: register sysfs attributes on struct device
2023-04-26 18:22:50 -06:00
blk-ioc.c
blk-ioc: fix recursive spin_lock/unlock_irq() in ioc_clear_queue()
2023-06-07 07:51:00 -06:00
blk-iocost.c
blk-iocost: use spin_lock_irqsave in adjust_inuse_and_calc_cost
2023-06-05 12:08:32 -06:00
blk-iolatency.c
blk-iolatency: Make initialization lazy
2023-04-13 06:46:49 -06:00
blk-ioprio.c
blk-ioprio: Introduce promote-to-rt policy
2023-06-06 22:26:26 -06:00
blk-ioprio.h
blk-ioprio: pass a gendisk to blk_ioprio_init and blk_ioprio_exit
2022-09-26 19:09:31 -06:00
blk-lib.c
blk-lib: fix blkdev_issue_secure_erase
2022-09-15 00:25:17 -06:00
blk-map.c
block: convert bio_map_user_iov to use iov_iter_extract_pages
2023-05-24 08:42:44 -06:00
blk-merge.c
blk-mq: release crypto keyslot before reporting I/O complete
2023-03-16 09:35:09 -06:00
blk-mq-cpumap.c
blk-mq: include <linux/blk-mq.h> in block/blk-mq.h
2023-04-13 06:52:29 -06:00
blk-mq-debugfs-zoned.c
block: move zone related fields to struct gendisk
2022-07-06 06:46:26 -06:00
blk-mq-debugfs.c
blk-mq: fix potential io hang by wrong 'wake_batch'
2023-06-12 09:55:53 -06:00
blk-mq-debugfs.h
block: remove per-disk debugfs files in blk_unregister_queue
2022-06-17 07:31:05 -06:00
blk-mq-pci.c
blk-mq: include <linux/blk-mq.h> in block/blk-mq.h
2023-04-13 06:52:29 -06:00
blk-mq-sched.c
blk-mq: cleanup __blk_mq_sched_dispatch_requests
2023-04-13 06:57:18 -06:00
blk-mq-sched.h
blk-mq: make sure elevator callbacks aren't called for passthrough request
2023-05-18 19:42:54 -06:00
blk-mq-sysfs.c
blk-mq: include <linux/blk-mq.h> in block/blk-mq.h
2023-04-13 06:52:29 -06:00
blk-mq-tag.c
blk-mq: fix potential io hang by wrong 'wake_batch'
2023-06-12 09:55:53 -06:00
blk-mq-virtio.c
blk-mq: include <linux/blk-mq.h> in block/blk-mq.h
2023-04-13 06:52:29 -06:00
blk-mq.c
blk-mq: fix NULL dereference on q->elevator in blk_mq_elv_switch_none
2023-06-16 10:12:25 -06:00
blk-mq.h
blk-mq: fix potential io hang by wrong 'wake_batch'
2023-06-12 09:55:53 -06:00
blk-pm.c
blk-mq: include <linux/blk-mq.h> in block/blk-mq.h
2023-04-13 06:52:29 -06:00
blk-pm.h
block: Remove unused blk_pm_*() function definitions
2021-02-22 06:33:48 -07:00
blk-rq-qos.c
block/rq_qos: protect rq_qos apis with a new lock
2023-05-23 11:13:19 -06:00
blk-rq-qos.h
blk-iolatency: s/blkcg_rq_qos/iolat_rq_qos/
2023-04-13 06:46:49 -06:00
blk-settings.c
blk-wbt: move private information from blk-wbt.h to blk-wbt.c
2023-02-03 08:20:05 -07:00
blk-stat.c
blk-mq: include <linux/blk-mq.h> in block/blk-mq.h
2023-04-13 06:52:29 -06:00
blk-stat.h
block: make queue stat accounting a reference
2021-12-14 17:23:05 -07:00
blk-sysfs.c
blk-mq: include <linux/blk-mq.h> in block/blk-mq.h
2023-04-13 06:52:29 -06:00
blk-throttle.c
blk-throttle: only enable blk-stat when BLK_DEV_THROTTLING_LOW
2023-04-13 06:48:11 -06:00
blk-throttle.h
blk-throttle: pass a gendisk to blk_throtl_cancel_bios
2022-09-26 19:17:28 -06:00
blk-timeout.c
block: blk-timeout: delete duplicated word
2020-07-31 16:29:47 -06:00
blk-wbt.c
block/rq_qos: protect rq_qos apis with a new lock
2023-05-23 11:13:19 -06:00
blk-wbt.h
blk-wbt: move private information from blk-wbt.h to blk-wbt.c
2023-02-03 08:20:05 -07:00
blk-zoned.c
block: replace fmode_t with a block-specific type for block open flags
2023-06-12 08:04:05 -06:00
blk.h
block: remove BIO_PAGE_REFFED
2023-06-16 10:08:09 -06:00
bounce.c
block: change the blk_queue_bounce calling convention
2022-08-02 17:22:54 -06:00
bsg-lib.c
scsi: replace the fmode_t argument to ->sg_io_fn with a simple bool
2023-06-12 08:04:04 -06:00
bsg.c
scsi: replace the fmode_t argument to ->sg_io_fn with a simple bool
2023-06-12 08:04:04 -06:00
disk-events.c
block: increment diskseq on all media change events
2023-06-20 07:16:24 -06:00
early-lookup.c
block: fix rootwait= again
2023-06-09 11:38:10 -06:00
elevator.c
block: Replace all non-returning strlcpy with strscpy
2023-06-01 09:13:31 -06:00
elevator.h
blk-mq: pass a flags argument to elevator_type->insert_requests
2023-04-13 06:52:30 -06:00
fops.c
block: store the holder in file->private_data
2023-06-12 08:04:05 -06:00
genhd.c
block: fix wrong mode for blkdev_get_by_dev() from disk_scan_partitions()
2023-06-20 07:17:46 -06:00
holder.c
block: don't allow a disk link holder to itself
2022-11-16 15:19:56 -07:00
ioctl.c
block: replace fmode_t with a block-specific type for block open flags
2023-06-12 08:04:05 -06:00
ioprio.c
block: Fix handling of tasks without ioprio in ioprio_get(2)
2022-06-27 06:29:12 -06:00
Kconfig
for-6.4/block-2023-04-21
2023-04-26 12:52:58 -07:00
Kconfig.iosched
block: Default to use cgroup support for BFQ
2023-01-30 09:42:42 -07:00
kyber-iosched.c
blk-mq: pass a flags argument to elevator_type->insert_requests
2023-04-13 06:52:30 -06:00
Makefile
block: move the code to do early boot lookup of block devices to block/
2023-06-05 10:57:40 -06:00
mq-deadline.c
block: mq-deadline: Fix handling of at-head zoned writes
2023-05-18 19:47:49 -06:00
opal_proto.h
sed-opal: allow user authority to get locking range attributes.
2023-04-05 07:46:25 -06:00
sed-opal.c
sed-opal: geometry feature reporting command
2023-04-19 14:07:13 -06:00
t10-pi.c
block: add pi for extended integrity
2022-03-07 12:48:35 -07:00