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WSL2-Linux-Kernel
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WSL2-Linux-Kernel/block
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Christoph Hellwig 7be5c25e31 block: fix error unwinding in device_add_disk 
[ Upstream commit 99d8690aae ]

One device_add is called disk->ev will be freed by disk_release, so we
should free it twice.  Fix this by allocating disk->ev after device_add
so that the extra local unwinding can be removed entirely.

Based on an earlier patch from Tetsuo Handa.

Reported-by: syzbot <syzbot+28a66a9fbc621c939000@syzkaller.appspotmail.com>
Tested-by: syzbot <syzbot+28a66a9fbc621c939000@syzkaller.appspotmail.com>
Fixes: 83cbce9574 ("block: add error handling for device_add_disk / add_disk")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20211221161851.788424-1-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2022-01-27 11:03:43 +01:00
..
partitions block: fix incorrect references to disk objects 2021-10-18 11:20:38 -06:00
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
Makefile block-5.15-2021-09-11 2021-09-11 10:19:51 -07:00
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: reset last_bfqq_created on group change 2021-10-17 07:03:02 -06:00
bfq-iosched.c bfq: Do not let waker requests skip proper accounting 2022-01-27 11:03:18 +01:00
bfq-iosched.h block, bfq: cleanup the repeated declaration 2021-08-25 06:45:33 -06:00
bfq-wf2q.c block: Introduce IOPRIO_NR_LEVELS 2021-08-18 07:21:12 -06:00
bio-integrity.c block: use bvec_virt in bio_integrity_{process,free} 2021-08-16 10:50:32 -06:00
bio.c block: don't call rq_qos_ops->done_bio if the bio isn't tracked 2021-09-24 11:04:39 -06:00
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: fix missing put device in error path from blkg_conf_pref() 2021-11-25 09:48:41 +01:00
blk-core.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-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 blk-mq: fix is_flush_rq 2021-08-17 20:17:34 -06:00
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 Merge branch 'akpm' (patches from Andrew) 2021-09-03 10:08:28 -07:00
blk-merge.c io_uring-bio-cache.5-2021-08-30 2021-08-30 19:30:30 -07:00
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 blk-mq-sched: Fix blk_mq_sched_alloc_tags() error handling 2021-07-27 16:44:38 -06:00
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: Fix a race in the runtime power management code 2020-12-09 11:41:41 -05:00
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 blk-mq: cancel blk-mq dispatch work in both blk_cleanup_queue and disk_release() 2021-12-01 09:04:56 +01:00
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: avoid to quiesce queue in elevator_init_mq 2021-12-01 09:04:56 +01:00
fops.c block: hold ->invalidate_lock in blkdev_fallocate 2021-09-24 11:06:58 -06:00
genhd.c block: fix error unwinding in device_add_disk 2022-01-27 11:03:43 +01:00
holder.c block: add back the bd_holder_dir reference in bd_link_disk_holder 2021-08-20 21:14:26 -06:00
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
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
mq-deadline.c block/mq-deadline: Move dd_queued() to fix defined but not used warning 2021-09-02 06:34:45 -06:00
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