Ye Bin 02bc8bc6ea blk-mq: fix possible memleak when register 'hctx' failed ... [ Upstream commit 4b7a21c57b14fbcd0e1729150189e5933f5088e9 ] There's issue as follows when do fault injection test: unreferenced object 0xffff888132a9f400 (size 512): comm "insmod", pid 308021, jiffies 4324277909 (age 509.733s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 08 f4 a9 32 81 88 ff ff ...........2.... 08 f4 a9 32 81 88 ff ff 00 00 00 00 00 00 00 00 ...2............ backtrace: [<00000000e8952bb4>] kmalloc_node_trace+0x22/0xa0 [<00000000f9980e0f>] blk_mq_alloc_and_init_hctx+0x3f1/0x7e0 [<000000002e719efa>] blk_mq_realloc_hw_ctxs+0x1e6/0x230 [<000000004f1fda40>] blk_mq_init_allocated_queue+0x27e/0x910 [<00000000287123ec>] __blk_mq_alloc_disk+0x67/0xf0 [<00000000a2a34657>] 0xffffffffa2ad310f [<00000000b173f718>] 0xffffffffa2af824a [<0000000095a1dabb>] do_one_initcall+0x87/0x2a0 [<00000000f32fdf93>] do_init_module+0xdf/0x320 [<00000000cbe8541e>] load_module+0x3006/0x3390 [<0000000069ed1bdb>] __do_sys_finit_module+0x113/0x1b0 [<00000000a1a29ae8>] do_syscall_64+0x35/0x80 [<000000009cd878b0>] entry_SYSCALL_64_after_hwframe+0x46/0xb0 Fault injection context as follows: kobject_add blk_mq_register_hctx blk_mq_sysfs_register blk_register_queue device_add_disk null_add_dev.part.0 [null_blk] As 'blk_mq_register_hctx' may already add some objects when failed halfway, but there isn't do fallback, caller don't know which objects add failed. To solve above issue just do fallback when add objects failed halfway in 'blk_mq_register_hctx'. Signed-off-by: Ye Bin <yebin10@huawei.com> Reviewed-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20221117022940.873959-1-yebin@huaweicloud.com Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-01-18 11:30:37 +01:00
..
partitions
badblocks.c
bfq-cgroup.c	block, bfq: fix overwrite of bfq_group pointer in bfq_find_set_group()	2020-03-25 08:06:08 +01:00
bfq-iosched.c	block, bfq: protect 'bfqd->queued' by 'bfqd->lock'	2022-11-10 17:46:54 +01:00
bfq-iosched.h	block, bfq: fix use after free in bfq_bfqq_expire	2021-12-29 12:20:43 +01:00
bfq-wf2q.c	block, bfq: fix use after free in bfq_bfqq_expire	2021-12-29 12:20:43 +01:00
bio-integrity.c	block: bio-integrity: Advance seed correctly for larger interval sizes	2022-02-08 18:23:14 +01:00
bio.c	block-map: add __GFP_ZERO flag for alloc_page in function bio_copy_kern	2022-06-06 08:24:21 +02:00
blk-cgroup.c	bdi: use bdi_dev_name() to get device name	2021-08-08 08:54:29 +02:00
blk-core.c	block: split .sysfs_lock into two locks	2021-03-04 09:39:30 +01:00
blk-exec.c
blk-flush.c	block: Fix fsync always failed if once failed	2022-03-08 19:04:08 +01:00
blk-integrity.c
blk-ioc.c	block: Fix use-after-free issue accessing struct io_cq	2020-04-17 10:48:41 +02:00
blk-iolatency.c	blk-iolatency: Fix inflight count imbalances and IO hangs on offline	2022-06-14 16:59:30 +02:00
blk-lib.c	block: fix 32 bit overflow in __blkdev_issue_discard()	2020-02-01 09:37:12 +00:00
blk-map.c	block: fix memleak when __blk_rq_map_user_iov() is failed	2020-01-12 12:17:22 +01:00
blk-merge.c	block: don't merge across cgroup boundaries if blkcg is enabled	2022-04-15 14:14:41 +02:00
blk-mq-cpumap.c
blk-mq-debugfs-zoned.c
blk-mq-debugfs.c	block, scsi: Change the preempt-only flag into a counter	2019-08-04 09:30:57 +02:00
blk-mq-debugfs.h
blk-mq-pci.c
blk-mq-rdma.c
blk-mq-sched.c	blk-mq: order adding requests to hctx->dispatch and checking SCHED_RESTART	2020-09-03 11:24:26 +02:00
blk-mq-sched.h	block: mq-deadline: Fix write completion handling	2019-01-13 09:51:07 +01:00
blk-mq-sysfs.c	blk-mq: fix possible memleak when register 'hctx' failed	2023-01-18 11:30:37 +01:00
blk-mq-tag.c
blk-mq-tag.h
blk-mq-virtio.c
blk-mq.c	blk-mq: Swap two calls in blk_mq_exit_queue()	2021-05-22 10:59:46 +02:00
blk-mq.h	blk-mq: free hw queue's resource in hctx's release handler	2019-09-16 08:22:13 +02:00
blk-rq-qos.c	blk-wbt: fix performance regression in wbt scale_up/scale_down	2019-10-17 13:45:16 -07:00
blk-rq-qos.h	blk-rq-qos: fix first node deletion of rq_qos_del()	2019-10-29 09:20:09 +01:00
blk-settings.c	blk-settings: align max_sectors on "logical_block_size" boundary	2021-03-04 09:39:51 +01:00
blk-softirq.c
blk-stat.c
blk-stat.h	block: deactivate blk_stat timer in wbt_disable_default()	2019-01-13 09:51:06 +01:00
blk-sysfs.c	block: don't delete queue kobject before its children	2022-04-15 14:14:43 +02:00
blk-tag.c
blk-throttle.c	blk-throttle: fix UAF by deleteing timer in blk_throtl_exit()	2021-09-26 13:39:49 +02:00
blk-timeout.c
blk-wbt.c	blk-wbt: make sure throttle is enabled properly	2021-07-20 16:15:48 +02:00
blk-wbt.h	blk-wbt: introduce a new disable state to prevent false positive by rwb_enabled()	2021-07-20 16:15:48 +02:00
blk-zoned.c	blk-zoned: allow BLKREPORTZONE without CAP_SYS_ADMIN	2021-09-22 11:47:57 +02:00
blk.h	block: split .sysfs_lock into two locks	2021-03-04 09:39:30 +01:00
bounce.c
bsg-lib.c
bsg.c
cfq-iosched.c
cmdline-parser.c
compat_ioctl.c	block/compat_ioctl: fix range check in BLKGETSIZE	2022-04-27 13:39:45 +02:00
deadline-iosched.c
elevator.c	block/wbt: fix negative inflight counter when remove scsi device	2022-02-23 11:58:40 +01:00
genhd.c	block: Suppress uevent for hidden device when removed	2021-03-30 14:36:59 +02:00
ioctl.c
ioprio.c	block: fix ioprio_get(IOPRIO_WHO_PGRP) vs setuid(2)	2021-12-14 10:18:07 +01:00
Kconfig
Kconfig.iosched
kyber-iosched.c
Makefile
mq-deadline.c	block: mq-deadline: Fix queue restart handling	2019-10-07 18:57:19 +02:00
noop-iosched.c
opal_proto.h
partition-generic.c	block: unhash blkdev part inode when the part is deleted	2023-01-18 11:29:59 +01:00
scsi_ioctl.c
sed-opal.c	block: sed-opal: kmalloc the cmd/resp buffers	2022-11-25 17:40:23 +01:00
t10-pi.c