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Ming Lei 858c489d81 block: fix q->blkg_list corruption during disk rebind 
[ Upstream commit 8b8ace0803 ]

Multiple gendisk instances can allocated/added for single request queue
in case of disk rebind. blkg may still stay in q->blkg_list when calling
blkcg_init_disk() for rebind, then q->blkg_list becomes corrupted.

Fix the list corruption issue by:

- add blkg_init_queue() to initialize q->blkg_list & q->blkcg_mutex only
- move calling blkg_init_queue() into blk_alloc_queue()

The list corruption should be started since commit f1c006f1c6 ("blk-cgroup:
synchronize pd_free_fn() from blkg_free_workfn() and blkcg_deactivate_policy()")
which delays removing blkg from q->blkg_list into blkg_free_workfn().

Fixes: f1c006f1c6 ("blk-cgroup: synchronize pd_free_fn() from blkg_free_workfn() and blkcg_deactivate_policy()")
Fixes: 1059699f87 ("block: move blkcg initialization/destroy into disk allocation/release handler")
Cc: Yu Kuai <yukuai3@huawei.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240407125910.4053377-1-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-04-17 11:23:28 +02:00
arch arm64: dts: imx8-ss-conn: fix usdhc wrong lpcg clock order 2024-04-17 11:23:27 +02:00
block block: fix q->blkg_list corruption during disk rebind 2024-04-17 11:23:28 +02:00
certs This update includes the following changes: 2023-11-02 16:15:30 -10:00
crypto Revert "crypto: pkcs7 - remove sha1 support" 2024-04-03 15:32:31 +02:00
Documentation dt-bindings: display/msm: sm8150-mdss: add DP node 2024-04-17 11:23:27 +02:00
drivers octeontx2-pf: Fix transmit scheduler resource leak 2024-04-17 11:23:28 +02:00
fs btrfs: tests: allocate dummy fs_info and root in test_find_delalloc() 2024-04-17 11:23:25 +02:00
include u64_stats: fix u64_stats_init() for lockdep when used repeatedly in one file 2024-04-17 11:23:28 +02:00
init init: open /initrd.image with O_LARGEFILE 2024-04-03 15:32:37 +02:00
io_uring io_uring: clear opcode specific data for an early failure 2024-04-13 13:10:10 +02:00
ipc shm: Slim down dependencies 2023-12-20 19:26:31 -05:00
kernel PM: s2idle: Make sure CPUs will wakeup directly on resume 2024-04-17 11:23:25 +02:00
lib dump_stack: Do not get cpu_sync for panic CPU 2024-04-13 13:09:58 +02:00
LICENSES
mm x86/mm/pat: fix VM_PAT handling in COW mappings 2024-04-10 16:38:19 +02:00
net xsk: validate user input for XDP_{UMEM|COMPLETION}_FILL_RING 2024-04-17 11:23:28 +02:00
rust Rust changes for v6.8 2024-01-11 13:05:41 -08:00
samples work around gcc bugs with 'asm goto' with outputs 2024-02-09 15:57:48 -08:00
scripts gcc-plugins/stackleak: Avoid .head.text section 2024-04-13 13:10:11 +02:00
security selinux: avoid dereference of garbage after mount failure 2024-04-10 16:38:01 +02:00
sound ALSA: hda/realtek: Add quirks for some Clevo laptops 2024-04-13 13:10:11 +02:00
tools tools: iio: replace seekdir() in iio_generic_buffer 2024-04-13 13:10:08 +02:00
usr Kbuild updates for v6.8 2024-01-18 17:57:07 -08:00
virt KVM: Always flush async #PF workqueue when vCPU is being destroyed 2024-04-03 15:32:03 +02:00
.clang-format clang-format: Update with v6.7-rc4's for_each macro list 2023-12-08 23:54:38 +01:00
.cocciconfig
.editorconfig Add .editorconfig file for basic formatting 2023-12-28 16:22:47 +09:00
.get_maintainer.ignore
.gitattributes
.gitignore Add .editorconfig file for basic formatting 2023-12-28 16:22:47 +09:00
.mailmap drm fixes for 6.8 final 2024-03-08 12:44:56 -08:00
.rustfmt.toml
COPYING
CREDITS MAINTAINERS: supplement of zswap maintainers update 2024-01-25 23:52:21 -08:00
Kbuild
Kconfig
MAINTAINERS drm fixes for 6.8 final 2024-03-08 12:44:56 -08:00
Makefile Linux 6.8.6 2024-04-13 13:10:12 +02:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.