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Kernel for Galaxy S24, rebased on CLO sources (WIP)
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Joe Thornber 673a3af21d dm cache: free background tracker's queued work in btracker_destroy 
commit 95ab80a8a0fef2ce0cc494a306dd283948066ce7 upstream.

Otherwise the kernel can BUG with:

[ 2245.426978] =============================================================================
[ 2245.435155] BUG bt_work (Tainted: G    B   W         ): Objects remaining in bt_work on __kmem_cache_shutdown()
[ 2245.445233] -----------------------------------------------------------------------------
[ 2245.445233]
[ 2245.454879] Slab 0x00000000b0ce2b30 objects=64 used=2 fp=0x000000000a3c6a4e flags=0x17ffffc0000200(slab|node=0|zone=2|lastcpupid=0x1fffff)
[ 2245.467300] CPU: 7 PID: 10805 Comm: lvm Kdump: loaded Tainted: G    B   W          6.0.0-rc2 #19
[ 2245.476078] Hardware name: Dell Inc. PowerEdge R7525/0590KW, BIOS 2.5.6 10/06/2021
[ 2245.483646] Call Trace:
[ 2245.486100]  <TASK>
[ 2245.488206]  dump_stack_lvl+0x34/0x48
[ 2245.491878]  slab_err+0x95/0xcd
[ 2245.495028]  __kmem_cache_shutdown.cold+0x31/0x136
[ 2245.499821]  kmem_cache_destroy+0x49/0x130
[ 2245.503928]  btracker_destroy+0x12/0x20 [dm_cache]
[ 2245.508728]  smq_destroy+0x15/0x60 [dm_cache_smq]
[ 2245.513435]  dm_cache_policy_destroy+0x12/0x20 [dm_cache]
[ 2245.518834]  destroy+0xc0/0x110 [dm_cache]
[ 2245.522933]  dm_table_destroy+0x5c/0x120 [dm_mod]
[ 2245.527649]  __dm_destroy+0x10e/0x1c0 [dm_mod]
[ 2245.532102]  dev_remove+0x117/0x190 [dm_mod]
[ 2245.536384]  ctl_ioctl+0x1a2/0x290 [dm_mod]
[ 2245.540579]  dm_ctl_ioctl+0xa/0x20 [dm_mod]
[ 2245.544773]  __x64_sys_ioctl+0x8a/0xc0
[ 2245.548524]  do_syscall_64+0x5c/0x90
[ 2245.552104]  ? syscall_exit_to_user_mode+0x12/0x30
[ 2245.556897]  ? do_syscall_64+0x69/0x90
[ 2245.560648]  ? do_syscall_64+0x69/0x90
[ 2245.564394]  entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 2245.569447] RIP: 0033:0x7fe52583ec6b
...
[ 2245.646771] ------------[ cut here ]------------
[ 2245.651395] kmem_cache_destroy bt_work: Slab cache still has objects when called from btracker_destroy+0x12/0x20 [dm_cache]
[ 2245.651408] WARNING: CPU: 7 PID: 10805 at mm/slab_common.c:478 kmem_cache_destroy+0x128/0x130

Found using: lvm2-testsuite --only "cache-single-split.sh"

Ben bisected and found that commit 0495e337b7 ("mm/slab_common:
Deleting kobject in kmem_cache_destroy() without holding
slab_mutex/cpu_hotplug_lock") first exposed dm-cache's incomplete
cleanup of its background tracker work objects.

Reported-by: Benjamin Marzinski <bmarzins@redhat.com>
Tested-by: Benjamin Marzinski <bmarzins@redhat.com>
Cc: stable@vger.kernel.org # 6.0+
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-03-10 09:34:23 +01:00
arch x86/speculation: Allow enabling STIBP with legacy IBRS 2023-03-10 09:34:14 +01:00
block block: be a bit more careful in checking for NULL bdev while polling 2023-03-10 09:34:02 +01:00
certs certs: Fix build error when PKCS#11 URI contains semicolon 2023-02-09 11:28:11 +01:00
crypto crypto: rsa-pkcs1pad - Use akcipher_request_complete 2023-03-10 09:33:03 +01:00
Documentation Documentation/hw-vuln: Document the interaction between IBRS and STIBP 2023-03-10 09:34:14 +01:00
drivers dm cache: free background tracker's queued work in btracker_destroy 2023-03-10 09:34:23 +01:00
fs ext4: refuse to create ea block when umounted 2023-03-10 09:34:20 +01:00
include cxl/pmem: Fix nvdimm registration races 2023-03-10 09:34:20 +01:00
init gcc: disable -Warray-bounds for gcc-11 too 2023-01-14 10:33:43 +01:00
io_uring io_uring: mark task TASK_RUNNING before handling resume/task work 2023-03-10 09:34:07 +01:00
ipc ipc: fix memory leak in init_mqueue_fs() 2022-12-31 13:32:01 +01:00
kernel irqdomain: Fix domain registration race 2023-03-10 09:34:19 +01:00
lib cpuidle: lib/bug: Disable rcu_is_watching() during WARN/BUG 2023-03-10 09:33:47 +01:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm mm/damon/paddr: fix missing folio_put() 2023-03-10 09:34:20 +01:00
net wifi: cfg80211: Set SSID if it is not already set 2023-03-10 09:34:22 +01:00
rust rust: print: avoid evaluating arguments in pr_* macros in unsafe blocks 2023-02-06 08:06:34 +01:00
samples ftrace: Export ftrace_free_filter() to modules 2023-02-01 08:34:37 +01:00
scripts gcc-plugins: drop -std=gnu++11 to fix GCC 13 build 2023-03-10 09:33:51 +01:00
security ima: Align ima_file_mmap() parameters with mmap_file LSM hook 2023-03-10 09:34:15 +01:00
sound ALSA: hda/realtek: Add quirk for HP EliteDesk 800 G6 Tower PC 2023-03-10 09:34:20 +01:00
tools selftests: seccomp: Fix incorrect kernel headers search path 2023-03-10 09:34:18 +01:00
usr usr/gen_init_cpio.c: remove unnecessary -1 values from int file 2022-10-03 14:21:44 -07:00
virt KVM: Register /dev/kvm as the _very_ last thing during initialization 2023-03-10 09:34:11 +01:00
.clang-format inet: ping: use hlist_nulls rcu iterator during lookup 2022-12-01 12:42:46 +01:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore Kbuild: add Rust support 2022-09-28 09:02:20 +02:00
.mailmap 9 hotfixes. 6 for MM, 3 for other areas. Four of these patches address 2022-12-10 17:10:52 -08:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Remove Michal Marek from Kbuild maintainers 2022-11-16 14:53:00 +09:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS audit: update the mailing list in MAINTAINERS 2023-02-25 11:25:42 +01:00
Makefile Linux 6.1.15 2023-03-03 11:52:25 +01:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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.