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Zhihao Cheng 0b8beac8a3 ubifs: Re-statistic cleaned znode count if commit failed [ Upstream commit `944e096aa2` ] Dirty znodes will be written on flash in committing process with following states: process A \| znode state ------------------------------------------------------ do_commit \| DIRTY_ZNODE ubifs_tnc_start_commit \| DIRTY_ZNODE get_znodes_to_commit \| DIRTY_ZNODE \| COW_ZNODE layout_commit \| DIRTY_ZNODE \| COW_ZNODE fill_gap \| 0 write master \| 0 or OBSOLETE_ZNODE process B \| znode state ------------------------------------------------------ do_commit \| DIRTY_ZNODE[1] ubifs_tnc_start_commit \| DIRTY_ZNODE get_znodes_to_commit \| DIRTY_ZNODE \| COW_ZNODE ubifs_tnc_end_commit \| DIRTY_ZNODE \| COW_ZNODE write_index \| 0 write master \| 0 or OBSOLETE_ZNODE[2] or \| DIRTY_ZNODE[3] [1] znode is dirtied without concurrent committing process [2] znode is copied up (re-dirtied by other process) before cleaned up in committing process [3] znode is re-dirtied after cleaned up in committing process Currently, the clean znode count is updated in free_obsolete_znodes(), which is called only in normal path. If do_commit failed, clean znode count won't be updated, which triggers a failure ubifs assertion[4] in ubifs_tnc_close(): ubifs_assert_failed [ubifs]: UBIFS assert failed: freed == n [4] Commit `380347e9ca` ("UBIFS: Add an assertion for clean_zn_cnt"). Fix it by re-statisticing cleaned znode count in tnc_destroy_cnext(). Fetch a reproducer in [Link]. Link: https://bugzilla.kernel.org/show_bug.cgi?id=216704 Fixes: `1e51764a3c` ("UBIFS: add new flash file system") Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Sasha Levin <sashal@kernel.org>		History 2023-03-11 13:55:20 +01:00
arch	um: vector: Fix memory leak in vector_config	2023-03-11 13:55:19 +01:00
block	Revert "blk-cgroup: dropping parent refcount after pd_free_fn() is done"	2023-03-11 11:03:45 +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	mm: memcontrol: deprecate charge moving	2023-03-10 09:34:26 +01:00
drivers	ubi: Fix possible null-ptr-deref in ubi_free_volume()	2023-03-11 13:55:20 +01:00
fs	ubifs: Re-statistic cleaned znode count if commit failed	2023-03-11 13:55:20 +01:00
include	f2fs: introduce trace_f2fs_replace_atomic_write_block	2023-03-11 13:55:17 +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	wait: Return number of exclusive waiters awaken	2023-03-10 09:34:34 +01:00
lib	sbitmap: Try each queue to wake up at least one waiter	2023-03-10 09:34:34 +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	memory tier: release the new_memtier in find_create_memory_tier()	2023-03-10 09:34:27 +01:00
net	net/sched: Retire tcindex classifier	2023-03-11 13:55:16 +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	objtool: Fix memory leak in create_static_call_sections()	2023-03-11 13:55:17 +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 6.1.17	2023-03-11 11:03:45 +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.