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Filipe Manana 0d1a761dec btrfs: improve error message after failure to add delayed dir index item 
[ Upstream commit 91bfe3104b ]

If we fail to add a delayed dir index item because there's already another
item with the same index number, we print an error message (and then BUG).
However that message isn't very helpful to debug anything because we don't
know what's the index number and what are the values of index counters in
the inode and its delayed inode (index_cnt fields of struct btrfs_inode
and struct btrfs_delayed_node).

So update the error message to include the index number and counters.

We actually had a recent case where this issue was hit by a syzbot report
(see the link below).

Link: https://lore.kernel.org/linux-btrfs/00000000000036e1290603e097e0@google.com/
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Stable-dep-of: 2c58c3931e ("btrfs: remove BUG() after failure to insert delayed dir index item")
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2023-10-06 14:56:32 +02:00
arch x86/purgatory: Remove LTO flags 2023-09-23 11:11:09 +02:00
block block: factor out a bvec_set_page helper 2023-09-23 11:11:08 +02:00
certs certs: Fix build error when PKCS#11 URI contains semicolon 2023-02-09 11:28:11 +01:00
crypto crypto: lrw,xts - Replace strlcpy with strscpy 2023-09-23 11:11:01 +02:00
Documentation Revert "memcg: drop kmem.limit_in_bytes" 2023-09-23 11:11:12 +02:00
drivers dm: fix a race condition in retrieve_deps 2023-10-06 14:56:32 +02:00
fs btrfs: improve error message after failure to add delayed dir index item 2023-10-06 14:56:32 +02:00
include NFSv4.1: fix pnfs MDS=DS session trunking 2023-10-06 14:56:31 +02:00
init sched/psi: Select KERNFS as needed 2023-09-13 09:42:28 +02:00
io_uring io_uring/net: fix iter retargeting for selected buf 2023-09-23 11:11:10 +02:00
ipc ipc: fix memory leak in init_mqueue_fs() 2022-12-31 13:32:01 +01:00
kernel tracing: Have option files inc the trace array ref count 2023-09-23 11:11:11 +02:00
lib kobject: Add sanity check for kset->kobj.ktype in kset_register() 2023-09-23 11:11:07 +02:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm Revert "memcg: drop kmem.limit_in_bytes" 2023-09-23 11:11:12 +02:00
net NFSv4.1: fix pnfs MDS=DS session trunking 2023-10-06 14:56:31 +02:00
rust rust: allocator: Prevent mis-aligned allocation 2023-08-11 12:08:18 +02:00
samples samples/hw_breakpoint: fix building without module unloading 2023-09-23 11:11:09 +02:00
scripts kconfig: fix possible buffer overflow 2023-09-19 12:27:59 +02:00
security selinux: fix handling of empty opts in selinux_fs_context_submount() 2023-09-23 11:11:11 +02:00
sound ALSA: hda: intel-dsp-cfg: add LunarLake support 2023-09-23 11:11:04 +02:00
tools net/sched: Retire rsvp classifier 2023-09-23 11:11:13 +02:00
usr usr/gen_init_cpio.c: remove unnecessary -1 values from int file 2022-10-03 14:21:44 -07:00
virt kvm/vfio: ensure kvg instance stays around in kvm_vfio_group_add() 2023-09-13 09:42:46 +02:00
.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 devlink: move code to a dedicated directory 2023-08-30 16:11:00 +02:00
Makefile Linux 6.1.55 2023-09-23 11:11:13 +02:00
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.