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Christian Marangi 846ceb1a94 mtd: mtdpart: ignore error -ENOENT from parsers on subpartitions 
commit 64ef5f454e upstream.

Commit 5c2f7727d4 ("mtd: mtdpart: check for subpartitions parsing
result") introduced some kind of regression with parser on subpartitions
where if a parser emits an error then the entire parsing process from the
upper parser fails and partitions are deleted.

Not checking for error in subpartitions was originally intended as
special parser can emit error also in the case of the partition not
correctly init (for example a wiped partition) or special case where the
partition should be skipped due to some ENV variables externally
provided (from bootloader for example)

One example case is the TRX partition where, in the context of a wiped
partition, returns a -ENOENT as the trx_magic is not found in the
expected TRX header (as the partition is wiped)

To better handle this and still keep some kind of error tracking (for
example to catch -ENOMEM errors or -EINVAL errors), permit parser on
subpartition to emit -ENOENT error, print a debug log and skip them
accordingly.

This results in giving better tracking of the status of the parser
(instead of returning just 0, dropping any kind of signal that there is
something wrong with the parser) and to some degree restore the original
logic of the subpartitions parse.

(worth to notice that some special partition might have all the special
header present for the parser and declare 0 partition in it, this is why
it would be wrong to simply return 0 in the case of a special partition
that is NOT init for the scanning parser)

Cc: stable@vger.kernel.org
Fixes: 5c2f7727d4 ("mtd: mtdpart: check for subpartitions parsing result")
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2026-01-08 10:14:42 +01:00
arch powerpc/64s/slb: Fix SLB multihit issue during SLB preload 2026-01-08 10:14:41 +01:00
block block: Clear BLK_ZONE_WPLUG_PLUGGED when aborting plugged BIOs 2026-01-08 10:14:42 +01:00
certs sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3 2024-09-20 19:52:48 +03:00
crypto crypto: seqiv - Do not use req->iv after crypto_aead_encrypt 2026-01-08 10:14:32 +01:00
Documentation dt-bindings: PCI: qcom,pcie-sm8550: Add missing required power-domains and resets 2026-01-08 10:14:28 +01:00
drivers mtd: mtdpart: ignore error -ENOENT from parsers on subpartitions 2026-01-08 10:14:42 +01:00
fs ntfs: Do not overwrite uptodate pages 2026-01-08 10:14:37 +01:00
include genalloc.h: fix htmldocs warning 2026-01-08 10:14:34 +01:00
init init: handle bootloader identifier in kernel parameters 2025-10-19 16:33:50 +02:00
io_uring io_uring: fix min_wait wakeups for SQPOLL 2026-01-08 10:14:25 +01:00
ipc ipc: fix to protect IPCS lookups using RCU 2025-06-27 11:11:22 +01:00
kernel fgraph: Check ftrace_pids_enabled on registration for early filtering 2026-01-08 10:14:41 +01:00
lib lib/vsprintf: Check pointer before dereferencing in time_and_date() 2025-12-18 13:54:57 +01:00
LICENSES LICENSES: add 0BSD license text 2024-09-01 20:43:24 -07:00
mm shmem: fix recovery on rename failures 2026-01-08 10:13:54 +01:00
net ipv6: fix a BUG in rt6_get_pcpu_route() under PREEMPT_RT 2026-01-08 10:14:35 +01:00
rust rust: kbuild: workaround rustdoc doctests modifier bug 2025-11-24 10:36:07 +01:00
samples samples: work around glibc redefining some of our defines wrong 2025-12-12 18:37:21 +01:00
scripts kbuild: fix compilation of dtb specified on command-line without make rule 2026-01-08 10:14:34 +01:00
security KEYS: trusted: Fix a memory leak in tpm2_load_cmd 2026-01-08 10:14:13 +01:00
sound ASoC: qcom: qdsp6: q6asm-dai: set 10 ms period and buffer alignment. 2026-01-08 10:14:39 +01:00
tools selftests/ftrace: traceonoff_triggers: strip off names 2026-01-08 10:14:37 +01:00
usr kbuild: uapi: Strip comments before size type check 2025-11-13 15:34:35 -05:00
virt KVM: Disallow toggling KVM_MEM_GUEST_MEMFD on an existing memslot 2026-01-08 10:14:21 +01:00
.clang-format clang-format: Update with v6.11-rc1's for_each macro list 2024-08-02 13:20:31 +02:00
.clippy.toml rust: give Clippy the minimum supported Rust version 2025-08-01 09:48:44 +01:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore Add Jeff Kirsher to .get_maintainer.ignore 2024-03-08 11:36:54 +00:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore rust: introduce .clippy.toml 2025-03-13 13:01:42 +01:00
.mailmap mailmap: add entry for Thorsten Blum 2024-11-07 14:14:59 -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 self from DSA entry 2024-11-03 12:52:38 -08:00
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 staging: rtl8712: Remove driver using deprecated API wext 2025-12-07 06:25:02 +09:00
Makefile Linux 6.12.63 2025-12-18 13:55:23 +01:00
README README: Fix spelling 2024-03-18 03:36:32 -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 reStructuredText 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.