From: Markus Elfring <Markus.Elfring@web.de>
To: David Laight <david.laight.linux@gmail.com>,
Lorenzo Stoakes <ljs@kernel.org>,
linux-kbuild@vger.kernel.org
Cc: x86@kernel.org, "Albert Ou" <aou@eecs.berkeley.edu>,
"Alexandre Courbot" <acourbot@nvidia.com>,
"Alexandre Ghiti" <alex@ghiti.fr>,
"Alexey Gladkov" <legion@kernel.org>,
"Alice Ryhl" <aliceryhl@google.com>,
"Andreas Hindborg" <a.hindborg@kernel.org>,
"Ard Biesheuvel" <ardb@kernel.org>,
"Arnd Bergmann" <arnd@arndb.de>,
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"Bill Wendling" <morbo@google.com>,
"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
"Boqun Feng" <boqun@kernel.org>, "Borislav Petkov" <bp@alien8.de>,
"Catalin Marinas" <catalin.marinas@arm.com>,
"Daniel Almeida" <daniel.almeida@collabora.com>,
"Danilo Krummrich" <dakr@kernel.org>,
"Dave Hansen" <dave.hansen@linux.intel.com>,
"Gary Guo" <gary@garyguo.net>,
"Gustavo A. R. Silva" <gustavoars@kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>,
"Ilias Apalodimas" <ilias.apalodimas@linaro.org>,
"Ingo Molnar" <mingo@redhat.com>,
"Jonathan Corbet" <corbet@lwn.net>,
"Josh Poimboeuf" <jpoimboe@kernel.org>,
"Justin Stitt" <justinstitt@google.com>,
"Kees Cook" <kees@kernel.org>,
"Linus Torvalds" <torvalds@linux-foundation.org>,
"Mark Rutland" <mark.rutland@arm.com>,
"Masahiro Yamada" <masahiroy@kernel.org>,
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"Nick Desaulniers" <ndesaulniers@google.com>,
"Nicolas Schier" <nsc@kernel.org>,
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"Palmer Dabbelt" <palmer@dabbelt.com>,
"Paul Walmsley" <pjw@kernel.org>,
"Peter Zijlstra" <peterz@infradead.org>,
"Randy Dunlap" <rdunlap@infradead.org>,
"Tamir Duberstein" <tamird@kernel.org>,
"Thomas Gleixner" <tglx@kernel.org>,
"Trevor Gross" <tmgross@umich.edu>,
"Will Deacon" <will@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
kernel-janitors@vger.kernel.org, linux-hardening@vger.kernel.org,
linux-doc@vger.kernel.org, linux-efi@vger.kernel.org,
rust-for-linux@vger.kernel.org, linux-arch@vger.kernel.org,
llvm@lists.linux.dev, linux-riscv@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
"Jens Axboe" <axboe@kernel.dk>
Subject: Re: [v2 03/21] kallsyms: output binary data to speed output and kallsyms assembly
Date: Tue, 15 Sep 2026 09:10:06 +0200 [thread overview]
Message-ID: <381ad17b-72e6-4368-8876-29495f4b423e@web.de> (raw)
In-Reply-To: <20260914224432.7ed40d48@pumpkin>
>> I suggest to avoid return value ignorance a bit more.
>> https://cmu-sei.github.io/secure-coding-standards/sei-cert-c-coding-standard/rules/error-handling-err/err33-c/
>> https://cwe.mitre.org/data/definitions/252.html
>
> And I suggest you do some real coding...
> The error is sticky and can be checked using ferror().
Are there further warnings to reconsider also according to unchecked and unused return values?
> Code that looks at the return value from fprintf() fwrite() etc is very
> often broken because the only time they can actual fail is when the
> buffer is flushed during close.
Is this a special implementation detail?
> Adding error checks to every call just make the code unreadable.
Some developers got used to corresponding programming possibilities.
Interests might grow also for aspect-oriented software development,
doesn't it?
Regards,
Markus
next prev parent reply other threads:[~2026-09-15 7:11 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-14 9:21 [PATCH v2 00/21] kbuild: significantly speed up kernel builds Lorenzo Stoakes (ARM)
2026-09-14 9:22 ` [PATCH v2 01/21] kbuild: do not allocate .modinfo in vmlinux Lorenzo Stoakes (ARM)
2026-09-14 9:22 ` [PATCH v2 02/21] kallsyms: index symbols by token to speed up table compression Lorenzo Stoakes (ARM)
2026-09-14 9:22 ` [PATCH v2 03/21] kallsyms: output binary data to speed output and kallsyms assembly Lorenzo Stoakes (ARM)
2026-09-14 20:16 ` Markus Elfring
2026-09-14 21:44 ` David Laight
2026-09-15 7:10 ` Markus Elfring [this message]
2026-09-14 9:22 ` [PATCH v2 04/21] kbuild: do not sort nm output where the order is irrelevant Lorenzo Stoakes (ARM)
2026-09-14 9:22 ` [PATCH v2 05/21] kbuild: only emit vmlinux relocations when required Lorenzo Stoakes (ARM)
2026-09-14 9:22 ` [PATCH v2 06/21] elf-parse: add section flags, symbol binding and a read-only mapping Lorenzo Stoakes (ARM)
2026-09-14 9:22 ` [PATCH v2 07/21] kallsyms: reimplement mksysmap in C Lorenzo Stoakes (ARM)
2026-09-14 16:33 ` Markus Elfring
2026-09-14 16:54 ` Markus Elfring
2026-09-14 17:01 ` Markus Elfring
2026-09-14 9:22 ` [PATCH v2 08/21] kbuild: cache list, composite object state per object Lorenzo Stoakes (ARM)
2026-09-14 9:22 ` [PATCH v2 09/21] kbuild: implement and use depcheck to check dependency timestamps Lorenzo Stoakes (ARM)
2026-09-14 9:22 ` [PATCH v2 10/21] kbuild: move the toolchain checks into init/Kconfig.toolchain Lorenzo Stoakes (ARM)
2026-09-14 9:22 ` [PATCH v2 11/21] kbuild: avoid re-running compiler and linker probes Lorenzo Stoakes (ARM)
2026-09-14 15:02 ` John Stoffel
2026-09-14 15:24 ` Lorenzo Stoakes (ARM)
2026-09-15 11:01 ` Lorenzo Stoakes (ARM)
2026-09-14 9:22 ` [PATCH v2 12/21] modpost: cache section relocation mismatch state Lorenzo Stoakes (ARM)
2026-09-14 9:22 ` [PATCH v2 13/21] modpost: emit module descriptors as assembly Lorenzo Stoakes (ARM)
2026-09-14 9:22 ` [PATCH v2 14/21] kbuild: batch module finalisation Lorenzo Stoakes (ARM)
2026-09-14 18:00 ` Kees Cook
2026-09-15 10:44 ` Lorenzo Stoakes (ARM)
2026-09-15 16:49 ` Kees Cook
2026-09-15 17:54 ` Lorenzo Stoakes (ARM)
2026-09-15 17:56 ` Nick Desaulniers
2026-09-16 14:30 ` Lorenzo Stoakes (ARM)
2026-09-14 9:22 ` [PATCH v2 15/21] objtool: cache relocations, do less work Lorenzo Stoakes (ARM)
2026-09-14 19:44 ` Josh Poimboeuf
2026-09-14 20:06 ` Linus Torvalds
2026-09-14 22:23 ` Josh Poimboeuf
2026-09-14 22:30 ` Linus Torvalds
2026-09-15 12:24 ` Lorenzo Stoakes (ARM)
2026-09-15 12:19 ` Lorenzo Stoakes (ARM)
2026-09-14 9:22 ` [PATCH v2 16/21] objtool: size the instruction hash to the text Lorenzo Stoakes (ARM)
2026-09-14 9:22 ` [PATCH v2 17/21] objtool: decode instructions and resolve branch targets in parallel Lorenzo Stoakes (ARM)
2026-09-14 18:20 ` Kees Cook
2026-09-15 10:09 ` Lorenzo Stoakes (ARM)
2026-09-15 11:29 ` David Laight
2026-09-15 15:04 ` Lorenzo Stoakes (ARM)
2026-09-14 9:22 ` [PATCH v2 18/21] kbuild: rust: optionally parallelise rustc front end Lorenzo Stoakes (ARM)
2026-09-14 18:32 ` Kees Cook
2026-09-15 11:09 ` Lorenzo Stoakes (ARM)
2026-09-15 11:16 ` Lorenzo Stoakes (ARM)
2026-09-15 6:32 ` Miguel Ojeda
2026-09-15 11:15 ` Lorenzo Stoakes (ARM)
2026-09-14 9:22 ` [PATCH v2 19/21] rust: make exports.o depend on the headers generated for it Lorenzo Stoakes (ARM)
2026-09-14 9:22 ` [PATCH v2 20/21] kbuild: build rust crates in parallel with the rest of the build Lorenzo Stoakes (ARM)
2026-09-14 18:37 ` Kees Cook
2026-09-15 11:58 ` Lorenzo Stoakes (ARM)
2026-09-15 16:52 ` Kees Cook
2026-09-16 14:04 ` Lorenzo Stoakes (ARM)
2026-09-16 7:42 ` Gary Guo
2026-09-16 14:03 ` Lorenzo Stoakes (ARM)
2026-09-14 9:22 ` [PATCH v2 21/21] kbuild: use pigz for gzip compression if available Lorenzo Stoakes (ARM)
2026-09-14 16:39 ` Kees Cook
2026-09-14 16:49 ` H. Peter Anvin
2026-09-14 17:50 ` Kees Cook
2026-09-15 14:30 ` Lorenzo Stoakes (ARM)
2026-09-15 17:31 ` Kees Cook
2026-09-15 17:47 ` Nick Desaulniers
2026-09-15 18:02 ` Arnd Bergmann
2026-09-16 14:33 ` Lorenzo Stoakes (ARM)
2026-09-16 14:40 ` Lorenzo Stoakes (ARM)
2026-09-16 1:06 ` Kees Cook
2026-09-16 6:38 ` Arnd Bergmann
2026-09-16 15:08 ` Lorenzo Stoakes (ARM)
2026-09-16 15:27 ` Kees Cook
2026-09-17 14:32 ` Lorenzo Stoakes (ARM)
2026-09-16 15:03 ` Lorenzo Stoakes (ARM)
2026-09-16 15:09 ` Kees Cook
2026-09-16 15:26 ` Lorenzo Stoakes (ARM)
2026-09-14 15:41 ` [PATCH v2 00/21] kbuild: significantly speed up kernel builds Kees Cook
2026-09-14 15:53 ` Linus Torvalds
2026-09-15 8:53 ` Arnd Bergmann
2026-09-15 11:35 ` Lorenzo Stoakes (ARM)
2026-09-14 18:25 ` Lorenzo Stoakes (ARM)
2026-09-14 18:43 ` Kees Cook
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