From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Nathan Chancellor <nathan@kernel.org>,
Sami Tolvanen <samitolvanen@google.com>,
Kees Cook <keescook@chromium.org>
Subject: [PATCH 6.0 05/17] Makefile.extrawarn: Move -Wcast-function-type-strict to W=1
Date: Mon, 10 Oct 2022 09:04:28 +0200 [thread overview]
Message-ID: <20221010070330.348608074@linuxfoundation.org> (raw)
In-Reply-To: <20221010070330.159911806@linuxfoundation.org>
From: Sami Tolvanen <samitolvanen@google.com>
commit 2120635108b35ecad9c59c8b44f6cbdf4f98214e upstream.
We enable -Wcast-function-type globally in the kernel to warn about
mismatching types in function pointer casts. Compilers currently
warn only about ABI incompability with this flag, but Clang 16 will
enable a stricter version of the check by default that checks for an
exact type match. This will be very noisy in the kernel, so disable
-Wcast-function-type-strict without W=1 until the new warnings have
been addressed.
Cc: stable@vger.kernel.org
Link: https://reviews.llvm.org/D134831
Link: https://github.com/ClangBuiltLinux/linux/issues/1724
Suggested-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220930203310.4010564-1-samitolvanen@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
scripts/Makefile.extrawarn | 1 +
1 file changed, 1 insertion(+)
--- a/scripts/Makefile.extrawarn
+++ b/scripts/Makefile.extrawarn
@@ -64,6 +64,7 @@ KBUILD_CFLAGS += -Wno-sign-compare
KBUILD_CFLAGS += $(call cc-disable-warning, pointer-to-enum-cast)
KBUILD_CFLAGS += -Wno-tautological-constant-out-of-range-compare
KBUILD_CFLAGS += $(call cc-disable-warning, unaligned-access)
+KBUILD_CFLAGS += $(call cc-disable-warning, cast-function-type-strict)
endif
endif
next prev parent reply other threads:[~2022-10-10 7:06 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-10 7:04 [PATCH 6.0 00/17] 6.0.1-rc1 review Greg Kroah-Hartman
2022-10-10 7:04 ` [PATCH 6.0 01/17] xsk: Inherit need_wakeup flag for shared sockets Greg Kroah-Hartman
2022-10-10 7:04 ` [PATCH 6.0 02/17] fs: fix UAF/GPF bug in nilfs_mdt_destroy Greg Kroah-Hartman
2022-10-10 7:04 ` [PATCH 6.0 03/17] [brown paperbag] fix coredump breakage Greg Kroah-Hartman
2022-10-10 7:04 ` [PATCH 6.0 04/17] sparc: Unbreak the build Greg Kroah-Hartman
2022-10-10 7:04 ` Greg Kroah-Hartman [this message]
2022-10-10 7:04 ` [PATCH 6.0 06/17] hardening: Remove Clangs enable flag for -ftrivial-auto-var-init=zero Greg Kroah-Hartman
2022-10-10 7:04 ` [PATCH 6.0 07/17] docs: update mediator information in CoC docs Greg Kroah-Hartman
2022-10-10 7:04 ` [PATCH 6.0 08/17] hwmon: (aquacomputer_d5next) Fix Quadro fan speed offsets Greg Kroah-Hartman
2022-10-10 7:04 ` [PATCH 6.0 09/17] usb: mon: make mmapped memory read only Greg Kroah-Hartman
2022-10-10 7:04 ` [PATCH 6.0 10/17] USB: serial: ftdi_sio: fix 300 bps rate for SIO Greg Kroah-Hartman
2022-10-10 7:04 ` [PATCH 6.0 11/17] gpiolib: acpi: Add support to ignore programming an interrupt Greg Kroah-Hartman
2022-10-10 7:04 ` [PATCH 6.0 12/17] gpiolib: acpi: Add a quirk for Asus UM325UAZ Greg Kroah-Hartman
2022-10-10 7:04 ` [PATCH 6.0 13/17] RISC-V: Print SSTC in canonical order Greg Kroah-Hartman
2022-10-10 7:04 ` [PATCH 6.0 14/17] bpf: Gate dynptr API behind CAP_BPF Greg Kroah-Hartman
2022-10-10 7:04 ` [PATCH 6.0 15/17] net: ethernet: mtk_eth_soc: fix state in __mtk_foe_entry_clear Greg Kroah-Hartman
2022-10-10 7:04 ` [PATCH 6.0 16/17] bpf: Fix resetting logic for unreferenced kptrs Greg Kroah-Hartman
2022-10-10 7:04 ` [PATCH 6.0 17/17] Bluetooth: use hdev->workqueue when queuing hdev->{cmd,ncmd}_timer works Greg Kroah-Hartman
2022-10-10 7:43 ` [PATCH 6.0 00/17] 6.0.1-rc1 review Luna Jernberg
2022-10-12 9:04 ` Pavel Machek
2022-10-12 9:13 ` Luna Jernberg
2022-10-10 14:03 ` Fenil Jain
2022-10-10 15:41 ` Naresh Kamboju
2022-10-10 17:07 ` Justin Forbes
2022-10-10 19:13 ` Florian Fainelli
2022-10-10 21:26 ` Shuah Khan
2022-10-11 0:59 ` Zan Aziz
2022-10-11 2:43 ` Slade Watkins
2022-10-11 3:18 ` Guenter Roeck
2022-10-11 8:10 ` Rudi Heitbaum
2022-10-11 8:58 ` Bagas Sanjaya
2022-10-11 16:12 ` Jon Hunter
2022-10-11 20:35 ` Sudip Mukherjee (Codethink)
2022-10-12 0:25 ` Ron Economos
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20221010070330.348608074@linuxfoundation.org \
--to=gregkh@linuxfoundation.org \
--cc=keescook@chromium.org \
--cc=linux-kernel@vger.kernel.org \
--cc=nathan@kernel.org \
--cc=samitolvanen@google.com \
--cc=stable@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).