From: "Thomas Weißschuh" <thomas.weissschuh@linutronix.de>
To: Arnd Bergmann <arnd@arndb.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>,
Andy Lutomirski <luto@kernel.org>,
Thomas Gleixner <tglx@kernel.org>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, Russell King <linux@armlinux.org.uk>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Madhavan Srinivasan <maddy@linux.ibm.com>,
Michael Ellerman <mpe@ellerman.id.au>,
Nicholas Piggin <npiggin@gmail.com>,
Christophe Leroy <chleroy@kernel.org>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
Vincenzo Frascino <vincenzo.frascino@arm.com>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linuxppc-dev@lists.ozlabs.org, linux-mips@vger.kernel.org
Subject: Re: [PATCH 1/7] x86/vdso: Respect COMPAT_32BIT_TIME
Date: Tue, 14 Apr 2026 12:16:49 +0200 [thread overview]
Message-ID: <20260414121405-29c9514e-590c-404e-a31d-905b1848afb4@linutronix.de> (raw)
In-Reply-To: <e9487ebe-3730-438a-9c23-e45f75986ecc@app.fastmail.com>
On Mon, Apr 13, 2026 at 06:57:57PM +0200, Arnd Bergmann wrote:
> On Mon, Apr 13, 2026, at 18:13, Thomas Weißschuh wrote:
(...)
> > if (tv && !IS_ENABLED(CONFIG_COMPAT_32BIT_TIME) && sizeof(tv->tv_sec) < 8) {
> > pr_warn_once(...);
> > return -EINVAL;
> > }
> >
> > Or maybe drop the EINVAL but still emit a warning. That warning would be
> > useful for gettimeofday(), too.
>
> We discussed this during the original y2038 work and decided
> at the time to not have those warnings for syscalls. We could
> bring that back, but I think I would want one level of abstraction
> there and control this using a global Kconfig switch for all
> syscalls as well as ioctl commands that could use such a check.
I'd like to avoid another kconfig option. Linus doesn't sound too
excited about those [0].
Thomas
[0] https://lore.kernel.org/lkml/CAHk-=whigg3hvOy7c1j1MXFy6o6CHp0g4Tc3Y-MAk+XDssHU0A@mail.gmail.com/
next prev parent reply other threads:[~2026-04-14 10:16 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-27 6:57 [PATCH 0/7] vDSO: Respect COMPAT_32BIT_TIME Thomas Weißschuh
2026-02-27 6:57 ` [PATCH 1/7] x86/vdso: " Thomas Weißschuh
2026-02-27 8:51 ` Arnd Bergmann
2026-02-27 8:58 ` Arnd Bergmann
2026-02-27 9:34 ` Thomas Weißschuh
2026-03-03 18:11 ` H. Peter Anvin
2026-03-03 20:50 ` Arnd Bergmann
2026-03-03 21:00 ` H. Peter Anvin
2026-03-03 21:27 ` Arnd Bergmann
2026-03-03 21:36 ` H. Peter Anvin
2026-04-10 7:24 ` Thomas Weißschuh
2026-04-13 15:59 ` Arnd Bergmann
2026-04-13 16:13 ` Thomas Weißschuh
2026-04-13 16:57 ` Arnd Bergmann
2026-04-14 10:16 ` Thomas Weißschuh [this message]
2026-03-04 7:35 ` Thomas Weißschuh
2026-03-04 18:30 ` H. Peter Anvin
2026-03-05 9:24 ` Thomas Weißschuh
2026-03-05 23:57 ` H. Peter Anvin
2026-03-06 9:42 ` Thomas Weißschuh
2026-03-06 20:52 ` H. Peter Anvin
2026-02-27 6:57 ` [PATCH 2/7] ARM: VDSO: " Thomas Weißschuh
2026-02-27 6:57 ` [PATCH 3/7] arm64: vdso32: " Thomas Weißschuh
2026-02-27 6:57 ` [PATCH 4/7] powerpc/vdso: " Thomas Weißschuh
2026-02-27 6:57 ` [PATCH 5/7] MIPS: VDSO: Drop kconfig MIPS_CLOCK_VSYSCALL Thomas Weißschuh
2026-02-27 8:46 ` Arnd Bergmann
2026-02-27 9:31 ` Thomas Weißschuh
2026-02-27 10:03 ` Arnd Bergmann
2026-02-27 10:17 ` Thomas Weißschuh
2026-02-27 6:57 ` [PATCH 6/7] MIPS: VDSO: Respect COMPAT_32BIT_TIME Thomas Weißschuh
2026-02-27 6:57 ` [PATCH 7/7] vdso/gettimeofday: Verify COMPAT_32BIT_TIME interactions Thomas Weißschuh
2026-02-27 8:49 ` Arnd Bergmann
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