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Date: Mon, 21 Jul 2025 15:43:25 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Uros Bizjak <ubizjak@gmail.com>
Cc: linux-kernel@vger.kernel.org, "Eric W. Biederman"
 <ebiederm@xmission.com>, Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
 "Paul E. McKenney" <paulmck@kernel.org>, Alexey Gladkov
 <legion@kernel.org>, Roman Gushchin <roman.gushchin@linux.dev>, MengEn Sun
 <mengensun@tencent.com>, Thomas =?ISO-8859-1?Q?Wei=DFschuh?=
 <linux@weissschuh.net>
Subject: Re: [PATCH RESEND v2 1/2] ucount: Fix atomic_long_inc_below()
 argument type
Message-Id: <20250721154325.476b87e09aa5d778bcead478@linux-foundation.org>
In-Reply-To: <20250721174610.28361-1-ubizjak@gmail.com>
References: <20250721174610.28361-1-ubizjak@gmail.com>
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On Mon, 21 Jul 2025 19:45:57 +0200 Uros Bizjak <ubizjak@gmail.com> wrote:

> The type of u argument of atomic_long_inc_below() should be long
> to avoid unwanted truncation to int.
> 
> Fixes: f9c82a4ea89c ("Increase size of ucounts to atomic_long_t")

Please (always!) provide a description of the userspace-visible effects
of the bug.  That way I (and others) can decide whether the fix should
be backported.  And people will be able to determine whether this patch
may fix problems which they are observing.  Thanks.