From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=193.142.43.55 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792858233; b=YsB+OTKOz2iBEknWXRVcouzGNkMZ21PxjAJ7S0cXcFXXjHsVgvOTseumEC47GmsG0k0g PXpkwsTQwJyVyO+6byFsh1EoDeJRAgh8i3Z9xhk3C2jGWcvZcoe6YxUISAOvWE1GGSDQc I1eOjvJ/MQE3X+LpCwYT9sNKSd1fj0MXEpZtrwmguLofhaSKsI4ATO88EtSsxLi2ayuZF RXsLkPgoyBWL+mXDSuQEwelCTXfQ/Wm6jsAjCLu52f1CCjo4ll9vp9DFmwhtEQPD+QvBz 9gXqQmupAr3o53hpuI24qeEBjGJLVfAiTpIOtg649tvdo+hXp+u5QKfp2wzcqr0G+lA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792858233; h=DMARC-Filter:Date:DKIM-Signature:DKIM-Signature:From:To:Cc:Subject: Message-ID:References:MIME-Version:Content-Type:Content-Disposition: In-Reply-To; bh=ufq3sDd1FSxfZgFeudS3ne2WlrQEClvC18GjxGikWDE=; b=qXjNhUkdEXjf9LMFRvRRM+g6RFleYBazEsjjIxT8SbZcVzVKO5FsE4hpoSzwGsFlXgiA +y1tZwaaFvqMvGPTngoU5EAECa4AJE+sArFXK5bz6y3JtZyf6kTpz/1gZVhHLlECxTxc5 BXVaytBY2U3A0/CYmeZhuV492De/RrzT0pvDWitDAw5bc+ECP8H5WE8lF80ykg8ImDGMu d3MGD+Ou5XGIDD+UrV+I+9eTbVZ0dbteCkcmc5uwr+GxcHYUhw7kKSSCQ1e1WjP4BSCFz XzAUPaiovnrm0+V0HSSfVRZJ67fkJOuluFWVq9F0O3CozDCmGvCknYSNc8LOmQu0Juw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass header.d=linutronix.de header.i=@linutronix.de header.a=rsa-sha256 header.s=2020 header.b=nO823rJK; dkim=pass header.d=linutronix.de header.i=@linutronix.de header.a=ed25519-sha256 header.s=2020e header.b=nm9SQ0M5; arc=none smtp.remote-ip=193.142.43.55 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 26C74606A31B for ; Sat, 24 Oct 2026 16:10:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 26C74606A31B Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=linutronix.de header.i=@linutronix.de header.a=rsa-sha256 header.s=2020 header.b=nO823rJK; dkim=pass header.d=linutronix.de header.i=@linutronix.de header.a=ed25519-sha256 header.s=2020e header.b=nm9SQ0M5 Date: Sat, 24 Oct 2026 18:10:29 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1792858231; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=ufq3sDd1FSxfZgFeudS3ne2WlrQEClvC18GjxGikWDE=; b=nO823rJK/hrW8zpXfwD6pgjJdbnmsxKRgX5u/CezGNXmEUnmIFOOpaAB9aDJtqXLbUKwkS 7PEYQh0RhZNerKDwSGRXG4Q0UKwpP0XylFGWgz5QUA6gTY1XZLzou2E2Bj7n6CS2zxIhwf kFmGoop9SGKlCE1Naw9uZe0M5XuA9wql/8oXGbFGELTQBxFeJsggxqVkvVUT9flKov3V/o n9QBtM3G9/X6wfdJ+HwXrp32f/yukm3y8qKT1dczlbjdsFyxVNTz2CXDN4tjRfBsbWDDQ4 tge8gpl7QYnJd6Yy95+M+6u/6WvJNSfQEsqWzY42YEVvDRLUGl2at/ZqiSDokw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1792858231; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=ufq3sDd1FSxfZgFeudS3ne2WlrQEClvC18GjxGikWDE=; b=nm9SQ0M5yfWirs7prXy5T3C+odi5UcRnCfcA3m7bvPsk8j6k+rcCZW9RjHPXC/DSn9JrnG aNu1HErekdLGRzCg== From: Sebastian Andrzej Siewior To: Andy Shevchenko Cc: linux-kernel@vger.kernel.org, Andrew Morton , Kees Cook , Petr Mladek , Rasmus Villemoes , Sergey Senozhatsky , Steven Rostedt , Tycho Andersen , Namhyung Kim Subject: Re: [PATCH v5 2/2] kallsyms: Don't leak pointers for unresolved symbols Message-ID: <20261024161029.a52VJ8Bg@linutronix.de> References: <20261023-vsprintf_kallsym-v5-0-57ff92187c1d@linutronix.de> <20261023-vsprintf_kallsym-v5-2-57ff92187c1d@linutronix.de> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: On 2026-10-24 13:07:09 [+0300], Andy Shevchenko wrote: > > > - return sprintf(buffer, "0x%lx", address - symbol_offset); > > + return sprintf(buffer, "0x%p", address - symbol_offset); > > Hmm... Do we need a 0x here? I believe it's embedded into %p output, no? No, it does not. The %p does a fix digit size (different between 64 and 32 bit) without the 0x prefix. Sebastian