linux-kernel - RE: [PATCH v4 net-next 05/15] ptp: netc: add PTP_CLK_REQ

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID:
 <PAXPR04MB8510D5DCE81CD109FD4017C48833A@PAXPR04MB8510.eurprd04.prod.outlook.com>
Date: Wed, 20 Aug 2025 02:29:30 +0000
From: Wei Fang <wei.fang@....com>
To: Frank Li <frank.li@....com>
CC: "robh@...nel.org" <robh@...nel.org>, "krzk+dt@...nel.org"
	<krzk+dt@...nel.org>, "conor+dt@...nel.org" <conor+dt@...nel.org>,
	"richardcochran@...il.com" <richardcochran@...il.com>, Claudiu Manoil
	<claudiu.manoil@....com>, Vladimir Oltean <vladimir.oltean@....com>, Clark
 Wang <xiaoning.wang@....com>, "andrew+netdev@...n.ch"
	<andrew+netdev@...n.ch>, "davem@...emloft.net" <davem@...emloft.net>,
	"edumazet@...gle.com" <edumazet@...gle.com>, "kuba@...nel.org"
	<kuba@...nel.org>, "pabeni@...hat.com" <pabeni@...hat.com>,
	"vadim.fedorenko@...ux.dev" <vadim.fedorenko@...ux.dev>,
	"shawnguo@...nel.org" <shawnguo@...nel.org>, "s.hauer@...gutronix.de"
	<s.hauer@...gutronix.de>, "festevam@...il.com" <festevam@...il.com>, "F.S.
 Peng" <fushi.peng@....com>, "devicetree@...r.kernel.org"
	<devicetree@...r.kernel.org>, "netdev@...r.kernel.org"
	<netdev@...r.kernel.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "imx@...ts.linux.dev" <imx@...ts.linux.dev>,
	"kernel@...gutronix.de" <kernel@...gutronix.de>
Subject: RE: [PATCH v4 net-next 05/15] ptp: netc: add PTP_CLK_REQ_PPS support

> > +static int netc_timer_init_msix_irq(struct netc_timer *priv) {
> > +	struct pci_dev *pdev = priv->pdev;
> > +	char irq_name[64];
> > +	int err, n;
> > +
> > +	n = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSIX);
> > +	if (n != 1) {
> > +		err = (n < 0) ? n : -EPERM;
> > +		dev_err(&pdev->dev, "pci_alloc_irq_vectors() failed\n");
> > +		return err;
> > +	}
> > +
> > +	priv->irq = pci_irq_vector(pdev, 0);
> > +	snprintf(irq_name, sizeof(irq_name), "ptp-netc %s", pci_name(pdev));
> > +	err = request_irq(priv->irq, netc_timer_isr, 0, irq_name, priv);
> 
> https://elixir.bootlin.com/linux/v6.11.7/source/kernel/irq/manage.c#L2109
> 
> request_irq can't copy irq_name, so irq_name is out of scope after
> netc_timer_init_msix_irq() return.
> 
> cat /proc/interrupt will show garbage string for ptp timer.
> 
> use devm_kasprintf().
> 

Thanks, I will fix this issue.