linux-kernel - Re: [PATCH net] nfc: nci: Fix uninit-value in nci_rx

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Date: Fri, 05 Apr 2024 08:38:29 -0700
From: syzbot <syzbot+d7b4dc6cd50410152534@...kaller.appspotmail.com>
To: ryasuoka@...hat.com
Cc: ryasuoka@...hat.com, syzkaller-bugs@...glegroups.com, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH net] nfc: nci: Fix uninit-value in nci_rx_work

> #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

want either no args or 2 args (repo, branch), got 5

>
> diff --git a/net/nfc/nci/core.c b/net/nfc/nci/core.c
> index 0d26c8ec9993..b7a020484131 100644
> --- a/net/nfc/nci/core.c
> +++ b/net/nfc/nci/core.c
> @@ -1516,7 +1516,7 @@ static void nci_rx_work(struct work_struct *work)
>  		nfc_send_to_raw_sock(ndev->nfc_dev, skb,
>  				     RAW_PAYLOAD_NCI, NFC_DIRECTION_RX);
>  
> -		if (!nci_plen(skb->data)) {
> +		if (!skb->len || !nci_plen(skb->data)) {
>  			kfree_skb(skb);
>  			break;
>  		}
>