From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out203-205-251-53.mail.qq.com (out203-205-251-53.mail.qq.com [203.205.251.53]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B2E5A1851 for ; Sun, 14 Jan 2024 07:44:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=qq.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b="rfMjmtNg" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qq.com; s=s201512; t=1705218233; bh=g4HSzc2M0ny/+L0szdplZvYETEz+7h4AeVQZqAnMmP4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=rfMjmtNgJCzrsjggjg+ozENAJgfJoN5129bWl/gO8kUDQi2E/Yoo2WSCDDAla8ne/ 70GfkNrKXtc0lCY7JeJSB8aq1iP6eUfG64mogLu+Y2bnFEhEu9RLpJgGeS8L408sHd IVyCQA5QOgZVCyL6VIx69/ayOKL2A0jEZ6WnNDOc= Received: from pek-lxu-l1.wrs.com ([111.198.225.215]) by newxmesmtplogicsvrszb9-1.qq.com (NewEsmtp) with SMTP id 8E52D618; Sun, 14 Jan 2024 15:35:37 +0800 X-QQ-mid: xmsmtpt1705217737tskreob6c Message-ID: X-QQ-XMAILINFO: OKkKo7I1HxIeG6JtRWKoTqljrhnatsegM86XQjJFeIurALyP7DZzxF+e5L+egf uqzzOC3TJyrlRtk7lgmFE8zKyFxGV5yQ3InTwsYNTf7KKj1hnRBNDbYOlKHrIdIEGdW3tY0vRNj3 BBGwRh2LrH/rONw3SBMDMMai2ZJvexoK69cpjLjZgLepRGuc11pD5P+0DRhwu0PZhzodRr0ns/cF +rVaX5A8yv9L4qd6annb0/i6budywA/8ekQRMQrVkAgGB4BUXHHWKnjWggs0DINbmxENpqGzt2DE qTqa3s9TTw2MwSReyhn3ZYvKYYC2pAY9IRh0UPc2G5VV19hs+NwL9l7tMSU0T2XtOGmRXrp0B11T NXLRWucPHeWHAXxG3163eM9IEezrALcFTU+XUBktu7pctNrpVMJC9lBGymzv6NsI6N86gaZqpSPg PNzMiqjKLCCcApVe6gpq88pVpYUUy1ny1Vp4jC4L/mYsR/QpBP00FXssbv6s8UrUU67QLjnE5c6u 16uxxaDPulSljRAl+buKyNONsE+wYARWuNMupE1tyccG+erkLm4nppMkYIdygw5+rIx6gTbxpzDY rsMSp7ae4Vp7OJmqNmcSIzhZyHg1qKZ4uC3YR5DI4N0NV1nu9LVS6pwraPweHHzCKAQoYX9/MZeM oBSsXpV/fZ4NXJLFyshq0eqnNFKqNkn7hbyF5x3vKatQRZa6t3czRldDt1tqkvS+jqrvZyKiuzAk 4uXpkbYmZZjlwdegoswzqnhNruokC3a4cn9SjxFwSU0bQUMtCoO+qFcN4qJFPsUJWA90wR+33Kim SYfikVCQ95Z1vtJNgEK+92mX0eYUI0HCdMrSNi2KKSh2FIBjlU8NGr/EBZ4hX1eM3l7voYCZlB0D RIHTALfu0YBrWkwqQvZlCC8KaAY+DxTztJoZdMUxjPrHWcRn3zjta1we2I8qFip4TeQuF79wYI X-QQ-XMRINFO: Nq+8W0+stu50PRdwbJxPCL0= From: Edward Adam Davis To: syzbot+2b131f51bb4af224ab40@syzkaller.appspotmail.com Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [net?] [nfc?] INFO: task hung in nfc_targets_found Date: Sun, 14 Jan 2024 15:35:38 +0800 X-OQ-MSGID: <20240114073537.2627915-2-eadavis@qq.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <000000000000fb160f060ed71da5@google.com> References: <000000000000fb160f060ed71da5@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit please test task hung in nfc_targets_found #syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git acc657692aed diff --git a/net/nfc/nci/core.c b/net/nfc/nci/core.c index 6c9592d05120..9a277228a875 100644 --- a/net/nfc/nci/core.c +++ b/net/nfc/nci/core.c @@ -145,6 +145,8 @@ inline int nci_request(struct nci_dev *ndev, { int rc; + if (test_bit(NCI_UNREG, &ndev->flags)) + return -ENODEV; /* Serialize all requests */ mutex_lock(&ndev->req_lock); /* check the state after obtaing the lock against any races