From nobody Fri Apr 8 13:56:42 2022 X-Original-To: net@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id E2A611A953B2 for ; Fri, 8 Apr 2022 13:56:42 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4KZftf5NQWz3trK for ; Fri, 8 Apr 2022 13:56:42 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 95AEF261BE for ; Fri, 8 Apr 2022 13:56:42 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 238DugvC040319 for ; Fri, 8 Apr 2022 13:56:42 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 238DugTg040318 for net@FreeBSD.org; Fri, 8 Apr 2022 13:56:42 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 252165] usb network and mii bus media status race condition Date: Fri, 08 Apr 2022 13:56:42 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Many People X-Bugzilla-Who: ali.abdallah@suse.com X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: net@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Networking and TCP/IP with FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-net List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-net@freebsd.org MIME-Version: 1.0 ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1649426202; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=N0IHfsKfwXBY1rmLcS9KKRo76hGC9VPq7nnJvfRwUl0=; b=SNJTrevYy6ltNbnfyy+U3qZ8U3mWG3tlT5PtD2C4x5nlC3gs3iw/A9RMrl1npnQYI1qi8/ oMJh9Nnj5HjTMnsm0vPrJ0ywgmgyZTs8csxe/3ZBT2mktzCfxbLdrU8im7LhOx6AP2JOvN ARIf01Z30sBwbxSLpyfE+TxJmUv2qk8wna2zN8b/9i6sUFhhABFmx133oYc2bn9VnI2uSu ycCmntJmXMdPMe3mO6PSs2/ykkZ24ielGv3w1TAvnPZ7PMbHFdPykoOfgdym1m3kqFT48r a5vPtpZoa2SzISQXNLkFC78RKNIfgIgNyEtLMYNs/hxdRrlShn5Z3tt6M3/vig== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1649426202; a=rsa-sha256; cv=none; b=Ze6eWBZwBV0RCoAw6WdXcCnJsg/zMOoBiuPhshq83OZpc7IEcAZMx+lBxZa6e4+0IaA0bd 5femZ6oxw14n1Ql0px4J5Cuium66rxGRbqeKDXwq6ryu7MRT84Aoi94G//RSVwumi+IIGK 15kez24RZD7SF7smJCwrOfaD9tkkVqZrVvq0ThBosjJPmiNYxqjjoAsMIWcDPJ8jEtUE9n UYqD4AtK/sfuyE38ZcTN61oYFCDSVvDXXulf6JZvhJ+fWMfVnfbFmadPmyDHUSNWzXtFtv lJyh9oVsz3Mqfjjfh0zu6hIMuexqdoTOpGTF1uqsx6V0ndFedOuWDWRikhvY/Q== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D252165 --- Comment #17 from Ali Abdallah --- After digging further into the code, I'm still unable to understand how the inversion described in comment 14 is even possible... On a spare system T430 with a USB ethernet, I've compiled the kernel with=20 options WITNESS options INVARIANTS options INVARIANT_SUPPORT options DEBUG_LOCKS options DIAGNOSTIC The up/down link issue is even more frequent with the debug kernel, but all= I see is=20 if_delmulti_locked: detaching ifnet instance 0xfffff8001880b800 ue0: link state changed to DOWN ue0: link state changed to UP ue0: link state changed to DOWN ue0: link state changed to UP ue0: link state changed to DOWN ue0: link state changed to UP This issue is driving me crazy, any fbsd kernel locking expert to help here? --=20 You are receiving this mail because: You are the assignee for the bug.=