From owner-freebsd-current@FreeBSD.ORG Mon Nov 25 08:27:58 2013 Return-Path: Delivered-To: current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 0568856D for ; Mon, 25 Nov 2013 08:27:58 +0000 (UTC) Received: from mail-we0-x236.google.com (mail-we0-x236.google.com [IPv6:2a00:1450:400c:c03::236]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 9DEDB2450 for ; Mon, 25 Nov 2013 08:27:57 +0000 (UTC) Received: by mail-we0-f182.google.com with SMTP id q59so3569228wes.27 for ; Mon, 25 Nov 2013 00:27:55 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=+vXPC4vB5Ht8rQF4rR/aTExneipV1C8J8Ddi0a82Ibk=; b=dUYwN/uH87+uzplaoiBPw9aeC07Ct8pySR/jhpq8omALV67HqDwGLIIMNwE5RbXzRP 6bpfPRhKvhhZZdALa/KkwJXZ7Afrvl68bRZGD2qTKoq+xoeO7kUv3C1f5t58/Peqg9Ft y8qpN6aDPWguIwDZXL5nE3LsXCQoHW5AGYxPyGc5LBJ8jCR3YcU5kjEdnn0Iu3SJUNOV QJYghyHRT79yfAglY1rcYRIWv+YUc6cH3qVoU2wJt3ya5Wlz9f0AOkPp6IBnxRtF5ZwD IJkqrWQSjs/EAi0TgLSTbO+n9AZCHhgaXVrTZIMShKs4JbwLcf5ImeqrDGivTusuMaMZ CfYw== MIME-Version: 1.0 X-Received: by 10.180.9.74 with SMTP id x10mr11713477wia.56.1385368075823; Mon, 25 Nov 2013 00:27:55 -0800 (PST) Received: by 10.217.0.143 with HTTP; Mon, 25 Nov 2013 00:27:55 -0800 (PST) Date: Mon, 25 Nov 2013 12:27:55 +0400 Message-ID: Subject: panic: sbdrop in sbcut_internal From: Sergey Kandaurov To: current Content-Type: text/plain; charset=ISO-8859-1 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.16 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 25 Nov 2013 08:27:58 -0000 Seen this on head while doing two `/etc/rc.d/netif restart wlan0' in parallel. Thanks our shiny new compiler I can not examine local vars. $FreeBSD: head/sys/kern/uipc_sockbuf.c 256185 2013-10-09 11:57:53Z glebius $ Unread portion of the kernel message buffer: <118>Nov 24 20:35:52 omg wpa_supplicant[55133]: ioctl[SIOCS80211, op=26, val=0, arg_len=0]: Operation not supported panic: sbdrop cpuid = 0 #2 0xffffffff805904b4 in panic (fmt=) at /usr/src/sys/kern/kern_shutdown.c:754 #3 0xffffffff805fe2eb in sbcut_internal (sb=, len=) at /usr/src/sys/kern/uipc_sockbuf.c:859 #4 0xffffffff805fd368 in sbflush_internal (sb=0xfffff8000b4b0348) at /usr/src/sys/kern/uipc_sockbuf.c:821 #5 0xffffffff805fd4a2 in sbdestroy (sb=0xfffff8000b4b0348, so=0xfffff8000b4b02b8) at /usr/src/sys/kern/uipc_sockbuf.c:339 #6 0xffffffff805ff300 in sofree (so=0xfffff8000b4b02b8) at /usr/src/sys/kern/uipc_socket.c:752 #7 0xffffffff805ff7d2 in soclose (so=) at /usr/src/sys/kern/uipc_socket.c:837 #8 0xffffffff805502f9 in _fdrop (fp=0xfffff8000b4d5370, td=0x0) at file.h:342 #9 0xffffffff80552b97 in closef (fp=, td=) at /usr/src/sys/kern/kern_descrip.c:2315 #10 0xffffffff805505f5 in closefp (fdp=0xfffff8000b3bb800, fd=, fp=0xfffff8000b4d5370, td=0xfffff8000b036490, holdleaders=) at /usr/src/sys/kern/kern_descrip.c:1159 #11 0xffffffff807c23c7 in amd64_syscall (td=0xfffff8000b036490, traced=0) at subr_syscall.c:134 (kgdb) f 3 #3 0xffffffff805fe2eb in sbcut_internal (sb=, len=) at /usr/src/sys/kern/uipc_sockbuf.c:859 859 panic("sbdrop"); (kgdb) list 854 mfree = NULL; 855 856 while (len > 0) { 857 if (m == 0) { 858 if (next == 0) 859 panic("sbdrop"); 860 m = next; 861 next = m->m_nextpkt; 862 continue; 863 } -- wbr, pluknet