From nobody Mon Mar 21 18:07:59 2022 X-Original-To: bugs@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 A63571916676 for ; Mon, 21 Mar 2022 18:08:00 +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 4KMjJw3dQqz3RKd for ; Mon, 21 Mar 2022 18:08:00 +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 5951D1FFC0 for ; Mon, 21 Mar 2022 18:08:00 +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 22LI80dc060335 for ; Mon, 21 Mar 2022 18:08:00 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 22LI80PJ060334 for bugs@FreeBSD.org; Mon, 21 Mar 2022 18:08:00 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: bugs@FreeBSD.org Subject: [Bug 262587] panic: lock (sleep mutex) umtxql not locked @ /usr/src/sys/sys/umtxvar.h:262 on 14-current master-n253798-8cdecdecb43 Date: Mon, 21 Mar 2022 18:07:59 +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 Only Me X-Bugzilla-Who: markj@FreeBSD.org X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@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: Bug reports List-Archive: https://lists.freebsd.org/archives/freebsd-bugs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-bugs@freebsd.org MIME-Version: 1.0 ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1647886080; 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=Oq51kXP5nsK0kuB7X+986po8fvV9t+wO7MbRdfCf80c=; b=V97PrifTAt23xiZExkMKInsJVh7imC6tvk7rik2QvBkCyF82zXD97Mxu5UMP/xDg8w77no pE18Y1dGrVS0UE1x+OoeE4wGt7QifMegOozC9nwP4bUS6X/GVr0PebwwJ36MniI5Du086V cgjHJjBXLTaEA7u6qa0lt+vfSRGsiYrHD/5ZY3K8TF/nGhZM7ucSJX9CE2ugGETeaeA50Y nQ+G/rDczriNuS/rDzv9hz8A+LUxy/866MECyS+nq3kZPbvJbOpjggzUF4I+QtYenfiiLN nr0yX590C3L7v4qeKswrLi57VP6UvHYqkAGFFShSVe36IdB3fzOau0V4Xafn9Q== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1647886080; a=rsa-sha256; cv=none; b=LEOY0qsiTk3eaqreaQ2RWVWHEaG94gSyIFe6B2g21qUVVQDjcL15dY15IvfeaEjzGpaxYo 6Ao2frlXKSCjkXmrAiazThIndd5o6jPEPMS/c7HtlkTeBWAdoL1UH95HBZz7IiZ3TtE7KN 8S9oN06QDgjRjaX7UGExOhbYp+Or+c/fTmfscnQDqZpC0hqPQsSdexda6zejdHu+OIqk+h IeyL0f0lWL5CfKW1IwzFKebRpz2uI7wZSphoDL8f38UisT6Q5ew4Rs5NYt45JKeYkXln1n 5hoJRRO77FRgDw2WCkynjJrpxciWvuBTOOtyYLi/RuoOVVTNVD/BcMhhzAxbgg== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D262587 --- Comment #16 from Mark Johnston --- (In reply to Alexander Motin from comment #15) The lock can change if umtxq_requeue() moves the queue to a different hash chain. With PDROP, the subsequent umtxq_lock(&uq->uq_key) will lock the = new chain. Right now we are re-locking the old one. --=20 You are receiving this mail because: You are the assignee for the bug.=