Received: by 10.213.65.68 with SMTP id h4csp1100896imn; Wed, 4 Apr 2018 12:36:47 -0700 (PDT) X-Google-Smtp-Source: AIpwx49trArmaAIflS8DGr3aVwdBjYmNfDA8WkpD3jUnqauSc8Rq0TTdpGdwRE8gZtz8tgZLD4F1 X-Received: by 2002:a17:902:2c83:: with SMTP id n3-v6mr20227687plb.317.1522870607802; Wed, 04 Apr 2018 12:36:47 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1522870607; cv=none; d=google.com; s=arc-20160816; b=gQyVgFhGaWWKFkcKkRp3+WCbcaR7La4B56aDustS7zaHUbvA4pY4htlpBRreGQODD/ NmBJXlMGz2UxNAhNqkW9J2bp9MlxgweeNW8J2rCLOMInK4Oz5M3pHCrFgBMPLkr4cqTx c2GL4r8JN8KFCPQp9UzUEvg92tGjIrTscmcwSb/EBAs5GflJ0Jdc+72aCcR05kqLweCd vXXSSQrgKWbhvtJAgJNKQ0KJPt43U5x/iAgYxdQK5zZHVZZFqL9Qps8oxmok9Sftq2lZ gr5HcIvmY6PkiGvU4oxurXSxmu0eUBovIOyTPfFQI7BNkLeEzNmW11OaPxKXa1J/OF1K 2Z8w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:dkim-signature:arc-authentication-results; bh=3coCTTyct1IpdT3WFi6A68h7x5BmIHdVdWUNdeiMfoY=; b=jGUWm5n/Q3SbPekj+T1xl5zVziN7iWp0tzk0jbkXKYuRTPpQQDCsRSCSGTob1LejA2 YntkfmkDlaFzDczNI94e43MfhbxS0myH0wS+RDQa8/d8knRkmwzizMxkBOVUQ/OSE5Qd JlngzelJrfKGsKcnUdrh48VImsx7zrJKQL6B0bMOBSvXDctYjzHPEiZksRMu09Kf/8L9 EWJnl31mKEGsOTuSQ4AzPIacLQEcFFc5kexN4qREAqY/44N0BYfJQYMQB3c5AFvWm2/P qE+/uo9Wnq8pLeJuPN3nbdmJEBI8BIWPospysZs0LUlraO0Hrj7GUN5fv8Fesii8YpZl abFg== ARC-Authentication-Results: i=1; mx.google.com; dkim=fail header.i=@infradead.org header.s=bombadil.20170209 header.b=V/n/GWyb; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id k196si4111930pgc.700.2018.04.04.12.36.32; Wed, 04 Apr 2018 12:36:47 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=fail header.i=@infradead.org header.s=bombadil.20170209 header.b=V/n/GWyb; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751874AbeDDTfI (ORCPT + 99 others); Wed, 4 Apr 2018 15:35:08 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:39416 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751283AbeDDTfH (ORCPT ); Wed, 4 Apr 2018 15:35:07 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=3coCTTyct1IpdT3WFi6A68h7x5BmIHdVdWUNdeiMfoY=; b=V/n/GWybClp1EM3PZfwg1wXAi j+H9kIATz9KJfjEfakeOCgwwtPL0glMqICCrOgQyUD1ux8pvCE75odhU8amdHlOwEqytcwTm1wIVf lJx1PlDE9GMDIdk/8dizdCLb+EIyx5S63TSgiwAcNKGdfOvMFQ+llQ4pkaGENdPjJIxFlAgKFAIOu QzZ7FqgBlomv/j9Ciut/SjrSvsP/ZvH/9b6LeUdW9q/1w1LfozPVpoIeWc9R+pTsqDJVmfEQ09GVc eHyLEOjSzgSoKRAB+Ki6Sa01mXaDTFYbzh3wfhTKKu7Rh9PJAxQaUvZ8LrapbFt2sg7OkIBsqWwGD f6I3Tv6GA==; Received: from willy by bombadil.infradead.org with local (Exim 4.90_1 #2 (Red Hat Linux)) id 1f3oBU-0004gx-Md; Wed, 04 Apr 2018 19:35:04 +0000 Date: Wed, 4 Apr 2018 12:35:04 -0700 From: Matthew Wilcox To: Dmitry Vyukov Cc: syzbot , Theodore Ts'o , linux-fsdevel , LKML , syzkaller-bugs@googlegroups.com, Al Viro Subject: Re: WARNING in up_write Message-ID: <20180404193504.GA7715@bombadil.infradead.org> References: <001a1148578c10e4700568e814eb@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.2 (2017-12-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Apr 04, 2018 at 09:24:05PM +0200, Dmitry Vyukov wrote: > On Tue, Apr 3, 2018 at 4:01 AM, syzbot > wrote: > > DEBUG_LOCKS_WARN_ON(sem->owner != get_current()) > > WARNING: CPU: 1 PID: 4441 at kernel/locking/rwsem.c:133 up_write+0x1cc/0x210 > > kernel/locking/rwsem.c:133 > > Kernel panic - not syncing: panic_on_warn set ... Message-Id: <1522852646-2196-1-git-send-email-longman@redhat.com>