From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f199.google.com (mail-il1-f199.google.com [209.85.166.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 76EE638FAD for ; Fri, 29 Nov 2024 23:23:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732922626; cv=none; b=gt0nGjvPw/6pRyYop4w2SQyoDdQ+Lt/l0KpSHDPKnvhrGmKxHu3bxqeYnjHkBVMiGQ1TBbe3zAcNwOyGn8R/h8Sq2pVJ8NH6n3IkGVqUyOe/V0aduLeDlZir8QUn3w74Eu/r5LsT/JNR6fe7KMMnsXgFPFVfAjo5ae90pb9DeHI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732922626; c=relaxed/simple; bh=xqq9+YO6rrkxyDevE8iK8koX8jXZf3TJAci0T4rD068=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To:Cc: Content-Type; b=EDFMPpx3+LFmJZZXHoe0gUPMbZommySZNOUs17zhZ/UXADyRY4IqGswolRQZucrTDFipUqwIxvXR5UPvxnsp1+kiKdKiWmV8Usu9HY4tZJYZ210ynZwJbwzbLBc0r0dJcWIRwugUx8Zs0s6+oxc7UTr1xeaZ/KqpX5iWxZ7H5Kc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-il1-f199.google.com with SMTP id e9e14a558f8ab-3a7e1e6d83fso6292585ab.3 for ; Fri, 29 Nov 2024 15:23:44 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1732922623; x=1733527423; h=cc:to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=P5fZyehtNpUgHHlACVplsP57vcviYvifugJncV3rDt4=; b=k8BCbK/hcyHT3no0eyzheIR4sOTf08or6BkDGzbYskRXQHQ+JwY3eL19XaSpRix8VH TycvLobyu8oXWqu6m1x4e8/sfFD75RUJ6sanrCcwWy5POyZ7aDg9nGdc70QlGq3ybHiW PlTxnQmS7+1VYk+LifShR+j0VN0NPeDdmMV/b6g9tUAjvbJVBQ5qgtZO8jV/mtyxPr6D R1H5rG1ueLPBtSnaZBbobsDiRKP1QAS3T4QXpKw5Mq5JwekZ96Cm6AMZOilbTrLIm4f1 6cUumYfOo8Y5bZd9t/Z8e9d/ln7tHPVqZA+vsqFPQxfePk/gOMQgMRn9bY/nBaOfz+Lq OF/w== X-Forwarded-Encrypted: i=1; AJvYcCVDp+ZJR57Mg0a+R3SsmeJv8da/h4tA5HJJk0unU+9zSpqEPP8y31u0pJutAbT0+1iGCwsgHGewbQLw0WE=@vger.kernel.org X-Gm-Message-State: AOJu0YxzdukZgtfrGaEtybBW2SYr42eEVv4oaXykjASObV3gQ0aNDdpX 18fNIsvOZigTYIsMLgtHJsCThyATJk6OvU/WBuFpzJz1tRW66NpLVTESvawXFC6ilDNidAReqM2 JEJDrsx63GJz/MrjPIz+YcRH8yFAGkDO8Qba0kax3UnpbMt2SdKewa8g= X-Google-Smtp-Source: AGHT+IGLtU6cJpRtNvcV62Rl8Y7ph51NONkiRM2lfW14Be6Lc+3VRgo2DuujWXOTdXuUbkHIL3z10CTjA+G6HVKd+pdsIVFfy6iD Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1c88:b0:3a7:70a4:6877 with SMTP id e9e14a558f8ab-3a7c554589fmr108756235ab.7.1732922623663; Fri, 29 Nov 2024 15:23:43 -0800 (PST) Date: Fri, 29 Nov 2024 15:23:43 -0800 In-Reply-To: <20241129232325.2100-1-hdanton@sina.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <674a4cff.050a0220.253251.00cf.GAE@google.com> Subject: Re: [syzbot] [netfs?] WARNING in netfs_retry_reads From: syzbot To: hdanton@sina.com Cc: hdanton@sina.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" > On Thu, Nov 28, 2024 at 11:27:24PM -0800, syzbot wrote: >> syzbot found the following issue on: >> >> HEAD commit: 85a2dd7d7c81 Add linux-next specific files for 20241125 >> git tree: linux-next >> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14e3a5c0580000 > > #syz test This bug is already marked as invalid. No point in testing. > > --- x/fs/netfs/read_collect.c > +++ y/fs/netfs/read_collect.c > @@ -619,8 +619,7 @@ ssize_t netfs_wait_for_read(struct netfs > > for (;;) { > trace_netfs_rreq(rreq, netfs_rreq_trace_wait_queue); > - prepare_to_wait(&rreq->waitq, &myself, TASK_UNINTERRUPTIBLE); > - > + smp_mb(); > subreq = list_first_entry_or_null(&stream->subrequests, > struct netfs_io_subrequest, rreq_link); > if (subreq && > @@ -628,6 +627,7 @@ ssize_t netfs_wait_for_read(struct netfs > test_bit(NETFS_SREQ_MADE_PROGRESS, &subreq->flags))) > netfs_read_collection(rreq); > > + prepare_to_wait(&rreq->waitq, &myself, TASK_UNINTERRUPTIBLE); > if (!test_bit(NETFS_RREQ_IN_PROGRESS, &rreq->flags)) > break; > > --