From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) (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 C24F81D0950 for ; Tue, 5 Nov 2024 10:45:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.200 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730803521; cv=none; b=Nq/5xW878ep2HuPCOY5DltKj06w2uO7RNBmRYpYphGSGx00D24JLp3/7js/VgUE/d4JJAiCZtLaqGChQusxavYvtbIh2GOtu0JKeSEPraGYdLMzajiyiyFQbgvTgY0qJYD5oqqfGDKTUqUg7LkSVS84xFNZZ3edyiaxoxp1uvXw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730803521; c=relaxed/simple; bh=zrTsAV5vLe0uxXcWRVClt59ESYnXvbZWodrvo9fD7k8=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To:Cc: Content-Type; b=nPvhxx3o1dPlGt7jXMd5sBwd9OjRjFZc9l8NeSZ1pMMGt+QBCksaDmlH/G0lHmrkaBFlZUUQHo5iAusVMU+6OMdim6FTEH51O4AWcmA5AFn0TWfJ32JQ/Y2IWHSLeI/8Gu+Eiy+1c9oR3BI4Q02Q3ckC4EVDYKCB6MhEoLjAnzQ= 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=209.85.166.200 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-f200.google.com with SMTP id e9e14a558f8ab-3a6bf539ceaso24392055ab.1 for ; Tue, 05 Nov 2024 02:45:18 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1730803518; x=1731408318; 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=IZ2ZEmKkEGBah3IP5OP7lq/If4Hy9itJVErTmZIj6i4=; b=iYYfTSKMLG8UvSrzd0q5L74XDQlqONGAKBt6GAyqU2uXOGyEeFpbtm55o0QacSuI6f HzC7J27JvJkfGJz5j5DbcC19BbCKpXSZIbjBKTtEhXOQvGuZBtiWDz++MSHuQ4K+LWmU csXLoftlh2KztjWaXnac2ioH1AqYmb7UswNj0ymf7KHCoh2O+X2mul93b6Oc4i4+TNyY t0wkJrDtcmpBH68CWTkfpwD8IF6CDqDFTNc3iSKipyRXLoUxkqjzfj3Fc4f5c0G1pe3U PvFmgod0lAFKjPxwesxgrWqiQa+GiCdiVq6bfA7ZyZBI0q86q4gOFMFKM4c23noJ64cX cL6w== X-Forwarded-Encrypted: i=1; AJvYcCVuxrbAA9GzQrjhpeWG46U41qG3bWTdG0LqDFksmppzzaH3NkCWU4hIqDzdl4sKdEBZdLIXgY2N8/sIrPg=@vger.kernel.org X-Gm-Message-State: AOJu0Yy71pXSD0kETVwTFVJg64yIstozFhDLSuZ4icL57KClyeJHxYNr OMSZSBn6QEkAsY11JVmFMlnN0FEo/CQMfJNLWDyU+nSiQbutaAtnOUEj5NREUws5JCC/KQ3pB79 beKT1juTM5D1ndQTSPim7NgOSYq5tTA1fHgFE1ZNqunYdBAVJq5TTeKc= X-Google-Smtp-Source: AGHT+IHIyUl8wEuF87GVyfMyb85wK2asPyPlVhLNel0fxdN9Kt82s0JhOnd+4caVjZopihN3r+FwBAEypo6gyTI9neMOrXkADoxn Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:3886:b0:3a3:a639:a594 with SMTP id e9e14a558f8ab-3a6a94a162dmr133746925ab.4.1730803517848; Tue, 05 Nov 2024 02:45:17 -0800 (PST) Date: Tue, 05 Nov 2024 02:45:17 -0800 In-Reply-To: <20241105104500.3206-1-hdanton@sina.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6729f73d.050a0220.2edce.1509.GAE@google.com> Subject: Re: [syzbot] [block?] possible deadlock in __submit_bio 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 Sun, 03 Nov 2024 14:19:28 -0800 >> syzbot found the following issue on: >> >> HEAD commit: f9f24ca362a4 Add linux-next specific files for 20241031 >> git tree: linux-next >> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16749340580000 > > #syz test linux-nex f9f24ca362a4 "linux-nex" does not look like a valid git repo address. > > --- x/block/blk.h > +++ y/block/blk.h > @@ -72,8 +72,6 @@ static inline int bio_queue_enter(struct > struct request_queue *q = bdev_get_queue(bio->bi_bdev); > > if (blk_try_enter_queue(q, false)) { > - rwsem_acquire_read(&q->io_lockdep_map, 0, 0, _RET_IP_); > - rwsem_release(&q->io_lockdep_map, _RET_IP_); > return 0; > } > return __bio_queue_enter(q, bio); > --- x/block/blk-core.c > +++ y/block/blk-core.c > @@ -358,8 +358,6 @@ int __bio_queue_enter(struct request_que > goto dead; > } > > - rwsem_acquire_read(&q->io_lockdep_map, 0, 0, _RET_IP_); > - rwsem_release(&q->io_lockdep_map, _RET_IP_); > return 0; > dead: > bio_io_error(bio); > --