From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-qk1-f176.google.com (mail-qk1-f176.google.com [209.85.222.176]) (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 2375019F485 for ; Tue, 22 Oct 2024 14:29:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.222.176 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729607345; cv=none; b=oHiMaRUniIhHZiDm9yGlT9xrDt0yCTyLHvuRIhCZMRIzfq94bahG3fgxR1fKYUvM6nEh/jqT9kJnvolgcI0AncbThozdxz/KFRwxDQts3/9wHAsW6wsxyEDgXwkprxE0G2caEIjFLWOVwP3Ke4EYUS8k9aZbUYZ3q3A4A0BSSuI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729607345; c=relaxed/simple; bh=FWIUzDJsMLIU8LmwxOdULgE14BEiPOqKtaJ7NvsJTKY=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=gdp8jekCof/ts5yjH3l2Q0T1K6umSQGS2QvFsZALHEiPYLUj7T/s7CsKCHtQaLhzoqNvNKYH8z3NPKxbnY/++6lL4ZpUSLrTYigSGMs88+eLVtagbmZwJaa0IajKhH07fZfnB5VGhUvvV80RkWwEg60VLE+ivACLG18yIVj44gw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ziepe.ca; spf=pass smtp.mailfrom=ziepe.ca; dkim=pass (2048-bit key) header.d=ziepe.ca header.i=@ziepe.ca header.b=Oxurvs7y; arc=none smtp.client-ip=209.85.222.176 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ziepe.ca Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ziepe.ca Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ziepe.ca header.i=@ziepe.ca header.b="Oxurvs7y" Received: by mail-qk1-f176.google.com with SMTP id af79cd13be357-7b1511697a5so365751785a.2 for ; Tue, 22 Oct 2024 07:29:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ziepe.ca; s=google; t=1729607343; x=1730212143; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=QBQs0VktZnZLMvhoI85WO8zPMaVfIDxzSx1BsoDRynk=; b=Oxurvs7yXvalAKMsBc/nP+/D+5la6Rkxlhdm9Ddkq8teH7t+oHpH7ZPJ+mVwHFfk5W wxpWq5N/4aRo4KVxiOisV/uySj5b8oJ3ynZNKVOd3clM1EmoUaX7yHLk8CnFODVP13eb N7fht01EuJdQr+AIuw6NEB71zGLc/POVDDPOZHy4hK2fMwM9nr4wlySNrWHEkgUi9jlN feWU3ztMlmnHFVnIRphfcFybCCaMbczHzYOoWoeL8mg9ryltTKNVU1a7VqZqb735OtLo axITeO/szettRnvohX4iLo+FINW4Bm7Db00hnc4vdqlOpcuwYfRYjpIs1QFXXye7dlsC /Qqg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1729607343; x=1730212143; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=QBQs0VktZnZLMvhoI85WO8zPMaVfIDxzSx1BsoDRynk=; b=n7uCMkkm5H3dV8P4H/fMu//mZb2X0ocf/SzED2DtoET8ZebLLRT5V21iFWOJnt5Rxx 3BXLizmzm4yuiskjMW+dBuoQ/QjGtSJT7OWB85i69tTp1xn0qGo5XLQGCUoglaM8bhLp 9nHq04987WVw9/dyqChH898hDuJAvrAZt/0gtl5D6vme3KRj/Nc3+l5PU9Tc7vty0cUP ZamyFqNZuj0PWxQoqo7f2CR3yOrHUW273/PJoDJ1//YLmkpGX1uuDkATEZCccMHqO4S8 kBZcXA/u0hE+4ISOjepImj0UDAWadB7zEU2sbU9eHSP4f9OklTbtz3mJwUv0wGfb+Usp SABQ== X-Forwarded-Encrypted: i=1; AJvYcCXnlSnsx7VT5gW4Pxvv76QaMaQ8rlcooIef7jz3s7lGaOa6ozysShmnj1388W34s+jaPXu0JGWfoJ6TPu4=@vger.kernel.org X-Gm-Message-State: AOJu0YxwzjdRzO0g1hI471k5lgigC/yD7tH7VrqyHJPLRUf347xNWrj+ cnE0/Qe4gzaqXRLwBm2rRrkXpuPw4uWXGfG+INyXdDAhOLIvePh0MTDtskQYkPU= X-Google-Smtp-Source: AGHT+IH8N2eHg9nw+vHszANEXOFWLyJrLXfEthKl81Z7ZBHmwyuw+1iu3EyqKAdTOb/FJU0+FqZosQ== X-Received: by 2002:a05:620a:40c2:b0:7b1:47bb:5334 with SMTP id af79cd13be357-7b157be0c1fmr1774276585a.40.1729607342834; Tue, 22 Oct 2024 07:29:02 -0700 (PDT) Received: from ziepe.ca (hlfxns017vw-142-68-128-5.dhcp-dynamic.fibreop.ns.bellaliant.net. [142.68.128.5]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7b165a037fbsm285619185a.60.2024.10.22.07.29.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Oct 2024 07:29:01 -0700 (PDT) Received: from jgg by wakko with local (Exim 4.95) (envelope-from ) id 1t3Fsb-003rIb-1c; Tue, 22 Oct 2024 11:29:01 -0300 Date: Tue, 22 Oct 2024 11:29:01 -0300 From: Jason Gunthorpe To: syzbot Cc: leon@kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [rdma?] INFO: task hung in add_one_compat_dev (3) Message-ID: <20241022142901.GA13306@ziepe.ca> References: <671756af.050a0220.10f4f4.010f.GAE@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <671756af.050a0220.10f4f4.010f.GAE@google.com> On Tue, Oct 22, 2024 at 12:39:27AM -0700, syzbot wrote: > 1 lock held by syz-executor/27959: > #0: ffffffff8fcbffc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] > #0: ffffffff8fcbffc8 (rtnl_mutex){+.+.}-{3:3}, at: __rtnl_newlink net/core/rtnetlink.c:3749 [inline] > #0: ffffffff8fcbffc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_newlink+0xab7/0x20a0 net/core/rtnetlink.c:3772 There is really something wrong with the new sykzaller reporting, can someone fix it? The kernel log that shows the programs: https://syzkaller.appspot.com/x/log.txt?x=10d72727980000 Doesn't have the word "newlink"/"new"/"link" etc, and yet there is an executor clearly sitting in a newlink netlink callback when we crashed. We need to see the syzkaller programs that are triggering these issues to get ideas, and for some reason they are missing now. Jason