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[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: netdev@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