From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-183.mta1.migadu.com (out-183.mta1.migadu.com [95.215.58.183]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E38031DB548 for ; Fri, 27 Jun 2025 04:54:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.183 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751000061; cv=none; b=pKt9/cMwKQIjoE/9SoLqwC/ItilCM4zjozvylHXGTOaV/9+lMbCN7DQzFCp5mQ/T2ICveoRdwBdgtQxh7GSgNhoFYwU7tw1TIlrR4aPmaWC0U1Bjm6sz8Z6IbApvl1wkQSRj1whqljpLyicucDlxypwLyLLJKT/JVz1AMKP4dpY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751000061; c=relaxed/simple; bh=Mn91nD8N81a4I8LV9JExL3dkijp9Nz+10fd1guOSSOs=; h=Message-ID:Date:MIME-Version:Subject:To:References:From: In-Reply-To:Content-Type; b=lwAsYSs8LaLJ1E7H3Kk7Zjb9l9i6QL4KPyMGMsUc4YBnBnoZn2otF9I5od4Ajzf/dGAZp5b39IaS+2kBngckwNuNlEFJno7wR2frlqZ/EpjGRqNwdkyvgb4mLTMA3ullOcqSzflcPwwHqfwyfTSR+m9mjSD1qOWO9OaIh88NGTE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=n4Cv2HTp; arc=none smtp.client-ip=95.215.58.183 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="n4Cv2HTp" Message-ID: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1751000044; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=9a2vQ9ByAahXjvmC4vFJM4DGyfQ2okDu7nWB7feKJaE=; b=n4Cv2HTpgZ1pNqF5WzeMnnw8nyricFS+9qorvbjBMQH3ClH24QQ0iCthatcYUB5USRYdJN x4MYqa37vwXC4fJ0d6a96l9KnH30YgSV6UVSJvuWQxY15MHFCL4xTcaXOD43iqcSyrkTHa g/JA9erJRhMfxhgrMhQiiQr6AuCRVrU= Date: Thu, 26 Jun 2025 21:53:47 -0700 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Subject: Re: [syzbot] [rdma?] WARNING in rxe_skb_tx_dtor To: syzbot , jgg@ziepe.ca, leon@kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, syzkaller-bugs@googlegroups.com, zyjzyj2000@gmail.com References: <685e168e.a00a0220.2e5631.03f4.GAE@google.com> X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Zhu Yanjun In-Reply-To: <685e168e.a00a0220.2e5631.03f4.GAE@google.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT #syz test: https://github.com/zhuyj/linux.git v6.16_fix_rxe_skb_tx_dtor 在 2025/6/26 20:57, syzbot 写道: > Hello, > > syzbot has tested the proposed patch but the reproducer is still triggering an issue: > WARNING in rxe_skb_tx_dtor > > ------------[ cut here ]------------ > WARNING: CPU: 0 PID: 3034 at drivers/infiniband/sw/rxe/rxe_net.c:357 rxe_skb_tx_dtor+0x8b/0x2a0 drivers/infiniband/sw/rxe/rxe_net.c:357 > Modules linked in: > CPU: 0 UID: 0 PID: 3034 Comm: kworker/u4:10 Not tainted 6.16.0-rc3-syzkaller-ge9ef70b277ad #0 PREEMPT(full) > Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 > Workqueue: rxe_wq do_work > RIP: 0010:rxe_skb_tx_dtor+0x8b/0x2a0 drivers/infiniband/sw/rxe/rxe_net.c:357 > Code: 80 3c 20 00 74 08 4c 89 ff e8 c1 64 81 f9 4d 8b 37 44 89 f6 83 e6 01 31 ff e8 d1 e5 1d f9 41 f6 c6 01 75 0e e8 e6 e0 1d f9 90 <0f> 0b 90 e9 b4 01 00 00 4c 89 ff e8 45 97 fd 01 48 89 c7 be 0e 00 > RSP: 0018:ffffc900000079e8 EFLAGS: 00010246 > RAX: ffffffff88a26d8a RBX: ffff8880560d4500 RCX: ffff88801f722440 > RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 > RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff887bc1c4 > R10: dffffc0000000000 R11: ffffffff88a26d00 R12: dffffc0000000000 > R13: 1ffff1100ac1a8ab R14: 0000000000025820 R15: ffff888033440000 > FS: 0000000000000000(0000) GS:ffff88808d250000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00007f5e595acfc8 CR3: 0000000056029000 CR4: 0000000000352ef0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > > skb_release_head_state+0x101/0x250 net/core/skbuff.c:1139 > napi_consume_skb+0xd2/0x1e0 net/core/skbuff.c:-1 > e1000_unmap_and_free_tx_resource drivers/net/ethernet/intel/e1000/e1000_main.c:1972 [inline] > e1000_clean_tx_irq drivers/net/ethernet/intel/e1000/e1000_main.c:3864 [inline] > e1000_clean+0x49d/0x2b00 drivers/net/ethernet/intel/e1000/e1000_main.c:3805 > __napi_poll+0xc7/0x480 net/core/dev.c:7414 > napi_poll net/core/dev.c:7478 [inline] > net_rx_action+0x707/0xe30 net/core/dev.c:7605 > handle_softirqs+0x286/0x870 kernel/softirq.c:579 > do_softirq+0xec/0x180 kernel/softirq.c:480 > > > __local_bh_enable_ip+0x17d/0x1c0 kernel/softirq.c:407 > local_bh_enable include/linux/bottom_half.h:33 [inline] > __neigh_event_send+0x9b/0x1560 net/core/neighbour.c:1194 > neigh_event_send_probe include/net/neighbour.h:463 [inline] > neigh_event_send include/net/neighbour.h:469 [inline] > neigh_resolve_output+0x198/0x750 net/core/neighbour.c:1496 > neigh_output include/net/neighbour.h:539 [inline] > ip6_finish_output2+0x11fb/0x16a0 net/ipv6/ip6_output.c:141 > __ip6_finish_output net/ipv6/ip6_output.c:-1 [inline] > ip6_finish_output+0x234/0x7d0 net/ipv6/ip6_output.c:226 > rxe_send drivers/infiniband/sw/rxe/rxe_net.c:391 [inline] > rxe_xmit_packet+0x79e/0xa30 drivers/infiniband/sw/rxe/rxe_net.c:450 > rxe_requester+0x1fea/0x3d20 drivers/infiniband/sw/rxe/rxe_req.c:805 > rxe_sender+0x16/0x50 drivers/infiniband/sw/rxe/rxe_req.c:839 > do_task drivers/infiniband/sw/rxe/rxe_task.c:127 [inline] > do_work+0x1b4/0x6c0 drivers/infiniband/sw/rxe/rxe_task.c:187 > process_one_work kernel/workqueue.c:3238 [inline] > process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321 > worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 > kthread+0x70e/0x8a0 kernel/kthread.c:464 > ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 > ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 > > > > Tested on: > > commit: e9ef70b2 RDNA/rxe: Fix rxe_skb_tx_dtor problem > git tree: https://github.com/zhuyj/linux.git v6.16_fix_rxe_skb_tx_dtor > console output: https://syzkaller.appspot.com/x/log.txt?x=122183d4580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=79da270cec5ffd65 > dashboard link: https://syzkaller.appspot.com/bug?extid=8425ccfb599521edb153 > compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 > > Note: no patches were applied. -- Best Regards, Yanjun.Zhu