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AJvYcCXndVn+1e0iq74sMDylXXnyLtMxU3T544Ho6Gc7spPqXLE8ToT0v1cphLYUqXU5n57SqhYYpAKJlJZK@vger.kernel.org X-Gm-Message-State: AOJu0YzFbby8GZXvFy+AVWYnPrmqm8ldsyt/bXOP46a5C5RdrpaU53kO I9dPb0+YOl1zpSUD3aZPhBhsRb7VhQy5k8pLTfknAhALHNlflCKZ56knW64OVw6UGzPtJRU3yMy YC6TvOlgUdPodb73gh9cG11hdk5Pa1X38wnuBQdggNySCTIe/9iOiVTCixD4= X-Google-Smtp-Source: AGHT+IHxGXrwL2GZPqC8dWhafW/ishAVfJhDvJUIN+TmKhFXbzw1bS/15W/YG6sDtN3g8OxoavAn3JYsyw81O4zqJXNf3MXhckEM Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1c2a:b0:3dd:b523:7abe with SMTP id e9e14a558f8ab-3df4abafbe6mr18925865ab.18.1750978444108; Thu, 26 Jun 2025 15:54:04 -0700 (PDT) Date: Thu, 26 Jun 2025 15:54:04 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <685dcf8c.a00a0220.2e5631.038a.GAE@google.com> Subject: Re: [syzbot] [rdma?] WARNING in rxe_skb_tx_dtor From: syzbot To: jgg@ziepe.ca, leon@kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, syzkaller-bugs@googlegroups.com, yanjun.zhu@linux.dev, zyjzyj2000@gmail.com Content-Type: text/plain; charset="UTF-8" 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: 1093 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: 1093 Comm: kworker/u4:9 Not tainted 6.15.0-rc4-syzkaller-00150-ge382eacdcc20 #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 91 fd 89 f9 4d 8b 37 44 89 f6 83 e6 01 31 ff e8 61 41 27 f9 41 f6 c6 01 75 0e e8 76 3c 27 f9 90 <0f> 0b 90 e9 b4 01 00 00 4c 89 ff e8 85 0d fb 01 48 89 c7 be 0e 00 RSP: 0018:ffffc90000007a08 EFLAGS: 00010246 RAX: ffffffff8898ce3a RBX: ffff888043ae33c0 RCX: ffff88803513a440 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff88723ee4 R12: dffffc0000000000 R13: 1ffff1100875c683 R14: 0000000000025820 R15: ffff888035198000 FS: 0000000000000000(0000) GS:ffff88808d6b1000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f31350a7fc8 CR3: 0000000059b8c000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_release_head_state+0xfe/0x250 net/core/skbuff.c:1149 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+0xc4/0x480 net/core/dev.c:7324 napi_poll net/core/dev.c:7388 [inline] net_rx_action+0x6ea/0xdf0 net/core/dev.c:7510 handle_softirqs+0x283/0x870 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] rcu_read_unlock_bh include/linux/rcupdate.h:910 [inline] __dev_queue_xmit+0x1cd7/0x3a70 net/core/dev.c:4656 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+0x1ad/0x6b0 drivers/infiniband/sw/rxe/rxe_task.c:127 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Tested on: commit: e382eacd RDNA/rxe: Fix rxe_skb_tx_dtor problem git tree: https://github.com/zhuyj/linux.git linux-6.15-rc4-fix-rxe_skb_tx_dtor console output: https://syzkaller.appspot.com/x/log.txt?x=14a83b70580000 kernel config: https://syzkaller.appspot.com/x/.config?x=bf156ad608427e4b 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.