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AJvYcCX53b3LDNT4y8yCiO2scA1emFphQFyJSzlfvAi1MAz5DyvMas2Ed+cElhhIVB1YAmw2cNLp/OVIubU=@vger.kernel.org X-Gm-Message-State: AOJu0YwPdQEBbi9NCAlboF/jt20NrVwsfZ3vEflAYX1+H1/zdYFqkVp9 KWsdGO0JtBgpBSNCdyJxAV2xR8hnsyH7ye4DOZSJ54U3AeFhy6SgTRerwASgvB53Ad11CRdh5Td vfZgxTPwADTH6Ia8uXWSKSNfigDXEyQTtM1aHn2q9S1RPi/OR09kDiP0NYWs= X-Google-Smtp-Source: AGHT+IHOSK2Gtuv7lgkQ0yws/v+BrIPsOgECsYL9UsCOrNNwlCdp9OXsrAstAdlk9UdCvhpeeApwQmGiH06Bu4rKqncGySlV7dtj Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:450d:b0:3f3:bbda:d037 with SMTP id e9e14a558f8ab-3f3bbdad456mr7014305ab.26.1756492715728; Fri, 29 Aug 2025 11:38:35 -0700 (PDT) Date: Fri, 29 Aug 2025 11:38:35 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68b1f3ab.a70a0220.f8cc2.00ef.GAE@google.com> Subject: [syzbot] [net?] [usb?] WARNING in rtl8150_start_xmit/usb_submit_urb From: syzbot To: andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, netdev@vger.kernel.org, pabeni@redhat.com, petkan@nucleusys.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 7fa4d8dc380f Add linux-next specific files for 20250821 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=12891634580000 kernel config: https://syzkaller.appspot.com/x/.config?x=ae76068823a236b3 dashboard link: https://syzkaller.appspot.com/bug?extid=78cae3f37c62ad092caa compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14538262580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16891634580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/63178c6ef3f8/disk-7fa4d8dc.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/c5c27b0841e0/vmlinux-7fa4d8dc.xz kernel image: https://storage.googleapis.com/syzbot-assets/9a8832715cca/bzImage-7fa4d8dc.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+78cae3f37c62ad092caa@syzkaller.appspotmail.com ------------[ cut here ]------------ URB ffff888057dae700 submitted while active WARNING: drivers/usb/core/urb.c:379 at usb_submit_urb+0xfc1/0x1830 drivers/usb/core/urb.c:379, CPU#1: kworker/1:6/7756 Modules linked in: CPU: 1 UID: 0 PID: 7756 Comm: kworker/1:6 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Workqueue: mld mld_ifc_work RIP: 0010:usb_submit_urb+0xfc1/0x1830 drivers/usb/core/urb.c:379 Code: 44 89 f2 e8 51 7c f5 f9 e9 13 fc ff ff e8 87 69 89 fa c6 05 e0 ba 97 08 01 90 48 c7 c7 c0 6f 56 8c 48 89 de e8 50 09 4d fa 90 <0f> 0b 90 90 e9 b7 f0 ff ff e8 61 69 89 fa eb 11 e8 5a 69 89 fa bd RSP: 0018:ffffc9000b70f010 EFLAGS: 00010246 RAX: 0218107c34ac3b00 RBX: ffff888057dae700 RCX: ffff888021ab5a00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002 RBP: dffffc0000000000 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1c7a604 R12: dffffc0000000000 R13: ffff888032a8a002 R14: ffff888057dae708 R15: 0000000000000820 FS: 0000000000000000(0000) GS:ffff8881258c4000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6072c44a90 CR3: 000000000e338000 CR4: 00000000003526f0 Call Trace: rtl8150_start_xmit+0x2cb/0x5f0 drivers/net/usb/rtl8150.c:696 __netdev_start_xmit include/linux/netdevice.h:5222 [inline] netdev_start_xmit include/linux/netdevice.h:5231 [inline] xmit_one net/core/dev.c:3839 [inline] dev_hard_start_xmit+0x2d7/0x830 net/core/dev.c:3855 sch_direct_xmit+0x241/0x4b0 net/sched/sch_generic.c:344 __dev_xmit_skb net/core/dev.c:4114 [inline] __dev_queue_xmit+0x1857/0x3b50 net/core/dev.c:4691 neigh_output include/net/neighbour.h:547 [inline] ip6_finish_output2+0x11fb/0x16a0 net/ipv6/ip6_output.c:141 NF_HOOK+0x9e/0x380 include/linux/netfilter.h:318 mld_sendpack+0x8d4/0xe60 net/ipv6/mcast.c:1860 mld_send_cr net/ipv6/mcast.c:2159 [inline] mld_ifc_work+0x83e/0xd60 net/ipv6/mcast.c:2698 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x47c/0x820 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup