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AJvYcCUyY20ZKAHjaCh6QtzxhBeuGfcHdV9WwmtOFqEmlFbBoLoFnMIfbgSEZgFIj8WDY9alUx5eCB8XOf+nJyA=@vger.kernel.org X-Gm-Message-State: AOJu0Yw3rpQmb4V1p8cxwp2asVZzO4YQ1cSaeG4+MjYZdpGJlpmHxOrF mHVPCMqF2ysSZLqu4weeHjM/Eib6P6Fn5wk0jEImKjF+fw2D0olZ1eNIvmLUeiPvWzGXle3b+hT ojMo1m51P5iMutqRU3zliEeC67BRKcf9HVb+xMYcdzqBNZLX/vePJSSC/K50= X-Google-Smtp-Source: AGHT+IEmQkcGNq/DLEfrzrrN4F9drEZmb8/SaODZKdh3M7VJxlBx7AndmhsgrC8lcUqL9MClqW3Sqt5xN5v+gXjLAcHofXobJwlW Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:210e:b0:873:35c8:16f9 with SMTP id ca18e2360f4ac-8795b0f1021mr42561139f.8.1752015422642; Tue, 08 Jul 2025 15:57:02 -0700 (PDT) Date: Tue, 08 Jul 2025 15:57:02 -0700 In-Reply-To: <20250708223525.3029-1-hdanton@sina.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <686da23e.050a0220.1ffab7.0024.GAE@google.com> Subject: Re: [syzbot] [usb?] WARNING in usbnet_status_start From: syzbot To: hdanton@sina.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.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 usbnet_status_start sierra_net 4-1:0.11 wwan0: register 'sierra_net' at usb-dummy_hcd.3-1, Sierra Wireless USB-to-WWAN Modem, 00:00:00:00:01:0b ------------[ cut here ]------------ WARNING: CPU: 1 PID: 37 at drivers/net/usb/usbnet.c:268 usbnet_status_start+0x189/0x1e0 drivers/net/usb/usbnet.c:268 Modules linked in: CPU: 1 UID: 0 PID: 37 Comm: kworker/1:1 Not tainted 6.16.0-rc4-syzkaller-00311-gd1b07cc0868f-dirty #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: usb_hub_wq hub_event RIP: 0010:usbnet_status_start+0x189/0x1e0 drivers/net/usb/usbnet.c:268 Code: 00 fc ff df 48 c1 ea 03 80 3c 02 00 75 4e 48 8b bb 70 03 00 00 89 ee e8 25 95 0c 00 41 89 c5 e9 36 ff ff ff e8 a8 3f ec fc 90 <0f> 0b 90 45 31 ed e9 39 ff ff ff 4c 89 ff e8 d4 41 49 fd e9 e9 fe RSP: 0018:ffffc90000277098 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff888107f64d00 RCX: ffffffff84930727 RDX: ffff888105693a00 RSI: ffffffff84919188 RDI: ffff888107f64d00 RBP: 0000000000000cc0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888107f65070 R13: ffffffff89be8f70 R14: ffff888116be6028 R15: ffff888116be6024 FS: 0000000000000000(0000) GS:ffff888269262000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6e767f1d60 CR3: 000000011f9fc000 CR4: 00000000003506f0 Call Trace: sierra_net_probe drivers/net/usb/sierra_net.c:929 [inline] sierra_net_probe+0x70/0xb0 drivers/net/usb/sierra_net.c:921 usb_probe_interface+0x303/0x9c0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:657 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:799 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:957 bus_for_each_drv+0x156/0x1e0 drivers/base/bus.c:462 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:1029 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:537 device_add+0x1148/0x1a70 drivers/base/core.c:3692 usb_set_configuration+0x1187/0x1e20 drivers/usb/core/message.c:2210 usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:250 usb_probe_device+0xef/0x3e0 drivers/usb/core/driver.c:291 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x23e/0xa90 drivers/base/dd.c:657 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:799 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:829 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:957 bus_for_each_drv+0x156/0x1e0 drivers/base/bus.c:462 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:1029 bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:537 device_add+0x1148/0x1a70 drivers/base/core.c:3692 usb_new_device+0xd07/0x1a20 drivers/usb/core/hub.c:2694 hub_port_connect drivers/usb/core/hub.c:5566 [inline] hub_port_connect_change drivers/usb/core/hub.c:5706 [inline] port_event drivers/usb/core/hub.c:5866 [inline] hub_event+0x2f85/0x5030 drivers/usb/core/hub.c:5948 process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3321 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3402 kthread+0x3c2/0x780 kernel/kthread.c:464 ret_from_fork+0x5b3/0x6c0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Tested on: commit: d1b07cc0 arm64: dts: s32g: Add USB device tree informa.. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing console output: https://syzkaller.appspot.com/x/log.txt?x=10ea6bd4580000 kernel config: https://syzkaller.appspot.com/x/.config?x=28729dff5d03ad1 dashboard link: https://syzkaller.appspot.com/bug?extid=3f89ec3d1d0842e95d50 compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=17cc8a8c580000