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Fri, 07 Jul 2023 19:08:20 -0700 (PDT) Date: Fri, 07 Jul 2023 19:08:20 -0700 In-Reply-To: <20230708015442.1300-1-hdanton@sina.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000038353d05fff0390d@google.com> Subject: Re: [syzbot] [media?] [usb?] WARNING in smsusb_start_streaming From: syzbot To: hdanton@sina.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: WARNING in smsusb_term_device smsusb:smsusb_probe: board id=7, interface number 55 smsusb:smsusb_probe: board id=7, interface number 147 smsusb:smsusb_probe: board id=7, interface number 0 smsusb:siano_media_device_register: media controller created smsusb:smsusb_start_streaming: smsusb_submit_urb(...) failed smsusb:smsusb_init_device: smsusb_start_streaming(...) failed ------------[ cut here ]------------ WARNING: CPU: 0 PID: 2029 at kernel/workqueue.c:3379 __flush_work+0x946/0xb60 kernel/workqueue.c:3379 Modules linked in: CPU: 0 PID: 2029 Comm: kworker/0:3 Not tainted 6.4.0-syzkaller-11478-gd528014517f2-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 Workqueue: usb_hub_wq hub_event RIP: 0010:__flush_work+0x946/0xb60 kernel/workqueue.c:3379 Code: 00 48 c7 c6 2b 36 54 81 48 c7 c7 00 27 9a 8c e8 c0 09 12 00 e9 6f fc ff ff e8 16 a9 30 00 0f 0b e9 63 fc ff ff e8 0a a9 30 00 <0f> 0b 45 31 ed e9 54 fc ff ff e8 6b d8 83 00 e9 3e fb ff ff e8 f1 RSP: 0018:ffffc9000797ec08 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88801b5d20e8 RCX: 0000000000000000 RDX: ffff888024503b80 RSI: ffffffff81543666 RDI: 0000000000000001 RBP: ffffc9000797eda0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000005 R12: ffff88801b5d20e8 R13: 0000000000000001 R14: 0000000000000001 R15: ffff88801b5d2100 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff765634a8 CR3: 0000000018f20000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __cancel_work_timer+0x3f9/0x570 kernel/workqueue.c:3473 __smsusb_stop_streaming drivers/media/usb/siano/smsusb.c:182 [inline] smsusb_stop_streaming drivers/media/usb/siano/smsusb.c:193 [inline] smsusb_term_device+0xee/0x300 drivers/media/usb/siano/smsusb.c:349 smsusb_init_device+0xadc/0xd20 drivers/media/usb/siano/smsusb.c:484 smsusb_probe+0x5b9/0x10b0 drivers/media/usb/siano/smsusb.c:572 usb_probe_interface+0x30f/0x960 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x240/0xca0 drivers/base/dd.c:658 __driver_probe_device+0x1df/0x4b0 drivers/base/dd.c:798 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:828 __device_attach_driver+0x1d4/0x2e0 drivers/base/dd.c:956 bus_for_each_drv+0x149/0x1d0 drivers/base/bus.c:457 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:1028 bus_probe_device+0x17c/0x1c0 drivers/base/bus.c:532 device_add+0x112d/0x1a40 drivers/base/core.c:3625 usb_set_configuration+0x1196/0x1bc0 drivers/usb/core/message.c:2211 usb_generic_driver_probe+0xcf/0x130 drivers/usb/core/generic.c:238 usb_probe_device+0xd8/0x2c0 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:579 [inline] really_probe+0x240/0xca0 drivers/base/dd.c:658 __driver_probe_device+0x1df/0x4b0 drivers/base/dd.c:798 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:828 __device_attach_driver+0x1d4/0x2e0 drivers/base/dd.c:956 bus_for_each_drv+0x149/0x1d0 drivers/base/bus.c:457 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:1028 bus_probe_device+0x17c/0x1c0 drivers/base/bus.c:532 device_add+0x112d/0x1a40 drivers/base/core.c:3625 usb_new_device+0xcb2/0x19d0 drivers/usb/core/hub.c:2590 hub_port_connect drivers/usb/core/hub.c:5422 [inline] hub_port_connect_change drivers/usb/core/hub.c:5566 [inline] port_event drivers/usb/core/hub.c:5726 [inline] hub_event+0x2d9e/0x4e40 drivers/usb/core/hub.c:5808 process_one_work+0xa34/0x16f0 kernel/workqueue.c:2597 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2748 kthread+0x344/0x440 kernel/kthread.c:389 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Tested on: commit: d5280145 Revert ".gitignore: ignore *.cover and *.mbx" git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git console output: https://syzkaller.appspot.com/x/log.txt?x=1769c3aca80000 kernel config: https://syzkaller.appspot.com/x/.config?x=d576750da57ebbb5 dashboard link: https://syzkaller.appspot.com/bug?extid=a7c205f9c1168e2f1dcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 patch: https://syzkaller.appspot.com/x/patch.diff?x=169e9ca8a80000