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22:17:31 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6ac332eb.598348e0.18b15.0000.GAE@google.com> Subject: [syzbot] [media?] [usb?] WARNING in smsusb_term_device (2) From: syzbot To: linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-usb@vger.kernel.org, mchehab@kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 6addb4f38557 Merge tag 'edac_urgent_for_v7.3_rc6' of git:/.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=154b0f25580000 kernel config: https://syzkaller.appspot.com/x/.config?x=341a98f91c13ec9 dashboard link: https://syzkaller.appspot.com/bug?extid=d627b1495de0e851be32 compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=134b0f25580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10cb27f5580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/70aa10806ffb/disk-6addb4f3.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/053f6eeab8df/vmlinux-6addb4f3.xz kernel image: https://storage.googleapis.com/syzbot-assets/9427f05ec282/bzImage-6addb4f3.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d627b1495de0e851be32@syzkaller.appspotmail.com smsusb:smsusb_init_device: smscore_start_device(...) failed ------------[ cut here ]------------ data & WORK_STRUCT_PWQ WARNING: kernel/workqueue.c:4425 at __flush_work+0xc8f/0xd70 kernel/workqueue.c:4425, CPU#1: kworker/1:4/5659 Modules linked in: CPU: 1 UID: 0 PID: 5659 Comm: kworker/1:4 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 Workqueue: usb_hub_wq hub_event RIP: 0010:__flush_work+0xc8f/0xd70 kernel/workqueue.c:4425 Code: 38 00 90 0f 0b 90 31 c0 49 bd f8 f8 f8 f8 f8 f8 f8 f8 e9 2d ff ff ff e8 7f 24 38 00 4d 89 f4 e9 ee fa ff ff e8 72 24 38 00 90 <0f> 0b 90 e9 23 fd ff ff e8 a4 60 ca 09 e8 5f 24 38 00 48 c7 c7 80 RSP: 0018:ffffc900051ce960 EFLAGS: 00010293 RAX: ffffffff818eb3be RBX: ffff88813fe4a005 RCX: ffff88803a410000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900051ceb18 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: fffffbfff1f64590 R12: dffffc0000000000 R13: f8f8f8f8f8f8f8f8 R14: 1ffff92000a39d34 R15: ffffc900051cea08 FS: 0000000000000000(0000) GS:ffff888125cc2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0e9993643c CR3: 0000000045a10000 CR4: 00000000003526f0 Call Trace: __cancel_work_sync+0xbf/0x110 kernel/workqueue.c:4568 smsusb_stop_streaming drivers/media/usb/siano/smsusb.c:183 [inline] smsusb_term_device+0xdd/0x3d0 drivers/media/usb/siano/smsusb.c:345 smsusb_init_device drivers/media/usb/siano/smsusb.c:497 [inline] smsusb_probe+0x1aba/0x2280 drivers/media/usb/siano/smsusb.c:575 usb_probe_interface+0x788/0xe50 drivers/usb/core/driver.c:399 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x254/0xae0 drivers/base/dd.c:706 __driver_probe_device+0x1e8/0x360 drivers/base/dd.c:868 driver_probe_device+0x4f/0x240 drivers/base/dd.c:898 __device_attach_driver+0x270/0x410 drivers/base/dd.c:1026 bus_for_each_drv+0x25b/0x2f0 drivers/base/bus.c:500 __device_attach+0x2c7/0x450 drivers/base/dd.c:1098 device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1153 bus_probe_device+0x12d/0x220 drivers/base/bus.c:620 device_add+0x7d7/0xb80 drivers/base/core.c:3776 usb_set_configuration+0x1bb5/0x2260 drivers/usb/core/message.c:2274 usb_generic_driver_probe+0x8d/0x150 drivers/usb/core/generic.c:250 usb_probe_device+0x1c3/0x3b0 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x254/0xae0 drivers/base/dd.c:706 __driver_probe_device+0x1e8/0x360 drivers/base/dd.c:868 driver_probe_device+0x4f/0x240 drivers/base/dd.c:898 __device_attach_driver+0x270/0x410 drivers/base/dd.c:1026 bus_for_each_drv+0x25b/0x2f0 drivers/base/bus.c:500 __device_attach+0x2c7/0x450 drivers/base/dd.c:1098 device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1153 bus_probe_device+0x12d/0x220 drivers/base/bus.c:620 device_add+0x7d7/0xb80 drivers/base/core.c:3776 usb_new_device+0x99a/0x1680 drivers/usb/core/hub.c:2713 hub_port_connect drivers/usb/core/hub.c:5585 [inline] hub_port_connect_change drivers/usb/core/hub.c:5725 [inline] port_event drivers/usb/core/hub.c:5889 [inline] hub_event+0x28cf/0x4cf0 drivers/usb/core/hub.c:5971 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560 kthread+0x38b/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 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