Hello, syzbot found the following issue on: HEAD commit: fd37b884003c io_uring/io-wq: don't clear PF_IO_WORKER on e.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=13f67407280000 kernel config: https://syzkaller.appspot.com/x/.config?x=5bcee04c3b2a8237 dashboard link: https://syzkaller.appspot.com/bug?extid=1c41b2e045dc086f58be compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1339b027280000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/7108f22d99d8/disk-fd37b884.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/83e4f595c21b/vmlinux-fd37b884.xz kernel image: https://storage.googleapis.com/syzbot-assets/16c5c6a2de66/bzImage-fd37b884.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+1c41b2e045dc086f58be@xxxxxxxxxxxxxxxxxxxxxxxxx usb 1-1: 2:1 : UAC_AS_GENERAL descriptor not found ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(lock->magic != lock) WARNING: CPU: 1 PID: 4606 at kernel/locking/mutex.c:582 __mutex_lock_common kernel/locking/mutex.c:582 [inline] WARNING: CPU: 1 PID: 4606 at kernel/locking/mutex.c:582 __mutex_lock+0x9f8/0x1350 kernel/locking/mutex.c:747 Modules linked in: CPU: 1 PID: 4606 Comm: kworker/1:3 Not tainted 6.4.0-rc6-syzkaller-00006-gfd37b884003c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 Workqueue: usb_hub_wq hub_event RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:582 [inline] RIP: 0010:__mutex_lock+0x9f8/0x1350 kernel/locking/mutex.c:747 Code: 08 84 d2 0f 85 7e 08 00 00 8b 05 5f a8 67 04 85 c0 0f 85 1b f7 ff ff 48 c7 c6 80 59 4c 8a 48 c7 c7 40 57 4c 8a e8 08 ee 38 f7 <0f> 0b e9 01 f7 ff ff 48 8b 7c 24 30 be 08 00 00 00 e8 e2 02 c4 f7 RSP: 0018:ffffc9000346efb0 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff888025839dc0 RSI: ffffffff814c03b7 RDI: 0000000000000001 RBP: ffff88807bc74ea8 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff888020037000 R15: ffff88807bc750d1 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc66ff2f38 CR3: 0000000023c93000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> imon_init_intf1 drivers/media/rc/imon.c:2321 [inline] imon_probe+0x1e5/0x3630 drivers/media/rc/imon.c:2449 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:800 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:830 __device_attach_driver+0x1d4/0x2e0 drivers/base/dd.c:958 bus_for_each_drv+0x149/0x1d0 drivers/base/bus.c:457 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:1030 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:800 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:830 __device_attach_driver+0x1d4/0x2e0 drivers/base/dd.c:958 bus_for_each_drv+0x149/0x1d0 drivers/base/bus.c:457 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:1030 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:2575 hub_port_connect drivers/usb/core/hub.c:5407 [inline] hub_port_connect_change drivers/usb/core/hub.c:5551 [inline] port_event drivers/usb/core/hub.c:5711 [inline] hub_event+0x2d9e/0x4e40 drivers/usb/core/hub.c:5793 process_one_work+0x99a/0x15e0 kernel/workqueue.c:2405 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2552 kthread+0x344/0x440 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 </TASK> --- 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@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the bug is already fixed, 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 change bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
