Warning: Permanently added '10.128.0.224' (ECDSA) to the list of known hosts. syzkaller login: [ 52.710253][ T1293] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 52.950192][ T1293] usb 1-1: Using ep0 maxpacket: 16 [ 53.230363][ T1293] usb 1-1: New USB device found, idVendor=2040, idProduct=c0a0, bcdDevice= 9.80 [ 53.239559][ T1293] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 53.247964][ T1293] usb 1-1: Product: syz [ 53.252396][ T1293] usb 1-1: Manufacturer: syz [ 53.257003][ T1293] usb 1-1: SerialNumber: syz [ 53.265641][ T1293] usb 1-1: config 0 descriptor?? [ 53.313267][ T1293] smsusb:smsusb_probe: board id=8, interface number 0 [ 53.320503][ T1293] ------------[ cut here ]------------ [ 53.325964][ T1293] WARNING: CPU: 0 PID: 1293 at kernel/workqueue.c:3083 __flush_work+0x196/0x1a0 [ 53.335055][ T1293] Modules linked in: [ 53.338964][ T1293] CPU: 0 PID: 1293 Comm: kworker/0:3 Not tainted 5.15.110-syzkaller #0 [ 53.347259][ T1293] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 [ 53.357448][ T1293] Workqueue: usb_hub_wq hub_event [ 53.362528][ T1293] RIP: 0010:__flush_work+0x196/0x1a0 [ 53.367829][ T1293] Code: 00 00 00 48 3b 8c 24 20 01 00 00 75 21 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 e3 36 2d 00 0f 0b eb ab e8 da 36 2d 00 <0f> 0b eb a2 e8 d1 80 c7 08 90 53 48 89 fb e8 c7 36 2d 00 48 89 df [ 53.387498][ T1293] RSP: 0018:ffffc90005f7e880 EFLAGS: 00010293 [ 53.393639][ T1293] RAX: ffffffff8152a7a6 RBX: ffff88807af6c100 RCX: ffff88801e281d00 [ 53.401807][ T1293] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90005f7e948 [ 53.409857][ T1293] RBP: ffffc90005f7e9f0 R08: dffffc0000000000 R09: ffffc90005f7e8a0 [ 53.417907][ T1293] R10: 0000000000000001 R11: dffffc0000000001 R12: ffff88807af6c0e8 [ 53.426034][ T1293] R13: dffffc0000000000 R14: 1ffff92000befd10 R15: 0000000000000001 [ 53.434075][ T1293] FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 53.443159][ T1293] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.449744][ T1293] CR2: 000055efb36a9f18 CR3: 00000000231e8000 CR4: 00000000003506f0 [ 53.457758][ T1293] DR0: 0000000000000000 DR1: 0000000000000000 DR2: