Warning: Permanently added '10.128.0.186' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 46.932002][ T22] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 47.172006][ T22] usb 1-1: Using ep0 maxpacket: 8 [ 47.292058][ T22] usb 1-1: config index 0 descriptor too short (expected 1037, got 801) [ 47.300513][ T22] usb 1-1: config 252 contains an unexpected descriptor of type 0x2, skipping [ 47.309544][ T22] usb 1-1: config 252 has an invalid descriptor of length 37, skipping remainder of the config [ 47.319948][ T22] usb 1-1: config 252 has 1 interface, different from the descriptor's value: 2 [ 47.329036][ T22] usb 1-1: config 252 interface 0 altsetting 129 endpoint 0x84 has invalid maxpacket 395, setting to 64 [ 47.340221][ T22] usb 1-1: config 252 interface 0 altsetting 129 has an invalid endpoint with address 0x25, skipping [ 47.351115][ T22] usb 1-1: config 252 interface 0 altsetting 129 endpoint 0x1 has invalid maxpacket 520, setting to 64 [ 47.362161][ T22] usb 1-1: config 252 interface 0 altsetting 129 endpoint 0x8 has invalid maxpacket 563, setting to 64 [ 47.373200][ T22] usb 1-1: config 252 interface 0 has no altsetting 0 [ 47.379968][ T22] usb 1-1: New USB device found, idVendor=2040, idProduct=c602, bcdDevice=3e.8e [ 47.389010][ T22] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 executing program [ 47.672184][ T22] usb 1-1: string descriptor 0 read error: -71 [ 47.680275][ T22] usb 1-1: dvb_usb_v2: found a 'HCW 126xxx' in warm state [ 47.689846][ T22] usb 1-1: dvb_usb_v2: will pass the complete MPEG2 transport stream to the software demuxer [ 47.700475][ T22] dvbdev: DVB: registering new adapter (HCW 126xxx) [ 47.707291][ T22] usb 1-1: media controller created [ 47.716191][ T22] dvbdev: dvb_create_media_entity: media entity 'dvb-demux' registered. [ 47.731425][ T22] usb 1-1: selecting invalid altsetting 1 [ 47.737273][ T22] set interface failed [ 47.737279][ T22] ------------[ cut here ]------------ [ 47.746859][ T22] DEBUG_LOCKS_WARN_ON(lock->magic != lock) [ 47.746903][ T22] WARNING: CPU: 1 PID: 22 at kernel/locking/mutex.c:941 __mutex_lock+0xd2c/0x1360 [ 47.761859][ T22] Kernel panic - not syncing: panic_on_warn set ... [ 47.768432][ T22] CPU: 1 PID: 22 Comm: kworker/1:1 Not tainted 5.4.0-syzkaller #0 [ 47.776251][ T22] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.786300][ T22] Workqueue: usb_hub_wq hub_event [ 47.791312][ T22] Call Trace: [ 47.794605][ T22] dump_stack+0xef/0x16e [ 47.798824][ T22] ? __mutex_lock+0xc70/0x1360 [ 47.803568][ T22] panic+0x2aa/0x6e1 [ 47.807443][ T22] ? add_taint.cold+0x16/0x16 [ 47.812098][ T22] ? __probe_kernel_read+0x188/0x1d0 [ 47.817356][ T22] ? __warn.cold+0x14/0x30 [ 47.821746][ T22] ? __warn+0xd5/0x1c8 [ 47.825792][ T22] ? __mutex_lock+0xd2c/0x1360 [ 47.830546][ T22] __warn.cold+0x2f/0x30 [ 47.834764][ T22] ? __mutex_lock+0xd2c/0x1360 [ 47.839518][ T22] report_bug+0x27b/0x2f0 [ 47.843838][ T22] do_error_trap+0x12b/0x1e0 [ 47.848415][ T22] ? __mutex_lock+0xd2c/0x1360 [ 47.853156][ T22] do_invalid_op+0x32/0x40 [ 47.857547][ T22] ? __mutex_lock+0xd2c/0x1360 [ 47.862285][ T22] invalid_op+0x23/0x30 [ 47.866431][ T22] RIP: 0010:__mutex_lock+0xd2c/0x1360 [ 47.871777][ T22] Code: d2 0f 85 f1 05 00 00 44 8b 05 d0 1d 10 02 45 85 c0 0f 85 0f f4 ff ff 48 c7 c6 00 7d c6 85 48 c7 c7 00 7b c6 85 e8 cc 7c 9c fb <0f> 0b e9 f5 f3 ff ff 65 48 8b 1c 25 00 0f 02 00 be 08 00 00 00 48 [ 47.891356][ T22] RSP: 0018:ffff8881d902eee0 EFLAGS: 00010286 [ 47.897412][ T22] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 47.905447][ T22] RDX: 0000000000000000 RSI: ffffffff8128ebcd RDI: ffffed103b205dce [ 47.913402][ T22] RBP: ffff8881d902f050 R08: ffff8881da64e200 R09: fffffbfff0d9e911 [ 47.921374][ T22] R10: fffffbfff0d9e910 R11: ffffffff86cf4883 R12: 0000000000000000 [ 47.929496][ T22] R13: dffffc0000000000 R14: ffff8881cfd669c8 R15: ffff8881cfd669c8 [ 47.937557][ T22] ? vprintk_func+0x7d/0x113 [ 47.942178][ T22] ? mxl111sf_ctrl_msg+0xb8/0x210 [ 47.947205][ T22] ? find_held_lock+0x2d/0x110 [ 47.951956][ T22] ? vprintk_emit+0xe2/0x3d0 [ 47.956523][ T22] ? mutex_trylock+0x2e0/0x2e0 [ 47.961274][ T22] ? mark_lock+0xbc/0x1160 [ 47.965677][ T22] ? mark_held_locks+0x9f/0xe0 [ 47.971384][ T22] ? vprintk_emit+0x112/0x3d0 [ 47.976045][ T22] ? lockdep_hardirqs_on+0x382/0x580 [ 47.981318][ T22] ? mxl111sf_ctrl_msg+0xb8/0x210 [ 47.986326][ T22] mxl111sf_ctrl_msg+0xb8/0x210 [ 47.991160][ T22] mxl111sf_write_reg+0x8b/0x120 [ 47.996104][ T22] ? mxl111sf_frontend_attach_mercury_mh+0x940/0x940 [ 48.002756][ T22] ? usb_set_interface+0x79c/0xa50 [ 48.007856][ T22] mxl1x1sf_soft_reset+0x6b/0x190 [ 48.012859][ T22] mxl111sf_lg2160_frontend_attach+0x283/0x900 [ 48.019076][ T22] ? mxl111sf_frontend_attach_atsc_mh+0x70/0x70 [ 48.025297][ T22] dvb_usbv2_probe.cold+0x1e78/0x25d7 [ 48.030650][ T22] ? dvb_usb_start_feed+0xb60/0xb60 [ 48.035825][ T22] ? rpm_callback+0x230/0x230 [ 48.040495][ T22] ? lockdep_hardirqs_on+0x382/0x580 [ 48.045756][ T22] ? __pm_runtime_resume+0x111/0x180 [ 48.051016][ T22] usb_probe_interface+0x305/0x7a0 [ 48.056118][ T22] ? usb_probe_device+0x100/0x100 [ 48.061128][ T22] really_probe+0x281/0x6d0 [ 48.065673][ T22] driver_probe_device+0x104/0x210 [ 48.070808][ T22] __device_attach_driver+0x1c2/0x220 [ 48.076158][ T22] ? driver_allows_async_probing+0x160/0x160 [ 48.082115][ T22] bus_for_each_drv+0x162/0x1e0 [ 48.086983][ T22] ? bus_rescan_devices+0x20/0x20 [ 48.091985][ T22] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 48.097814][ T22] ? lockdep_hardirqs_on+0x382/0x580 [ 48.103074][ T22] __device_attach+0x217/0x360 [ 48.107813][ T22] ? device_bind_driver+0xd0/0xd0 [ 48.112813][ T22] bus_probe_device+0x1e4/0x290 [ 48.117654][ T22] device_add+0x1480/0x1c20 [ 48.122156][ T22] ? wait_for_completion+0x3c0/0x3c0 [ 48.127419][ T22] ? device_links_flush_sync_list+0x350/0x350 [ 48.133464][ T22] usb_set_configuration+0xe67/0x1740 [ 48.138811][ T22] generic_probe+0x9d/0xd5 [ 48.143275][ T22] usb_probe_device+0x99/0x100 [ 48.148022][ T22] ? usb_suspend+0x620/0x620 [ 48.152602][ T22] really_probe+0x281/0x6d0 [ 48.157091][ T22] driver_probe_device+0x104/0x210 [ 48.162184][ T22] __device_attach_driver+0x1c2/0x220 [ 48.167535][ T22] ? driver_allows_async_probing+0x160/0x160 [ 48.173493][ T22] bus_for_each_drv+0x162/0x1e0 [ 48.178337][ T22] ? bus_rescan_devices+0x20/0x20 [ 48.183340][ T22] ? _raw_spin_unlock_irqrestore+0x39/0x40 [ 48.189209][ T22] ? lockdep_hardirqs_on+0x382/0x580 [ 48.194478][ T22] __device_attach+0x217/0x360 [ 48.199241][ T22] ? device_bind_driver+0xd0/0xd0 [ 48.204288][ T22] bus_probe_device+0x1e4/0x290 [ 48.209123][ T22] device_add+0x1480/0x1c20 [ 48.213607][ T22] ? device_links_flush_sync_list+0x350/0x350 [ 48.219737][ T22] usb_new_device.cold+0x6a4/0xe79 [ 48.224838][ T22] hub_event+0x1e59/0x3860 [ 48.229233][ T22] ? hub_port_debounce+0x260/0x260 [ 48.234321][ T22] ? find_held_lock+0x2d/0x110 [ 48.239058][ T22] ? mark_held_locks+0xe0/0xe0 [ 48.243796][ T22] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 48.249327][ T22] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 48.254592][ T22] process_one_work+0x92b/0x1530 [ 48.259505][ T22] ? pwq_dec_nr_in_flight+0x310/0x310 [ 48.264877][ T22] ? do_raw_spin_lock+0x11a/0x280 [ 48.269983][ T22] worker_thread+0x96/0xe20 [ 48.274464][ T22] ? process_one_work+0x1530/0x1530 [ 48.279636][ T22] kthread+0x318/0x420 [ 48.283687][ T22] ? kthread_create_on_node+0xf0/0xf0 [ 48.289047][ T22] ret_from_fork+0x24/0x30 [ 48.294292][ T22] Kernel Offset: disabled [ 48.298631][ T22] Rebooting in 86400 seconds..