Warning: Permanently added '10.128.1.5' (ECDSA) to the list of known hosts. executing program [ 24.753638][ T83] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 25.293343][ T83] usb 1-1: New USB device found, idVendor=0cf3, idProduct=9271, bcdDevice= 1.08 [ 25.302579][ T83] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 25.311097][ T83] usb 1-1: Product: syz [ 25.315318][ T83] usb 1-1: Manufacturer: syz [ 25.319908][ T83] usb 1-1: SerialNumber: syz [ 25.364228][ T83] usb 1-1: ath9k_htc: Firmware ath9k_htc/htc_9271-1.4.0.fw requested [ 25.952852][ T83] usb 1-1: ath9k_htc: Transferred FW: ath9k_htc/htc_9271-1.4.0.fw, size: 51008 executing program [ 26.357338][ T12] usb 1-1: USB disconnect, device number 2 [ 27.242278][ T83] usb 1-1: Service connection timeout for: 256 [ 27.248695][ T83] ================================================================== [ 27.256949][ T83] BUG: KASAN: use-after-free in kfree_skb+0x32/0x3d0 [ 27.263619][ T83] Read of size 4 at addr ffff8881d20a3494 by task kworker/1:2/83 [ 27.271384][ T83] [ 27.273707][ T83] CPU: 1 PID: 83 Comm: kworker/1:2 Not tainted 5.7.0-rc6-syzkaller #0 [ 27.281838][ T83] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.291903][ T83] Workqueue: events request_firmware_work_func [ 27.298096][ T83] Call Trace: [ 27.301371][ T83] dump_stack+0xef/0x16e [ 27.305614][ T83] print_address_description.constprop.0.cold+0xd3/0x415 [ 27.312634][ T83] ? vprintk_func+0x7d/0x113 [ 27.317237][ T83] ? kfree_skb+0x32/0x3d0 [ 27.321543][ T83] __kasan_report.cold+0x37/0x7d [ 27.326548][ T83] ? kfree_skb+0x32/0x3d0 [ 27.330860][ T83] ? kfree_skb+0x32/0x3d0 [ 27.335174][ T83] kasan_report+0x33/0x50 [ 27.339483][ T83] check_memory_region+0x173/0x1d0 [ 27.344573][ T83] kfree_skb+0x32/0x3d0 [ 27.348798][ T83] htc_connect_service.cold+0xa9/0x109 [ 27.354235][ T83] ath9k_wmi_connect+0xd2/0x1a0 [ 27.359086][ T83] ? ath9k_fatal_work+0x20/0x20 [ 27.363935][ T83] ? ath9k_hif_usb_firmware_cb.cold+0xde/0xde [ 27.371926][ T83] ? ath9k_wmi_event_tasklet+0x440/0x440 [ 27.377566][ T83] ath9k_init_htc_services.constprop.0+0xb4/0x650 [ 27.383967][ T83] ? ath9k_reg_rmw_flush+0x2d0/0x2d0 [ 27.389264][ T83] ? lockdep_init_map_waits+0x26a/0x7c0 [ 27.394801][ T83] ? __raw_spin_lock_init+0x34/0x100 [ 27.400084][ T83] ? tasklet_init+0x69/0x110 [ 27.404689][ T83] ath9k_htc_probe_device+0x25a/0x1da0 [ 27.410153][ T83] ? ath9k_init_htc_services.constprop.0+0x650/0x650 [ 27.416813][ T83] ? usb_submit_urb+0x6ed/0x1460 [ 27.421734][ T83] ? usb_free_urb.part.0+0x52/0x110 [ 27.426939][ T83] ? usb_free_urb+0x1b/0x30 [ 27.434191][ T83] ath9k_htc_hw_init+0x31/0x60 [ 27.438956][ T83] ath9k_hif_usb_firmware_cb+0x274/0x510 [ 27.444582][ T83] ? ath9k_hif_usb_resume+0x320/0x320 [ 27.450201][ T83] request_firmware_work_func+0x126/0x242 [ 27.455926][ T83] ? request_firmware_into_buf+0x90/0x90 [ 27.461818][ T83] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 27.467353][ T83] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 27.472623][ T83] ? _raw_spin_unlock_irq+0x1f/0x30 [ 27.478230][ T83] process_one_work+0x965/0x1630 [ 27.483224][ T83] ? lock_release+0x720/0x720 [ 27.487882][ T83] ? pwq_dec_nr_in_flight+0x310/0x310 [ 27.493233][ T83] ? rwlock_bug.part.0+0x90/0x90 [ 27.498173][ T83] worker_thread+0x96/0xe20 [ 27.502659][ T83] ? process_one_work+0x1630/0x1630 [ 27.507868][ T83] kthread+0x326/0x430 [ 27.511927][ T83] ? kthread_create_on_node+0xf0/0xf0 [ 27.517283][ T83] ret_from_fork+0x24/0x30 [ 27.521678][ T83] [ 27.523990][ T83] Allocated by task 83: [ 27.528217][ T83] save_stack+0x1b/0x40 [ 27.532356][ T83] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 27.537996][ T83] kmem_cache_alloc_node+0xdc/0x330 [ 27.543187][ T83] __alloc_skb+0xba/0x5a0 [ 27.547500][ T83] htc_connect_service+0x2cc/0x840 [ 27.552593][ T83] ath9k_wmi_connect+0xd2/0x1a0 [ 27.557443][ T83] ath9k_init_htc_services.constprop.0+0xb4/0x650 [ 27.563863][ T83] ath9k_htc_probe_device+0x25a/0x1da0 [ 27.569303][ T83] ath9k_htc_hw_init+0x31/0x60 [ 27.574069][ T83] ath9k_hif_usb_firmware_cb+0x274/0x510 [ 27.579689][ T83] request_firmware_work_func+0x126/0x242 [ 27.585389][ T83] process_one_work+0x965/0x1630 [ 27.590305][ T83] worker_thread+0x96/0xe20 [ 27.594786][ T83] kthread+0x326/0x430 [ 27.598853][ T83] ret_from_fork+0x24/0x30 [ 27.603249][ T83] [ 27.605557][ T83] Freed by task 369: [ 27.609437][ T83] save_stack+0x1b/0x40 [ 27.616444][ T83] __kasan_slab_free+0x117/0x160 [ 27.621382][ T83] kmem_cache_free+0x9b/0x360 [ 27.627099][ T83] kfree_skbmem+0xef/0x1b0 [ 27.631512][ T83] kfree_skb+0x102/0x3d0 [ 27.635736][ T83] ath9k_htc_txcompletion_cb+0x1f8/0x2b0 [ 27.641345][ T83] hif_usb_regout_cb+0x115/0x1c0 [ 27.646267][ T83] __usb_hcd_giveback_urb+0x29a/0x550 [ 27.651849][ T83] usb_hcd_giveback_urb+0x368/0x420 [ 27.657053][ T83] dummy_timer+0x125e/0x32b4 [ 27.661659][ T83] call_timer_fn+0x1ac/0x700 [ 27.666610][ T83] run_timer_softirq+0x5f9/0x1500 [ 27.671726][ T83] __do_softirq+0x21e/0x9aa [ 27.676226][ T83] [ 27.678550][ T83] The buggy address belongs to the object at ffff8881d20a33c0 [ 27.678550][ T83] which belongs to the cache skbuff_head_cache of size 224 [ 27.693212][ T83] The buggy address is located 212 bytes inside of [ 27.693212][ T83] 224-byte region [ffff8881d20a33c0, ffff8881d20a34a0) [ 27.706470][ T83] The buggy address belongs to the page: [ 27.712100][ T83] page:ffffea00074828c0 refcount:1 mapcount:0 mapping:000000009691d544 index:0x0 [ 27.721194][ T83] flags: 0x200000000000200(slab) [ 27.726130][ T83] raw: 0200000000000200 ffffea00074429c0 0000000200000002 ffff8881da175400 [ 27.734725][ T83] raw: 0000000000000000 00000000000c000c 00000001ffffffff 0000000000000000 [ 27.743290][ T83] page dumped because: kasan: bad access detected [ 27.749679][ T83] [ 27.751986][ T83] Memory state around the buggy address: [ 27.757618][ T83] ffff8881d20a3380: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb [ 27.765659][ T83] ffff8881d20a3400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.773709][ T83] >ffff8881d20a3480: fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc [ 27.781745][ T83] ^ [ 27.786318][ T83] ffff8881d20a3500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.794363][ T83] ffff8881d20a3580: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 27.802422][ T83] ================================================================== [ 27.810476][ T83] Disabling lock debugging due to kernel taint [ 27.816785][ T83] Kernel panic - not syncing: panic_on_warn set ... [ 27.823400][ T83] CPU: 1 PID: 83 Comm: kworker/1:2 Tainted: G B 5.7.0-rc6-syzkaller #0 [ 27.835020][ T83] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.845079][ T83] Workqueue: events request_firmware_work_func [ 27.851204][ T83] Call Trace: [ 27.854472][ T83] dump_stack+0xef/0x16e [ 27.858696][ T83] panic+0x2aa/0x6e1 [ 27.862590][ T83] ? add_taint.cold+0x16/0x16 [ 27.867242][ T83] ? retint_kernel+0x10/0x10 [ 27.871814][ T83] ? kfree_skb+0x32/0x3d0 [ 27.876121][ T83] ? trace_hardirqs_on+0x55/0x200 [ 27.881135][ T83] ? kfree_skb+0x32/0x3d0 [ 27.885465][ T83] end_report+0x4d/0x53 [ 27.889625][ T83] __kasan_report.cold+0x72/0x7d [ 27.894568][ T83] ? kfree_skb+0x32/0x3d0 [ 27.898881][ T83] ? kfree_skb+0x32/0x3d0 [ 27.903189][ T83] kasan_report+0x33/0x50 [ 27.907511][ T83] check_memory_region+0x173/0x1d0 [ 27.912601][ T83] kfree_skb+0x32/0x3d0 [ 27.916998][ T83] htc_connect_service.cold+0xa9/0x109 [ 27.922455][ T83] ath9k_wmi_connect+0xd2/0x1a0 [ 27.927284][ T83] ? ath9k_fatal_work+0x20/0x20 [ 27.932119][ T83] ? ath9k_hif_usb_firmware_cb.cold+0xde/0xde [ 27.938166][ T83] ? ath9k_wmi_event_tasklet+0x440/0x440 [ 27.943800][ T83] ath9k_init_htc_services.constprop.0+0xb4/0x650 [ 27.950227][ T83] ? ath9k_reg_rmw_flush+0x2d0/0x2d0 [ 27.955492][ T83] ? lockdep_init_map_waits+0x26a/0x7c0 [ 27.961016][ T83] ? __raw_spin_lock_init+0x34/0x100 [ 27.966277][ T83] ? tasklet_init+0x69/0x110 [ 27.970876][ T83] ath9k_htc_probe_device+0x25a/0x1da0 [ 27.976344][ T83] ? ath9k_init_htc_services.constprop.0+0x650/0x650 [ 27.983007][ T83] ? usb_submit_urb+0x6ed/0x1460 [ 27.987926][ T83] ? usb_free_urb.part.0+0x52/0x110 [ 27.993110][ T83] ? usb_free_urb+0x1b/0x30 [ 27.997603][ T83] ath9k_htc_hw_init+0x31/0x60 [ 28.002357][ T83] ath9k_hif_usb_firmware_cb+0x274/0x510 [ 28.007975][ T83] ? ath9k_hif_usb_resume+0x320/0x320 [ 28.013685][ T83] request_firmware_work_func+0x126/0x242 [ 28.019384][ T83] ? request_firmware_into_buf+0x90/0x90 [ 28.024994][ T83] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 28.030519][ T83] ? rcu_read_lock_bh_held+0xb0/0xb0 [ 28.035788][ T83] ? _raw_spin_unlock_irq+0x1f/0x30 [ 28.040977][ T83] process_one_work+0x965/0x1630 [ 28.045896][ T83] ? lock_release+0x720/0x720 [ 28.050553][ T83] ? pwq_dec_nr_in_flight+0x310/0x310 [ 28.055925][ T83] ? rwlock_bug.part.0+0x90/0x90 [ 28.060835][ T83] worker_thread+0x96/0xe20 [ 28.065315][ T83] ? process_one_work+0x1630/0x1630 [ 28.070488][ T83] kthread+0x326/0x430 [ 28.074555][ T83] ? kthread_create_on_node+0xf0/0xf0 [ 28.080045][ T83] ret_from_fork+0x24/0x30 [ 28.085371][ T83] Kernel Offset: disabled [ 28.089693][ T83] Rebooting in 86400 seconds..