Warning: Permanently added '10.128.15.198' (ECDSA) to the list of known hosts. executing program [ 24.465706][ T68] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 24.985090][ T68] usb 1-1: New USB device found, idVendor=0cf3, idProduct=9271, bcdDevice= 1.08 [ 24.994175][ T68] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 25.002199][ T68] usb 1-1: Product: syz [ 25.006521][ T68] usb 1-1: Manufacturer: syz [ 25.011154][ T68] usb 1-1: SerialNumber: syz [ 25.055861][ T68] usb 1-1: ath9k_htc: Firmware ath9k_htc/htc_9271-1.4.0.fw requested [ 25.674685][ T68] usb 1-1: ath9k_htc: Transferred FW: ath9k_htc/htc_9271-1.4.0.fw, size: 51008 [ 26.734093][ T68] ath9k_htc 1-1:1.0: ath9k_htc: Target is unresponsive [ 26.741117][ T68] ath9k_htc: Failed to initialize the device [ 26.774155][ C1] ================================================================== [ 26.782682][ C1] BUG: KASAN: use-after-free in ath9k_hif_usb_rx_cb+0xd7d/0xf80 [ 26.790719][ C1] Read of size 4 at addr ffff8881cd714090 by task swapper/1/0 [ 26.798142][ C1] [ 26.800450][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.8.0-rc3-syzkaller #0 [ 26.808316][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.818343][ C1] Call Trace: [ 26.822036][ C1] [ 26.824879][ C1] dump_stack+0xf6/0x16e [ 26.829110][ C1] ? ath9k_hif_usb_rx_cb+0xd7d/0xf80 [ 26.834368][ C1] ? ath9k_hif_usb_rx_cb+0xd7d/0xf80 [ 26.839629][ C1] print_address_description.constprop.0+0x1a/0x210 [ 26.846191][ C1] ? vprintk_func+0x93/0x133 [ 26.850765][ C1] ? ath9k_hif_usb_rx_cb+0xd7d/0xf80 [ 26.856025][ C1] kasan_report.cold+0x37/0x7c [ 26.861826][ C1] ? ath9k_hif_usb_rx_cb+0xd7d/0xf80 [ 26.867094][ C1] ath9k_hif_usb_rx_cb+0xd7d/0xf80 [ 26.872289][ C1] ? __usb_hcd_giveback_urb+0x302/0x560 [ 26.877863][ C1] ? hif_usb_start+0xa0/0xa0 [ 26.882434][ C1] ? lock_downgrade+0x730/0x730 [ 26.887520][ C1] ? trace_hardirqs_off+0x27/0x1f0 [ 26.892605][ C1] __usb_hcd_giveback_urb+0x32d/0x560 [ 26.898012][ C1] usb_hcd_giveback_urb+0x367/0x410 [ 26.903187][ C1] dummy_timer+0x11f2/0x3240 [ 26.907751][ C1] ? lock_downgrade+0x730/0x730 [ 26.912575][ C1] ? dummy_dequeue+0x490/0x490 [ 26.917309][ C1] call_timer_fn+0x1ac/0x6e0 [ 26.921872][ C1] ? dummy_dequeue+0x490/0x490 [ 26.926610][ C1] ? msleep_interruptible+0x130/0x130 [ 26.931952][ C1] ? lock_downgrade+0x730/0x730 [ 26.936776][ C1] ? _raw_spin_unlock_irq+0x1f/0x30 [ 26.941947][ C1] ? lockdep_hardirqs_on_prepare+0x1bc/0x550 [ 26.947899][ C1] ? trace_hardirqs_on+0x5f/0x200 [ 26.952893][ C1] ? dummy_dequeue+0x490/0x490 [ 26.957644][ C1] __run_timers.part.0+0x54c/0x9e0 [ 26.962736][ C1] ? call_timer_fn+0x6e0/0x6e0 [ 26.967492][ C1] ? clockevents_program_event+0x12b/0x350 [ 26.973274][ C1] ? tick_program_event+0xa8/0x130 [ 26.978376][ C1] run_timer_softirq+0x80/0x120 [ 26.983203][ C1] __do_softirq+0x222/0x95b [ 26.987684][ C1] asm_call_on_stack+0xf/0x20 [ 26.996758][ C1] [ 26.999673][ C1] do_softirq_own_stack+0xed/0x140 [ 27.005076][ C1] irq_exit_rcu+0x150/0x1f0 [ 27.009764][ C1] sysvec_apic_timer_interrupt+0x49/0xc0 [ 27.015380][ C1] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 27.021348][ C1] RIP: 0010:acpi_safe_halt+0x72/0x90 [ 27.026699][ C1] Code: 74 06 5b e9 60 c8 8f fb e8 5b c8 8f fb e8 a6 53 95 fb e9 0c 00 00 00 e8 4c c8 8f fb 0f 00 2d c5 e5 74 00 e8 40 c8 8f fb fb f4 e8 98 4d 95 fb 5b e9 32 c8 8f fb 48 89 df e8 fa 72 b9 fb eb ab [ 27.046298][ C1] RSP: 0018:ffff8881da22fc80 EFLAGS: 00000293 [ 27.052337][ C1] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 27.060283][ C1] RDX: ffff8881da213200 RSI: ffffffff85afd9a0 RDI: ffffffff85afd98a [ 27.068231][ C1] RBP: ffff8881d8cca864 R08: 0000000000000000 R09: 0000000000000000 [ 27.076187][ C1] R10: 0000000000000001 R11: 0000000000000000 R12: ffff8881d8cca864 [ 27.084141][ C1] R13: 1ffff1103b445f99 R14: ffff8881d8cca865 R15: 0000000000000001 [ 27.092191][ C1] ? acpi_safe_halt+0x70/0x90 [ 27.096858][ C1] ? acpi_safe_halt+0x5a/0x90 [ 27.101523][ C1] acpi_idle_do_entry+0x15c/0x1b0 [ 27.106530][ C1] acpi_idle_enter+0x3f0/0xa50 [ 27.111272][ C1] ? acpi_idle_enter_s2idle+0x190/0x190 [ 27.116795][ C1] ? kvm_sched_clock_read+0x14/0x30 [ 27.121969][ C1] ? sched_clock+0x5/0x10 [ 27.126274][ C1] ? sched_clock_cpu+0x18/0x170 [ 27.131101][ C1] cpuidle_enter_state+0xff/0x870 [ 27.136111][ C1] ? rcu_read_lock_sched_held+0x3a/0x70 [ 27.141649][ C1] cpuidle_enter+0x4a/0xa0 [ 27.146106][ C1] do_idle+0x3d6/0x5a0 [ 27.150153][ C1] ? arch_cpu_idle_exit+0x40/0x40 [ 27.155152][ C1] cpu_startup_entry+0x14/0x20 [ 27.159891][ C1] start_secondary+0x2d2/0x3c0 [ 27.164633][ C1] ? set_cpu_sibling_map+0x1ff0/0x1ff0 [ 27.170067][ C1] secondary_startup_64+0xb6/0xc0 [ 27.175060][ C1] [ 27.177368][ C1] Allocated by task 120: [ 27.181587][ C1] save_stack+0x1b/0x40 [ 27.185718][ C1] __kasan_kmalloc.constprop.0+0xc2/0xd0 [ 27.191324][ C1] kmem_cache_alloc+0xd2/0x310 [ 27.196061][ C1] getname_flags.part.0+0x50/0x4f0 [ 27.201144][ C1] user_path_at_empty+0xa1/0x100 [ 27.206054][ C1] vfs_statx+0x14e/0x390 [ 27.210268][ C1] __do_sys_newlstat+0x91/0x110 [ 27.215092][ C1] do_syscall_64+0x50/0x90 [ 27.219538][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 27.225398][ C1] [ 27.227700][ C1] Freed by task 120: [ 27.231566][ C1] save_stack+0x1b/0x40 [ 27.235716][ C1] __kasan_slab_free+0x116/0x160 [ 27.240628][ C1] slab_free_freelist_hook+0x53/0x140 [ 27.245972][ C1] kmem_cache_free+0x84/0x2e0 [ 27.250619][ C1] putname+0xe1/0x120 [ 27.254577][ C1] filename_lookup+0x3b1/0x560 [ 27.259330][ C1] vfs_statx+0x14e/0x390 [ 27.263543][ C1] __do_sys_newlstat+0x91/0x110 [ 27.268368][ C1] do_syscall_64+0x50/0x90 [ 27.272776][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 27.278638][ C1] [ 27.280944][ C1] The buggy address belongs to the object at ffff8881cd713300 [ 27.280944][ C1] which belongs to the cache names_cache of size 4096 [ 27.295074][ C1] The buggy address is located 3472 bytes inside of [ 27.295074][ C1] 4096-byte region [ffff8881cd713300, ffff8881cd714300) [ 27.308505][ C1] The buggy address belongs to the page: [ 27.314204][ C1] page:ffffea000735c400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 head:ffffea000735c400 order:3 compound_mapcount:0 compound_pincount:0 [ 27.329445][ C1] flags: 0x200000000010200(slab|head) [ 27.334791][ C1] raw: 0200000000010200 dead000000000100 dead000000000122 ffff8881da120000 [ 27.343365][ C1] raw: 0000000000000000 0000000000070007 00000001ffffffff 0000000000000000 [ 27.351921][ C1] page dumped because: kasan: bad access detected [ 27.358303][ C1] [ 27.360604][ C1] Memory state around the buggy address: [ 27.366227][ C1] ffff8881cd713f80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.374264][ C1] ffff8881cd714000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.382298][ C1] >ffff8881cd714080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.390331][ C1] ^ [ 27.394894][ C1] ffff8881cd714100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.402932][ C1] ffff8881cd714180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.410963][ C1] ================================================================== [ 27.418995][ C1] Disabling lock debugging due to kernel taint [ 27.425118][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 27.431678][ C1] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G B 5.8.0-rc3-syzkaller #0 [ 27.440929][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.450975][ C1] Call Trace: [ 27.454232][ C1] [ 27.457061][ C1] dump_stack+0xf6/0x16e [ 27.461275][ C1] ? ath9k_hif_usb_rx_cb+0xd30/0xf80 [ 27.466529][ C1] panic+0x2aa/0x6e1 [ 27.470394][ C1] ? __warn_printk+0xf3/0xf3 [ 27.474956][ C1] ? _raw_spin_unlock_irqrestore+0x2a/0x40 [ 27.480740][ C1] ? trace_hardirqs_off+0x27/0x1f0 [ 27.485836][ C1] ? ath9k_hif_usb_rx_cb+0xd7d/0xf80 [ 27.491101][ C1] ? ath9k_hif_usb_rx_cb+0xd7d/0xf80 [ 27.496366][ C1] end_report+0x4d/0x53 [ 27.500507][ C1] kasan_report.cold+0x72/0x7c [ 27.505251][ C1] ? ath9k_hif_usb_rx_cb+0xd7d/0xf80 [ 27.510508][ C1] ath9k_hif_usb_rx_cb+0xd7d/0xf80 [ 27.515615][ C1] ? __usb_hcd_giveback_urb+0x302/0x560 [ 27.521133][ C1] ? hif_usb_start+0xa0/0xa0 [ 27.525694][ C1] ? lock_downgrade+0x730/0x730 [ 27.530516][ C1] ? trace_hardirqs_off+0x27/0x1f0 [ 27.535601][ C1] __usb_hcd_giveback_urb+0x32d/0x560 [ 27.540944][ C1] usb_hcd_giveback_urb+0x367/0x410 [ 27.546119][ C1] dummy_timer+0x11f2/0x3240 [ 27.550680][ C1] ? lock_downgrade+0x730/0x730 [ 27.555520][ C1] ? dummy_dequeue+0x490/0x490 [ 27.560256][ C1] call_timer_fn+0x1ac/0x6e0 [ 27.564816][ C1] ? dummy_dequeue+0x490/0x490 [ 27.569548][ C1] ? msleep_interruptible+0x130/0x130 [ 27.574889][ C1] ? lock_downgrade+0x730/0x730 [ 27.579731][ C1] ? _raw_spin_unlock_irq+0x1f/0x30 [ 27.584903][ C1] ? lockdep_hardirqs_on_prepare+0x1bc/0x550 [ 27.590875][ C1] ? trace_hardirqs_on+0x5f/0x200 [ 27.595871][ C1] ? dummy_dequeue+0x490/0x490 [ 27.600603][ C1] __run_timers.part.0+0x54c/0x9e0 [ 27.605706][ C1] ? call_timer_fn+0x6e0/0x6e0 [ 27.610442][ C1] ? clockevents_program_event+0x12b/0x350 [ 27.616234][ C1] ? tick_program_event+0xa8/0x130 [ 27.621315][ C1] run_timer_softirq+0x80/0x120 [ 27.626140][ C1] __do_softirq+0x222/0x95b [ 27.630615][ C1] asm_call_on_stack+0xf/0x20 [ 27.635259][ C1] [ 27.638172][ C1] do_softirq_own_stack+0xed/0x140 [ 27.643255][ C1] irq_exit_rcu+0x150/0x1f0 [ 27.647729][ C1] sysvec_apic_timer_interrupt+0x49/0xc0 [ 27.653335][ C1] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 27.659290][ C1] RIP: 0010:acpi_safe_halt+0x72/0x90 [ 27.664551][ C1] Code: 74 06 5b e9 60 c8 8f fb e8 5b c8 8f fb e8 a6 53 95 fb e9 0c 00 00 00 e8 4c c8 8f fb 0f 00 2d c5 e5 74 00 e8 40 c8 8f fb fb f4 e8 98 4d 95 fb 5b e9 32 c8 8f fb 48 89 df e8 fa 72 b9 fb eb ab [ 27.684141][ C1] RSP: 0018:ffff8881da22fc80 EFLAGS: 00000293 [ 27.690176][ C1] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 27.698121][ C1] RDX: ffff8881da213200 RSI: ffffffff85afd9a0 RDI: ffffffff85afd98a [ 27.706065][ C1] RBP: ffff8881d8cca864 R08: 0000000000000000 R09: 0000000000000000 [ 27.714025][ C1] R10: 0000000000000001 R11: 0000000000000000 R12: ffff8881d8cca864 [ 27.721967][ C1] R13: 1ffff1103b445f99 R14: ffff8881d8cca865 R15: 0000000000000001 [ 27.739380][ C1] ? acpi_safe_halt+0x70/0x90 [ 27.744055][ C1] ? acpi_safe_halt+0x5a/0x90 [ 27.748709][ C1] acpi_idle_do_entry+0x15c/0x1b0 [ 27.753709][ C1] acpi_idle_enter+0x3f0/0xa50 [ 27.758447][ C1] ? acpi_idle_enter_s2idle+0x190/0x190 [ 27.763965][ C1] ? kvm_sched_clock_read+0x14/0x30 [ 27.769136][ C1] ? sched_clock+0x5/0x10 [ 27.773465][ C1] ? sched_clock_cpu+0x18/0x170 [ 27.778320][ C1] cpuidle_enter_state+0xff/0x870 [ 27.783405][ C1] ? rcu_read_lock_sched_held+0x3a/0x70 [ 27.788936][ C1] cpuidle_enter+0x4a/0xa0 [ 27.793337][ C1] do_idle+0x3d6/0x5a0 [ 27.797392][ C1] ? arch_cpu_idle_exit+0x40/0x40 [ 27.802394][ C1] cpu_startup_entry+0x14/0x20 [ 27.807185][ C1] start_secondary+0x2d2/0x3c0 [ 27.811922][ C1] ? set_cpu_sibling_map+0x1ff0/0x1ff0 [ 27.817406][ C1] secondary_startup_64+0xb6/0xc0 [ 27.822864][ C1] Kernel Offset: disabled [ 27.827172][ C1] Rebooting in 86400 seconds..