[[0;32m OK [0m] Reached target Multi-User System.
[[0;32m OK [0m] Reached target Graphical Interface.
Starting Update UTMP about System Runlevel Changes...
[[0;32m OK [0m] Started Update UTMP about System Runlevel Changes.
Debian GNU/Linux 9 syzkaller ttyS0
syzkaller login: [ 15.698742][ C1] random: crng init done
[ 15.703100][ C1] random: 7 urandom warning(s) missed due to ratelimiting
Warning: Permanently added '10.128.0.184' (ECDSA) to the list of known hosts.
executing program
[ 22.293698][ T83] usb 1-1: new high-speed USB device number 2 using dummy_hcd
[ 22.813493][ T83] usb 1-1: New USB device found, idVendor=0cf3, idProduct=9271, bcdDevice= 1.08
[ 22.822600][ T83] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 22.830668][ T83] usb 1-1: Product: syz
[ 22.834893][ T83] usb 1-1: Manufacturer: syz
[ 22.839465][ T83] usb 1-1: SerialNumber: syz
[ 22.884282][ T83] usb 1-1: ath9k_htc: Firmware ath9k_htc/htc_9271-1.4.0.fw requested
[ 23.453131][ T83] usb 1-1: ath9k_htc: Transferred FW: ath9k_htc/htc_9271-1.4.0.fw, size: 51008
[ 24.512533][ T83] ath9k_htc 1-1:1.0: ath9k_htc: Target is unresponsive
[ 24.519566][ T83] ath9k_htc: Failed to initialize the device
[ 24.552614][ C1] ==================================================================
[ 24.560759][ C1] BUG: KASAN: use-after-free in ath9k_hif_usb_rx_cb+0xe64/0xf90
[ 24.568385][ C1] Read of size 4 at addr ffff8881ccb740d0 by task swapper/1/0
[ 24.575808][ C1]
[ 24.578115][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc6-syzkaller #0
[ 24.586003][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 24.596033][ C1] Call Trace:
[ 24.599293][ C1]
[ 24.602132][ C1] dump_stack+0xef/0x16e
[ 24.606352][ C1] print_address_description.constprop.0.cold+0xd3/0x415
[ 24.613347][ C1] ? __build_skb+0x21/0x60
[ 24.617748][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0
[ 24.623263][ C1] ? vprintk_func+0x7d/0x113
[ 24.627828][ C1] ? ath9k_hif_usb_rx_cb+0xe64/0xf90
[ 24.633085][ C1] __kasan_report.cold+0x37/0x7d
[ 24.638008][ C1] ? ath9k_hif_usb_rx_cb+0xe64/0xf90
[ 24.643352][ C1] ? ath9k_hif_usb_rx_cb+0xe64/0xf90
[ 24.649390][ C1] kasan_report+0x33/0x50
[ 24.653740][ C1] ath9k_hif_usb_rx_cb+0xe64/0xf90
[ 24.659016][ C1] ? hif_usb_mgmt_cb+0x310/0x310
[ 24.663949][ C1] ? do_raw_spin_lock+0x129/0x290
[ 24.668975][ C1] ? lock_downgrade+0x720/0x720
[ 24.673819][ C1] ? trace_hardirqs_off+0x50/0x200
[ 24.678928][ C1] __usb_hcd_giveback_urb+0x29a/0x550
[ 24.684278][ C1] usb_hcd_giveback_urb+0x368/0x420
[ 24.689463][ C1] dummy_timer+0x125e/0x32b4
[ 24.694040][ C1] ? dummy_udc_probe+0x980/0x980
[ 24.698953][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0
[ 24.704473][ C1] ? rcu_read_lock_bh_held+0xb0/0xb0
[ 24.709741][ C1] call_timer_fn+0x1ac/0x700
[ 24.714305][ C1] ? dummy_udc_probe+0x980/0x980
[ 24.719214][ C1] ? timer_fixup_init+0x60/0x60
[ 24.724050][ C1] ? lock_downgrade+0x720/0x720
[ 24.728885][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0
[ 24.734404][ C1] ? rcu_read_lock_bh_held+0xb0/0xb0
[ 24.739672][ C1] ? _raw_spin_unlock_irq+0x1f/0x30
[ 24.744855][ C1] ? dummy_udc_probe+0x980/0x980
[ 24.749767][ C1] run_timer_softirq+0x5f9/0x1500
[ 24.754770][ C1] ? add_timer+0x7a0/0x7a0
[ 24.759174][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0
[ 24.764693][ C1] ? rcu_read_lock_bh_held+0xb0/0xb0
[ 24.769956][ C1] __do_softirq+0x21e/0x9aa
[ 24.774436][ C1] irq_exit+0x178/0x1a0
[ 24.778579][ C1] smp_apic_timer_interrupt+0x141/0x540
[ 24.785052][ C1] apic_timer_interrupt+0xf/0x20
[ 24.789969][ C1]
[ 24.792893][ C1] RIP: 0010:default_idle+0x28/0x300
[ 24.798075][ C1] Code: cc cc 41 56 41 55 65 44 8b 2d 94 3f 6b 7a 41 54 55 53 0f 1f 44 00 00 e8 16 28 af fb e9 07 00 00 00 0f 00 2d 7a e1 4b 00 fb f4 <65> 44 8b 2d 70 3f 6b 7a 0f 1f 44 00 00 5b 5d 41 5c 41 5d 41 5e c3
[ 24.817652][ C1] RSP: 0018:ffff8881da227da8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
[ 24.826045][ C1] RAX: 0000000000000007 RBX: ffff8881da20b180 RCX: 0000000000000000
[ 24.834053][ C1] RDX: 0000000000000000 RSI: 0000000000000006 RDI: ffff8881da20b9fc
[ 24.842043][ C1] RBP: ffffed103b441630 R08: ffff8881da20b180 R09: 0000000000000000
[ 24.849992][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
[ 24.857960][ C1] R13: 0000000000000001 R14: ffffffff87e88c40 R15: 0000000000000000
[ 24.865939][ C1] ? default_idle+0x1a/0x300
[ 24.870508][ C1] do_idle+0x3e0/0x500
[ 24.874560][ C1] ? arch_cpu_idle_exit+0x40/0x40
[ 24.879563][ C1] ? _raw_spin_unlock_irqrestore+0x39/0x40
[ 24.885348][ C1] ? lockdep_hardirqs_on+0x3c7/0x5d0
[ 24.890611][ C1] cpu_startup_entry+0x14/0x20
[ 24.895352][ C1] start_secondary+0x2ae/0x390
[ 24.900093][ C1] ? set_cpu_sibling_map+0x1e90/0x1e90
[ 24.905532][ C1] secondary_startup_64+0xb6/0xc0
[ 24.910541][ C1]
[ 24.912857][ C1] The buggy address belongs to the page:
[ 24.918478][ C1] page:ffffea000732dd00 refcount:0 mapcount:0 mapping:0000000067f1dc4b index:0x0
[ 24.927556][ C1] flags: 0x200000000000000()
[ 24.932126][ C1] raw: 0200000000000000 0000000000000000 ffffea000732dd08 0000000000000000
[ 24.940687][ C1] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 24.949246][ C1] page dumped because: kasan: bad access detected
[ 24.955627][ C1]
[ 24.957930][ C1] Memory state around the buggy address:
[ 24.963549][ C1] ffff8881ccb73f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 24.971586][ C1] ffff8881ccb74000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 24.979621][ C1] >ffff8881ccb74080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 24.988186][ C1] ^
[ 24.994849][ C1] ffff8881ccb74100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 25.002888][ C1] ffff8881ccb74180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 25.010930][ C1] ==================================================================
[ 25.018982][ C1] Disabling lock debugging due to kernel taint
[ 25.025150][ C1] Kernel panic - not syncing: panic_on_warn set ...
[ 25.031725][ C1] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G B 5.7.0-rc6-syzkaller #0
[ 25.040972][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 25.050998][ C1] Call Trace:
[ 25.054258][ C1]
[ 25.057089][ C1] dump_stack+0xef/0x16e
[ 25.061305][ C1] panic+0x2aa/0x6e1
[ 25.065173][ C1] ? add_taint.cold+0x16/0x16
[ 25.069823][ C1] ? trace_hardirqs_off+0x50/0x200
[ 25.074910][ C1] ? ath9k_hif_usb_rx_cb+0xe64/0xf90
[ 25.080164][ C1] end_report+0x4d/0x53
[ 25.084291][ C1] __kasan_report.cold+0x72/0x7d
[ 25.089202][ C1] ? ath9k_hif_usb_rx_cb+0xe64/0xf90
[ 25.094473][ C1] ? ath9k_hif_usb_rx_cb+0xe64/0xf90
[ 25.099741][ C1] kasan_report+0x33/0x50
[ 25.104046][ C1] ath9k_hif_usb_rx_cb+0xe64/0xf90
[ 25.109131][ C1] ? hif_usb_mgmt_cb+0x310/0x310
[ 25.114041][ C1] ? do_raw_spin_lock+0x129/0x290
[ 25.119040][ C1] ? lock_downgrade+0x720/0x720
[ 25.123876][ C1] ? trace_hardirqs_off+0x50/0x200
[ 25.128960][ C1] __usb_hcd_giveback_urb+0x29a/0x550
[ 25.134326][ C1] usb_hcd_giveback_urb+0x368/0x420
[ 25.139517][ C1] dummy_timer+0x125e/0x32b4
[ 25.144095][ C1] ? dummy_udc_probe+0x980/0x980
[ 25.149006][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0
[ 25.154527][ C1] ? rcu_read_lock_bh_held+0xb0/0xb0
[ 25.159783][ C1] call_timer_fn+0x1ac/0x700
[ 25.164432][ C1] ? dummy_udc_probe+0x980/0x980
[ 25.169344][ C1] ? timer_fixup_init+0x60/0x60
[ 25.174164][ C1] ? lock_downgrade+0x720/0x720
[ 25.178990][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0
[ 25.184523][ C1] ? rcu_read_lock_bh_held+0xb0/0xb0
[ 25.189782][ C1] ? _raw_spin_unlock_irq+0x1f/0x30
[ 25.194952][ C1] ? dummy_udc_probe+0x980/0x980
[ 25.199861][ C1] run_timer_softirq+0x5f9/0x1500
[ 25.204858][ C1] ? add_timer+0x7a0/0x7a0
[ 25.209247][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0
[ 25.214774][ C1] ? rcu_read_lock_bh_held+0xb0/0xb0
[ 25.220033][ C1] __do_softirq+0x21e/0x9aa
[ 25.224516][ C1] irq_exit+0x178/0x1a0
[ 25.228645][ C1] smp_apic_timer_interrupt+0x141/0x540
[ 25.234163][ C1] apic_timer_interrupt+0xf/0x20
[ 25.239068][ C1]
[ 25.241981][ C1] RIP: 0010:default_idle+0x28/0x300
[ 25.247156][ C1] Code: cc cc 41 56 41 55 65 44 8b 2d 94 3f 6b 7a 41 54 55 53 0f 1f 44 00 00 e8 16 28 af fb e9 07 00 00 00 0f 00 2d 7a e1 4b 00 fb f4 <65> 44 8b 2d 70 3f 6b 7a 0f 1f 44 00 00 5b 5d 41 5c 41 5d 41 5e c3
[ 25.266745][ C1] RSP: 0018:ffff8881da227da8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
[ 25.275127][ C1] RAX: 0000000000000007 RBX: ffff8881da20b180 RCX: 0000000000000000
[ 25.283082][ C1] RDX: 0000000000000000 RSI: 0000000000000006 RDI: ffff8881da20b9fc
[ 25.291026][ C1] RBP: ffffed103b441630 R08: ffff8881da20b180 R09: 0000000000000000
[ 25.298971][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
[ 25.306914][ C1] R13: 0000000000000001 R14: ffffffff87e88c40 R15: 0000000000000000
[ 25.314879][ C1] ? default_idle+0x1a/0x300
[ 25.319446][ C1] do_idle+0x3e0/0x500
[ 25.323495][ C1] ? arch_cpu_idle_exit+0x40/0x40
[ 25.328495][ C1] ? _raw_spin_unlock_irqrestore+0x39/0x40
[ 25.334274][ C1] ? lockdep_hardirqs_on+0x3c7/0x5d0
[ 25.339538][ C1] cpu_startup_entry+0x14/0x20
[ 25.344278][ C1] start_secondary+0x2ae/0x390
[ 25.349029][ C1] ? set_cpu_sibling_map+0x1e90/0x1e90
[ 25.354473][ C1] secondary_startup_64+0xb6/0xc0
[ 25.360129][ C1] Kernel Offset: disabled
[ 25.364433][ C1] Rebooting in 86400 seconds..