program: syz_usb_connect(0x3, 0x32, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000200000040c60511920000010203010902200001010080fa0904000002ffffff000705810200020007050202000200"], 0x0) (async) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys\x00', 0x1ff) (async) mount(&(0x7f0000000140)=@filename='none\x00', &(0x7f0000000180)='./mysys\x00', &(0x7f00000001c0)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0) write(r0, &(0x7f0000000240)='dummy_hcd.0\x00', 0xb) (async, rerun: 32) r1 = openat$tun(0xffffffffffffff9c, &(0x7f00000001c0), 0xa2f01, 0x0) (rerun: 32) ioctl$TUNSETIFF(r1, 0x400454ca, &(0x7f00000000c0)={'syzkaller1\x00', 0x6bf1c2d5adba8c32}) (async) r2 = socket$inet6_tcp(0xa, 0x1, 0x0) r3 = dup(r2) ioctl$SIOCSIFHWADDR(r3, 0x8914, &(0x7f0000000040)={'syzkaller1\x00', @link_local={0x1, 0x80, 0xc2, 0x0, 0x0, 0x2}}) write$tun(r1, &(0x7f0000000100)={@val={0x0, 0x88a8}, @void, @eth={@multicast, @remote, @void, {@ipv4={0x800, @generic={{0x5, 0x4, 0x1, 0x22, 0x14, 0x68, 0x0, 0x9, 0x11, 0x0, @remote, @multicast1}}}}}}, 0x26) (async) close(r0) (async) r4 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./mysys/bus/platform/drivers/dummy_hcd/bind\x00', 0x1, 0x0) (async) write(r0, &(0x7f0000000080)="64010000589c0bcce659f865", 0xc) recvmsg(r4, &(0x7f0000001840)={&(0x7f0000000280)=@caif=@rfm, 0x80, &(0x7f00000017c0)=[{&(0x7f0000000440)=""/4096, 0x1000}, {&(0x7f0000001440)=""/50, 0x32}, {&(0x7f0000001480)}, {&(0x7f00000014c0)=""/74, 0x4a}, {&(0x7f0000001540)=""/215, 0xd7}, {&(0x7f0000001640)=""/234, 0xea}, {&(0x7f0000001740)=""/107, 0x6b}], 0x7}, 0x102) (async, rerun: 32) close(r4) (async, rerun: 32) nanosleep(&(0x7f0000000400)={0x1}, 0x0) [ 117.969512][ T4637] Bluetooth: hci0: command tx timeout [ 118.111106][ T5317] dummy_hcd dummy_hcd.0: remove, state 1 [ 118.201568][ T9] hub 5-0:1.0: activate --> -108 [ 118.205754][ T9] hub 5-0:1.0: hub_ext_port_status failed (err = -108) [ 118.208909][ T5317] usb usb5: USB disconnect, device number 1 [ 118.243212][ T5317] dummy_hcd dummy_hcd.0: stopped [ 118.245505][ T5317] dummy_hcd dummy_hcd.0: USB bus 5 deregistered [ 118.284180][ T5317] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI [ 118.290082][ T5317] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 118.293519][ T5317] CPU: 0 UID: 0 PID: 5317 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 118.297423][ T5317] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 118.301688][ T5317] RIP: 0010:set_link_state+0x27/0x1000 [ 118.304082][ T5317] Code: 90 90 90 55 41 57 41 56 41 55 41 54 53 48 83 ec 38 49 89 fe 48 bb 00 00 00 00 00 fc ff df e8 00 89 09 fa 4c 89 f0 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 f7 e8 4b d1 7a fa 49 8b 16 4d 8d a6 a3 00 [ 118.312154][ T5317] RSP: 0018:ffffc9000dd2f780 EFLAGS: 00010046 [ 118.314774][ T5317] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff888033264b00 [ 118.318035][ T5317] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 118.321371][ T5317] RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004 [ 118.324468][ T5317] R10: dffffc0000000000 R11: fffff52001ba5eec R12: 0000000000000246 [ 118.327417][ T5317] R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000 [ 118.330304][ T5317] FS: 0000000000000000(0000) GS:ffff88808c30a000(0000) knlGS:0000000000000000 [ 118.333566][ T5317] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 118.335982][ T5317] CR2: 000056318f5f60c0 CR3: 000000001faef000 CR4: 0000000000352ef0 [ 118.339263][ T5317] Call Trace: [ 118.340650][ T5317] [ 118.341928][ T5317] ? rcu_is_watching+0x16/0xb0 [ 118.343993][ T5317] ? __pfx_dummy_pullup+0x10/0x10 [ 118.346196][ T5317] dummy_pullup+0xc4/0x120 [ 118.348189][ T5317] ? __pfx_dummy_pullup+0x10/0x10 [ 118.350696][ T5317] usb_gadget_disconnect_locked+0x126/0x480 [ 118.353822][ T5317] gadget_unbind_driver+0xc2/0x410 [ 118.356489][ T5317] ? __pfx_gadget_unbind_driver+0x10/0x10 [ 118.359192][ T5317] device_release_driver_internal+0x48b/0x880 [ 118.361727][ T5317] driver_detach+0x1f3/0x2d0 [ 118.363695][ T5317] bus_remove_driver+0x226/0x320 [ 118.365802][ T5317] usb_gadget_unregister_driver+0x4e/0x70 [ 118.368163][ T5317] raw_release+0xd7/0x260 [ 118.370082][ T5317] ? __pfx_raw_release+0x10/0x10 [ 118.372192][ T5317] __fput+0x418/0xa50 [ 118.373839][ T5317] task_work_run+0x1d9/0x270 [ 118.375813][ T5317] ? __pfx_task_work_run+0x10/0x10 [ 118.377892][ T5317] ? do_raw_spin_unlock+0x4d/0x200 [ 118.379836][ T5317] do_exit+0x73a/0x2360 [ 118.381499][ T5317] ? __pfx_do_exit+0x10/0x10 [ 118.383329][ T5317] ? do_raw_spin_lock+0x12b/0x2f0 [ 118.385492][ T5317] do_group_exit+0x22d/0x2f0 [ 118.387581][ T5317] ? _raw_spin_unlock_irq+0x23/0x50 [ 118.389809][ T5317] get_signal+0x121b/0x12c0 [ 118.391534][ T5317] arch_do_signal_or_restart+0xbb/0x860 [ 118.393541][ T5317] ? __pfx_arch_do_signal_or_restart+0x10/0x10 [ 118.396142][ T5317] ? ksys_write+0x242/0x270 [ 118.397910][ T5317] exit_to_user_mode_loop+0x10e/0x770 [ 118.400182][ T5317] ? rcu_is_watching+0x16/0xb0 [ 118.402245][ T5317] do_syscall_64+0x328/0x520 [ 118.404178][ T5317] ? trace_irq_disable+0x3b/0x140 [ 118.406020][ T5317] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 118.408127][ T5317] ? clear_bhb_loop+0x70/0xc0 [ 118.409864][ T5317] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 118.412091][ T5317] RIP: 0033:0x7f800d39e0d9 [ 118.413947][ T5317] Code: Unable to access opcode bytes at 0x7f800d39e0af. [ 118.416832][ T5317] RSP: 002b:00007f800e2e0fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 118.420253][ T5317] RAX: 000000000000000b RBX: 00007f800d626090 RCX: 00007f800d39e0d9 [ 118.423459][ T5317] RDX: 000000000000000b RSI: 0000200000000240 RDI: 0000000000000004 [ 118.426725][ T5317] RBP: 00007f800d435024 R08: 0000000000000000 R09: 0000000000000000 [ 118.430471][ T5317] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 118.434057][ T5317] R13: 00007f800d626128 R14: 00007f800d626090 R15: 00007fff9f705768 [ 118.437399][ T5317] [ 118.438835][ T5317] Modules linked in: [ 118.440535][ T5317] ---[ end trace 0000000000000000 ]--- [ 118.443568][ T5317] RIP: 0010:set_link_state+0x27/0x1000 [ 118.446113][ T5317] Code: 90 90 90 55 41 57 41 56 41 55 41 54 53 48 83 ec 38 49 89 fe 48 bb 00 00 00 00 00 fc ff df e8 00 89 09 fa 4c 89 f0 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 f7 e8 4b d1 7a fa 49 8b 16 4d 8d a6 a3 00 [ 118.453947][ T5317] RSP: 0018:ffffc9000dd2f780 EFLAGS: 00010046 [ 118.456488][ T5317] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff888033264b00 [ 118.459681][ T5317] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 118.462760][ T5317] RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004 [ 118.465940][ T5317] R10: dffffc0000000000 R11: fffff52001ba5eec R12: 0000000000000246 [ 118.469119][ T5317] R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000 [ 118.472181][ T5317] FS: 0000000000000000(0000) GS:ffff88808c30a000(0000) knlGS:0000000000000000 [ 118.475642][ T5317] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 118.478246][ T5317] CR2: 000056318f5f60c0 CR3: 000000001faef000 CR4: 0000000000352ef0 [ 118.481241][ T5317] Kernel panic - not syncing: Fatal exception [ 118.484240][ T5317] Kernel Offset: disabled [ 118.486132][ T5317] Rebooting in 86400 seconds..