program: syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000297ff8208582005109bc10102030109021200010100800009048f0000bf575a00"], 0x0) (async) syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000297ff8208582005109bc10102030109021200010100800009048f0000bf575a00"], 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mysys\x00', 0x1ff) mount(&(0x7f0000000040)=@filename='none\x00', &(0x7f0000000080)='./mysys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0) getresuid(&(0x7f0000000000), &(0x7f0000000040), &(0x7f0000000080)) write(r0, &(0x7f0000000200)='dummy_hcd.0\x00', 0xb) (async) write(r0, &(0x7f0000000200)='dummy_hcd.0\x00', 0xb) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000300)='./mysys/bus/platform/drivers/dummy_hcd/bind\x00', 0x1, 0x0) write(r1, &(0x7f0000000400)='dummy_hcd.0\x00', 0xb) (async) write(r1, &(0x7f0000000400)='dummy_hcd.0\x00', 0xb) close(r1) [ 125.013854][ T4642] Bluetooth: hci0: command tx timeout [ 125.163198][ T5320] UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy [ 125.172476][ T5320] misc raw-gadget: fail, usb_gadget_register_driver returned -16 [ 125.189270][ T5320] dummy_hcd dummy_hcd.0: remove, state 1 [ 125.192736][ T4656] hub 5-0:1.0: activate --> -108 [ 125.197494][ T4656] hub 5-0:1.0: hub_ext_port_status failed (err = -108) [ 125.237610][ T5320] usb usb5: USB disconnect, device number 1 [ 125.307855][ T5320] dummy_hcd dummy_hcd.0: stopped [ 125.310288][ T5320] dummy_hcd dummy_hcd.0: USB bus 5 deregistered [ 125.338758][ T5320] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI [ 125.343929][ T5320] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 125.347520][ T5320] CPU: 0 UID: 0 PID: 5320 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 125.351388][ T5320] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 125.355713][ T5320] RIP: 0010:set_link_state+0x27/0x1000 [ 125.358095][ T5320] 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 [ 125.366011][ T5320] RSP: 0018:ffffc9000e1bf780 EFLAGS: 00010046 [ 125.368610][ T5320] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff88801257cb00 [ 125.371988][ T5320] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 125.375299][ T5320] RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004 [ 125.378651][ T5320] R10: dffffc0000000000 R11: fffff52001c37eec R12: 0000000000000246 [ 125.382167][ T5320] R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000 [ 125.385574][ T5320] FS: 0000000000000000(0000) GS:ffff88808c30a000(0000) knlGS:0000000000000000 [ 125.389329][ T5320] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 125.392184][ T5320] CR2: 00007ffc62dfdfb8 CR3: 00000000444e1000 CR4: 0000000000352ef0 [ 125.395648][ T5320] Call Trace: [ 125.397138][ T5320] [ 125.398455][ T5320] ? rcu_is_watching+0x16/0xb0 [ 125.400609][ T5320] ? __pfx_dummy_pullup+0x10/0x10 [ 125.402737][ T5320] dummy_pullup+0xc4/0x120 [ 125.404613][ T5320] ? __pfx_dummy_pullup+0x10/0x10 [ 125.406745][ T5320] usb_gadget_disconnect_locked+0x126/0x480 [ 125.409251][ T5320] gadget_unbind_driver+0xc2/0x410 [ 125.411470][ T5320] ? __pfx_gadget_unbind_driver+0x10/0x10 [ 125.413892][ T5320] device_release_driver_internal+0x48b/0x880 [ 125.416599][ T5320] driver_detach+0x1f3/0x2d0 [ 125.418650][ T5320] bus_remove_driver+0x226/0x320 [ 125.420778][ T5320] usb_gadget_unregister_driver+0x4e/0x70 [ 125.423139][ T5320] raw_release+0xd7/0x260 [ 125.424996][ T5320] ? __pfx_raw_release+0x10/0x10 [ 125.427044][ T5320] __fput+0x418/0xa50 [ 125.428728][ T5320] task_work_run+0x1d9/0x270 [ 125.430671][ T5320] ? __pfx_task_work_run+0x10/0x10 [ 125.432817][ T5320] ? do_raw_spin_unlock+0x4d/0x200 [ 125.434983][ T5320] do_exit+0x73a/0x2360 [ 125.436853][ T5320] ? __pfx_do_exit+0x10/0x10 [ 125.438829][ T5320] ? do_raw_spin_lock+0x12b/0x2f0 [ 125.441031][ T5320] do_group_exit+0x22d/0x2f0 [ 125.443074][ T5320] ? _raw_spin_unlock_irq+0x23/0x50 [ 125.445364][ T5320] get_signal+0x121b/0x12c0 [ 125.447311][ T5320] arch_do_signal_or_restart+0xbb/0x860 [ 125.449653][ T5320] ? __pfx_arch_do_signal_or_restart+0x10/0x10 [ 125.452372][ T5320] ? ksys_write+0x242/0x270 [ 125.454377][ T5320] exit_to_user_mode_loop+0x10e/0x770 [ 125.456598][ T5320] ? rcu_is_watching+0x16/0xb0 [ 125.459093][ T5320] do_syscall_64+0x328/0x520 [ 125.461362][ T5320] ? trace_irq_disable+0x3b/0x140 [ 125.463547][ T5320] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 125.466182][ T5320] ? clear_bhb_loop+0x70/0xc0 [ 125.468247][ T5320] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 125.470749][ T5320] RIP: 0033:0x7fc66cf9e0d9 [ 125.472812][ T5320] Code: Unable to access opcode bytes at 0x7fc66cf9e0af. [ 125.475943][ T5320] RSP: 002b:00007fc66decffe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 125.479558][ T5320] RAX: 000000000000000b RBX: 00007fc66d226090 RCX: 00007fc66cf9e0d9 [ 125.482969][ T5320] RDX: 000000000000000b RSI: 0000200000000200 RDI: 0000000000000005 [ 125.486378][ T5320] RBP: 00007fc66d035024 R08: 0000000000000000 R09: 0000000000000000 [ 125.489655][ T5320] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 125.493025][ T5320] R13: 00007fc66d226128 R14: 00007fc66d226090 R15: 00007ffd461d8e48 [ 125.496392][ T5320] [ 125.497692][ T5320] Modules linked in: [ 125.499524][ T5320] ---[ end trace 0000000000000000 ]--- [ 125.501887][ T5320] RIP: 0010:set_link_state+0x27/0x1000 [ 125.504195][ T5320] 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 [ 125.512308][ T5320] RSP: 0018:ffffc9000e1bf780 EFLAGS: 00010046 [ 125.514914][ T5320] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff88801257cb00 [ 125.518287][ T5320] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 125.521622][ T5320] RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004 [ 125.525002][ T5320] R10: dffffc0000000000 R11: fffff52001c37eec R12: 0000000000000246 [ 125.528360][ T5320] R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000 [ 125.531697][ T5320] FS: 0000000000000000(0000) GS:ffff88808c30a000(0000) knlGS:0000000000000000 [ 125.535350][ T5320] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 125.538129][ T5320] CR2: 00007ffc62dfdfb8 CR3: 00000000444e1000 CR4: 0000000000352ef0 [ 125.541462][ T5320] Kernel panic - not syncing: Fatal exception [ 125.544589][ T5320] Kernel Offset: disabled [ 125.546411][ T5320] Rebooting in 86400 seconds..