gadgetfs: bound to dummy_udc driver
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 UID: 0 PID: 8028 Comm: syz.6.13505 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:dummy_udc_start+0xd0/0x1f0
Code: 41 83 ff 03 74 18 41 83 ff 05 0f 85 93 00 00 00 e8 f5 e3 0f fa eb 0c e8 ee e3 0f fa eb 05 e8 e7 e3 0f fa 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 f7 e8 41 e0 7d fa 4d 8b 36 4c 89 f7 e8
RSP: 0018:ffffc9000718f850 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffffff8fa53f60 RCX: 0000000000080000
RDX: ffffc90022059000 RSI: 0000000000001e88 RDI: 0000000000001e89
RBP: ffff888106b61000 R08: ffff8881a3499e00 R09: 0000000000000004
R10: 0000000000000005 R11: 0000000000000002 R12: dffffc0000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000003
FS:  00007f8ab73f66c0(0000) GS:ffff8882a8f49000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31723ffc CR3: 000000016b03c000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 gadget_bind_driver+0x3a8/0x9e0
 really_probe+0x254/0xae0
 __driver_probe_device+0x1e8/0x360
 driver_probe_device+0x4f/0x240
 __driver_attach+0x339/0x600
 bus_for_each_dev+0x23b/0x2c0
 bus_add_driver+0x345/0x670
 driver_register+0x23a/0x320
 usb_gadget_register_driver_owner+0xf9/0x270
 dev_config+0xe3c/0x12a0
 vfs_write+0x296/0xba0
 ksys_write+0x150/0x270
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8ab919e0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8ab73f6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8ab9425fa0 RCX: 00007f8ab919e0d9
RDX: 0000000000000048 RSI: 0000200000000200 RDI: 0000000000000003
RBP: 00007f8ab9235024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8ab9426038 R14: 00007f8ab9425fa0 R15: 00007ffd2a642f88
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dummy_udc_start+0xd0/0x1f0
Code: 41 83 ff 03 74 18 41 83 ff 05 0f 85 93 00 00 00 e8 f5 e3 0f fa eb 0c e8 ee e3 0f fa eb 05 e8 e7 e3 0f fa 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 f7 e8 41 e0 7d fa 4d 8b 36 4c 89 f7 e8
RSP: 0018:ffffc9000718f850 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffffff8fa53f60 RCX: 0000000000080000
RDX: ffffc90022059000 RSI: 0000000000001e88 RDI: 0000000000001e89
RBP: ffff888106b61000 R08: ffff8881a3499e00 R09: 0000000000000004
R10: 0000000000000005 R11: 0000000000000002 R12: dffffc0000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000003
FS:  00007f8ab73f66c0(0000) GS:ffff8882a8f49000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8ab73d4ff8 CR3: 000000016b03c000 CR4: 00000000000006f0
