general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 PID: 6916 Comm: syz.5.613 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
RIP: 0010:dummy_set_selfpowered+0xb7/0x150 drivers/usb/gadget/udc/dummy_hcd.c:884
Code: 94 c0 4d 8d b4 c6 f8 06 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 13 b4 87 fb 4d 8b 3e 4c 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ff e8 fa b3 87 fb 41 be f0 12 00 00 4d
RSP: 0018:ffffc900035efa38 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffff88802210bb80
RDX: 0000000000000002 RSI: 0000000000000003 RDI: 0000000000000005
RBP: 0000000000000003 R08: ffffffff8c44fd07 R09: 1ffffffff1889fa0
R10: dffffc0000000000 R11: fffffbfff1889fa1 R12: dffffc0000000000
R13: ffff88807bd1b4b8 R14: ffff8880221652f8 R15: 0000000000000000
FS:  00007f9d14b186c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33420ff8 CR3: 00000000520ac000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 usb_gadget_set_selfpowered+0x6a/0x230 drivers/usb/gadget/udc/core.c:561
 composite_dev_prepare+0x2f3/0x310 drivers/usb/gadget/composite.c:2323
 configfs_composite_bind+0xa1/0xf60 drivers/usb/gadget/configfs.c:1310
 udc_bind_to_driver+0x203/0x5f0 drivers/usb/gadget/udc/core.c:1574
 usb_gadget_probe_driver+0x1fb/0x380 drivers/usb/gadget/udc/core.c:1637
 gadget_dev_desc_UDC_store+0x1ba/0x2e0 drivers/usb/gadget/configfs.c:289
 flush_write_buffer fs/configfs/file.c:207 [inline]
 configfs_write_iter+0x30b/0x400 fs/configfs/file.c:229
 call_write_iter include/linux/fs.h:2173 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x748/0xd70 fs/read_write.c:594
 ksys_write+0x153/0x260 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f9d168bfe99
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:00007f9d14b18028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f9d16b47fa0 RCX: 00007f9d168bfe99
RDX: 000000000000000c RSI: 0000200000000600 RDI: 0000000000000003
RBP: 00007f9d16955eaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9d16b48038 R14: 00007f9d16b47fa0 R15: 00007ffe123fd7b8
 </TASK>
Modules linked in:
---[ end trace 6f14ebf5a29846ae ]---
RIP: 0010:dummy_set_selfpowered+0xb7/0x150 drivers/usb/gadget/udc/dummy_hcd.c:884
Code: 94 c0 4d 8d b4 c6 f8 06 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 13 b4 87 fb 4d 8b 3e 4c 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ff e8 fa b3 87 fb 41 be f0 12 00 00 4d
RSP: 0018:ffffc900035efa38 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffff88802210bb80
RDX: 0000000000000002 RSI: 0000000000000003 RDI: 0000000000000005
RBP: 0000000000000003 R08: ffffffff8c44fd07 R09: 1ffffffff1889fa0
R10: dffffc0000000000 R11: fffffbfff1889fa1 R12: dffffc0000000000
R13: ffff88807bd1b4b8 R14: ffff8880221652f8 R15: 0000000000000000
FS:  00007f9d14b186c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7aaa969ff8 CR3: 00000000520ac000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	94                   	xchg   %eax,%esp
   1:	c0 4d 8d b4          	rorb   $0xb4,-0x73(%rbp)
   5:	c6 f8 06             	xabort $0x6
   8:	00 00                	add    %al,(%rax)
   a:	4c 89 f0             	mov    %r14,%rax
   d:	48 c1 e8 03          	shr    $0x3,%rax
  11:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
  16:	74 08                	je     0x20
  18:	4c 89 f7             	mov    %r14,%rdi
  1b:	e8 13 b4 87 fb       	call   0xfb87b433
  20:	4d 8b 3e             	mov    (%r14),%r15
  23:	4c 89 f8             	mov    %r15,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 ff             	mov    %r15,%rdi
  34:	e8 fa b3 87 fb       	call   0xfb87b433
  39:	41 be f0 12 00 00    	mov    $0x12f0,%r14d
  3f:	4d                   	rex.WRB