------------[ cut here ]------------
kernel BUG at net/core/dev.c:11340!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 26722 Comm: syz.9.5394 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
RIP: 0010:register_netdevice+0x1e8c/0x1eb0 net/core/dev.c:11340
Code: ff 44 89 f1 80 e1 07 38 c1 0f 8c be fb ff ff 4c 89 f7 e8 e7 3a 90 f8 e9 b1 fb ff ff e8 4d a2 22 f8 90 0f 0b e8 45 a2 22 f8 90 <0f> 0b e8 3d a2 22 f8 90 0f 0b e8 35 a2 22 f8 41 be 42 00 00 00 e9
RSP: 0018:ffffc900053d7560 EFLAGS: 00010283
RAX: ffffffff89a4728b RBX: 1ffff92000a7aec0 RCX: 0000000000080000
RDX: ffffc90014a76000 RSI: 0000000000001428 RDI: 0000000000001429
RBP: ffffc900053d76e0 R08: ffffffff9002de67 R09: 1ffffffff2005bcc
R10: dffffc0000000000 R11: fffffbfff2005bcd R12: ffff88807b07cf10
R13: dffffc0000000000 R14: 0000000000000003 R15: ffff88807b07c000
FS:  00007f3e85cab6c0(0000) GS:ffff888124f4b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f00f17f0078 CR3: 000000005c581000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 register_netdev+0x40/0x60 net/core/dev.c:11562
 gether_register_netdev+0x84/0x180 drivers/usb/gadget/function/u_ether.c:873
 ncm_bind+0x717/0xdc0 drivers/usb/gadget/function/f_ncm.c:1470
 usb_add_function+0x2e1/0x9f0 drivers/usb/gadget/composite.c:333
 configfs_composite_bind+0xde0/0x1410 drivers/usb/gadget/configfs.c:1802
 gadget_bind_driver+0x2ca/0x9e0 drivers/usb/gadget/udc/core.c:1662
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x254/0xae0 drivers/base/dd.c:706
 __driver_probe_device+0x1e8/0x360 drivers/base/dd.c:868
 driver_probe_device+0x4f/0x240 drivers/base/dd.c:898
 __driver_attach+0x339/0x600 drivers/base/dd.c:1292
 bus_for_each_dev+0x23b/0x2c0 drivers/base/bus.c:383
 bus_add_driver+0x345/0x670 drivers/base/bus.c:763
 driver_register+0x23a/0x320 drivers/base/driver.c:174
 usb_gadget_register_driver_owner+0xf9/0x270 drivers/usb/gadget/udc/core.c:1752
 gadget_dev_desc_UDC_store+0x1c9/0x2f0 drivers/usb/gadget/configfs.c:300
 flush_write_buffer fs/configfs/file.c:207 [inline]
 configfs_write_iter+0x337/0x430 fs/configfs/file.c:229
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x612/0xba0 fs/read_write.c:687
 ksys_write+0x150/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3e84d9e019
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:00007f3e85cab028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f3e85025fa0 RCX: 00007f3e84d9e019
RDX: 000000000000000c RSI: 0000200000000480 RDI: 0000000000000003
RBP: 00007f3e84e3500c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3e85026038 R14: 00007f3e85025fa0 R15: 00007fff2e80bf78
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:register_netdevice+0x1e8c/0x1eb0 net/core/dev.c:11340
Code: ff 44 89 f1 80 e1 07 38 c1 0f 8c be fb ff ff 4c 89 f7 e8 e7 3a 90 f8 e9 b1 fb ff ff e8 4d a2 22 f8 90 0f 0b e8 45 a2 22 f8 90 <0f> 0b e8 3d a2 22 f8 90 0f 0b e8 35 a2 22 f8 41 be 42 00 00 00 e9
RSP: 0018:ffffc900053d7560 EFLAGS: 00010283
RAX: ffffffff89a4728b RBX: 1ffff92000a7aec0 RCX: 0000000000080000
RDX: ffffc90014a76000 RSI: 0000000000001428 RDI: 0000000000001429
RBP: ffffc900053d76e0 R08: ffffffff9002de67 R09: 1ffffffff2005bcc
R10: dffffc0000000000 R11: fffffbfff2005bcd R12: ffff88807b07cf10
R13: dffffc0000000000 R14: 0000000000000003 R15: ffff88807b07c000
FS:  00007f3e85cab6c0(0000) GS:ffff88812504b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055fcbde68950 CR3: 000000005c581000 CR4: 0000000000350ef0