UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
==================================================================
BUG: KCSAN: data-race in data_push_tail / string

write to 0xffffffff88e6764e of 1 bytes by task 30398 on cpu 0:
 string_nocheck lib/vsprintf.c:643 [inline]
 string+0x17d/0x210 lib/vsprintf.c:721
 vsnprintf+0x539/0x8a0 lib/vsprintf.c:2852
 va_format lib/vsprintf.c:1715 [inline]
 pointer+0x849/0xcf0 lib/vsprintf.c:2474
 vsnprintf+0x48f/0x8a0 lib/vsprintf.c:2856
 vscnprintf+0x42/0x90 lib/vsprintf.c:2917
 printk_sprint+0x30/0x2d0 kernel/printk/printk.c:2216
 vprintk_store+0x583/0x860 kernel/printk/printk.c:2336
 vprintk_emit+0x1a0/0x6c0 kernel/printk/printk.c:2426
 dev_vprintk_emit+0x24a/0x2a0 drivers/base/core.c:4891
 dev_printk_emit+0x84/0xb0 drivers/base/core.c:4902
 __netdev_printk+0x352/0x3e0 net/core/dev.c:12392
 netdev_info+0x9e/0xd0 net/core/dev.c:12447
 netif_change_name+0x64a/0x6d0 net/core/dev.c:1412
 do_setlink+0x8e3/0x2430 net/core/rtnetlink.c:3132
 rtnl_changelink net/core/rtnetlink.c:3772 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3931 [inline]
 rtnl_newlink+0xe84/0x12d0 net/core/rtnetlink.c:4068
 rtnetlink_rcv_msg+0x65a/0x740 net/core/rtnetlink.c:6958
 netlink_rcv_skb+0x12f/0x230 net/netlink/af_netlink.c:2534
 rtnetlink_rcv+0x1c/0x30 net/core/rtnetlink.c:6985
 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
 netlink_unicast+0x605/0x6c0 net/netlink/af_netlink.c:1339
 netlink_sendmsg+0x609/0x720 net/netlink/af_netlink.c:1883
 sock_sendmsg_nosec net/socket.c:712 [inline]
 __sock_sendmsg+0x140/0x180 net/socket.c:727
 __sys_sendto+0x1aa/0x230 net/socket.c:2180
 __do_sys_sendto net/socket.c:2187 [inline]
 __se_sys_sendto net/socket.c:2183 [inline]
 __x64_sys_sendto+0x78/0x90 net/socket.c:2183
 x64_sys_call+0x2bcb/0x2e10 arch/x86/include/generated/asm/syscalls_64.h:45
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffffffff88e67648 of 8 bytes by task 30543 on cpu 1:
 data_make_reusable kernel/printk/printk_ringbuffer.c:594 [inline]
 data_push_tail+0x107/0x440 kernel/printk/printk_ringbuffer.c:679
 data_alloc+0xbd/0x2c0 kernel/printk/printk_ringbuffer.c:1054
 prb_reserve+0x86a/0xb80 kernel/printk/printk_ringbuffer.c:1669
 vprintk_store+0x552/0x860 kernel/printk/printk.c:2326
 vprintk_emit+0x1a0/0x6c0 kernel/printk/printk.c:2426
 vprintk_default+0x26/0x30 kernel/printk/printk.c:2465
 vprintk+0x1d/0x30 kernel/printk/printk_safe.c:82
 _printk+0x7f/0xb0 kernel/printk/printk.c:2475
 usb_gadget_register_driver_owner+0x179/0x1a0 drivers/usb/gadget/udc/core.c:1710
 raw_ioctl_run drivers/usb/gadget/legacy/raw_gadget.c:595 [inline]
 raw_ioctl+0xc8a/0x1f10 drivers/usb/gadget/legacy/raw_gadget.c:1306
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl+0xc9/0x140 fs/ioctl.c:892
 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:892
 x64_sys_call+0x168d/0x2e10 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x0000000100003b3d -> 0x7465206d6f726620

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 30543 Comm: syz.6.9590 Not tainted 6.15.0-rc2-syzkaller #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
==================================================================
misc raw-gadget: fail, usb_gadget_register_driver returned -16
9pnet_fd: Insufficient options for proto=fd