vhci_hcd: Failed attach request for unsupported USB speed: UNKNOWN
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BUG: KCSAN: data-race in data_push_tail / string

write to 0xffffffff86e7d868 of 1 bytes by task 30576 on cpu 1:
 string_nocheck lib/vsprintf.c:647 [inline]
 string+0x17b/0x220 lib/vsprintf.c:725
 vsnprintf+0xb57/0xe80 lib/vsprintf.c:2782
 vscnprintf+0x3e/0x80 lib/vsprintf.c:2888
 printk_sprint kernel/printk/printk.c:2225 [inline]
 vprintk_store+0x5f2/0xb50 kernel/printk/printk.c:2339
 vprintk_emit+0xcc/0x4e0 kernel/printk/printk.c:2385
 dev_vprintk_emit+0x1c9/0x1ed drivers/base/core.c:4616
 dev_printk_emit+0x7e/0xa2 drivers/base/core.c:4627
 __dev_printk+0xfa/0x110 drivers/base/core.c:4639
 _dev_info+0x9d/0xc1 drivers/base/core.c:4685
 attach_store+0x628/0x6d0 drivers/usb/usbip/vhci_sysfs.c:438
 dev_attr_store+0x40/0x60 drivers/base/core.c:2111
 sysfs_kf_write+0xa6/0xc0 fs/sysfs/file.c:136
 kernfs_fop_write_iter+0x1d3/0x2c0 fs/kernfs/file.c:290
 call_write_iter include/linux/fs.h:2058 [inline]
 new_sync_write fs/read_write.c:504 [inline]
 vfs_write+0x71c/0x890 fs/read_write.c:591
 ksys_write+0xe8/0x1a0 fs/read_write.c:644
 __do_sys_write fs/read_write.c:656 [inline]
 __se_sys_write fs/read_write.c:653 [inline]
 __x64_sys_write+0x3e/0x50 fs/read_write.c:653
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0

read to 0xffffffff86e7d868 of 8 bytes by task 30578 on cpu 0:
 data_make_reusable kernel/printk/printk_ringbuffer.c:590 [inline]
 data_push_tail+0x10f/0x440 kernel/printk/printk_ringbuffer.c:675
 data_alloc+0xbc/0x2b0 kernel/printk/printk_ringbuffer.c:1046
 prb_reserve+0x897/0xbd0 kernel/printk/printk_ringbuffer.c:1555
 vprintk_store+0x51c/0xb50 kernel/printk/printk.c:2329
 vprintk_emit+0xcc/0x4e0 kernel/printk/printk.c:2385
 vprintk_default+0x22/0x30 kernel/printk/printk.c:2415
 vprintk+0x7f/0x90 kernel/printk/printk_safe.c:52
 _printk+0x76/0x96 kernel/printk/printk.c:2425
 valid_args drivers/usb/usbip/vhci_sysfs.c:288 [inline]
 attach_store+0x36e/0x6d0 drivers/usb/usbip/vhci_sysfs.c:340
 dev_attr_store+0x40/0x60 drivers/base/core.c:2111
 sysfs_kf_write+0xa6/0xc0 fs/sysfs/file.c:136
 kernfs_fop_write_iter+0x1d3/0x2c0 fs/kernfs/file.c:290
 call_write_iter include/linux/fs.h:2058 [inline]
 new_sync_write fs/read_write.c:504 [inline]
 vfs_write+0x71c/0x890 fs/read_write.c:591
 ksys_write+0xe8/0x1a0 fs/read_write.c:644
 __do_sys_write fs/read_write.c:656 [inline]
 __se_sys_write fs/read_write.c:653 [inline]
 __x64_sys_write+0x3e/0x50 fs/read_write.c:653
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0

value changed: 0x00000001000087fe -> 0x000000203a302e64

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 30578 Comm: syz-executor.0 Not tainted 5.19.0-rc3-syzkaller-00146-g92f20ff72066-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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