vhci_hcd vhci_hcd.0: Device attached
==================================================================
BUG: KCSAN: data-race in data_push_tail / string

write to 0xffffffff86e51e38 of 1 bytes by task 15233 on cpu 0:
 string_nocheck lib/vsprintf.c:647 [inline]
 string+0x17b/0x220 lib/vsprintf.c:725
 vsnprintf+0xb57/0xe80 lib/vsprintf.c:2806
 vscnprintf+0x3e/0x80 lib/vsprintf.c:2912
 printk_sprint kernel/printk/printk.c:2099 [inline]
 vprintk_store+0x61d/0xb40 kernel/printk/printk.c:2209
 vprintk_emit+0xcc/0x430 kernel/printk/printk.c:2256
 dev_vprintk_emit+0x1c9/0x1ed drivers/base/core.c:4604
 dev_printk_emit+0x7e/0xa2 drivers/base/core.c:4615
 __dev_printk+0xfa/0x110 drivers/base/core.c:4627
 _dev_info+0x9d/0xc1 drivers/base/core.c:4673
 attach_store+0x628/0x6d0 drivers/usb/usbip/vhci_sysfs.c:438
 dev_attr_store+0x40/0x60 drivers/base/core.c:2110
 sysfs_kf_write+0xa6/0xc0 fs/sysfs/file.c:136
 kernfs_fop_write_iter+0x1d3/0x2c0 fs/kernfs/file.c:291
 call_write_iter include/linux/fs.h:2050 [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+0x44/0xae

read to 0xffffffff86e51e38 of 8 bytes by task 15232 on cpu 1:
 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+0x54d/0xb40 kernel/printk/printk.c:2199
 vprintk_emit+0xcc/0x430 kernel/printk/printk.c:2256
 dev_vprintk_emit+0x1c9/0x1ed drivers/base/core.c:4604
 dev_printk_emit+0x7e/0xa2 drivers/base/core.c:4615
 __dev_printk+0xfa/0x110 drivers/base/core.c:4627
 _dev_info+0x9d/0xc1 drivers/base/core.c:4673
 attach_store+0x628/0x6d0 drivers/usb/usbip/vhci_sysfs.c:438
 dev_attr_store+0x40/0x60 drivers/base/core.c:2110
 sysfs_kf_write+0xa6/0xc0 fs/sysfs/file.c:136
 kernfs_fop_write_iter+0x1d3/0x2c0 fs/kernfs/file.c:291
 call_write_iter include/linux/fs.h:2050 [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+0x44/0xae

value changed: 0x0000000100008d03 -> 0x6463685f69636876

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 15232 Comm: syz-executor.0 Not tainted 5.18.0-rc7-syzkaller-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================
vhci_hcd vhci_hcd.0: pdev(0) rhport(3) sockfd(19)
vhci_hcd vhci_hcd.0: devid(0) speed(4) speed_str(wireless)
vhci_hcd vhci_hcd.0: Device attached
vhci_hcd vhci_hcd.0: pdev(0) rhport(5) sockfd(24)
vhci_hcd vhci_hcd.0: devid(0) speed(4) speed_str(wireless)
vhci_hcd vhci_hcd.0: Device attached
vhci_hcd vhci_hcd.0: pdev(0) rhport(7) sockfd(29)
vhci_hcd vhci_hcd.0: devid(0) speed(4) speed_str(wireless)
vhci_hcd vhci_hcd.0: Device attached