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BUG: KCSAN: data-race in strlcpy / strncpy

write to 0xffff888148e0b75f of 1 bytes by task 14988 on cpu 1:
 strlcpy+0x65/0x80 lib/string.c:143
 __set_task_comm+0x3b/0x110 fs/exec.c:1225
 set_task_comm include/linux/sched.h:1924 [inline]
 __kthread_create_on_node+0x1f6/0x260 kernel/kthread.c:415
 kthread_create_on_node+0x86/0xb0 kernel/kthread.c:453
 attach_store+0x276/0x870 drivers/usb/usbip/vhci_sysfs.c:375
 dev_attr_store+0x40/0x60 drivers/base/core.c:2111
 sysfs_kf_write+0xa6/0xc0 fs/sysfs/file.c:136
 kernfs_fop_write_iter+0x1d3/0x2d0 fs/kernfs/file.c:296
 call_write_iter include/linux/fs.h:2162 [inline]
 new_sync_write fs/read_write.c:503 [inline]
 vfs_write+0x7f5/0x950 fs/read_write.c:590
 ksys_write+0xd9/0x190 fs/read_write.c:643
 __do_sys_write fs/read_write.c:655 [inline]
 __se_sys_write fs/read_write.c:652 [inline]
 __x64_sys_write+0x3e/0x50 fs/read_write.c:652
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff888148e0b75f of 1 bytes by task 14990 on cpu 0:
 strncpy+0x126/0x150 lib/string.c:114
 set_cmdline kernel/trace/trace.c:2199 [inline]
 trace_save_cmdline+0x193/0x1e0 kernel/trace/trace.c:2407
 tracing_record_taskinfo_sched_switch+0x91/0x290 kernel/trace/trace.c:2547
 probe_sched_switch+0x7c/0x90 kernel/trace/trace_sched_switch.c:34
 trace_sched_switch include/trace/events/sched.h:220 [inline]
 __schedule+0x67b/0x6a0 kernel/sched/core.c:6250
 schedule+0x81/0xb0 kernel/sched/core.c:6326
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6385
 kthread+0x239/0x2e0 kernel/kthread.c:320
 ret_from_fork+0x1f/0x30

value changed: 0x64 -> 0x00

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 14990 Comm: vhci_rx Tainted: G        W         5.16.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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vhci_hcd: connection closed