==================================================================
BUG: KCSAN: data-race in strlcpy / strncpy

write to 0xffff88814291175f of 1 bytes by task 28519 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
 init_rescuer+0x10e/0x190 kernel/workqueue.c:4274
 alloc_workqueue+0x853/0xad0 kernel/workqueue.c:4349
 ieee802154_register_hw+0x74/0x390 net/mac802154/main.c:147
 hwsim_add_one+0x422/0xb10 drivers/net/ieee802154/mac802154_hwsim.c:796
 hwsim_new_radio_nl+0x2a/0x30 drivers/net/ieee802154/mac802154_hwsim.c:179
 genl_family_rcv_msg_doit net/netlink/genetlink.c:731 [inline]
 genl_family_rcv_msg net/netlink/genetlink.c:775 [inline]
 genl_rcv_msg+0x7b9/0x860 net/netlink/genetlink.c:792
 netlink_rcv_skb+0x14e/0x250 net/netlink/af_netlink.c:2496
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x5fc/0x6c0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x726/0x840 net/netlink/af_netlink.c:1921
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg net/socket.c:724 [inline]
 ____sys_sendmsg+0x39a/0x510 net/socket.c:2409
 ___sys_sendmsg net/socket.c:2463 [inline]
 __sys_sendmsg+0x195/0x230 net/socket.c:2492
 __do_sys_sendmsg net/socket.c:2501 [inline]
 __se_sys_sendmsg net/socket.c:2499 [inline]
 __x64_sys_sendmsg+0x42/0x50 net/socket.c:2499
 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 0xffff88814291175f of 1 bytes by task 28569 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: 28569 Comm: phy2073 Tainted: G        W         5.16.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================