Scheduler tracepoints stat_sleep, stat_iowait, stat_blocked and stat_runtime require the kernel parameter schedstats=enable or kernel.sched_schedstats=1
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BUG: KCSAN: data-race in __set_task_comm / strlen

write to 0xffff88810cc8a878 of 10 bytes by task 20353 on cpu 0:
 __set_task_comm+0x4d/0x140 fs/exec.c:1088
 __do_sys_prctl kernel/sys.c:2592 [inline]
 __se_sys_prctl+0xb2f/0x12e0 kernel/sys.c:2518
 __x64_sys_prctl+0x67/0x80 kernel/sys.c:2518
 x64_sys_call+0x20cf/0x3000 arch/x86/include/generated/asm/syscalls_64.h:158
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd2/0x200 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff88810cc8a881 of 1 bytes by task 20314 on cpu 1:
 strlen+0x19/0x40 lib/string.c:420
 __fortify_strlen include/linux/fortify-string.h:268 [inline]
 trace_event_get_offsets_sched_stat_runtime include/trace/events/sched.h:553 [inline]
 do_perf_trace_sched_stat_runtime include/trace/events/sched.h:553 [inline]
 perf_trace_sched_stat_runtime+0x3c/0x150 include/trace/events/sched.h:553
 __do_trace_sched_stat_runtime include/trace/events/sched.h:576 [inline]
 trace_sched_stat_runtime include/trace/events/sched.h:576 [inline]
 update_se+0x129/0x140 kernel/sched/fair.c:1175
 update_curr+0x2c/0x1b0 kernel/sched/fair.c:1223
 enqueue_entity kernel/sched/fair.c:5250 [inline]
 enqueue_task_fair+0x146/0x980 kernel/sched/fair.c:6966
 enqueue_task kernel/sched/core.c:2092 [inline]
 activate_task+0x59/0xb0 kernel/sched/core.c:2134
 ttwu_do_activate+0x69/0x210 kernel/sched/core.c:3706
 ttwu_queue kernel/sched/core.c:3969 [inline]
 try_to_wake_up+0x37f/0x630 kernel/sched/core.c:4293
 autoremove_wake_function+0x10/0x50 kernel/sched/wait.c:403
 __wake_up_common kernel/sched/wait.c:108 [inline]
 __wake_up_common_lock kernel/sched/wait.c:125 [inline]
 __wake_up_sync_key+0x52/0x80 kernel/sched/wait.c:192
 __unix_dgram_recvmsg+0x3a7/0x810 net/unix/af_unix.c:2626
 unix_dgram_recvmsg+0x81/0x90 net/unix/af_unix.c:2700
 sock_recvmsg_nosec+0x107/0x130 net/socket.c:1078
 ____sys_recvmsg+0x26f/0x280 net/socket.c:2848
 ___sys_recvmsg+0x11f/0x370 net/socket.c:2892
 do_recvmmsg+0x1ef/0x540 net/socket.c:2987
 __sys_recvmmsg net/socket.c:3061 [inline]
 __do_sys_recvmmsg net/socket.c:3084 [inline]
 __se_sys_recvmmsg net/socket.c:3077 [inline]
 __x64_sys_recvmmsg+0xe5/0x170 net/socket.c:3077
 x64_sys_call+0x27aa/0x3000 arch/x86/include/generated/asm/syscalls_64.h:300
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd2/0x200 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x74 -> 0x39

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 20314 Comm: syz.3.5674 Tainted: G        W           syzkaller #0 PREEMPT(voluntary) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
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