netlink: 12 bytes leftover after parsing attributes in process `syz.4.2026'.
==================================================================
BUG: KCSAN: data-race in __set_task_comm / strlen

write to 0xffff888101cebb98 of 13 bytes by task 11144 on cpu 1:
 __set_task_comm+0x78/0x180 fs/exec.c:1102
 io_wq_worker+0x143/0x9b0 io_uring/io-wq.c:702
 ret_from_fork+0x146/0x330 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

read to 0xffff888101cebb9e of 1 bytes by task 11140 on cpu 0:
 strlen+0x19/0x40 lib/string.c:402
 __fortify_strlen include/linux/fortify-string.h:218 [inline]
 trace_event_get_offsets_sched_stat_runtime include/trace/events/sched.h:560 [inline]
 do_trace_event_raw_event_sched_stat_runtime include/trace/events/sched.h:553 [inline]
 trace_event_raw_event_sched_stat_runtime+0x5a/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+0x14f/0x450 kernel/sched/fair.c:1425
 update_curr+0x1e/0x210 kernel/sched/fair.c:2048
 update_curr_eevdf kernel/sched/fair.c:7980 [inline]
 enqueue_task_fair+0x77/0x850 kernel/sched/fair.c:8010
 enqueue_task kernel/sched/core.c:2194 [inline]
 activate_task kernel/sched/core.c:2234 [inline]
 wake_up_new_task+0x24b/0x3c0 kernel/sched/core.c:4979
 io_init_new_worker+0x13c/0x150 io_uring/io-wq.c:806
 create_io_worker+0x130/0x360 io_uring/io-wq.c:927
 io_wq_create_worker io_uring/io-wq.c:345 [inline]
 io_wq_enqueue+0x461/0x540 io_uring/io-wq.c:1067
 io_queue_iowq+0x252/0x330 io_uring/io_uring.c:435
 io_req_task_submit+0x69/0xa0 io_uring/io_uring.c:1047
 tctx_task_work_run+0x3a9/0x500 io_uring/tw.c:96
 tctx_task_work+0x3f/0x60 io_uring/tw.c:133
 task_work_run+0x130/0x1a0 kernel/task_work.c:233
 get_signal+0xdc1/0xf10 kernel/signal.c:2823
 arch_do_signal_or_restart+0x96/0x480 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
 exit_to_user_mode_loop+0x15d/0x8c0 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:343 [inline]
 do_syscall_64+0x212/0x360 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x32 -> 0x6b

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 11140 Comm: syz.4.2026 Not tainted syzkaller #0 PREEMPT(lazy) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
==================================================================