================================================================== BUG: KCSAN: data-race in copy_process / copy_process write to 0xffffffff89281410 of 4 bytes by task 29 on cpu 1: copy_process+0x2e53/0x32b0 kernel/fork.c:2298 _do_fork+0xf1/0x660 kernel/fork.c:2443 kernel_thread+0x85/0xb0 kernel/fork.c:2531 call_usermodehelper_exec_work+0x4f/0x1b0 kernel/umh.c:195 process_one_work+0x3cb/0x990 kernel/workqueue.c:2269 worker_thread+0x665/0xbe0 kernel/workqueue.c:2415 kthread+0x210/0x220 kernel/kthread.c:291 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293 read to 0xffffffff89281410 of 4 bytes by task 21 on cpu 0: copy_process+0xab5/0x32b0 kernel/fork.c:1980 _do_fork+0xf1/0x660 kernel/fork.c:2443 kernel_thread+0x85/0xb0 kernel/fork.c:2531 call_usermodehelper_exec_work+0x4f/0x1b0 kernel/umh.c:195 process_one_work+0x3cb/0x990 kernel/workqueue.c:2269 worker_thread+0x665/0xbe0 kernel/workqueue.c:2415 kthread+0x210/0x220 kernel/kthread.c:291 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 21 Comm: kworker/u4:1 Not tainted 5.8.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_unbound call_usermodehelper_exec_work ==================================================================