================================================================== BUG: KCSAN: data-race in kcompactd / mm_update_next_owner read-write to 0xffff888101823024 of 4 bytes by task 1650 on cpu 0: freezer_do_not_count include/linux/freezer.h:109 [inline] freezable_schedule_timeout include/linux/freezer.h:191 [inline] kcompactd+0x366/0xde0 mm/compaction.c:2814 kthread+0x1fa/0x220 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 read to 0xffff888101823024 of 4 bytes by task 3586 on cpu 1: mm_update_next_owner+0x1e9/0x4c0 kernel/exit.c:387 exit_mm+0x2b5/0x320 kernel/exit.c:482 do_exit+0x3c2/0x15a0 kernel/exit.c:793 do_group_exit+0x16f/0x170 kernel/exit.c:903 __do_sys_exit_group+0xb/0x10 kernel/exit.c:914 __se_sys_exit_group+0x5/0x10 kernel/exit.c:912 __x64_sys_exit_group+0x16/0x20 kernel/exit.c:912 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 3586 Comm: syz-executor.5 Not tainted 5.9.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================