================================================================== BUG: KCSAN: data-race in exit_signals / mm_update_next_owner write to 0xffff88802334602c of 4 bytes by task 4845 on cpu 1: exit_signals+0x112/0x540 kernel/signal.c:2865 do_exit+0x194/0x1670 kernel/exit.c:781 do_group_exit+0x17d/0x180 kernel/exit.c:922 __do_sys_exit_group+0xb/0x10 kernel/exit.c:933 __se_sys_exit_group+0x5/0x10 kernel/exit.c:931 __x64_sys_exit_group+0x16/0x20 kernel/exit.c:931 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff88802334602c of 4 bytes by task 4848 on cpu 0: mm_update_next_owner+0x1d9/0x4e0 kernel/exit.c:388 exit_mm+0x33c/0x430 kernel/exit.c:500 do_exit+0x3ff/0x1670 kernel/exit.c:812 do_group_exit+0x17d/0x180 kernel/exit.c:922 __do_sys_exit_group+0xb/0x10 kernel/exit.c:933 __se_sys_exit_group+0x5/0x10 kernel/exit.c:931 __x64_sys_exit_group+0x16/0x20 kernel/exit.c:931 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 4848 Comm: syz-executor.1 Not tainted 5.12.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================