================================================================== BUG: KCSAN: data-race in exit_mm / mm_update_next_owner write to 0xffff88810cfd8ac8 of 8 bytes by task 3690 on cpu 0: exit_mm+0x98/0x170 kernel/exit.c:503 do_exit+0x51d/0x1720 kernel/exit.c:782 do_group_exit+0xa5/0x160 kernel/exit.c:925 get_signal+0xf54/0x1020 kernel/signal.c:2857 arch_do_signal_or_restart+0x87/0x2d0 arch/x86/kernel/signal.c:869 exit_to_user_mode_loop+0x78/0x130 kernel/entry/common.c:166 exit_to_user_mode_prepare kernel/entry/common.c:201 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x6a/0x90 kernel/entry/common.c:294 do_syscall_64+0x37/0x70 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x46/0xb0 read to 0xffff88810cfd8ac8 of 8 bytes by task 3685 on cpu 1: mm_update_next_owner+0x23c/0x4e0 kernel/exit.c:435 exit_mm+0xd3/0x170 kernel/exit.c:509 do_exit+0x51d/0x1720 kernel/exit.c:782 __x64_sys_exit_group+0x0/0x20 kernel/exit.c:925 __do_sys_exit_group kernel/exit.c:936 [inline] __se_sys_exit_group kernel/exit.c:934 [inline] __x64_sys_exit_group+0x1b/0x20 kernel/exit.c:934 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 value changed: 0xffff88810d585c00 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 3685 Comm: syz-executor.4 Not tainted 5.19.0-rc5-syzkaller-00105-g9f09069cde34-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 ==================================================================