KCSAN: data-race in bprm_execve / copy

Kernel	Title	Rank 🛈	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in bprm_execve / copy_process mm fs	6	1	1922d	1922d	0/29	auto-closed as invalid on 2020/10/29 15:12
upstream	KCSAN: data-race in bprm_execve / copy_process (2) mm fs	6	2	1814d	1842d	0/29	auto-closed as invalid on 2021/02/14 15:47
upstream	KCSAN: data-race in bprm_execve / copy_process (3) mm fs	6	1	1596d	1596d	0/29	auto-closed as invalid on 2021/09/20 14:52

================================================================== BUG: KCSAN: data-race in bprm_execve / copy_process write to 0xffff8881395ddf90 of 4 bytes by task 4166 on cpu 0: bprm_execve+0x4c6/0x530 fs/exec.c:1858 do_execveat_common+0x63b/0x700 fs/exec.c:1924 do_execve fs/exec.c:1992 [inline] __do_sys_execve fs/exec.c:2068 [inline] __se_sys_execve fs/exec.c:2063 [inline] __x64_sys_execve+0x56/0x70 fs/exec.c:2063 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff8881395ddf90 of 4 bytes by task 4162 on cpu 1: copy_fs kernel/fork.c:1521 [inline] copy_process+0xead/0x2fa0 kernel/fork.c:2185 kernel_clone+0x15c/0x680 kernel/fork.c:2584 __do_sys_clone kernel/fork.c:2701 [inline] __se_sys_clone kernel/fork.c:2685 [inline] __x64_sys_clone+0xc6/0xf0 kernel/fork.c:2685 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x00000001 -> 0x00000000 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 4162 Comm: syz-executor.5 Not tainted 5.15.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================