================================================================== BUG: KCSAN: data-race in __percpu_counter_init_many / copy_mm write to 0xffff88810962f708 of 8 bytes by task 7305 on cpu 0: __list_add include/linux/list.h:153 [inline] list_add include/linux/list.h:169 [inline] __percpu_counter_init_many+0x292/0x310 lib/percpu_counter.c:220 mm_init+0x6ac/0x850 kernel/fork.c:1076 dup_mm kernel/fork.c:1473 [inline] copy_mm+0x101/0x370 kernel/fork.c:1529 copy_process+0xcf1/0x1fe0 kernel/fork.c:2169 kernel_clone+0x16c/0x5b0 kernel/fork.c:2599 __do_sys_clone kernel/fork.c:2742 [inline] __se_sys_clone kernel/fork.c:2726 [inline] __x64_sys_clone+0xe6/0x120 kernel/fork.c:2726 x64_sys_call+0x2c59/0x2fb0 arch/x86/include/generated/asm/syscalls_64.h:57 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd2/0x200 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff88810962f300 of 1408 bytes by task 8184 on cpu 1: dup_mm kernel/fork.c:1471 [inline] copy_mm+0xe2/0x370 kernel/fork.c:1529 copy_process+0xcf1/0x1fe0 kernel/fork.c:2169 kernel_clone+0x16c/0x5b0 kernel/fork.c:2599 __do_sys_clone kernel/fork.c:2742 [inline] __se_sys_clone kernel/fork.c:2726 [inline] __x64_sys_clone+0xe6/0x120 kernel/fork.c:2726 x64_sys_call+0x2c59/0x2fb0 arch/x86/include/generated/asm/syscalls_64.h:57 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd2/0x200 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 8184 Comm: syz.5.1132 Not tainted 6.16.0-rc2-syzkaller-00269-g11313e2f7812 #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 ==================================================================