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BUG: KCSAN: data-race in copy_mm / percpu_counter_destroy_many

write to 0xffff888120bfcf88 of 8 bytes by task 10616 on cpu 1:
 __list_del include/linux/list.h:241 [inline]
 __list_del_entry include/linux/list.h:264 [inline]
 list_del include/linux/list.h:275 [inline]
 percpu_counter_destroy_many+0xbd/0x320 lib/percpu_counter.c:244
 __mmdrop+0x1c9/0x340 kernel/fork.c:741
 mmdrop include/linux/sched/mm.h:55 [inline]
 mmdrop_sched include/linux/sched/mm.h:83 [inline]
 mmdrop_lazy_tlb_sched include/linux/sched/mm.h:110 [inline]
 finish_task_switch+0x296/0x340 kernel/sched/core.c:5465
 context_switch kernel/sched/core.c:5586 [inline]
 __schedule+0x7a9/0xd40 kernel/sched/core.c:7382
 preempt_schedule_irq+0x2c/0x50 kernel/sched/core.c:7662
 irqentry_exit_cond_resched kernel/entry/common.c:145 [inline]
 irqentry_exit_to_kernel_mode_preempt+0x63/0x80 include/linux/irq-entry-common.h:453
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:543 [inline]
 irqentry_exit+0x7d/0x610 kernel/entry/common.c:154
 sysvec_apic_timer_interrupt+0x44/0x80 arch/x86/kernel/apic/apic.c:1062
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
 __sanitizer_cov_trace_pc+0x5b/0x80 kernel/kcov.c:216
 arg_track_log kernel/bpf/liveness.c:1318 [inline]
 compute_subprog_args kernel/bpf/liveness.c:2029 [inline]
 analyze_subprog+0x2c31/0x7190 kernel/bpf/liveness.c:2275
 bpf_compute_subprog_arg_access+0x1bd/0xca0 kernel/bpf/liveness.c:2437
 bpf_compute_live_registers+0x962/0xf00 kernel/bpf/liveness.c:2705
 bpf_check+0x1e9a/0x20f0 kernel/bpf/verifier.c:23996
 bpf_prog_load+0xf38/0x10a0 kernel/bpf/syscall.c:3176
 __sys_bpf+0xbce/0xc50 kernel/bpf/syscall.c:6464
 __do_sys_bpf kernel/bpf/syscall.c:6586 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:6583 [inline]
 __x64_sys_bpf+0x69/0x80 kernel/bpf/syscall.c:6583
 x64_sys_call+0xf26/0x2550 arch/x86/include/generated/asm/syscalls_64.h:322
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff888120bfca40 of 1664 bytes by task 10644 on cpu 0:
 dup_mm kernel/fork.c:1535 [inline]
 copy_mm+0xd1/0x340 kernel/fork.c:1593
 copy_process+0x10e9/0x23f0 kernel/fork.c:2319
 kernel_clone+0x1c0/0x5f0 kernel/fork.c:2783
 __do_sys_clone kernel/fork.c:2925 [inline]
 __se_sys_clone kernel/fork.c:2909 [inline]
 __x64_sys_clone+0x143/0x180 kernel/fork.c:2909
 x64_sys_call+0x2479/0x2550 arch/x86/include/generated/asm/syscalls_64.h:57
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 10644 Comm: dhcpcd-run-hook Not tainted syzkaller #0 PREEMPT(lazy) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
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