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BUG: KCSAN: data-race in bpf_obj_memcpy / bpf_obj_memcpy

write to 0xffffe8ffffd59070 of 11 bytes by task 4121 on cpu 1:
 bpf_obj_memcpy+0x16a/0x190 include/linux/bpf.h:-1
 copy_map_value include/linux/bpf.h:591 [inline]
 bpf_percpu_array_update+0x1cb/0x2a0 kernel/bpf/arraymap.c:472
 bpf_map_update_value+0x260/0x570 kernel/bpf/syscall.c:275
 generic_map_update_batch+0x52d/0x680 kernel/bpf/syscall.c:2106
 bpf_map_do_batch+0x25b/0x380 kernel/bpf/syscall.c:5781
 __sys_bpf+0xa8e/0xc30 kernel/bpf/syscall.c:-1
 __do_sys_bpf kernel/bpf/syscall.c:6486 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:6483 [inline]
 __x64_sys_bpf+0x69/0x80 kernel/bpf/syscall.c:6483
 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

write to 0xffffe8ffffd59070 of 11 bytes by task 4116 on cpu 0:
 bpf_obj_memcpy+0x16a/0x190 include/linux/bpf.h:-1
 copy_map_value include/linux/bpf.h:591 [inline]
 bpf_percpu_array_update+0x1cb/0x2a0 kernel/bpf/arraymap.c:472
 bpf_map_update_value+0x260/0x570 kernel/bpf/syscall.c:275
 generic_map_update_batch+0x52d/0x680 kernel/bpf/syscall.c:2106
 bpf_map_do_batch+0x25b/0x380 kernel/bpf/syscall.c:5781
 __sys_bpf+0xa8e/0xc30 kernel/bpf/syscall.c:-1
 __do_sys_bpf kernel/bpf/syscall.c:6486 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:6483 [inline]
 __x64_sys_bpf+0x69/0x80 kernel/bpf/syscall.c:6483
 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

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 4116 Comm: syz.5.92 Not tainted syzkaller #0 PREEMPT(lazy) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
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