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BUG: KCSAN: data-race in __anon_vma_prepare / lock_vma_under_rcu

read to 0xffff88811709c9a0 of 8 bytes by task 28730 on cpu 1:
 lock_vma_under_rcu+0x16a/0x2a0 mm/memory.c:5452
 do_user_addr_fault arch/x86/mm/fault.c:1356 [inline]
 handle_page_fault arch/x86/mm/fault.c:1505 [inline]
 exc_page_fault+0x164/0x6c0 arch/x86/mm/fault.c:1561
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570

write to 0xffff88811709c9a0 of 8 bytes by task 28731 on cpu 0:
 __anon_vma_prepare+0x147/0x2b0 mm/rmap.c:214
 anon_vma_prepare include/linux/rmap.h:159 [inline]
 do_anonymous_page mm/memory.c:4111 [inline]
 do_pte_missing mm/memory.c:3670 [inline]
 handle_pte_fault mm/memory.c:4981 [inline]
 __handle_mm_fault mm/memory.c:5122 [inline]
 handle_mm_fault+0x20a4/0x2cc0 mm/memory.c:5287
 do_user_addr_fault arch/x86/mm/fault.c:1413 [inline]
 handle_page_fault arch/x86/mm/fault.c:1505 [inline]
 exc_page_fault+0x2f7/0x6c0 arch/x86/mm/fault.c:1561
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
 rep_movs_alternative+0x33/0x70 arch/x86/lib/copy_user_64.S:57
 copy_user_generic arch/x86/include/asm/uaccess_64.h:112 [inline]
 raw_copy_to_user arch/x86/include/asm/uaccess_64.h:133 [inline]
 _copy_to_user+0x77/0x90 lib/usercopy.c:41
 copy_to_user include/linux/uaccess.h:191 [inline]
 put_timespec64+0x64/0xb0 kernel/time/time.c:910
 __do_sys_sched_rr_get_interval kernel/sched/core.c:9138 [inline]
 __se_sys_sched_rr_get_interval kernel/sched/core.c:9131 [inline]
 __x64_sys_sched_rr_get_interval+0x48/0x70 kernel/sched/core.c:9131
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 28731 Comm: syz-executor.3 Not tainted 6.6.0-rc7-syzkaller-00041-g611da07b89fd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
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