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BUG: KCSAN: data-race in __anon_vma_prepare / lock_vma_under_rcu

write to 0xffff888104486508 of 8 bytes by task 22342 on cpu 1:
 __anon_vma_prepare+0x147/0x2c0 mm/rmap.c:214
 anon_vma_prepare include/linux/rmap.h:164 [inline]
 do_anonymous_page mm/memory.c:4289 [inline]
 do_pte_missing mm/memory.c:3743 [inline]
 handle_pte_fault mm/memory.c:5164 [inline]
 __handle_mm_fault mm/memory.c:5305 [inline]
 handle_mm_fault+0x222f/0x27f0 mm/memory.c:5470
 do_user_addr_fault arch/x86/mm/fault.c:1413 [inline]
 handle_page_fault arch/x86/mm/fault.c:1505 [inline]
 exc_page_fault+0x2f5/0x6d0 arch/x86/mm/fault.c:1563
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
 rep_movs_alternative+0x33/0x70 arch/x86/lib/copy_user_64.S:57
 copy_user_generic arch/x86/include/asm/uaccess_64.h:110 [inline]
 raw_copy_to_user arch/x86/include/asm/uaccess_64.h:131 [inline]
 _copy_to_user+0x77/0xa0 lib/usercopy.c:41
 copy_to_user include/linux/uaccess.h:191 [inline]
 put_timespec64+0x64/0xb0 kernel/time/time.c:910
 __do_sys_clock_gettime kernel/time/posix-timers.c:1144 [inline]
 __se_sys_clock_gettime kernel/time/posix-timers.c:1132 [inline]
 __x64_sys_clock_gettime+0x138/0x180 kernel/time/posix-timers.c:1132
 do_syscall_64+0xd3/0x1d0
 entry_SYSCALL_64_after_hwframe+0x6d/0x75

read to 0xffff888104486508 of 8 bytes by task 22341 on cpu 0:
 lock_vma_under_rcu+0x161/0x2a0 mm/memory.c:5635
 do_user_addr_fault arch/x86/mm/fault.c:1354 [inline]
 handle_page_fault arch/x86/mm/fault.c:1505 [inline]
 exc_page_fault+0x161/0x6d0 arch/x86/mm/fault.c:1563
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623

value changed: 0x0000000000000000 -> 0xffff888103ffb618

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 22341 Comm: syz-executor.1 Not tainted 6.8.0-syzkaller-08073-g480e035fc4c7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
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