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BUG: KCSAN: data-race in __anon_vma_prepare / handle_mm_fault

write to 0xffff8881599fa658 of 8 bytes by task 17675 on cpu 0:
 __anon_vma_prepare+0x147/0x2c0 mm/rmap.c:214
 anon_vma_prepare include/linux/rmap.h:164 [inline]
 do_anonymous_page mm/memory.c:4430 [inline]
 do_pte_missing mm/memory.c:3878 [inline]
 handle_pte_fault mm/memory.c:5300 [inline]
 __handle_mm_fault mm/memory.c:5441 [inline]
 handle_mm_fault+0x1aea/0x27e0 mm/memory.c:5606
 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

read to 0xffff8881599fa658 of 8 bytes by task 17676 on cpu 1:
 anon_vma_prepare include/linux/rmap.h:161 [inline]
 do_anonymous_page mm/memory.c:4430 [inline]
 do_pte_missing mm/memory.c:3878 [inline]
 handle_pte_fault mm/memory.c:5300 [inline]
 __handle_mm_fault mm/memory.c:5441 [inline]
 handle_mm_fault+0xcc4/0x27e0 mm/memory.c:5606
 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+0x4a/0x70 arch/x86/lib/copy_user_64.S:65
 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]
 copy_semid_to_user ipc/sem.c:1199 [inline]
 ksys_semctl ipc/sem.c:1673 [inline]
 __do_sys_semctl ipc/sem.c:1707 [inline]
 __se_sys_semctl+0x1aa/0x2b0 ipc/sem.c:1705
 __x64_sys_semctl+0x55/0x70 ipc/sem.c:1705
 x64_sys_call+0x18b7/0x2d30 arch/x86/include/generated/asm/syscalls_64.h:67
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1d0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x0000000000000000 -> 0xffff888103c80068

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 17676 Comm: syz-executor.3 Not tainted 6.9.0-rc4-syzkaller-00031-g96fca68c4fbf #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
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