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BUG: KCSAN: data-race in do_sync_mmap_readahead / do_sync_mmap_readahead

write to 0xffff888103c6c678 of 8 bytes by task 3241 on cpu 0:
 do_sync_mmap_readahead+0x3d2/0x450 mm/filemap.c:3147
 filemap_fault+0x43d/0xc70 mm/filemap.c:3289
 __do_fault+0xb6/0x200 mm/memory.c:4529
 do_read_fault mm/memory.c:4892 [inline]
 do_fault mm/memory.c:5022 [inline]
 do_pte_missing mm/memory.c:3878 [inline]
 handle_pte_fault mm/memory.c:5298 [inline]
 __handle_mm_fault mm/memory.c:5439 [inline]
 handle_mm_fault+0xdbf/0x27e0 mm/memory.c:5604
 do_user_addr_fault arch/x86/mm/fault.c:1362 [inline]
 handle_page_fault arch/x86/mm/fault.c:1505 [inline]
 exc_page_fault+0x3eb/0x6d0 arch/x86/mm/fault.c:1563
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623

write to 0xffff888103c6c678 of 8 bytes by task 3114 on cpu 1:
 do_sync_mmap_readahead+0x3d2/0x450 mm/filemap.c:3147
 filemap_fault+0x43d/0xc70 mm/filemap.c:3289
 __do_fault+0xb6/0x200 mm/memory.c:4529
 do_read_fault mm/memory.c:4892 [inline]
 do_fault mm/memory.c:5022 [inline]
 do_pte_missing mm/memory.c:3878 [inline]
 handle_pte_fault mm/memory.c:5298 [inline]
 __handle_mm_fault mm/memory.c:5439 [inline]
 handle_mm_fault+0xdbf/0x27e0 mm/memory.c:5604
 do_user_addr_fault arch/x86/mm/fault.c:1362 [inline]
 handle_page_fault arch/x86/mm/fault.c:1505 [inline]
 exc_page_fault+0x3eb/0x6d0 arch/x86/mm/fault.c:1563
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623

value changed: 0x0000000000000d53 -> 0x000000000000067b

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 3114 Comm: syz-fuzzer Not tainted 6.8.0-syzkaller-13182-g484193fecd2b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
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