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BUG: KCSAN: data-race in mlock_new_folio / need_mlock_drain

read-write to 0xffff888237c29f28 of 1 bytes by task 14119 on cpu 0:
 folio_batch_add include/linux/pagevec.h:74 [inline]
 mlock_new_folio+0x109/0x1f0 mm/mlock.c:281
 folio_add_lru_vma+0x14d/0x160 mm/swap.c:535
 do_anonymous_page mm/memory.c:4213 [inline]
 do_pte_missing mm/memory.c:3728 [inline]
 handle_pte_fault mm/memory.c:5038 [inline]
 __handle_mm_fault mm/memory.c:5179 [inline]
 handle_mm_fault+0x1d7a/0x2dd0 mm/memory.c:5344
 faultin_page mm/gup.c:956 [inline]
 __get_user_pages+0x402/0xe40 mm/gup.c:1239
 populate_vma_page_range mm/gup.c:1677 [inline]
 __mm_populate+0x216/0x330 mm/gup.c:1786
 mm_populate include/linux/mm.h:3379 [inline]
 __do_sys_mlockall mm/mlock.c:778 [inline]
 __se_sys_mlockall+0x28d/0x320 mm/mlock.c:754
 __x64_sys_mlockall+0x1f/0x30 mm/mlock.c:754
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

read to 0xffff888237c29f28 of 1 bytes by task 2780 on cpu 1:
 folio_batch_count include/linux/pagevec.h:53 [inline]
 need_mlock_drain+0x30/0x50 mm/mlock.c:236
 cpu_needs_drain mm/swap.c:801 [inline]
 __lru_add_drain_all+0x240/0x420 mm/swap.c:889
 lru_add_drain_all+0x10/0x20 mm/swap.c:905
 invalidate_bdev+0x54/0x70 block/bdev.c:86
 bdev_disk_changed+0x118/0xc70 block/partitions/core.c:664
 blkdev_get_whole+0x227/0x240 block/bdev.c:653
 blkdev_get_by_dev+0x236/0x390 block/bdev.c:795
 bdev_open_by_dev+0x56/0xd0 block/bdev.c:840
 disk_scan_partitions+0x13b/0x1a0 block/genhd.c:369
 blkdev_common_ioctl+0xd59/0x1680 block/ioctl.c:558
 blkdev_ioctl+0x318/0x460 block/ioctl.c:627
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl+0xcf/0x140 fs/ioctl.c:857
 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:857
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

value changed: 0x0d -> 0x03

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 2780 Comm: udevd Not tainted 6.6.0-syzkaller-16201-gb57b17e88bf5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
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