syzbot

EXT4-fs (loop1): unmounting filesystem ffffff7f-0000-0000-0000-000000000000.
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BUG: KCSAN: data-race in __lru_add_drain_all / folio_add_lru_vma

read-write to 0xffff888237d2ac08 of 1 bytes by task 5832 on cpu 1:
 folio_batch_add include/linux/pagevec.h:77 [inline]
 folio_batch_add_and_move mm/swap.c:233 [inline]
 folio_add_lru mm/swap.c:522 [inline]
 folio_add_lru_vma+0x74/0x170 mm/swap.c:542
 do_anonymous_page mm/memory.c:4505 [inline]
 do_pte_missing mm/memory.c:3895 [inline]
 handle_pte_fault mm/memory.c:5381 [inline]
 __handle_mm_fault mm/memory.c:5524 [inline]
 handle_mm_fault+0x2411/0x2a80 mm/memory.c:5689
 do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x3b9/0x650 arch/x86/mm/fault.c:1539
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623

read to 0xffff888237d2ac08 of 1 bytes by task 5605 on cpu 0:
 folio_batch_count include/linux/pagevec.h:56 [inline]
 cpu_needs_drain mm/swap.c:800 [inline]
 __lru_add_drain_all+0x12c/0x410 mm/swap.c:894
 lru_add_drain_all+0x10/0x20 mm/swap.c:910
 invalidate_bdev+0x47/0x70 block/bdev.c:100
 ext4_put_super+0x51b/0x7e0 fs/ext4/super.c:1345
 generic_shutdown_super+0xde/0x210 fs/super.c:642
 kill_block_super+0x2a/0x70 fs/super.c:1685
 ext4_kill_sb+0x44/0x80 fs/ext4/super.c:7301
 deactivate_locked_super+0x7d/0x1c0 fs/super.c:473
 deactivate_super+0x9f/0xb0 fs/super.c:506
 cleanup_mnt+0x268/0x2e0 fs/namespace.c:1267
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1274
 task_work_run+0x13a/0x1a0 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0xbe/0x130 kernel/entry/common.c:218
 do_syscall_64+0xd6/0x1c0 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x0f -> 0x10

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 5605 Comm: syz-executor Not tainted 6.10.0-rc7-syzkaller-00012-g34afb82a3c67 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
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