EXT4-fs (loop3): unmounting filesystem 00000000-0000-0000-0000-000000000000.
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BUG: KCSAN: data-race in __lru_add_drain_all / folio_add_lru_vma

read-write to 0xffff888237c2ac08 of 1 bytes by task 4739 on cpu 0:
 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
 wp_page_copy mm/memory.c:3359 [inline]
 do_wp_page+0x1728/0x22b0 mm/memory.c:3683
 handle_pte_fault mm/memory.c:5396 [inline]
 __handle_mm_fault mm/memory.c:5523 [inline]
 handle_mm_fault+0xb9b/0x2a80 mm/memory.c:5688
 do_user_addr_fault arch/x86/mm/fault.c:1389 [inline]
 handle_page_fault arch/x86/mm/fault.c:1481 [inline]
 exc_page_fault+0x296/0x650 arch/x86/mm/fault.c:1539
 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:46
 copy_to_user include/linux/uaccess.h:191 [inline]
 get_mm_cmdline fs/proc/base.c:328 [inline]
 get_task_cmdline fs/proc/base.c:354 [inline]
 proc_pid_cmdline_read+0x422/0x670 fs/proc/base.c:370
 do_loop_readv_writev fs/read_write.c:761 [inline]
 vfs_readv+0x3f5/0x660 fs/read_write.c:934
 do_preadv fs/read_write.c:1049 [inline]
 __do_sys_preadv fs/read_write.c:1099 [inline]
 __se_sys_preadv fs/read_write.c:1094 [inline]
 __x64_sys_preadv+0x100/0x1c0 fs/read_write.c:1094
 x64_sys_call+0x1d82/0x2d70 arch/x86/include/generated/asm/syscalls_64.h:296
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff888237c2ac08 of 1 bytes by task 3123 on cpu 1:
 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:1676
 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: 0x13 -> 0x16

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 3123 Comm: syz-executor.3 Not tainted 6.10.0-rc1-syzkaller-00104-gd8ec19857b09 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
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