loop0: detected capacity change from 0 to 256
==================================================================
BUG: KCSAN: data-race in __lru_add_drain_all / folio_add_lru_vma

read-write to 0xffff888237c2ac08 of 1 bytes by task 3596 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:3353 [inline]
 do_wp_page+0x1728/0x22b0 mm/memory.c:3677
 handle_pte_fault mm/memory.c:5397 [inline]
 __handle_mm_fault mm/memory.c:5524 [inline]
 handle_mm_fault+0xb9b/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 0xffff888237c2ac08 of 1 bytes by task 3592 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 block/bdev.c:100 [inline]
 bdev_mark_dead+0xd5/0x100 block/bdev.c:1200
 disk_force_media_change+0xb6/0xf0 block/disk-events.c:298
 __loop_clr_fd+0x270/0x3f0 drivers/block/loop.c:1193
 loop_clr_fd drivers/block/loop.c:1276 [inline]
 lo_ioctl+0xea6/0x1330 drivers/block/loop.c:1578
 blkdev_ioctl+0x35f/0x450 block/ioctl.c:676
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xd3/0x150 fs/ioctl.c:893
 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:893
 x64_sys_call+0x1581/0x2d70 arch/x86/include/generated/asm/syscalls_64.h:17
 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

value changed: 0x06 -> 0x0a

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 3592 Comm: syz.0.125 Not tainted 6.10.0-rc7-syzkaller-00012-g34afb82a3c67 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
==================================================================