================================================================== BUG: KCSAN: data-race in __lru_add_drain_all / folio_add_lru_vma read-write to 0xffff888237d29c88 of 1 bytes by task 16379 on cpu 1: folio_batch_add include/linux/pagevec.h:74 [inline] folio_batch_add_and_move mm/swap.c:231 [inline] folio_add_lru mm/swap.c:517 [inline] folio_add_lru_vma+0x6c/0x160 mm/swap.c:537 wp_page_copy mm/memory.c:3206 [inline] do_wp_page+0x1551/0x1f20 mm/memory.c:3525 handle_pte_fault mm/memory.c:5180 [inline] __handle_mm_fault mm/memory.c:5305 [inline] handle_mm_fault+0xb80/0x27c0 mm/memory.c:5470 do_user_addr_fault arch/x86/mm/fault.c:1355 [inline] handle_page_fault arch/x86/mm/fault.c:1498 [inline] exc_page_fault+0x401/0x6d0 arch/x86/mm/fault.c:1554 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 read to 0xffff888237d29c88 of 1 bytes by task 16378 on cpu 0: folio_batch_count include/linux/pagevec.h:53 [inline] cpu_needs_drain mm/swap.c:795 [inline] __lru_add_drain_all+0x137/0x420 mm/swap.c:889 lru_add_drain_all+0x10/0x20 mm/swap.c:905 invalidate_bdev block/bdev.c:89 [inline] bdev_mark_dead+0xe9/0x110 block/bdev.c:1057 disk_force_media_change+0xb6/0xe0 block/disk-events.c:298 loop_configure+0x70d/0xca0 drivers/block/loop.c:1066 lo_ioctl+0x682/0x12e0 blkdev_ioctl+0x375/0x460 block/ioctl.c:634 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:52 [inline] do_syscall_64+0xcd/0x1d0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b value changed: 0x06 -> 0x08 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 16378 Comm: syz-executor.1 Not tainted 6.8.0-rc7-syzkaller-00020-g5847c9777c30 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 ================================================================== loop1: detected capacity change from 0 to 512 EXT4-fs (loop1): Invalid log block size: 9