loop5: detected capacity change from 0 to 1024 ================================================================== BUG: KCSAN: data-race in __lru_add_drain_all / folio_add_lru read-write to 0xffff888237d2ac68 of 1 bytes by task 32078 on cpu 1: folio_batch_add include/linux/pagevec.h:77 [inline] __folio_batch_add_and_move mm/swap.c:225 [inline] folio_add_lru+0xa3/0x1f0 mm/swap.c:513 folio_add_lru_vma+0x48/0x60 mm/swap.c:532 do_anonymous_page mm/memory.c:4831 [inline] do_pte_missing mm/memory.c:3963 [inline] handle_pte_fault mm/memory.c:5766 [inline] __handle_mm_fault mm/memory.c:5909 [inline] handle_mm_fault+0x24bf/0x2aa0 mm/memory.c:6077 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 0xffff888237d2ac68 of 1 bytes by task 32076 on cpu 0: folio_batch_count include/linux/pagevec.h:56 [inline] cpu_needs_drain mm/swap.c:772 [inline] __lru_add_drain_all+0x136/0x3f0 mm/swap.c:866 lru_add_drain_all+0x10/0x20 mm/swap.c:882 invalidate_bdev+0x47/0x70 block/bdev.c:101 __ext4_fill_super fs/ext4/super.c:5708 [inline] ext4_fill_super+0x6f3/0x3a10 fs/ext4/super.c:5733 get_tree_bdev_flags+0x29f/0x310 fs/super.c:1636 get_tree_bdev+0x1f/0x30 fs/super.c:1659 ext4_get_tree+0x1c/0x30 fs/ext4/super.c:5765 vfs_get_tree+0x56/0x1e0 fs/super.c:1814 do_new_mount+0x227/0x690 fs/namespace.c:3507 path_mount+0x49b/0xb30 fs/namespace.c:3834 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4057 [inline] __se_sys_mount+0x27c/0x2d0 fs/namespace.c:4034 __x64_sys_mount+0x67/0x80 fs/namespace.c:4034 x64_sys_call+0x2c84/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:166 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: 0x09 -> 0x0a Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 32076 Comm: syz.5.18636 Not tainted 6.12.0-syzkaller-00971-g158f238aa69d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 ==================================================================