loop2: detected capacity change from 0 to 512 EXT4-fs (loop2): ext4_check_descriptors: Inode bitmap for group 0 overlaps superblock EXT4-fs (loop2): group descriptors corrupted! ================================================================== BUG: KCSAN: data-race in __lru_add_drain_all / folio_add_lru_vma read-write to 0xffff888237c2ac08 of 1 bytes by task 17864 on cpu 0: folio_batch_add include/linux/pagevec.h:77 [inline] folio_batch_add_and_move mm/swap.c:246 [inline] folio_add_lru mm/swap.c:532 [inline] folio_add_lru_vma+0x74/0x170 mm/swap.c:552 wp_page_copy mm/memory.c:3331 [inline] do_wp_page+0x155a/0x1e30 mm/memory.c:3655 handle_pte_fault mm/memory.c:5311 [inline] __handle_mm_fault mm/memory.c:5436 [inline] handle_mm_fault+0xb7f/0x27e0 mm/memory.c:5601 do_user_addr_fault arch/x86/mm/fault.c:1332 [inline] handle_page_fault arch/x86/mm/fault.c:1475 [inline] exc_page_fault+0x3eb/0x690 arch/x86/mm/fault.c:1533 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 read to 0xffff888237c2ac08 of 1 bytes by task 17863 on cpu 1: folio_batch_count include/linux/pagevec.h:56 [inline] cpu_needs_drain mm/swap.c:810 [inline] __lru_add_drain_all+0x137/0x420 mm/swap.c:904 lru_add_drain_all+0x10/0x20 mm/swap.c:920 invalidate_bdev+0x54/0x80 block/bdev.c:95 __ext4_fill_super fs/ext4/super.c:5667 [inline] ext4_fill_super+0x717/0x3a00 fs/ext4/super.c:5692 get_tree_bdev+0x253/0x2e0 fs/super.c:1614 ext4_get_tree+0x1c/0x30 fs/ext4/super.c:5724 vfs_get_tree+0x56/0x1d0 fs/super.c:1779 do_new_mount+0x227/0x690 fs/namespace.c:3352 path_mount+0x49b/0xb30 fs/namespace.c:3679 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount+0x27f/0x2d0 fs/namespace.c:3875 __x64_sys_mount+0x67/0x80 fs/namespace.c:3875 x64_sys_call+0x2591/0x2d30 arch/x86/include/generated/asm/syscalls_64.h:166 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+0x77/0x7f value changed: 0x02 -> 0x05 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 17863 Comm: syz-executor.2 Tainted: G W 6.9.0-syzkaller-08995-g0450d2083be6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 ==================================================================