EXT4-fs warning (device loop4): read_mmp_block:115: Error -117 while reading MMP block 0 ================================================================== BUG: KCSAN: data-race in __lru_add_drain_all / folios_put_refs write to 0xffff888237d2ab68 of 1 bytes by task 3322 on cpu 1: folio_batch_reinit include/linux/pagevec.h:50 [inline] folios_put_refs+0x26d/0x2b0 mm/swap.c:956 folios_put include/linux/mm.h:1547 [inline] folio_batch_move_lru+0x202/0x230 mm/swap.c:175 lru_add_drain_cpu+0x7c/0x260 mm/swap.c:616 lru_add_drain mm/swap.c:698 [inline] __folio_batch_release+0x51/0xc0 mm/swap.c:1019 folio_batch_release include/linux/pagevec.h:101 [inline] shmem_undo_range+0x35b/0xa70 mm/shmem.c:1040 shmem_truncate_range mm/shmem.c:1152 [inline] shmem_evict_inode+0x14d/0x530 mm/shmem.c:1280 evict+0x2f0/0x570 fs/inode.c:796 iput_final fs/inode.c:1946 [inline] iput+0x42a/0x5b0 fs/inode.c:1972 dentry_unlink_inode+0x24f/0x260 fs/dcache.c:422 __dentry_kill+0x18b/0x4c0 fs/dcache.c:625 dput+0x5c/0xd0 fs/dcache.c:867 do_renameat2+0x748/0xa70 fs/namei.c:5226 __do_sys_rename fs/namei.c:5271 [inline] __se_sys_rename fs/namei.c:5269 [inline] __x64_sys_rename+0x58/0x70 fs/namei.c:5269 x64_sys_call+0x2b1c/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:83 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 0xffff888237d2ab68 of 1 bytes by task 12323 on cpu 0: folio_batch_count include/linux/pagevec.h:56 [inline] cpu_needs_drain mm/swap.c:741 [inline] __lru_add_drain_all+0x136/0x3f0 mm/swap.c:835 lru_add_drain_all+0x10/0x20 mm/swap.c:851 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: 0x01 -> 0x00 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 12323 Comm: syz.4.4291 Not tainted 6.12.0-syzkaller-09435-g2c22dc1ee3a1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 ==================================================================