EXT4-fs (loop3): unable to read superblock ================================================================== BUG: KCSAN: data-race in __lru_add_drain_all / folio_batch_move_lru write to 0xffff888237d29988 of 1 bytes by task 3659 on cpu 1: folio_batch_reinit include/linux/pagevec.h:48 [inline] folio_batch_move_lru+0x2bf/0x2f0 mm/swap.c:225 lru_add_drain_cpu+0x77/0x270 mm/swap.c:652 lru_add_drain+0x34/0x80 mm/swap.c:752 free_pages_and_swap_cache+0x1a/0x80 mm/swap_state.c:313 tlb_batch_pages_flush mm/mmu_gather.c:98 [inline] tlb_flush_mmu_free mm/mmu_gather.c:293 [inline] tlb_flush_mmu+0x282/0x300 mm/mmu_gather.c:300 zap_pte_range mm/memory.c:1543 [inline] zap_pmd_range mm/memory.c:1582 [inline] zap_pud_range mm/memory.c:1611 [inline] zap_p4d_range mm/memory.c:1632 [inline] unmap_page_range+0x19a2/0x1d10 mm/memory.c:1653 unmap_single_vma+0x142/0x1d0 mm/memory.c:1699 unmap_vmas+0x18d/0x280 mm/memory.c:1743 exit_mmap+0x167/0x640 mm/mmap.c:3308 __mmput+0x28/0x1c0 kernel/fork.c:1349 mmput+0x4c/0x60 kernel/fork.c:1371 exit_mm+0xe3/0x180 kernel/exit.c:567 do_exit+0x585/0x16d0 kernel/exit.c:858 do_group_exit+0x101/0x150 kernel/exit.c:1021 get_signal+0xf4e/0x10a0 kernel/signal.c:2904 arch_do_signal_or_restart+0x95/0x4b0 arch/x86/kernel/signal.c:309 exit_to_user_mode_loop+0x6f/0xe0 kernel/entry/common.c:168 exit_to_user_mode_prepare+0x6c/0xb0 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x26/0x140 kernel/entry/common.c:296 do_syscall_64+0x50/0x110 arch/x86/entry/common.c:88 entry_SYSCALL_64_after_hwframe+0x63/0x6b read to 0xffff888237d29988 of 1 bytes by task 3660 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+0x54/0x70 block/bdev.c:86 __ext4_fill_super fs/ext4/super.c:5687 [inline] ext4_fill_super+0x1789/0x39a0 fs/ext4/super.c:5712 get_tree_bdev+0x272/0x300 fs/super.c:1598 ext4_get_tree+0x1c/0x20 fs/ext4/super.c:5744 vfs_get_tree+0x51/0x1b0 fs/super.c:1771 do_new_mount+0x203/0x660 fs/namespace.c:3337 path_mount+0x496/0xb30 fs/namespace.c:3664 do_mount fs/namespace.c:3677 [inline] __do_sys_mount fs/namespace.c:3886 [inline] __se_sys_mount+0x27f/0x2d0 fs/namespace.c:3863 __x64_sys_mount+0x67/0x80 fs/namespace.c:3863 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b value changed: 0x01 -> 0x00 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 3660 Comm: syz-executor.3 Not tainted 6.6.0-syzkaller-15494-g6bc986ab839c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 ==================================================================