EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ================================================================== BUG: KCSAN: data-race in __lru_add_drain_all / folio_add_lru_vma read-write to 0xffff888237d2ac08 of 1 bytes by task 27219 on cpu 1: folio_batch_add include/linux/pagevec.h:77 [inline] folio_batch_add_and_move mm/swap.c:233 [inline] folio_add_lru mm/swap.c:522 [inline] folio_add_lru_vma+0x74/0x170 mm/swap.c:542 do_anonymous_page mm/memory.c:4511 [inline] do_pte_missing mm/memory.c:3901 [inline] handle_pte_fault mm/memory.c:5380 [inline] __handle_mm_fault mm/memory.c:5523 [inline] handle_mm_fault+0x2411/0x2a80 mm/memory.c:5688 faultin_page mm/gup.c:1290 [inline] __get_user_pages+0x49d/0xf10 mm/gup.c:1589 __get_user_pages_locked mm/gup.c:1857 [inline] get_user_pages_remote+0x1df/0x790 mm/gup.c:2694 get_arg_page+0x189/0x380 fs/exec.c:227 copy_string_kernel+0x119/0x280 fs/exec.c:655 kernel_execve+0x3c5/0x670 fs/exec.c:2045 call_usermodehelper_exec_async+0x19d/0x250 kernel/umh.c:110 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 read to 0xffff888237d2ac08 of 1 bytes by task 25562 on cpu 0: folio_batch_count include/linux/pagevec.h:56 [inline] cpu_needs_drain mm/swap.c:800 [inline] __lru_add_drain_all+0x12c/0x410 mm/swap.c:894 lru_add_drain_all+0x10/0x20 mm/swap.c:910 invalidate_bdev+0x47/0x70 block/bdev.c:100 ext4_put_super+0x51b/0x7e0 fs/ext4/super.c:1345 generic_shutdown_super+0xde/0x210 fs/super.c:642 kill_block_super+0x2a/0x70 fs/super.c:1676 ext4_kill_sb+0x44/0x80 fs/ext4/super.c:7301 deactivate_locked_super+0x7d/0x1c0 fs/super.c:473 deactivate_super+0x9f/0xb0 fs/super.c:506 cleanup_mnt+0x268/0x2e0 fs/namespace.c:1267 __cleanup_mnt+0x19/0x20 fs/namespace.c:1274 task_work_run+0x13a/0x1a0 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xbe/0x130 kernel/entry/common.c:218 do_syscall_64+0xd6/0x1c0 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x00 -> 0x01 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 25562 Comm: syz-executor.0 Not tainted 6.10.0-rc3-syzkaller-00099-gd20f6b3d747c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 ==================================================================