EXT4-fs (loop0): unmounting filesystem 00000000-0000-0000-0000-000000000000. ================================================================== BUG: KCSAN: data-race in mlock_new_folio / need_mlock_drain read-write to 0xffff888237d2b3b0 of 1 bytes by task 4116 on cpu 1: folio_batch_add include/linux/pagevec.h:77 [inline] mlock_new_folio+0x114/0x200 mm/mlock.c:280 folio_add_lru_vma+0x5d/0x60 mm/swap.c:544 do_anonymous_page mm/memory.c:4604 [inline] do_pte_missing mm/memory.c:3945 [inline] handle_pte_fault mm/memory.c:5522 [inline] __handle_mm_fault mm/memory.c:5665 [inline] handle_mm_fault+0x22fd/0x28c0 mm/memory.c:5830 faultin_page mm/gup.c:1194 [inline] __get_user_pages+0x499/0x10d0 mm/gup.c:1493 populate_vma_page_range mm/gup.c:1932 [inline] __mm_populate+0x25b/0x3b0 mm/gup.c:2035 mm_populate include/linux/mm.h:3422 [inline] __do_sys_mremap mm/mremap.c:1200 [inline] __se_sys_mremap+0x960/0xf20 mm/mremap.c:993 __x64_sys_mremap+0x67/0x80 mm/mremap.c:993 x64_sys_call+0x29c8/0x2e00 arch/x86/include/generated/asm/syscalls_64.h:26 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 0xffff888237d2b3b0 of 1 bytes by task 3086 on cpu 0: folio_batch_count include/linux/pagevec.h:56 [inline] need_mlock_drain+0x30/0x50 mm/mlock.c:235 cpu_needs_drain mm/swap.c:824 [inline] __lru_add_drain_all+0x235/0x410 mm/swap.c:912 lru_add_drain_all+0x10/0x20 mm/swap.c:928 invalidate_bdev+0x47/0x70 block/bdev.c:100 ext4_put_super+0x571/0x840 fs/ext4/super.c:1348 generic_shutdown_super+0xde/0x210 fs/super.c:642 kill_block_super+0x2a/0x70 fs/super.c:1685 ext4_kill_sb+0x44/0x80 fs/ext4/super.c:7289 deactivate_locked_super+0x7d/0x1c0 fs/super.c:473 deactivate_super+0x9f/0xb0 fs/super.c:506 cleanup_mnt+0x268/0x2e0 fs/namespace.c:1373 __cleanup_mnt+0x19/0x20 fs/namespace.c:1380 task_work_run+0x13a/0x1a0 kernel/task_work.c:222 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: 0x18 -> 0x1f Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 3086 Comm: syz-executor Not tainted 6.10.0-syzkaller-12261-gd1e9a63dcd72 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 ==================================================================