================================================================== BUG: KCSAN: data-race in __lru_add_drain_all / pagevec_lru_move_fn write to 0xffff888237c27a18 of 1 bytes by task 1819 on cpu 0: pagevec_reinit include/linux/pagevec.h:57 [inline] pagevec_lru_move_fn+0x317/0x340 mm/swap.c:216 lru_add_drain_cpu+0x155/0x260 mm/swap.c:628 lru_add_drain mm/swap.c:717 [inline] __pagevec_release+0x4b/0xc0 mm/swap.c:997 pagevec_release include/linux/pagevec.h:82 [inline] folio_batch_release include/linux/pagevec.h:146 [inline] __invalidate_mapping_pages+0x21f/0x2b0 mm/truncate.c:541 invalidate_mapping_pages+0x23/0x30 mm/truncate.c:565 invalidate_bdev+0x67/0x80 block/bdev.c:88 ext4_put_super+0x408/0x610 fs/ext4/super.c:1271 generic_shutdown_super+0xdf/0x250 fs/super.c:462 kill_block_super+0x4a/0x90 fs/super.c:1394 deactivate_locked_super+0x6a/0xb0 fs/super.c:332 deactivate_super+0x85/0x90 fs/super.c:363 cleanup_mnt+0x267/0x2d0 fs/namespace.c:1143 __cleanup_mnt+0x15/0x20 fs/namespace.c:1150 task_work_run+0x8e/0x110 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x160/0x190 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:300 do_syscall_64+0x50/0xd0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888237c27a18 of 1 bytes by task 1830 on cpu 1: pagevec_count include/linux/pagevec.h:62 [inline] __lru_add_drain_all+0x1a3/0x3e0 mm/swap.c:837 lru_add_drain_all+0xc/0x10 mm/swap.c:857 invalidate_bdev+0x56/0x80 block/bdev.c:87 ext4_put_super+0x408/0x610 fs/ext4/super.c:1271 generic_shutdown_super+0xdf/0x250 fs/super.c:462 kill_block_super+0x4a/0x90 fs/super.c:1394 deactivate_locked_super+0x6a/0xb0 fs/super.c:332 deactivate_super+0x85/0x90 fs/super.c:363 cleanup_mnt+0x267/0x2d0 fs/namespace.c:1143 __cleanup_mnt+0x15/0x20 fs/namespace.c:1150 task_work_run+0x8e/0x110 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x160/0x190 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:300 do_syscall_64+0x50/0xd0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x01 -> 0x00 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 1830 Comm: syz-executor.5 Not tainted 5.17.0-rc3-syzkaller-00247-g83e396641110-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================