================================================================== BUG: KCSAN: data-race in __lru_add_drain_all / deactivate_file_folio read-write to 0xffff888237d279e8 of 1 bytes by task 1861 on cpu 1: pagevec_add include/linux/pagevec.h:75 [inline] pagevec_add_and_need_flush mm/swap.c:234 [inline] deactivate_file_folio+0x82/0x1a0 mm/swap.c:654 invalidate_mapping_pagevec+0x490/0x5d0 mm/truncate.c:535 invalidate_mapping_pages+0x23/0x30 mm/truncate.c:567 invalidate_bdev+0x67/0x80 block/bdev.c:88 ext4_put_super+0x510/0x810 fs/ext4/super.c:1279 generic_shutdown_super+0xd5/0x240 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:1186 __cleanup_mnt+0x15/0x20 fs/namespace.c:1193 task_work_run+0x8e/0x110 kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x124/0x130 kernel/entry/common.c:169 exit_to_user_mode_prepare kernel/entry/common.c:201 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x6a/0x90 kernel/entry/common.c:294 do_syscall_64+0x37/0x70 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x46/0xb0 read to 0xffff888237d279e8 of 1 bytes by task 1825 on cpu 0: pagevec_count include/linux/pagevec.h:62 [inline] __lru_add_drain_all+0x196/0x3e0 mm/swap.c:828 lru_add_drain_all+0xc/0x10 mm/swap.c:849 invalidate_bdev+0x56/0x80 block/bdev.c:87 ext4_put_super+0x510/0x810 fs/ext4/super.c:1279 generic_shutdown_super+0xd5/0x240 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:1186 __cleanup_mnt+0x15/0x20 fs/namespace.c:1193 task_work_run+0x8e/0x110 kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x124/0x130 kernel/entry/common.c:169 exit_to_user_mode_prepare kernel/entry/common.c:201 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x6a/0x90 kernel/entry/common.c:294 do_syscall_64+0x37/0x70 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x46/0xb0 value changed: 0x00 -> 0x01 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 1825 Comm: syz-executor.2 Not tainted 5.19.0-rc6-syzkaller-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 ==================================================================