================================================================== BUG: KCSAN: data-race in __lru_add_drain_all / lru_cache_add_inactive_or_unevictable write to 0xffff888237d22528 of 1 bytes by task 4249 on cpu 1: pagevec_add include/linux/pagevec.h:74 [inline] pagevec_add_and_need_flush mm/swap.c:222 [inline] lru_cache_add mm/swap.c:452 [inline] lru_cache_add_inactive_or_unevictable+0xaa/0x270 mm/swap.c:484 do_anonymous_page+0x716/0x8b0 mm/memory.c:3808 handle_pte_fault mm/memory.c:4557 [inline] __handle_mm_fault mm/memory.c:4694 [inline] handle_mm_fault+0x7f5/0x1580 mm/memory.c:4792 do_user_addr_fault+0x609/0xbe0 arch/x86/mm/fault.c:1397 handle_page_fault arch/x86/mm/fault.c:1485 [inline] exc_page_fault+0x91/0x220 arch/x86/mm/fault.c:1541 asm_exc_page_fault+0x1e/0x30 read to 0xffff888237d22528 of 1 bytes by task 524 on cpu 0: pagevec_count include/linux/pagevec.h:61 [inline] __lru_add_drain_all+0x12c/0x3e0 mm/swap.c:819 lru_add_drain_all+0xc/0x10 mm/swap.c:841 invalidate_bdev+0x56/0x80 block/bdev.c:87 ext4_put_super+0x620/0x910 fs/ext4/super.c:1239 generic_shutdown_super+0xe1/0x230 fs/super.c:465 kill_block_super+0x4a/0x90 fs/super.c:1395 deactivate_locked_super+0x65/0xd0 fs/super.c:335 deactivate_super+0x85/0x90 fs/super.c:366 cleanup_mnt+0x267/0x2d0 fs/namespace.c:1137 __cleanup_mnt+0x15/0x20 fs/namespace.c:1144 task_work_run+0xae/0x130 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x156/0x190 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+0x50/0xa0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x09 -> 0x0c Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 524 Comm: syz-executor.4 Not tainted 5.15.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================