EXT4-fs (loop4): unsupported inode size: 14619 ================================================================== BUG: KCSAN: data-race in __lru_cache_add / lru_add_drain_all write to 0xffff88812bf27620 of 1 bytes by task 336 on cpu 1: pagevec_add include/linux/pagevec.h:81 [inline] __lru_cache_add+0xbf/0x1d0 mm/swap.c:405 lru_cache_add mm/swap.c:442 [inline] lru_cache_add_active_or_unevictable+0xb6/0x1f0 mm/swap.c:472 wp_page_copy+0x83b/0x1160 mm/memory.c:2369 do_wp_page+0x192/0x11f0 mm/memory.c:2628 handle_pte_fault mm/memory.c:3865 [inline] __handle_mm_fault+0x1c07/0x2cb0 mm/memory.c:3973 handle_mm_fault+0x21b/0x530 mm/memory.c:4010 do_user_addr_fault arch/x86/mm/fault.c:1441 [inline] __do_page_fault+0x3fb/0x9e0 arch/x86/mm/fault.c:1506 do_page_fault+0x54/0x233 arch/x86/mm/fault.c:1530 page_fault+0x34/0x40 arch/x86/entry/entry_64.S:1202 read to 0xffff88812bf27620 of 1 bytes by task 330 on cpu 0: lru_add_drain_all+0xf5/0x350 mm/swap.c:728 invalidate_bdev+0x6e/0x90 fs/block_dev.c:97 __loop_clr_fd+0x250/0x720 drivers/block/loop.c:1128 loop_clr_fd drivers/block/loop.c:1224 [inline] lo_ioctl+0x24c/0xc80 drivers/block/loop.c:1593 __blkdev_driver_ioctl block/ioctl.c:304 [inline] blkdev_ioctl+0x979/0x1160 block/ioctl.c:606 block_ioctl+0x95/0xc0 fs/block_dev.c:1954 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0x991/0xc60 fs/ioctl.c:696 ksys_ioctl+0xbd/0xe0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x4c/0x60 fs/ioctl.c:718 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 330 Comm: syz-executor.4 Not tainted 5.4.0-rc3+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================