================================================================== BUG: KCSAN: data-race in delete_from_page_cache_batch / page_mapping write to 0xffffea0002045a58 of 8 bytes by task 27978 on cpu 1: page_cache_delete_batch mm/filemap.c:326 [inline] delete_from_page_cache_batch+0x674/0x790 mm/filemap.c:357 truncate_inode_pages_range+0x593/0x1120 mm/truncate.c:366 truncate_inode_pages+0x2e/0x40 mm/truncate.c:476 kill_bdev+0x89/0xb0 fs/block_dev.c:86 set_blocksize+0x1dd/0x210 fs/block_dev.c:136 sb_set_blocksize+0x3d/0xc0 fs/block_dev.c:145 sb_min_blocksize+0xa5/0xc0 fs/block_dev.c:161 fat_fill_super+0x1da/0x1f50 fs/fat/inode.c:1646 vfat_fill_super+0x3b/0x50 fs/fat/namei_vfat.c:1050 mount_bdev+0x262/0x2d0 fs/super.c:1415 vfat_mount+0x3e/0x60 fs/fat/namei_vfat.c:1057 legacy_get_tree+0x7e/0xf0 fs/fs_context.c:647 vfs_get_tree+0x56/0x1a0 fs/super.c:1545 do_new_mount fs/namespace.c:2822 [inline] do_mount+0x1004/0x14f0 fs/namespace.c:3142 ksys_mount+0xe8/0x160 fs/namespace.c:3351 __do_sys_mount fs/namespace.c:3365 [inline] __se_sys_mount fs/namespace.c:3362 [inline] __x64_sys_mount+0x70/0x90 fs/namespace.c:3362 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffffea0002045a58 of 8 bytes by task 27975 on cpu 0: page_mapping+0x185/0x2a0 mm/util.c:675 page_evictable+0x3a/0x110 mm/vmscan.c:4313 __pagevec_lru_add_fn+0xe1/0x810 mm/swap.c:961 pagevec_lru_move_fn+0xfe/0x180 mm/swap.c:211 __pagevec_lru_add mm/swap.c:985 [inline] __lru_cache_add+0x120/0x1d0 mm/swap.c:411 lru_cache_add+0x1f/0x30 mm/swap.c:447 add_to_page_cache_lru+0x16a/0x260 mm/filemap.c:959 mpage_readpages+0x263/0x3c0 fs/mpage.c:399 blkdev_readpages+0x36/0x50 fs/block_dev.c:620 read_pages+0xa2/0x2d0 mm/readahead.c:126 __do_page_cache_readahead+0x353/0x390 mm/readahead.c:212 force_page_cache_readahead+0x13a/0x1f0 mm/readahead.c:243 page_cache_sync_readahead+0x1cf/0x1e0 mm/readahead.c:522 generic_file_buffered_read mm/filemap.c:2051 [inline] generic_file_read_iter+0xeb6/0x1440 mm/filemap.c:2324 blkdev_read_iter+0xb2/0xe0 fs/block_dev.c:2039 call_read_iter include/linux/fs.h:1896 [inline] new_sync_read+0x389/0x4f0 fs/read_write.c:414 __vfs_read+0xb1/0xc0 fs/read_write.c:427 vfs_read fs/read_write.c:461 [inline] vfs_read+0x143/0x2c0 fs/read_write.c:446 ksys_read+0xd5/0x1b0 fs/read_write.c:587 __do_sys_read fs/read_write.c:597 [inline] __se_sys_read fs/read_write.c:595 [inline] __x64_sys_read+0x4c/0x60 fs/read_write.c:595 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 27975 Comm: blkid Not tainted 5.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================