================================================================== BUG: KCSAN: data-race in __ext4_update_other_inode_time / clear_inode write to 0xffff88811d40e700 of 8 bytes by task 9014 on cpu 1: clear_inode+0x105/0x140 fs/inode.c:538 ext4_clear_inode+0x1f/0x100 fs/ext4/super.c:1218 ext4_free_inode+0x1b6/0x9e0 fs/ext4/ialloc.c:276 ext4_evict_inode+0xad0/0xbf0 fs/ext4/inode.c:324 evict+0x19f/0x470 fs/inode.c:576 iput_final fs/inode.c:1652 [inline] iput+0x44a/0x550 fs/inode.c:1678 do_unlinkat+0x2c9/0x4d0 fs/namei.c:3895 __do_sys_unlink fs/namei.c:3936 [inline] __se_sys_unlink fs/namei.c:3934 [inline] __x64_sys_unlink+0x2c/0x30 fs/namei.c:3934 do_syscall_64+0x71/0x120 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff88811d40e700 of 8 bytes by task 18450 on cpu 0: __ext4_update_other_inode_time+0x45/0x570 fs/ext4/inode.c:4893 ext4_update_other_inodes_time fs/ext4/inode.c:4940 [inline] ext4_do_update_inode fs/ext4/inode.c:5068 [inline] ext4_mark_iloc_dirty+0x1266/0x1630 fs/ext4/inode.c:5624 __ext4_mark_inode_dirty+0x2b9/0x3f0 fs/ext4/inode.c:5818 ext4_dirty_inode+0xa6/0xc0 fs/ext4/inode.c:5854 __mark_inode_dirty+0x72/0x7d0 fs/fs-writeback.c:2258 mark_inode_dirty_sync include/linux/fs.h:2197 [inline] dquot_alloc_space_nofail include/linux/quotaops.h:306 [inline] dquot_alloc_block_nofail include/linux/quotaops.h:332 [inline] ext4_new_meta_blocks+0x143/0x180 fs/ext4/balloc.c:675 ext4_ext_grow_indepth fs/ext4/extents.c:1282 [inline] ext4_ext_create_new_leaf fs/ext4/extents.c:1386 [inline] ext4_ext_insert_extent+0x9b3/0x2b50 fs/ext4/extents.c:2059 ext4_ext_map_blocks+0x1776/0x20c0 fs/ext4/extents.c:4265 ext4_map_blocks+0x6a6/0xf60 fs/ext4/inode.c:626 mpage_map_one_extent+0x16e/0x390 fs/ext4/inode.c:2377 mpage_map_and_submit_extent fs/ext4/inode.c:2430 [inline] ext4_writepages+0xcf6/0x1cb0 fs/ext4/inode.c:2782 do_writepages+0x7b/0x150 mm/page-writeback.c:2354 __filemap_fdatawrite_range+0x19b/0x1d0 mm/filemap.c:421 file_write_and_wait_range+0x9f/0x120 mm/filemap.c:760 ext4_sync_file+0xe2/0x680 fs/ext4/fsync.c:151 vfs_fsync_range+0x107/0x120 fs/sync.c:200 generic_write_sync include/linux/fs.h:2882 [inline] ext4_buffered_write_iter+0x34e/0x390 fs/ext4/file.c:277 ext4_file_write_iter+0x4a3/0xfd0 fs/ext4/file.c:498 call_write_iter include/linux/fs.h:1907 [inline] do_iter_readv_writev+0x321/0x3c0 fs/read_write.c:694 do_iter_write+0x10e/0x470 fs/read_write.c:999 vfs_iter_write+0x4c/0x70 fs/read_write.c:1040 iter_file_splice_write+0x41a/0x770 fs/splice.c:750 do_splice_from fs/splice.c:846 [inline] direct_splice_actor+0x95/0x160 fs/splice.c:1016 splice_direct_to_actor+0x365/0x660 fs/splice.c:971 do_splice_direct+0xf2/0x170 fs/splice.c:1059 do_sendfile+0x562/0xb10 fs/read_write.c:1521 __do_sys_sendfile64 fs/read_write.c:1582 [inline] __se_sys_sendfile64 fs/read_write.c:1568 [inline] __x64_sys_sendfile64+0xf2/0x130 fs/read_write.c:1568 do_syscall_64+0x71/0x120 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 18450 Comm: syz-executor.1 Not tainted 5.8.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================