================================================================== BUG: KCSAN: data-race in __mark_inode_dirty / move_expired_inodes write to 0xffff888106603298 of 8 bytes by task 3609 on cpu 0: move_expired_inodes+0x1ca/0x4c0 fs/fs-writeback.c:1257 queue_io+0xe1/0x280 fs/fs-writeback.c:1304 wb_writeback+0x265/0x700 fs/fs-writeback.c:1903 wb_do_writeback+0x101/0x510 fs/fs-writeback.c:2050 wb_workfn+0xc8/0x520 fs/fs-writeback.c:2091 process_one_work+0x3e9/0x8f0 kernel/workqueue.c:2276 worker_thread+0x636/0xae0 kernel/workqueue.c:2422 kthread+0x1d0/0x1f0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 read to 0xffff888106603298 of 8 bytes by task 11122 on cpu 1: __mark_inode_dirty+0xda/0x6c0 fs/fs-writeback.c:2295 mark_inode_dirty include/linux/fs.h:2404 [inline] generic_write_end+0x157/0x180 fs/buffer.c:2223 ext4_da_write_end+0x59b/0x730 fs/ext4/inode.c:3110 generic_perform_write+0x23e/0x3a0 mm/filemap.c:3671 ext4_buffered_write_iter+0x2f2/0x3f0 fs/ext4/file.c:269 ext4_file_write_iter+0x2e7/0x11d0 fs/ext4/file.c:519 call_write_iter include/linux/fs.h:2114 [inline] new_sync_write fs/read_write.c:518 [inline] vfs_write+0x69d/0x770 fs/read_write.c:605 ksys_write+0xce/0x180 fs/read_write.c:658 __do_sys_write fs/read_write.c:670 [inline] __se_sys_write fs/read_write.c:667 [inline] __x64_sys_write+0x3e/0x50 fs/read_write.c:667 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x0000000000000007 -> 0x0000000000020087 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 11122 Comm: syz-executor.1 Not tainted 5.13.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================