================================================================== BUG: KCSAN: data-race in __mark_inode_dirty / writeback_sb_inodes write to 0xffff8880a57ca280 of 8 bytes by task 261 on cpu 0: writeback_sb_inodes+0x4b7/0xff0 fs/fs-writeback.c:1710 wb_writeback+0x28d/0x6f0 fs/fs-writeback.c:1894 wb_do_writeback+0x101/0x5f0 fs/fs-writeback.c:2039 wb_workfn+0xc8/0x470 fs/fs-writeback.c:2080 process_one_work+0x3e1/0x9a0 kernel/workqueue.c:2269 worker_thread+0x665/0xbe0 kernel/workqueue.c:2415 kthread+0x20d/0x230 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 read to 0xffff8880a57ca280 of 8 bytes by task 8722 on cpu 1: __mark_inode_dirty+0xb9/0x7f0 fs/fs-writeback.c:2274 generic_update_time fs/inode.c:1762 [inline] update_time fs/inode.c:1775 [inline] touch_atime+0x157/0x1a0 fs/inode.c:1846 file_accessed include/linux/fs.h:2206 [inline] iterate_dir+0x31b/0x370 fs/readdir.c:70 __do_sys_getdents fs/readdir.c:283 [inline] __se_sys_getdents+0x7f/0x190 fs/readdir.c:268 __x64_sys_getdents+0x3f/0x50 fs/readdir.c:268 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 8722 Comm: syz-executor.4 Not tainted 5.9.0-rc8-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================