================================================================== BUG: KCSAN: data-race in __mark_inode_dirty / other_inode_match write to 0xffff88812a728ca0 of 8 bytes by task 8063 on cpu 1: __mark_inode_dirty+0x1ce/0x940 fs/fs-writeback.c:2286 generic_update_time+0x184/0x270 fs/inode.c:1667 update_time fs/inode.c:1683 [inline] file_update_time+0x237/0x300 fs/inode.c:1898 ext4_page_mkwrite+0xf9/0xce0 fs/ext4/inode.c:6204 do_page_mkwrite+0x100/0x210 mm/memory.c:2208 wp_page_shared mm/memory.c:2507 [inline] do_wp_page+0xd65/0x11f0 mm/memory.c:2619 handle_pte_fault mm/memory.c:3865 [inline] __handle_mm_fault+0x1ab1/0x2c70 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 0xffff88812a728ca0 of 8 bytes by task 20039 on cpu 0: other_inode_match+0x6b/0x5c0 fs/ext4/inode.c:5156 find_inode_nowait+0x135/0x160 fs/inode.c:1437 ext4_update_other_inodes_time fs/ext4/inode.c:5204 [inline] ext4_do_update_inode fs/ext4/inode.c:5330 [inline] ext4_mark_iloc_dirty+0x12a8/0x1580 fs/ext4/inode.c:5876 ext4_mark_inode_dirty+0xe9/0x420 fs/ext4/inode.c:6055 ext4_evict_inode+0x645/0xdb0 fs/ext4/inode.c:329 evict+0x244/0x410 fs/inode.c:574 iput_final fs/inode.c:1563 [inline] iput+0x371/0x4e0 fs/inode.c:1589 dentry_unlink_inode+0x270/0x2e0 fs/dcache.c:374 d_delete fs/dcache.c:2449 [inline] d_delete+0xdb/0xe0 fs/dcache.c:2438 vfs_rmdir fs/namei.c:3884 [inline] vfs_rmdir+0x2e2/0x300 fs/namei.c:3849 do_rmdir+0x2cb/0x300 fs/namei.c:3932 __do_sys_rmdir fs/namei.c:3950 [inline] __se_sys_rmdir fs/namei.c:3948 [inline] __x64_sys_rmdir+0x2f/0x40 fs/namei.c:3948 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: 20039 Comm: syz-executor.0 Not tainted 5.4.0-rc6+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================