================================================================== BUG: KCSAN: data-race in __mark_inode_dirty / other_inode_match write to 0xffff8880bb1e1740 of 8 bytes by task 9340 on cpu 0: __mark_inode_dirty+0x1c1/0x940 fs/fs-writeback.c:2289 generic_update_time+0x184/0x270 fs/inode.c:1682 update_time+0x7d/0x90 fs/inode.c:1695 touch_atime+0x13f/0x150 fs/inode.c:1766 pick_link fs/namei.c:1624 [inline] step_into+0xab5/0x1090 fs/namei.c:1702 walk_component+0xde/0x390 fs/namei.c:1852 lookup_last fs/namei.c:2295 [inline] path_lookupat.isra.0+0x119/0x350 fs/namei.c:2319 filename_lookup+0x145/0x2c0 fs/namei.c:2352 user_path_at_empty+0x47/0x60 fs/namei.c:2632 user_path_at include/linux/namei.h:59 [inline] ksys_umount+0xee/0xaf0 fs/namespace.c:1683 __do_sys_umount fs/namespace.c:1709 [inline] __se_sys_umount fs/namespace.c:1707 [inline] __x64_sys_umount+0x35/0x50 fs/namespace.c:1707 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff8880bb1e1740 of 8 bytes by task 9513 on cpu 1: other_inode_match+0x6a/0x570 fs/ext4/inode.c:4875 find_inode_nowait+0x12f/0x160 fs/inode.c:1446 ext4_update_other_inodes_time fs/ext4/inode.c:4923 [inline] ext4_do_update_inode fs/ext4/inode.c:5049 [inline] ext4_mark_iloc_dirty+0x12ad/0x1580 fs/ext4/inode.c:5603 ext4_mark_inode_dirty+0xe6/0x420 fs/ext4/inode.c:5796 ext4_evict_inode+0x59f/0xa30 fs/ext4/inode.c:263 evict+0x238/0x3f0 fs/inode.c:576 iput_final fs/inode.c:1572 [inline] iput+0x36a/0x4d0 fs/inode.c:1598 dentry_unlink_inode+0x272/0x2e0 fs/dcache.c:374 d_delete fs/dcache.c:2451 [inline] d_delete+0xca/0xe0 fs/dcache.c:2440 vfs_rmdir fs/namei.c:3702 [inline] vfs_rmdir+0x2f1/0x310 fs/namei.c:3667 do_rmdir+0x2e9/0x320 fs/namei.c:3750 __do_sys_rmdir fs/namei.c:3768 [inline] __se_sys_rmdir fs/namei.c:3766 [inline] __x64_sys_rmdir+0x2c/0x40 fs/namei.c:3766 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 9513 Comm: syz-executor.5 Not tainted 5.7.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================