================================================================== BUG: KCSAN: data-race in shrink_dentry_list / step_into read-write to 0xffff8881066f7e40 of 4 bytes by task 26618 on cpu 0: d_shrink_del fs/dcache.c:448 [inline] shrink_dentry_list+0x1c7/0x380 fs/dcache.c:1188 shrink_dcache_sb+0x165/0x290 fs/dcache.c:1321 reconfigure_super+0x3ef/0x580 fs/super.c:1118 do_remount fs/namespace.c:2882 [inline] path_mount+0x969/0xb30 fs/namespace.c:3654 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount+0x27f/0x2d0 fs/namespace.c:3861 __x64_sys_mount+0x67/0x80 fs/namespace.c:3861 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xffff8881066f7e40 of 4 bytes by task 26609 on cpu 1: __d_entry_type include/linux/dcache.h:385 [inline] d_is_symlink include/linux/dcache.h:415 [inline] step_into+0x12f/0x800 fs/namei.c:1844 walk_component+0x164/0x230 fs/namei.c:2007 lookup_last fs/namei.c:2458 [inline] path_lookupat+0x10a/0x2a0 fs/namei.c:2482 filename_lookup+0x126/0x300 fs/namei.c:2511 kern_path+0x39/0x100 fs/namei.c:2609 do_loopback+0x65/0x2d0 fs/namespace.c:2611 path_mount+0x3cb/0xb30 fs/namespace.c:3656 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount+0x27f/0x2d0 fs/namespace.c:3861 __x64_sys_mount+0x67/0x80 fs/namespace.c:3861 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x00290400 -> 0x00210000 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 26609 Comm: syz-executor.4 Not tainted 6.6.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 ==================================================================