KCSAN: data-race in dput / shrink_dentry

Kernel	Title	Rank 🛈	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in dput / shrink_dentry_list fs	6	1	1698d	1698d	0/29	auto-closed as invalid on 2021/01/12 13:00
upstream	KCSAN: data-race in dput / shrink_dentry_list (4) fs	6	1	1039d	1039d	0/29	auto-obsoleted due to no activity on 2022/11/02 13:46
upstream	KCSAN: data-race in dput / shrink_dentry_list (3) fs	6	5	1297d	1341d	0/29	auto-closed as invalid on 2022/02/16 22:40

================================================================== BUG: KCSAN: data-race in dput / shrink_dentry_list read-write to 0xffff888107773000 of 4 bytes by task 17443 on cpu 0: d_shrink_del fs/dcache.c:421 [inline] shrink_dentry_list+0x20f/0x590 fs/dcache.c:1135 shrink_dcache_sb+0x10d/0x1c0 fs/dcache.c:1268 reconfigure_super+0x267/0x4d0 fs/super.c:887 do_remount fs/namespace.c:2618 [inline] path_mount+0x13b1/0x1c10 fs/namespace.c:3203 do_mount fs/namespace.c:3224 [inline] __do_sys_mount fs/namespace.c:3432 [inline] __se_sys_mount+0x23d/0x2e0 fs/namespace.c:3409 __x64_sys_mount+0x63/0x70 fs/namespace.c:3409 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff888107773000 of 4 bytes by task 8453 on cpu 1: fast_dput fs/dcache.c:746 [inline] dput+0x2f/0x420 fs/dcache.c:872 path_umount+0xd6/0x9f0 fs/namespace.c:1740 ksys_umount fs/namespace.c:1760 [inline] __do_sys_umount fs/namespace.c:1765 [inline] __se_sys_umount fs/namespace.c:1763 [inline] __x64_sys_umount+0xa6/0xd0 fs/namespace.c:1763 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: 8453 Comm: syz-executor.3 Not tainted 5.11.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================