KCSAN: data-race in inode_permission / inode

Kernel	Title	Rank 🛈	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in inode_permission / inode_permission (4) fs	6	1	2170d	2136d	0/29	auto-closed as invalid on 2020/12/21 11:15
upstream	KCSAN: data-race in inode_permission / inode_permission (5) fs	6	12	1962d	2071d	0/29	auto-closed as invalid on 2021/07/04 17:17
upstream	KCSAN: data-race in inode_permission / inode_permission fs	6	27	2385d	2545d	0/29	auto-closed as invalid on 2020/06/11 10:47
upstream	KCSAN: data-race in inode_permission / inode_permission (3) fs	6	1	2244d	2244d	0/29	auto-closed as invalid on 2020/09/24 20:47

================================================================== BUG: KCSAN: data-race in inode_permission / inode_permission write to 0xffff8880b89e1aaa of 2 bytes by task 31167 on cpu 0: do_inode_permission fs/namei.c:402 [inline] inode_permission+0x314/0x330 fs/namei.c:463 may_lookup fs/namei.c:1569 [inline] link_path_walk+0x14a/0x730 fs/namei.c:2125 path_openat+0x199/0x20e0 fs/namei.c:3356 do_filp_open+0xbd/0x1d0 fs/namei.c:3387 do_sys_openat2+0x33c/0x4a0 fs/open.c:1179 do_sys_open fs/open.c:1195 [inline] ksys_open include/linux/syscalls.h:1388 [inline] __do_sys_open fs/open.c:1201 [inline] __se_sys_open fs/open.c:1199 [inline] __x64_sys_open+0xe2/0x110 fs/open.c:1199 do_syscall_64+0x51/0xb0 arch/x86/entry/common.c:384 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff8880b89e1aaa of 2 bytes by task 31154 on cpu 1: do_inode_permission fs/namei.c:396 [inline] inode_permission+0x41/0x330 fs/namei.c:463 may_lookup fs/namei.c:1569 [inline] link_path_walk+0x14a/0x730 fs/namei.c:2125 path_openat+0x199/0x20e0 fs/namei.c:3356 do_filp_open+0xbd/0x1d0 fs/namei.c:3387 do_sys_openat2+0x33c/0x4a0 fs/open.c:1179 do_sys_open fs/open.c:1195 [inline] ksys_open include/linux/syscalls.h:1388 [inline] __do_sys_open fs/open.c:1201 [inline] __se_sys_open fs/open.c:1199 [inline] __x64_sys_open+0xe2/0x110 fs/open.c:1199 do_syscall_64+0x51/0xb0 arch/x86/entry/common.c:384 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 31154 Comm: systemd-udevd Not tainted 5.8.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================