KCSAN: data-race in setattr_copy / vfs

Kernel	Title	Rank 🛈	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in setattr_copy / vfs_write (4) fs	6	2	95d	112d	0/29	auto-obsoleted due to no activity on 2025/12/11 07:37
upstream	KCSAN: data-race in setattr_copy / vfs_write (2) ext4	6	1	1672d	1672d	0/29	auto-closed as invalid on 2021/07/27 10:55
upstream	KCSAN: data-race in setattr_copy / vfs_write (3) ext4	6	1	1442d	1442d	0/29	auto-closed as invalid on 2022/03/14 15:19

================================================================== BUG: KCSAN: data-race in setattr_copy / vfs_write write to 0xffff888105f115f8 of 2 bytes by task 28083 on cpu 1: setattr_copy+0x1af/0x1c0 fs/attr.c:247 ext4_setattr+0x5ea/0xec0 fs/ext4/inode.c:5515 notify_change+0x8a3/0xa80 fs/attr.c:398 chmod_common+0x11c/0x250 fs/open.c:585 vfs_fchmod fs/open.c:601 [inline] __do_sys_fchmod fs/open.c:610 [inline] __se_sys_fchmod fs/open.c:604 [inline] __x64_sys_fchmod+0xac/0xf0 fs/open.c:604 do_syscall_64+0x34/0x50 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888105f115f8 of 2 bytes by task 28078 on cpu 0: file_end_write include/linux/fs.h:2903 [inline] vfs_write+0x4ae/0x770 fs/read_write.c:613 ksys_write+0xce/0x180 fs/read_write.c:658 __do_sys_write fs/read_write.c:670 [inline] __se_sys_write fs/read_write.c:667 [inline] __x64_sys_write+0x3e/0x50 fs/read_write.c:667 do_syscall_64+0x34/0x50 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 28078 Comm: syz-executor.2 Tainted: G W 5.12.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================