KCSAN: data-race in do_timer_create / do_timer

Kernel	Title	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in do_timer_create / do_timer_create kernel	1	1494d	1494d	0/28	auto-closed as invalid on 2021/06/14 21:07
upstream	KCSAN: data-race in do_timer_create / do_timer_create (3) kernel	2	1320d	1325d	0/28	auto-closed as invalid on 2021/12/05 03:50
upstream	KCSAN: data-race in do_timer_create / do_timer_create (8) kernel	9	752d	783d	23/28	fixed on 2023/09/28 17:51
upstream	KCSAN: data-race in do_timer_create / do_timer_create (6) kernel	1	990d	990d	0/28	auto-obsoleted due to no activity on 2022/10/31 13:32
upstream	KCSAN: data-race in do_timer_create / do_timer_create (7) kernel	1	948d	948d	0/28	auto-obsoleted due to no activity on 2022/12/12 21:42
upstream	KCSAN: data-race in do_timer_create / do_timer_create (5) kernel	10	1044d	1149d	0/28	auto-closed as invalid on 2022/09/07 15:06
upstream	KCSAN: data-race in do_timer_create / do_timer_create (4) kernel	18	1188d	1276d	0/28	auto-closed as invalid on 2022/04/16 01:14

================================================================== BUG: KCSAN: data-race in do_timer_create / do_timer_create write to 0xffff8881559c023c of 4 bytes by task 21229 on cpu 1: posix_timer_add kernel/time/posix-timers.c:154 [inline] do_timer_create+0x349/0xad0 kernel/time/posix-timers.c:516 __do_sys_timer_create kernel/time/posix-timers.c:586 [inline] __se_sys_timer_create kernel/time/posix-timers.c:577 [inline] __x64_sys_timer_create+0xa3/0xd0 kernel/time/posix-timers.c:577 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff8881559c023c of 4 bytes by task 21227 on cpu 0: posix_timer_add kernel/time/posix-timers.c:143 [inline] do_timer_create+0x1b5/0xad0 kernel/time/posix-timers.c:516 __do_sys_timer_create kernel/time/posix-timers.c:586 [inline] __se_sys_timer_create kernel/time/posix-timers.c:577 [inline] __x64_sys_timer_create+0xa3/0xd0 kernel/time/posix-timers.c:577 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x00000005 -> 0x00000006 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 21227 Comm: syz-executor.5 Not tainted 5.13.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================