KCSAN: data-race in do_timer_create / do_timer

Kernel	Title	Rank 🛈	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in do_timer_create / do_timer_create kernel	6	1	1875d	1875d	0/29	auto-closed as invalid on 2021/06/14 21:07
upstream	KCSAN: data-race in do_timer_create / do_timer_create (3) kernel	6	2	1702d	1706d	0/29	auto-closed as invalid on 2021/12/05 03:50
upstream	KCSAN: data-race in do_timer_create / do_timer_create (8) kernel	6	9	1134d	1164d	23/29	fixed on 2023/09/28 17:51
upstream	KCSAN: data-race in do_timer_create / do_timer_create (6) kernel	6	1	1371d	1371d	0/29	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	6	1	1329d	1329d	0/29	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	6	10	1425d	1530d	0/29	auto-closed as invalid on 2022/09/07 15:06
upstream	KCSAN: data-race in do_timer_create / do_timer_create (4) kernel	6	18	1570d	1657d	0/29	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 ==================================================================