Ything-RepoMirrors/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-01-25 07:47:50 +00:00
Code Issues Packages Projects Releases Wiki Activity

timekeeping: Fix aux clocks sysfs initialization loop bound

Browse Source 
The loop in tk_aux_sysfs_init() uses `i <= MAX_AUX_CLOCKS` as the
termination condition, which results in 9 iterations (i=0 to 8) when
MAX_AUX_CLOCKS is defined as 8. However, the kernel is designed to support
only up to 8 auxiliary clocks.

This off-by-one error causes the creation of a 9th sysfs entry that exceeds
the intended auxiliary clock range.

Fix the loop bound to use `i < MAX_AUX_CLOCKS` to ensure exactly 8
auxiliary clock entries are created, matching the design specification.

Fixes: 7b95663a3d ("timekeeping: Provide interface to control auxiliary clocks")
Signed-off-by: Haofeng Li <lihaofeng@kylinos.cn>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://patch.msgid.link/tencent_2376993D9FC06A3616A4F981B3DE1C599607@qq.com
This commit is contained in:
Haofeng Li
2025-10-15 14:17:53 +08:00
committed by Thomas Gleixner
parent 211ddde082
commit 39a9ed0fb6
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
kernel/time/timekeeping.c
View File

@@ -3070,7 +3070,7 @@ static int __init tk_aux_sysfs_init(void)
return -ENOMEM;
}
for (int i = 0; i <= MAX_AUX_CLOCKS; i++) {
for (int i = 0; i < MAX_AUX_CLOCKS; i++) {
char id[2] = { [0] = '0' + i, };
struct kobject *clk = kobject_create_and_add(id, auxo);