From: Zhang Rui rui.zhang@intel.com

stable inclusion from stable-v5.10.210 commit f0da068c75c20ffc5ba28243ff577531dc2af1fd category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9DNHE

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...

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[ Upstream commit 4e440abc894585a34c2904a32cd54af1742311b3 ]

Fix a bug that pdata->cpu_map[] is set before out-of-bounds check. The problem might be triggered on systems with more than 128 cores per package.

Fixes: 7108b80a542b ("hwmon/coretemp: Handle large core ID value") Signed-off-by: Zhang Rui rui.zhang@intel.com Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20240202092144.71180-2-rui.zhang@intel.com Signed-off-by: Guenter Roeck linux@roeck-us.net Stable-dep-of: fdaf0c8629d4 ("hwmon: (coretemp) Fix bogus core_id to attr name mapping") Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Wang Hai wanghai38@huawei.com --- drivers/hwmon/coretemp.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c index 5b2057ce5a59..7f6615ef8c88 100644 --- a/drivers/hwmon/coretemp.c +++ b/drivers/hwmon/coretemp.c @@ -467,18 +467,14 @@ static int create_core_data(struct platform_device *pdev, unsigned int cpu, if (pkg_flag) { attr_no = PKG_SYSFS_ATTR_NO; } else { - index = ida_alloc(&pdata->ida, GFP_KERNEL); + index = ida_alloc_max(&pdata->ida, NUM_REAL_CORES - 1, GFP_KERNEL); if (index < 0) return index; + pdata->cpu_map[index] = topology_core_id(cpu); attr_no = index + BASE_SYSFS_ATTR_NO; }

- if (attr_no > MAX_CORE_DATA - 1) { - err = -ERANGE; - goto ida_free; - } - tdata = init_temp_data(cpu, pkg_flag); if (!tdata) { err = -ENOMEM;