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| author | Dave Jones <davej@redhat.com> | 2005-10-28 03:02:06 +0400 |
|---|---|---|
| committer | Dave Jones <davej@redhat.com> | 2005-10-28 03:02:06 +0400 |
| commit | bc7b26fd7ca5e0c6e769d3886c022f0a98fd88ec (patch) | |
| tree | 19f23041be60367024f292780ba3e79ff3259fc8 | |
| parent | e98df50c5200ae3c748d69002a8827afc9d2eae2 (diff) | |
| download | linux-bc7b26fd7ca5e0c6e769d3886c022f0a98fd88ec.tar.xz | |
[CPUFREQ] Check return value of cpufreq_cpu_get in cpufreq_stats
This fixes an issue found in drivers/cpufreq/cpufreq_stats.c by Coverity.
Error reported:
CID: 2642
Checker: NULL_RETURNS (help)
File: /export2/p4-coverity/mc2/linux26/drivers/cpufreq/cpufreq_stats.c
Function: cpufreq_stats_create_table
Description: Dereferencing NULL value "data"
Patch description:
The return of cpufreq_cpu_get can be NULL, check return code and return
-EINVAL if it is NULL.
Signed-off-by: Jayachandran C. <c.jayachandran at gmail.com>
Signed-off-by: Dave Jones <davej@redhat.com>
| -rw-r--r-- | drivers/cpufreq/cpufreq_stats.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c index ff16a87125d9..19b4c3e7c390 100644 --- a/drivers/cpufreq/cpufreq_stats.c +++ b/drivers/cpufreq/cpufreq_stats.c @@ -196,6 +196,11 @@ cpufreq_stats_create_table (struct cpufreq_policy *policy, return -ENOMEM; data = cpufreq_cpu_get(cpu); + if (data == NULL) { + ret = -EINVAL; + goto error_get_fail; + } + if ((ret = sysfs_create_group(&data->kobj, &stats_attr_group))) goto error_out; |