diff options
| author | Akinobu Mita <akinobu.mita@gmail.com> | 2008-07-15 17:09:03 +0900 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-18 17:49:33 +0200 |
| commit | 8b2b9c1af065a45ef00c26964420489a53581779 (patch) | |
| tree | 214f389c25ddb34604619becd292ed355a33d109 /arch/x86/kernel/cpu/intel_cacheinfo.c | |
| parent | 2b7207a6b53bd07be53b4753a3ea5ecb8d180048 (diff) | |
x86, intel_cacheinfo: fix use-after-free cache_kobject
This avoids calling kobject_uevent() with cache_kobject that has
already been deallocated in an error path.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/cpu/intel_cacheinfo.c')
| -rw-r--r-- | arch/x86/kernel/cpu/intel_cacheinfo.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/arch/x86/kernel/cpu/intel_cacheinfo.c b/arch/x86/kernel/cpu/intel_cacheinfo.c index 2c8afafa18e..ff517f0b8cc 100644 --- a/arch/x86/kernel/cpu/intel_cacheinfo.c +++ b/arch/x86/kernel/cpu/intel_cacheinfo.c @@ -780,15 +780,14 @@ static int __cpuinit cache_add_dev(struct sys_device * sys_dev) } kobject_put(per_cpu(cache_kobject, cpu)); cpuid4_cache_sysfs_exit(cpu); - break; + return retval; } kobject_uevent(&(this_object->kobj), KOBJ_ADD); } - if (!retval) - cpu_set(cpu, cache_dev_map); + cpu_set(cpu, cache_dev_map); kobject_uevent(per_cpu(cache_kobject, cpu), KOBJ_ADD); - return retval; + return 0; } static void __cpuinit cache_remove_dev(struct sys_device * sys_dev) |