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| author |   Akinobu Mita <akinobu.mita@gmail.com> | 2007-07-14 11:03:35 +0900 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@suse.de> | 2007-07-18 15:49:49 -0700 |
| commit | 01da2425f327d7ac673e594bee5655523115970b (patch) | |
| tree | 44a33a3fa5e088dfe63e9485823400d12aab3b0b /fs/sysfs | |
| parent | PM: remove deprecated dpm_runtime_* routines (diff) | |
| download | linux-dev-01da2425f327d7ac673e594bee5655523115970b.tar.xz linux-dev-01da2425f327d7ac673e594bee5655523115970b.zip | |
sysfs: avoid kmem_cache_free(NULL)
kmem_cache_free() with NULL is not allowed. But it may happen
if out of memory error is triggered in sysfs_new_dirent().
This patch fixes that error handling.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs/sysfs')
| -rw-r--r-- | fs/sysfs/dir.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c index aee966c44aac..2e6775a836f2 100644 --- a/fs/sysfs/dir.c +++ b/fs/sysfs/dir.c @@ -361,20 +361,20 @@ static struct dentry_operations sysfs_dentry_ops = { struct sysfs_dirent *sysfs_new_dirent(const char *name, umode_t mode, int type) { char *dup_name = NULL; - struct sysfs_dirent *sd = NULL; + struct sysfs_dirent *sd; if (type & SYSFS_COPY_NAME) { name = dup_name = kstrdup(name, GFP_KERNEL); if (!name) - goto err_out; + return NULL; } sd = kmem_cache_zalloc(sysfs_dir_cachep, GFP_KERNEL); if (!sd) - goto err_out; + goto err_out1; if (sysfs_alloc_ino(&sd->s_ino)) - goto err_out; + goto err_out2; atomic_set(&sd->s_count, 1); atomic_set(&sd->s_active, 0); @@ -386,9 +386,10 @@ struct sysfs_dirent *sysfs_new_dirent(const char *name, umode_t mode, int type) return sd; - err_out: - kfree(dup_name); + err_out2: kmem_cache_free(sysfs_dir_cachep, sd); + err_out1: + kfree(dup_name); return NULL; } |