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Code Issues Releases Wiki Activity

kprobes: no need to check return value of debugfs_create functions 

When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Cc: "Naveen N. Rao" <naveen.n.rao@linux.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2019-01-22 16:21:46 +01:00
parent 4aa3b1f67d
commit 8c0fd1fa64
1 changed files with 6 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
kernel/kprobes.c
View File

@ -2570,33 +2570,20 @@ static const struct file_operations fops_kp = {
static int __init debugfs_kprobe_init(void)
{
struct dentry *dir, *file;
struct dentry *dir;
unsigned int value = 1;
dir = debugfs_create_dir("kprobes", NULL);
if (!dir)
return -ENOMEM;
file = debugfs_create_file("list", 0400, dir, NULL,
&debugfs_kprobes_operations);
if (!file)
goto error;
debugfs_create_file("list", 0400, dir, NULL,
&debugfs_kprobes_operations);
file = debugfs_create_file("enabled", 0600, dir,
&value, &fops_kp);
if (!file)
goto error;
debugfs_create_file("enabled", 0600, dir, &value, &fops_kp);
file = debugfs_create_file("blacklist", 0400, dir, NULL,
&debugfs_kprobe_blacklist_ops);
if (!file)
goto error;
debugfs_create_file("blacklist", 0400, dir, NULL,
&debugfs_kprobe_blacklist_ops);
return 0;
error:
debugfs_remove(dir);
return -ENOMEM;
}
late_initcall(debugfs_kprobe_init);