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kernel/fail_function.c: remove meaningless null pointer check before debugfs_remove_recursive 

debugfs_remove_recursive() has taken the null pointer into account.  just
remove the null check before debugfs_remove_recursive().

Link: http://lkml.kernel.org/r/1537494404-16473-1-git-send-email-zhongjiang@huawei.com
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
hifive-unleashed-5.1
zhong jiang 2018-10-30 15:04:51 -07:00 committed by Linus Torvalds
parent de0d22e50c
commit ea6f650465
1 changed files with 1 additions and 2 deletions
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kernel/fail_function.c
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@ -173,8 +173,7 @@ static void fei_debugfs_remove_attr(struct fei_attr *attr)
struct dentry *dir;
dir = debugfs_lookup(attr->kp.symbol_name, fei_debugfs_dir);
if (dir)
debugfs_remove_recursive(dir);
debugfs_remove_recursive(dir);
}
static int fei_kprobe_handler(struct kprobe *kp, struct pt_regs *regs)