lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Tue, 18 Nov 2014 15:51:31 +0100 From: SF Markus Elfring <elfring@...rs.sourceforge.net> To: linux-kernel@...r.kernel.org CC: kernel-janitors@...r.kernel.org, Coccinelle <cocci@...teme.lip6.fr> Subject: [PATCH 1/1] fs-proc: One function call less in proc_sys_lookup() after error detection From: Markus Elfring <elfring@...rs.sourceforge.net> Date: Tue, 18 Nov 2014 15:42:43 +0100 The sysctl_head_finish() function was called in an inefficient way by the implementation of the proc_sys_lookup() function in case of a lookup failure. The corresponding source code was improved by deletion of an unnecessary null pointer check and a few adjustments for jump labels. Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net> --- fs/proc/proc_sysctl.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c index f92d5dd..6606aaf 100644 --- a/fs/proc/proc_sysctl.c +++ b/fs/proc/proc_sysctl.c @@ -457,21 +457,21 @@ static struct dentry *proc_sys_lookup(struct inode *dir, struct dentry *dentry, ret = sysctl_follow_link(&h, &p, current->nsproxy); err = ERR_PTR(ret); if (ret) - goto out; + goto inode_failure; } err = ERR_PTR(-ENOMEM); inode = proc_sys_make_inode(dir->i_sb, h ? h : head, p); if (!inode) - goto out; + goto inode_failure; err = NULL; d_set_d_op(dentry, &proc_sys_dentry_operations); d_add(dentry, inode); +inode_failure: + sysctl_head_finish(h); out: - if (h) - sysctl_head_finish(h); sysctl_head_finish(head); return err; } -- 2.1.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists