mirror of https://gitee.com/openkylin/linux.git
[PATCH] V9FS: 'names_cache' memory leak
Data allocated with "__getname()" should always be free'd with "__putname()" because of the AUDITSYSCALL code. Signed-off-by: Davi Arnaut <davi.arnaut@gmail.com> Cc: <rminnich@lanl.gov> Cc: Eric Van Hensbergen <ericvh@ericvh.myip.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -266,7 +266,7 @@ v9fs_session_init(struct v9fs_session_info *v9ses,
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v9ses->remotename = __getname();
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if (!v9ses->remotename) {
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putname(v9ses->name);
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__putname(v9ses->name);
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return -ENOMEM;
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}
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@ -411,8 +411,8 @@ void v9fs_session_close(struct v9fs_session_info *v9ses)
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if (v9ses->transport)
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v9ses->transport->close(v9ses->transport);
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putname(v9ses->name);
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putname(v9ses->remotename);
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__putname(v9ses->name);
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__putname(v9ses->remotename);
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}
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/**
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@ -1105,7 +1105,7 @@ static int v9fs_vfs_readlink(struct dentry *dentry, char __user * buffer,
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}
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}
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putname(link);
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__putname(link);
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return retval;
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}
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@ -1129,7 +1129,7 @@ static void *v9fs_vfs_follow_link(struct dentry *dentry, struct nameidata *nd)
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len = v9fs_readlink(dentry, link, strlen(link));
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if (len < 0) {
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putname(link);
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__putname(link);
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link = ERR_PTR(len);
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} else
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link[len] = 0;
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@ -1152,7 +1152,7 @@ static void v9fs_vfs_put_link(struct dentry *dentry, struct nameidata *nd, void
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dprintk(DEBUG_VFS, " %s %s\n", dentry->d_name.name, s);
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if (!IS_ERR(s))
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putname(s);
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__putname(s);
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}
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/**
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@ -1228,7 +1228,7 @@ v9fs_vfs_link(struct dentry *old_dentry, struct inode *dir,
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FreeMem:
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kfree(mistat);
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kfree(fcall);
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putname(symname);
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__putname(symname);
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return retval;
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}
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@ -1319,7 +1319,7 @@ v9fs_vfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev)
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FreeMem:
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kfree(mistat);
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kfree(fcall);
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putname(symname);
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__putname(symname);
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return retval;
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}
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