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authorTom Rix <trix@redhat.com>2020-10-04 07:24:22 -0700
committerJohn Johansen <john.johansen@canonical.com>2021-02-07 04:15:46 -0800
commitd108370c644b153382632b3e5511ade575c91c86 (patch)
treee1d2e3902e8854a3d75833144733f3d5f3582f95 /security
parent4af7c863fc85ad756b7a978fe1096b80a855543c (diff)
apparmor: fix error check
clang static analysis reports this representative problem: label.c:1463:16: warning: Assigned value is garbage or undefined label->hname = name; ^ ~~~~ In aa_update_label_name(), this the problem block of code if (aa_label_acntsxprint(&name, ...) == -1) return res; On failure, aa_label_acntsxprint() has a more complicated return that just -1. So check for a negative return. It was also noted that the aa_label_acntsxprint() main comment refers to a nonexistent parameter, so clean up the comment. Fixes: f1bd904175e8 ("apparmor: add the base fns() for domain labels") Signed-off-by: Tom Rix <trix@redhat.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: John Johansen <john.johansen@canonical.com>
Diffstat (limited to 'security')
-rw-r--r--security/apparmor/label.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/security/apparmor/label.c b/security/apparmor/label.c
index 23f7a193df4f..f5eb9ac07e9b 100644
--- a/security/apparmor/label.c
+++ b/security/apparmor/label.c
@@ -1453,7 +1453,7 @@ bool aa_update_label_name(struct aa_ns *ns, struct aa_label *label, gfp_t gfp)
if (label->hname || labels_ns(label) != ns)
return res;
- if (aa_label_acntsxprint(&name, ns, label, FLAGS_NONE, gfp) == -1)
+ if (aa_label_acntsxprint(&name, ns, label, FLAGS_NONE, gfp) < 0)
return res;
ls = labels_set(label);
@@ -1703,7 +1703,7 @@ int aa_label_asxprint(char **strp, struct aa_ns *ns, struct aa_label *label,
/**
* aa_label_acntsxprint - allocate a __counted string buffer and print label
- * @strp: buffer to write to. (MAY BE NULL if @size == 0)
+ * @strp: buffer to write to.
* @ns: namespace profile is being viewed from
* @label: label to view (NOT NULL)
* @flags: flags controlling what label info is printed