From: Francis Laniel <flaniel@microsoft.com>
Date: Mon, 11 Oct 2021 15:35:12 +0000 (+0200)
Subject: tools/capable: Set data to zero before setting fields.
X-Git-Tag: v0.23.0~22
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=46a2afdc82b995cc19272cdd9d781dadfc0d3b1f;p=platform%2Fupstream%2Fbcc.git

tools/capable: Set data to zero before setting fields.

This commit ensures data contains all 0 before setting its fields.
So, even if some fields are not set, there should be no problem with unaligned
access.

Signed-off-by: Francis Laniel <flaniel@microsoft.com>
---

diff --git a/tools/capable.py b/tools/capable.py
index b89f2af9..acaa43c3 100755
--- a/tools/capable.py
+++ b/tools/capable.py
@@ -182,7 +182,15 @@ int kprobe__cap_capable(struct pt_regs *ctx, const struct cred *cred,
     }
 
     u32 uid = bpf_get_current_uid_gid();
-    struct data_t data = {.tgid = tgid, .pid = pid, .uid = uid, .cap = cap, .audit = audit, .insetid = insetid};
+
+    struct data_t data = {};
+
+    data.tgid = tgid;
+    data.pid = pid;
+    data.uid = uid;
+    data.cap = cap;
+    data.audit = audit;
+    data.insetid = insetid;
 #ifdef KERNEL_STACKS
     data.kernel_stack_id = stacks.get_stackid(ctx, 0);
 #endif