From: Eugene Syromyatnikov <evgsyr@gmail.com>
Date: Sun, 11 Dec 2016 21:12:27 +0000 (+0300)
Subject: prctl: print pointer returned by PR_GET_TID_ADDRESS as kernel long
X-Git-Tag: v4.16~144
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b5db9917f37a3548813d0bb3ded7b42de01df72b;p=strace

prctl: print pointer returned by PR_GET_TID_ADDRESS as kernel long

Since there is no compat handler for x32/n32, kernel returns kernel's
long as a result of the call.

Interesting, does any callee out there actually care to have enough room
allocated for kernel long?

* prctl.c (SYS_FUNC(prctl)): Use printnum_kptr instead of printnum_ptr
to print the value stored at address pointed by addr2 argument
of PR_GET_TID_ADDRESS operation.
---

diff --git a/prctl.c b/prctl.c
index dede4c9d..6779ad51 100644
--- a/prctl.c
+++ b/prctl.c
@@ -151,7 +151,7 @@ SYS_FUNC(prctl)
 		if (entering(tcp))
 			tprints(", ");
 		else
-			printnum_ptr(tcp, arg2);
+			printnum_kptr(tcp, arg2);
 		break;
 
 	case PR_GET_TSC: