From: Philippe Mathieu-Daudé <f4bug@amsat.org>
Date: Mon, 21 Oct 2019 11:48:49 +0000 (+0200)
Subject: linux-user/strace: Display invalid pointer in print_timeval()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=8f93089d0a3cde294e8bb16978a3f7fd0b2df2a3;p=qemu.git

linux-user/strace: Display invalid pointer in print_timeval()

Suggested-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20191021114857.20538-2-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
---

diff --git a/linux-user/strace.c b/linux-user/strace.c
index c80e93b5db..f326c357a2 100644
--- a/linux-user/strace.c
+++ b/linux-user/strace.c
@@ -1243,8 +1243,10 @@ print_timeval(abi_ulong tv_addr, int last)
         struct target_timeval *tv;
 
         tv = lock_user(VERIFY_READ, tv_addr, sizeof(*tv), 1);
-        if (!tv)
+        if (!tv) {
+            print_pointer(tv_addr, last);
             return;
+        }
         gemu_log("{" TARGET_ABI_FMT_ld "," TARGET_ABI_FMT_ld "}%s",
             tswapal(tv->tv_sec), tswapal(tv->tv_usec), get_comma(last));
         unlock_user(tv, tv_addr, 0);