From: Petr Uzel <petr.uzel@suse.cz>
Date: Thu, 13 Oct 2011 12:40:31 +0000 (+0200)
Subject: rtcwake: fix crash (invalid free)
X-Git-Tag: v2.21-rc1~333
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=8cbe756a6373c0ee10e125b012ae7490720b982f;p=thirdparty%2Futil-linux.git

rtcwake: fix crash (invalid free)

~ $ rtcwake -d X -s 10
*** glibc detected *** rtcwake: munmap_chunk(): invalid pointer: 0x00007fff839253c3 ***
======= Backtrace: =========
/lib64/libc.so.6(+0x733b6)[0x7f582677a3b6]
rtcwake[0x4022d5]
/lib64/libc.so.6(__libc_start_main+0xfd)[0x7f5826725bfd]
rtcwake[0x4016b9]
======= Memory map: ========
<SNIP>

Signed-off-by: Petr Uzel <petr.uzel@suse.cz>
---

diff --git a/sys-utils/rtcwake.c b/sys-utils/rtcwake.c
index 2f174002d8..591ef8bcae 100644
--- a/sys-utils/rtcwake.c
+++ b/sys-utils/rtcwake.c
@@ -495,7 +495,6 @@ int main(int argc, char **argv)
 
 		strcpy(new_devname, "/dev/");
 		strcat(new_devname, devname);
-		free(devname);
 		devname = new_devname;
 	}