From f5df5d69a78b03b7c843e3642725381fc9c76b95 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Thu, 24 Sep 2009 06:52:06 -0700 Subject: [PATCH] mdmon: fix freeing unallocated memory mdmon was creating a supertype struct with malloc, and thus not necessarily getting zero-d memory. This was causing it to segfault when called like this from the initrd: /sbin/mdmon /proc/mdstat /sysroot The problem was that load_super_imsm would get called on the non-zero'd super struct, whcih in turn calls free_super_imsm, which checks st->sb, which should be zero but isn't and then starts freeing bogus memory. Signed-off-by: Dan Williams --- mdmon.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mdmon.c b/mdmon.c index 37f97af..31994d8 100644 --- a/mdmon.c +++ b/mdmon.c @@ -395,7 +395,7 @@ int mdmon(char *devname, int devnum, int scan, char *switchroot) } else pfd[0] = pfd[1] = -1; - container = malloc(sizeof(*container)); + container = calloc(1, sizeof(*container)); container->devnum = devnum; container->devname = devname; container->arrays = NULL;