kprobes: initialize before using a hlist
authorAnanth N Mavinakayanahalli <ananth@in.ibm.com>
Fri, 20 Jan 2012 22:34:04 +0000 (14:34 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Mon, 23 Jan 2012 16:38:48 +0000 (08:38 -0800)
commitd496aab567e7e52b3e974c9192a5de6e77dce32c
treeaa323c702bbf24567e4b7a244a135346f6aaeb5b
parent2a4e64b8f6bcbf23ddd375b78342051ae8862284
kprobes: initialize before using a hlist

Commit ef53d9c5e ("kprobes: improve kretprobe scalability with hashed
locking") introduced a bug where we can potentially leak
kretprobe_instances since we initialize a hlist head after having used
it.

Initialize the hlist head before using it.

Reported by: Jim Keniston <jkenisto@us.ibm.com>
Acked-by: Jim Keniston <jkenisto@us.ibm.com>
Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Srinivasa D S <srinivasa@in.ibm.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
kernel/kprobes.c