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authorEric W. Biederman <ebiederm@xmission.com>2018-01-22 14:58:57 -0600
committerEric W. Biederman <ebiederm@xmission.com>2018-01-22 19:07:08 -0600
commit5f74972ce69fdc6473f74253283408af75a3be15 (patch)
tree0353784ed4e95a7a32e159ba9b66d1f697317680 /kernel/signal.c
parent66e0f26315ce7dd3f4efdbdee63f30dac643763f (diff)
signal: Don't use structure initializers for struct siginfo
The siginfo structure has all manners of holes with the result that a structure initializer is not guaranteed to initialize all of the bits. As we have to copy the structure to userspace don't even try to use a structure initializer. Instead use clear_siginfo followed by initializing selected fields. This gives a guarantee that uninitialized kernel memory is not copied to userspace. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'kernel/signal.c')
-rw-r--r--kernel/signal.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/signal.c b/kernel/signal.c
index 4976f05aa09b..f14492ff976f 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -3163,8 +3163,9 @@ do_send_specific(pid_t tgid, pid_t pid, int sig, struct siginfo *info)
static int do_tkill(pid_t tgid, pid_t pid, int sig)
{
- struct siginfo info = {};
+ struct siginfo info;
+ clear_siginfo(&info);
info.si_signo = sig;
info.si_errno = 0;
info.si_code = SI_TKILL;