summaryrefslogtreecommitdiff
path: root/kernel/ptrace.c
diff options
context:
space:
mode:
authorAndy Lutomirski <luto@kernel.org>2016-03-23 00:24:55 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-03-23 01:36:02 +0300
commit5c465217a930d4bbb7dd35a56bde1eea5bbd14d6 (patch)
treeed55ab6ea3ba72ce135c9ba6a971b347f991a685 /kernel/ptrace.c
parent5c38065e021bc76f97fc08997f6d7fc7ea3fb7a7 (diff)
downloadlinux-5c465217a930d4bbb7dd35a56bde1eea5bbd14d6.tar.xz
ptrace: in PEEK_SIGINFO, check syscall bitness, not task bitness
Users of the 32-bit ptrace() ABI expect the full 32-bit ABI. siginfo translation should check ptrace() ABI, not caller task ABI. This is an ABI change on SPARC. Let's hope that no one relied on the old buggy ABI. Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/ptrace.c')
-rw-r--r--kernel/ptrace.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index 2341efe7fe02..c79b91d09e35 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -681,7 +681,7 @@ static int ptrace_peek_siginfo(struct task_struct *child,
break;
#ifdef CONFIG_COMPAT
- if (unlikely(is_compat_task())) {
+ if (unlikely(in_compat_syscall())) {
compat_siginfo_t __user *uinfo = compat_ptr(data);
if (copy_siginfo_to_user32(uinfo, &info) ||