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authorAl Viro <viro@zeniv.linux.org.uk>2012-12-23 02:11:49 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2013-02-03 18:15:53 -0500
commit9df794d9275d41012909aaff3cab759e37871974 (patch)
treeff17244321d7297c347351f4a42016ab9392d5d0 /arch/cris
parentd970e42897525adc836207b44ef64347e59d613e (diff)
cris: don't leave ->uc_stack unitialized - we'll use its contents on sigreturn
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/cris')
-rw-r--r--arch/cris/arch-v10/kernel/signal.c2
-rw-r--r--arch/cris/arch-v32/kernel/signal.c1
2 files changed, 3 insertions, 0 deletions
diff --git a/arch/cris/arch-v10/kernel/signal.c b/arch/cris/arch-v10/kernel/signal.c
index 187237f655e6..9570946a6958 100644
--- a/arch/cris/arch-v10/kernel/signal.c
+++ b/arch/cris/arch-v10/kernel/signal.c
@@ -356,6 +356,8 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
+ err |= __save_altstack(&frame->uc.uc_stack, rdusp());
+
if (err)
goto give_sigsegv;
diff --git a/arch/cris/arch-v32/kernel/signal.c b/arch/cris/arch-v32/kernel/signal.c
index 168b6958e2b8..1f29c692b7ef 100644
--- a/arch/cris/arch-v32/kernel/signal.c
+++ b/arch/cris/arch-v32/kernel/signal.c
@@ -365,6 +365,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
err |= __clear_user(&frame->uc, offsetof(struct ucontext, uc_mcontext));
err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, set->sig[0]);
err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
+ err |= __save_altstack(&frame->uc.uc_stack, rdusp());
if (err)
goto give_sigsegv;