do_rt_sigreturn uses an uninitialised local variable instead of fetching
the old signal mask directly from the signal frame when restoring the mask,
so the signal mask is undefined after do_rt_sigreturn. As the signal
frame data is in target-endian order, target_to_host_sigset instead of
target_to_host_sigset_internal is required.
do_sigreturn is correct in using target_to_host_sigset_internal, because
get_user already did the endianness conversion.
Signed-off-by: Michael Karcher <karc...@physik.fu-berlin.de>
---
linux-user/signal.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/linux-user/signal.c b/linux-user/signal.c
index e03ed60..13f9142 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -5258,14 +5258,13 @@ long do_rt_sigreturn(CPUM68KState *env)
{
struct target_rt_sigframe *frame;
abi_ulong frame_addr = env->aregs[7] - 4;
- target_sigset_t target_set;
sigset_t set;
int d0;
if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1))
goto badframe;
- target_to_host_sigset_internal(&set, &target_set);
+ target_to_host_sigset(&set, &frame->uc.tuc_sigmask);
do_sigprocmask(SIG_SETMASK, &set, NULL);
/* restore registers */
--
2.1.4
