From: Peter Maydell <peter.mayd...@linaro.org>
Enforce the same restriction on the size of the sigset passed to
pselect6 as the Linux kernel does. This is both correct and silences
a gcc 4.6 warning about a write-only variable.
Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
Signed-off-by: Riku Voipio <riku.voi...@linaro.org>
---
linux-user/syscall.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index e2f356b..90f6789 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -5699,6 +5699,11 @@ abi_long do_syscall(void *cpu_env, int num, abi_long
arg1,
if (arg_sigset) {
sig.set = &set;
+ if (arg_sigsize != sizeof(*target_sigset)) {
+ /* Like the kernel, we enforce correct size sigsets */
+ ret = -TARGET_EINVAL;
+ goto fail;
+ }
target_sigset = lock_user(VERIFY_READ, arg_sigset,
sizeof(*target_sigset), 1);
if (!target_sigset) {
--
1.7.4.1
