From 5fdefcf808a6d70a26e4c536cf0a0acad9b0fff3 Mon Sep 17 00:00:00 2001 From: Samuel Thibault Date: Sun, 11 Feb 2018 18:47:04 +0100 Subject: [PATCH] linux-user: Fix sched_getaffinity mask size We properly computed the capped mask size to be put to the application buffer, but didn't actually used it. Also, we need to return the capped mask size instead of 0 on success. Signed-off-by: Samuel Thibault Reviewed-by: Laurent Vivier Message-Id: <20180211174704.27441-1-samuel.thibault@ens-lyon.org> Signed-off-by: Laurent Vivier --- linux-user/syscall.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/linux-user/syscall.c b/linux-user/syscall.c index effc3a0881..e24f43c4a2 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -10502,7 +10502,9 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1, ret = arg2; } - ret = host_to_target_cpu_mask(mask, mask_size, arg3, arg2); + if (host_to_target_cpu_mask(mask, mask_size, arg3, ret)) { + goto efault; + } } } break; -- 2.30.2