diff mbox series

[PULL,3/8] linux-user: Fix sched_getaffinity mask size

Message ID 20180219171037.24539-4-laurent@vivier.eu
State New
Headers show
Series [PULL,1/8] linux-user: Implement ioctl cmd TIOCGPTPEER | expand

Commit Message

Laurent Vivier Feb. 19, 2018, 5:10 p.m. UTC 
From: Samuel Thibault <samuel.thibault@ens-lyon.org>

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 <samuel.thibault@ens-lyon.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180211174704.27441-1-samuel.thibault@ens-lyon.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
---
 linux-user/syscall.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
diff mbox series

Patch

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;