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-rw-r--r--fs/proc/base.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c
index c3af15e..daba136 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -775,7 +775,8 @@ static ssize_t mem_read(struct file * file, char __user * buf,
if (!task)
goto out_no_task;
- if (check_mem_permission(task))
+ ret = check_mem_permission(task);
+ if (ret)
goto out;
ret = -ENOMEM;
@@ -845,7 +846,8 @@ static ssize_t mem_write(struct file * file, const char __user *buf,
if (!task)
goto out_no_task;
- if (check_mem_permission(task))
+ copied = check_mem_permission(task);
+ if (copied)
goto out;
copied = -ENOMEM;
@@ -917,6 +919,7 @@ static ssize_t environ_read(struct file *file, char __user *buf,
if (!task)
goto out_no_task;
+ ret = -EPERM;
if (!ptrace_may_access(task, PTRACE_MODE_READ))
goto out;