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auxv: require the target to be tracable (or yourself)

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same as for environ, except that we didn't do any checks to
prevent access after suid execve

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2011-02-15 22:52:11 -05:00
parent d6f64b89d7
commit 2fadaef412
1 changed files with 3 additions and 3 deletions
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6
fs/proc/base.c
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@ -281,9 +281,9 @@ out:
static int proc_pid_auxv(struct task_struct *task, char *buffer) static int proc_pid_auxv(struct task_struct *task, char *buffer)
{ {
int res = 0; struct mm_struct *mm = mm_for_maps(task);
struct mm_struct *mm = get_task_mm(task); int res = PTR_ERR(mm);
if (mm) { if (mm && !IS_ERR(mm)) {
unsigned int nwords = 0; unsigned int nwords = 0;
do { do {
nwords += 2; nwords += 2;