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alpha: fix osf_wait4() breakage

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kernel_wait4() expects a userland address for status - it's only
rusage that goes as a kernel one (and needs a copyout afterwards)

[ Also, fix the prototype of kernel_wait4() to have that __user
  annotation   - Linus ]

Fixes: 92ebce5ac5 ("osf_wait4: switch to kernel_wait4()")
Cc: [email protected] # v4.13+
Signed-off-by: Al Viro <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Al Viro 2018-07-22 15:07:11 +01:00 • committed by Linus Torvalds
commit f88a333b44
2 changed files with 2 additions and 5 deletions
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5
arch/alpha/kernel/osf_sys.c
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@ -1180,13 +1180,10 @@ SYSCALL_DEFINE2(osf_getrusage, int, who, struct rusage32 __user *, ru)
SYSCALL_DEFINE4(osf_wait4, pid_t, pid, int __user *, ustatus, int, options,
struct rusage32 __user *, ur)
{
unsigned int status = 0;
struct rusage r;
long err = kernel_wait4(pid, &status, options, &r);
long err = kernel_wait4(pid, ustatus, options, &r);
if (err <= 0)
return err;
if (put_user(status, ustatus))
return -EFAULT;
if (!ur)
return err;
if (put_tv_to_tv32(&ur->ru_utime, &r.ru_utime))