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Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

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The MSCC bug fix in 'net' had to be slightly adjusted because the
register accesses are done slightly differently in net-next.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2020-05-24 13:47:27 -07:00
parent 316107119f 98790bbac4
commit 13209a8f73
422 changed files with 3508 additions and 1711 deletions
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17
kernel/bpf/syscall.c
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@@ -627,9 +627,20 @@ static int bpf_map_mmap(struct file *filp, struct vm_area_struct *vma)
mutex_lock(&map->freeze_mutex);
if ((vma->vm_flags & VM_WRITE) && map->frozen) {
err = -EPERM;
goto out;
if (vma->vm_flags & VM_WRITE) {
if (map->frozen) {
err = -EPERM;
goto out;
}
/* map is meant to be read-only, so do not allow mapping as
* writable, because it's possible to leak a writable page
* reference and allows user-space to still modify it after
* freezing, while verifier will assume contents do not change
*/
if (map->map_flags & BPF_F_RDONLY_PROG) {
err = -EACCES;
goto out;
}
}
/* set default open/close callbacks */