diff options
| -rw-r--r-- | mm/swapfile.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/mm/swapfile.c b/mm/swapfile.c index ba19430dd4ea..fab99d67026a 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -3542,6 +3542,10 @@ static int __swap_duplicate(swp_entry_t entry, unsigned char usage, int nr) int err, i; si = swp_swap_info(entry); + if (WARN_ON_ONCE(!si)) { + pr_err("%s%08lx\n", Bad_file, entry.val); + return -EINVAL; + } offset = swp_offset(entry); VM_WARN_ON(nr > SWAPFILE_CLUSTER - offset % SWAPFILE_CLUSTER); |