diff options
| -rw-r--r-- | mm/shmem.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/mm/shmem.c b/mm/shmem.c index 67a3f3b05fb2..7f41a24ed382 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -3476,6 +3476,10 @@ static int shmem_reconfigure(struct fs_context *fc) raw_spin_lock(&sbinfo->stat_lock); inodes = sbinfo->max_inodes - sbinfo->free_inodes; + if (ctx->blocks > S64_MAX) { + err = "Number of blocks too large"; + goto out; + } if ((ctx->seen & SHMEM_SEEN_BLOCKS) && ctx->blocks) { if (!sbinfo->max_blocks) { err = "Cannot retroactively limit size"; |