11 Dec
2024
11 Dec
'24
8:45 p.m.
On Wed, Dec 11, 2024 at 04:32:49AM +0000, Matthew Wilcox (Oracle) wrote:
If the caller of vmap() specifies VM_MAP_PUT_PAGES (currently only the i915 driver), we will decrement nr_vmalloc_pages in vfree() without ever incrementing it. Check the flag before decrementing the counter.
Fixes: b944afc9d64d (mm: add a VM_MAP_PUT_PAGES flag for vmap) Cc: stable@vger.kernel.org Signed-off-by: Matthew Wilcox (Oracle) willy@infradead.org
Reviewed-by: Shakeel Butt shakeel.butt@linux.dev