Messages in this thread | | | Date | Wed, 1 Jul 2020 16:24:27 +0100 | From | Matthew Wilcox <> | Subject | Re: [PATCH v3] mm, slab: Check GFP_SLAB_BUG_MASK before alloc_pages in kmalloc_order |
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On Wed, Jul 01, 2020 at 03:16:45PM +0000, Long Li wrote: > kmalloc cannot allocate memory from HIGHMEM. Allocating large amounts > of memory currently bypasses the check and will simply leak the memory > when page_address() returns NULL. To fix this, factor the > GFP_SLAB_BUG_MASK check out of slab & slub, and call it from > kmalloc_order() as well. In order to make the code clear, the warning > message is put in one place. > > Signed-off-by: Long Li <lonuxli.64@gmail.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
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