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mm/memremap: avoid calling kasan_remove_zero_shadow() for device private memory
For device private memory, we do not create a linear mapping for the memory because the device memory is un-accessible. Thus we do not add kasan zero shadow for it. So it's unnecessary to do kasan_remove_zero_shadow() for it. Link: https://lkml.kernel.org/r/20220126092602.1425-1-linmiaohe@huawei.com Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Reviewed-by: Muchun Song <songmuchun@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -282,7 +282,8 @@ static int pagemap_range(struct dev_pagemap *pgmap, struct mhp_params *params,
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return 0;
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err_add_memory:
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kasan_remove_zero_shadow(__va(range->start), range_len(range));
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if (!is_private)
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kasan_remove_zero_shadow(__va(range->start), range_len(range));
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err_kasan:
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untrack_pfn(NULL, PHYS_PFN(range->start), range_len(range));
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err_pfn_remap:
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