HIGHMEM pages may not be mapped so we must kmap them before accessing. This resolves a random OOPs error that was showing up during OpenSSL SHA tests. Signed-off-by: Joel Fernandes <joelf@xxxxxx> --- drivers/crypto/omap-sham.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c index 8bdde57..fcf6562 100644 --- a/drivers/crypto/omap-sham.c +++ b/drivers/crypto/omap-sham.c @@ -636,11 +636,21 @@ static size_t omap_sham_append_buffer(struct omap_sham_reqctx *ctx, static size_t omap_sham_append_sg(struct omap_sham_reqctx *ctx) { size_t count; + const u8 *vaddr; while (ctx->sg) { + if (PageHighMem(sg_page(ctx->sg))) + vaddr = kmap_atomic(sg_page(ctx->sg)); + else + vaddr = sg_virt(ctx->sg); + count = omap_sham_append_buffer(ctx, - sg_virt(ctx->sg) + ctx->offset, + vaddr + ctx->offset, ctx->sg->length - ctx->offset); + + if (PageHighMem(sg_page(ctx->sg))) + kunmap_atomic((void *)vaddr); + if (!count) break; ctx->offset += count; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html