cryptocop: fix assertion in create_output_descriptors()
size_t desc_len cannot be less than 0, test before the subtraction. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -628,9 +628,9 @@ static int create_output_descriptors(struct cryptocop_operation *operation, int
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cdesc->dma_descr->buf = (char*)virt_to_phys(operation->tfrm_op.indata[*iniov_ix].iov_base + *iniov_offset);
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cdesc->dma_descr->after = cdesc->dma_descr->buf + dlength;
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assert(desc_len >= dlength);
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desc_len -= dlength;
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*iniov_offset += dlength;
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assert(desc_len >= 0);
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if (*iniov_offset >= operation->tfrm_op.indata[*iniov_ix].iov_len) {
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*iniov_offset = 0;
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++(*iniov_ix);
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