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cryptocop: fix assertion in create_output_descriptors()

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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>
This commit is contained in:
Roel Kluin 2010-03-05 13:42:32 -08:00 committed by Linus Torvalds
parent ba875ba6b7
commit cda1c5af26
1 changed files with 1 additions and 1 deletions
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arch/cris/arch-v32/drivers/cryptocop.c
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@ -628,9 +628,9 @@ static int create_output_descriptors(struct cryptocop_operation *operation, int
cdesc->dma_descr->buf = (char*)virt_to_phys(operation->tfrm_op.indata[*iniov_ix].iov_base + *iniov_offset);
cdesc->dma_descr->after = cdesc->dma_descr->buf + dlength;
assert(desc_len >= dlength);
desc_len -= dlength;
*iniov_offset += dlength;
assert(desc_len >= 0);
if (*iniov_offset >= operation->tfrm_op.indata[*iniov_ix].iov_len) {
*iniov_offset = 0;
++(*iniov_ix);