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CIFS: Pass page offset for calculating signature

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When calculating signature for the packet, it needs to read into the
correct page offset for the data.

Signed-off-by: Long Li <longli@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Long Li 2018-05-30 12:48:03 -07:00 committed by Steve French
parent 7cf20bce77
commit 4c0d2a5a64
1 changed files with 5 additions and 4 deletions
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9
fs/cifs/cifsencrypt.c
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@ -66,11 +66,12 @@ int __cifs_calc_signature(struct smb_rqst *rqst,
/* now hash over the rq_pages array */
for (i = 0; i < rqst->rq_npages; i++) {
void *kaddr = kmap(rqst->rq_pages[i]);
size_t len = rqst->rq_pagesz;
void *kaddr;
unsigned int len, offset;
if (i == rqst->rq_npages - 1)
len = rqst->rq_tailsz;
rqst_page_get_length(rqst, i, &len, &offset);
kaddr = (char *) kmap(rqst->rq_pages[i]) + offset;
crypto_shash_update(shash, kaddr, len);