Hello Mark A. Allyn,
This is a semi-automatic email about new static checker warnings.
The patch 9196dc1129fb: "staging: sep: reworked crypto layer" from
Feb 10, 2012, leads to the following static checker complaint:
drivers/staging/sep/sep_crypto.c:2272 sep_hash_update()
warn: variable dereferenced before check 'ta_ctx->src_sg' (see line 2270)
drivers/staging/sep/sep_crypto.c
2269
2270 src_ptr = sg_virt(ta_ctx->src_sg);
^^^^^^^^^^^^^^
Dereferenced inside sg_virt() function (new).
2271
2272 if ((!req->nbytes) || (!ta_ctx->src_sg)) {
^^^^^^^^^^^^^^
Checked for NULL (new).
2273 /* null data */
2274 src_ptr = NULL;
Same thing in the sep_hash_digest() function.
drivers/staging/sep/sep_crypto.c:2505 sep_hash_digest() warn:
variable dereferenced before check 'ta_ctx->src_sg' (see line 2503)
These is sort of an older warning, and I haven't released the Smatch
changes to detect it publically yet.
regards,
dan carpenter
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