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crypto: cpt - don't sleep of CRYPTO_TFM_REQ_MAY_SLEEP was not specified

Browse source 
commit 9e27c99104 upstream.

There is this call chain:
cvm_encrypt -> cvm_enc_dec -> cptvf_do_request -> process_request -> kzalloc
where we call sleeping allocator function even if CRYPTO_TFM_REQ_MAY_SLEEP
was not specified.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org	# v4.11+
Fixes: c694b23329 ("crypto: cavium - Add the Virtual Function driver for CPT")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mikulas Patocka 2020-06-17 09:48:56 -04:00 committed by Greg Kroah-Hartman
parent 99e69b921d
commit a2c4136587
3 changed files with 9 additions and 6 deletions
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1
drivers/crypto/cavium/cpt/cptvf_algs.c
View file

@ -205,6 +205,7 @@ static inline int cvm_enc_dec(struct ablkcipher_request *req, u32 enc)
int status;
memset(req_info, 0, sizeof(struct cpt_request_info));
req_info->may_sleep = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) != 0;
memset(fctx, 0, sizeof(struct fc_context));
create_input_list(req, enc, enc_iv_len);
create_output_list(req, enc_iv_len);

12
drivers/crypto/cavium/cpt/cptvf_reqmanager.c
View file

@ -136,7 +136,7 @@ static inline int setup_sgio_list(struct cpt_vf *cptvf,
/* Setup gather (input) components */
g_sz_bytes = ((req->incnt + 3) / 4) * sizeof(struct sglist_component);
info->gather_components = kzalloc(g_sz_bytes, GFP_KERNEL);
info->gather_components = kzalloc(g_sz_bytes, req->may_sleep ? GFP_KERNEL : GFP_ATOMIC);
if (!info->gather_components) {
ret = -ENOMEM;
goto scatter_gather_clean;
@ -153,7 +153,7 @@ static inline int setup_sgio_list(struct cpt_vf *cptvf,
/* Setup scatter (output) components */
s_sz_bytes = ((req->outcnt + 3) / 4) * sizeof(struct sglist_component);
info->scatter_components = kzalloc(s_sz_bytes, GFP_KERNEL);
info->scatter_components = kzalloc(s_sz_bytes, req->may_sleep ? GFP_KERNEL : GFP_ATOMIC);
if (!info->scatter_components) {
ret = -ENOMEM;
goto scatter_gather_clean;
@ -170,7 +170,7 @@ static inline int setup_sgio_list(struct cpt_vf *cptvf,
/* Create and initialize DPTR */
info->dlen = g_sz_bytes + s_sz_bytes + SG_LIST_HDR_SIZE;
info->in_buffer = kzalloc(info->dlen, GFP_KERNEL);
info->in_buffer = kzalloc(info->dlen, req->may_sleep ? GFP_KERNEL : GFP_ATOMIC);
if (!info->in_buffer) {
ret = -ENOMEM;
goto scatter_gather_clean;
@ -198,7 +198,7 @@ static inline int setup_sgio_list(struct cpt_vf *cptvf,
}
/* Create and initialize RPTR */
info->out_buffer = kzalloc(COMPLETION_CODE_SIZE, GFP_KERNEL);
info->out_buffer = kzalloc(COMPLETION_CODE_SIZE, req->may_sleep ? GFP_KERNEL : GFP_ATOMIC);
if (!info->out_buffer) {
ret = -ENOMEM;
goto scatter_gather_clean;
@ -434,7 +434,7 @@ int process_request(struct cpt_vf *cptvf, struct cpt_request_info *req)
struct cpt_vq_command vq_cmd;
union cpt_inst_s cptinst;
info = kzalloc(sizeof(*info), GFP_KERNEL);
info = kzalloc(sizeof(*info), req->may_sleep ? GFP_KERNEL : GFP_ATOMIC);
if (unlikely(!info)) {
dev_err(&pdev->dev, "Unable to allocate memory for info_buffer\n");
return -ENOMEM;
@ -456,7 +456,7 @@ int process_request(struct cpt_vf *cptvf, struct cpt_request_info *req)
* Get buffer for union cpt_res_s response
* structure and its physical address
*/
info->completion_addr = kzalloc(sizeof(union cpt_res_s), GFP_KERNEL);
info->completion_addr = kzalloc(sizeof(union cpt_res_s), req->may_sleep ? GFP_KERNEL : GFP_ATOMIC);
if (unlikely(!info->completion_addr)) {
dev_err(&pdev->dev, "Unable to allocate memory for completion_addr\n");
ret = -ENOMEM;

2
drivers/crypto/cavium/cpt/request_manager.h
View file

@ -65,6 +65,8 @@ struct cpt_request_info {
union ctrl_info ctrl; /* User control information */
struct cptvf_request req; /* Request Information (Core specific) */
bool may_sleep;
struct buf_ptr in[MAX_BUF_CNT];
struct buf_ptr out[MAX_BUF_CNT];