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qcacmn: Use global variable for cpumask

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Local variable is used to store cpumask to send it to
irq_set_affinity_hint and qdf_dev_set_irq_affinity APIs.
This memory is used by the kernel later outside the
current contect resulting in invalid memory access.

Fix this by using global variables to store cpumask.

Change-Id: I086f40bf1b3499d2c2ccb1ce18140b2dc2761d04
CRs-Fixed: 2373548
This commit is contained in:
Rakshith Suresh Patkar
2018-12-28 15:29:10 +05:30
committed by nshrivas
parent d2dad4b5bd
commit ee84fbeea2
4 changed files with 13 additions and 12 deletions
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1
hif/inc/hif.h
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@@ -190,6 +190,7 @@ struct qca_napi_info {
uint8_t id;
uint8_t cpu;
int irq;
cpumask_t cpumask;
struct qca_napi_stat stats[NR_CPUS];
#ifdef RECEIVE_OFFLOAD
/* will only be present for data rx CE's */

5
hif/src/hif_exec.h
View File

@@ -1,5 +1,5 @@
/*
* Copyright (c) 2017 The Linux Foundation. All rights reserved.
* Copyright (c) 2017-2018 The Linux Foundation. All rights reserved.
*
* Permission to use, copy, modify, and/or distribute this software for
* any purpose with or without fee is hereby granted, provided that the
@@ -20,7 +20,7 @@
#define __HIF_EXEC_H__
#include <hif.h>
#include <linux/cpumask.h>
struct hif_exec_context;
@@ -55,6 +55,7 @@ struct hif_exec_context {
uint32_t numirq;
uint32_t irq[HIF_MAX_GRP_IRQ];
uint32_t os_irq[HIF_MAX_GRP_IRQ];
cpumask_t cpumask;
uint32_t grp_id;
uint32_t scale_bin_shift;
const char *context_name;

7
hif/src/hif_irq_affinity.c
View File

@@ -249,22 +249,21 @@ static int hncm_exec_migrate_to(struct qca_napi_data *napid, uint8_t ctx_id,
int rc = 0;
int status = 0;
int ind;
cpumask_t cpumask;
NAPI_DEBUG("-->%s(napi_cd=%d, didx=%d)", __func__, napi_ce, didx);
cpumask.bits[0] = (1 << didx);
exec_ctx = hif_exec_get_ctx(&napid->hif_softc->osc, ctx_id);
if (exec_ctx == NULL)
return -EINVAL;
exec_ctx->cpumask.bits[0] = (1 << didx);
for (ind = 0; ind < exec_ctx->numirq; ind++) {
if (exec_ctx->os_irq[ind]) {
irq_modify_status(exec_ctx->os_irq[ind],
IRQ_NO_BALANCING, 0);
rc = irq_set_affinity_hint(exec_ctx->os_irq[ind],
&cpumask);
&exec_ctx->cpumask);
if (rc)
status = rc;
}

12
hif/src/hif_napi.c
View File

@@ -814,7 +814,6 @@ bool hif_napi_correct_cpu(struct qca_napi_info *napi_info)
{
bool right_cpu = true;
int rc = 0;
cpumask_t cpumask;
int cpu;
struct qca_napi_data *napid;
QDF_STATUS ret;
@@ -830,12 +829,12 @@ bool hif_napi_correct_cpu(struct qca_napi_info *napi_info)
right_cpu = false;
NAPI_DEBUG("interrupt on wrong CPU, correcting");
cpumask.bits[0] = (0x01 << napi_info->cpu);
napi_info->cpumask.bits[0] = (0x01 << napi_info->cpu);
irq_modify_status(napi_info->irq, IRQ_NO_BALANCING, 0);
ret = qdf_dev_set_irq_affinity(napi_info->irq,
(struct qdf_cpu_mask *)
&cpumask);
&napi_info->cpumask);
rc = qdf_status_to_os_return(ret);
irq_modify_status(napi_info->irq, 0, IRQ_NO_BALANCING);
@@ -1472,18 +1471,19 @@ static int hncm_migrate_to(struct qca_napi_data *napid,
int didx)
{
int rc = 0;
cpumask_t cpumask;
QDF_STATUS status;
NAPI_DEBUG("-->%s(napi_cd=%d, didx=%d)", __func__, napi_ce, didx);
cpumask.bits[0] = (1 << didx);
if (!napid->napis[napi_ce])
return -EINVAL;
napid->napis[napi_ce]->cpumask.bits[0] = (1 << didx);
irq_modify_status(napid->napis[napi_ce]->irq, IRQ_NO_BALANCING, 0);
status = qdf_dev_set_irq_affinity(napid->napis[napi_ce]->irq,
(struct qdf_cpu_mask *)&cpumask);
(struct qdf_cpu_mask *)
&napid->napis[napi_ce]->cpumask);
rc = qdf_status_to_os_return(status);
/* unmark the napis bitmap in the cpu table */