[coreboot-gerrit] Change in ...coreboot[master]: Fix NULL dereference issues found by Klocwork

[Thejaswani Putta (Code Review)]

Thejaswani Putta has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/33625

Change subject: Fix NULL dereference issues found by Klocwork
......................................................................

Fix NULL dereference issues found by Klocwork

Signed-off-by: Thejaswani Putta 
Change-Id: Ia63ab85af610f5d83b5bd6596916a1d4d459adbf

Change-Id: I9ed0fc9b03d9136c582377035cf478d3abf83c41
---
M payloads/libpayload/curses/form/fty_alnum.c
M payloads/libpayload/curses/form/fty_alpha.c
M payloads/libpayload/curses/form/fty_enum.c
M payloads/libpayload/curses/form/fty_int.c
M src/soc/intel/cannonlake/romstage/fsp_params.c
5 files changed, 15 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/25/33625/1

diff --git a/payloads/libpayload/curses/form/fty_alnum.c b/payloads/libpayload/curses/form/fty_alnum.c
index cda23dc..7c4f1bc 100644
--- a/payloads/libpayload/curses/form/fty_alnum.c
+++ b/payloads/libpayload/curses/form/fty_alnum.c
@@ -163,6 +163,8 @@
   unsigned char *bp = (unsigned char *)field_buffer(field, 0);
   bool result = (width < 0);

+  if(bp == NULL)
+    return result;
   Check_CTYPE_Field(result, bp, width, Check_This_Character);
   return (result);
 }
diff --git a/payloads/libpayload/curses/form/fty_alpha.c b/payloads/libpayload/curses/form/fty_alpha.c
index 917a9e0..336658a 100644
--- a/payloads/libpayload/curses/form/fty_alpha.c
+++ b/payloads/libpayload/curses/form/fty_alpha.c
@@ -163,6 +163,8 @@
   unsigned char *bp = (unsigned char *)field_buffer(field, 0);
   bool result = (width < 0);

+  if(bp == NULL)
+    return result;
   Check_CTYPE_Field(result, bp, width, Check_This_Character);
   return (result);
 }
diff --git a/payloads/libpayload/curses/form/fty_enum.c b/payloads/libpayload/curses/form/fty_enum.c
index 2fd96f0..4d1edb1 100644
--- a/payloads/libpayload/curses/form/fty_enum.c
+++ b/payloads/libpayload/curses/form/fty_enum.c
@@ -293,6 +293,8 @@
   char *s, *t, *p;
   int res;

+  if(bp == NULL)
+    return FALSE;
   while (kwds && (s = (*kwds++)))
     {
       if ((res = Compare((unsigned char *)s, bp, ccase)) != NOMATCH)
@@ -348,6 +350,9 @@
   int cnt = args->count;
   unsigned char *bp = (unsigned char *)field_buffer(field, 0);

+  if (bp == NULL)
+   return FALSE;
+
   if (kwds)
     {
       while (cnt--)
@@ -386,6 +391,8 @@
   bool ccase = args->checkcase;
   unsigned char *bp = (unsigned char *)field_buffer(field, 0);

+  if(bp == NULL)
+    return FALSE;
   if (kwds)
     {
       while (cnt--)
diff --git a/payloads/libpayload/curses/form/fty_int.c b/payloads/libpayload/curses/form/fty_int.c
index 0eddedf..e9ea995 100644
--- a/payloads/libpayload/curses/form/fty_int.c
+++ b/payloads/libpayload/curses/form/fty_int.c
@@ -172,6 +172,8 @@
   char buf[100];
   bool result = FALSE;

+  if( bp == NULL)
+    return result;
   while (*bp && *bp == ' ')
     bp++;
   if (*bp)
diff --git a/src/soc/intel/cannonlake/romstage/fsp_params.c b/src/soc/intel/cannonlake/romstage/fsp_params.c
index 77bad8f..c47d193 100644
--- a/src/soc/intel/cannonlake/romstage/fsp_params.c
+++ b/src/soc/intel/cannonlake/romstage/fsp_params.c
@@ -102,7 +102,8 @@
 {
    const struct device *dev = dev_find_slot(0, PCH_DEVFN_LPC);
    const struct device *smbus = dev_find_slot(0, PCH_DEVFN_SMBUS);
-	assert(dev != NULL);
+	if (dev == NULL)
+		return;
    const config_t *config = dev->chip_info;
    FSP_M_CONFIG *m_cfg = &mupd->FspmConfig;
    FSP_M_TEST_CONFIG *tconfig = &mupd->FspmTestConfig;