[PATCH 0/2] elf2dmp: fixes of code analysis warnings

[PATCH 0/2] elf2dmp: fixes of code analysis warnings

[Viktor Prutyanov]

This series is dedicated to fixes of Coverity warnings.

Viktor Prutyanov (2):
  elf2dmp: limit print length for sign_rsds
  elf2dmp: check array bounds in pdb_get_file_size

 contrib/elf2dmp/main.c |  2 +-
 contrib/elf2dmp/pdb.c  | 13 +++++++++----
 2 files changed, 10 insertions(+), 5 deletions(-)

-- 
2.21.0

[PATCH 1/2] elf2dmp: limit print length for sign_rsds

[Viktor Prutyanov]

From: Viktor Prutyanov <viktor.prutyanov@phystech.edu>

String sign_rsds isn't terminated, so the print length must be limited.

Signed-off-by: Viktor Prutyanov <viktor@daynix.com>
---
 contrib/elf2dmp/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/contrib/elf2dmp/main.c b/contrib/elf2dmp/main.c
index 5db163bdbe..6de5c9808e 100644
--- a/contrib/elf2dmp/main.c
+++ b/contrib/elf2dmp/main.c
@@ -478,7 +478,7 @@ static bool pe_check_pdb_name(uint64_t base, void *start_addr,
     }
 
     if (memcmp(&rsds->Signature, sign_rsds, sizeof(sign_rsds))) {
-        eprintf("CodeView signature is \'%.4s\', \'%s\' expected\n",
+        eprintf("CodeView signature is \'%.4s\', \'%.4s\' expected\n",
                 rsds->Signature, sign_rsds);
         return false;
     }
-- 
2.21.0

[PATCH 2/2] elf2dmp: check array bounds in pdb_get_file_size

[Viktor Prutyanov]

Index in file_size array must be checked against num_files, because the
entries we are looking for may be absent in the PDB.

Signed-off-by: Viktor Prutyanov <viktor@daynix.com>
---
 contrib/elf2dmp/pdb.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/contrib/elf2dmp/pdb.c b/contrib/elf2dmp/pdb.c
index 6ca5086f02..8e3c18c82f 100644
--- a/contrib/elf2dmp/pdb.c
+++ b/contrib/elf2dmp/pdb.c
@@ -25,6 +25,10 @@
 
 static uint32_t pdb_get_file_size(const struct pdb_reader *r, unsigned idx)
 {
+    if (idx >= r->ds.toc->num_files) {
+        return 0;
+    }
+
     return r->ds.toc->file_size[idx];
 }
 
@@ -159,16 +163,17 @@ static void *pdb_ds_read_file(struct pdb_reader* r, uint32_t file_number)
 
 static int pdb_init_segments(struct pdb_reader *r)
 {
-    char *segs;
     unsigned stream_idx = r->segments;
 
-    segs = pdb_ds_read_file(r, stream_idx);
-    if (!segs) {
+    r->segs = pdb_ds_read_file(r, stream_idx);
+    if (!r->segs) {
         return 1;
     }
 
-    r->segs = segs;
     r->segs_size = pdb_get_file_size(r, stream_idx);
+    if (!r->segs_size) {
+        return 1;
+    }
 
     return 0;
 }
-- 
2.21.0