From: Kunhoon Baik <knhoon.baik@samsung.com>
Date: Sat, 9 Jul 2016 02:30:19 +0000 (+0900)
Subject: Check phdr for Referencing phdr
X-Git-Tag: submit/tizen/20160711.000426^0
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8abe6f64a90d33e2289762e4001f38a58791e46e;p=platform%2Fcore%2Fsystem%2Fcrash-worker.git

Check phdr for Referencing phdr

Change-Id: I63f07a7506d556de3d4c576fd141a007a34ceb0d
---

diff --git a/src/crash-stack/crash-stack-arm.c b/src/crash-stack/crash-stack-arm.c
index 4edf54f2..e1d69048 100644
--- a/src/crash-stack/crash-stack-arm.c
+++ b/src/crash-stack/crash-stack-arm.c
@@ -75,13 +75,19 @@ Boolean readT (Int32 a, void *v, size_t size)
 	{
 		// get data from segment
 		GElf_Phdr mem;
-		GElf_Phdr *phdr = gelf_getphdr (g_core, segment, &mem);
-		Dwarf_Addr offset_in_segment = a - phdr->p_vaddr;
-		if (offset_in_segment < phdr->p_filesz)
+		GElf_Phdr *phdr;
+		Dwarf_Addr offset_in_segment;
+
+		phdr = gelf_getphdr (g_core, segment, &mem);
+		if (phdr != NULL)
 		{
-			Dwarf_Addr offset_in_file = phdr->p_offset + offset_in_segment;
+			offset_in_segment = a - phdr->p_vaddr;
+			if (offset_in_segment < phdr->p_filesz)
+			{
+				Dwarf_Addr offset_in_file = phdr->p_offset + offset_in_segment;
 
-			data = elf_getdata_rawchunk (g_core, offset_in_file, size, ELF_T_BYTE);
+				data = elf_getdata_rawchunk (g_core, offset_in_file, size, ELF_T_BYTE);
+			}
 		}
 	}