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[PATCH] Fix for segmentation fault
- From: Srinivasa D S <srinivasa at in dot ibm dot com>
- To: SystemTAP <systemtap at sources dot redhat dot com>, Roland McGrath <roland at redhat dot com>
- Date: Thu, 24 Apr 2008 12:18:22 +0530
- Subject: [PATCH] Fix for segmentation fault
- Organization: IBM
Hi
When I executed latest systemtap on x86_64, I got segmentation
fault. On analysis, I found
........................................................
Loaded symbols for /lib64/libpthread.so.0
Reading symbols from /lib64/ld-linux-x86-64.so.2...done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
Core was generated by `./stap -vvv -e probe kernel.function("sys_open")
"hi");}
'.
Program terminated with signal 11, Segmentation fault.
#0 0x00007f470e8a31c6 in report_kernel (dwfl=0xf5f3e0,
release=<value optimized out>, predicate=0)
at /home/systemtap/btils/elfutils-0.131/libdwfl/linux-kernel-module
197 mod->e_type = ET_DYN;
Attaching fix for the problem.
Signed-off-by: Srinivasa DS <srinivasa@in.ibm.com>
---
libdwfl/linux-kernel-modules.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: elfutils-0.131/libdwfl/linux-kernel-modules.c
===================================================================
--- elfutils-0.131.orig/libdwfl/linux-kernel-modules.c
+++ elfutils-0.131/libdwfl/linux-kernel-modules.c
@@ -191,7 +191,7 @@ report_kernel (Dwfl *dwfl, const char **
Dwfl_Module *mod = INTUSE(dwfl_report_elf) (dwfl, KERNEL_MODNAME,
fname, fd, 0);
if (mod == NULL)
- result = -1;
+ return -1;
/* The kernel is ET_EXEC, but always treat it as relocatable. */
mod->e_type = ET_DYN;