Gdbserver Input/output Error
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Gdb Cannot Insert Breakpoint Error Accessing Memory
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Gdb Cannot Insert Breakpoint 0
up vote 4 down vote favorite 1 I'm trying to debug an android app that call native code to do some GL rendering. The native code is existing code that I'm trying to port (and that I don't really know that well). I've got the existing code compiling, linking, and installing correctly, and I've got some native functions that call in to that code that are being
Error In Re-setting Breakpoint 1: Cannot Access Memory At Address
correctly called from my Java code. I'm getting a segfault that I'm trying to track down, and having some problems getting gdb to set a breakpoint in the program. This is on windows XP with Cygwin - and I should probably mention I'm still learning gdb. I started with the directions at http://honeypod.blogspot.com/2008/01/debug-native-application-for-android.html; here's what I'm currently doing. Start the app in the emulator. In a cmd prompt: > adb forward tcp:1234 tcp:1234 > adb shell # gdbserver localhost:1234 --attach 2120 gdbserver localhost:1234 --attach 2120 Attached; pid = 2120 Listening on port 1234 In a cygwin shell: arm-eabi-4.2.1/bin/arm-eabi-gdb.exe out/apps/app-android/libDM.so GNU gdb 6.6 Copyright (C) 2006 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "--host=i686-pc-cygwin --target=arm-elf-linux"... (gdb) target remote localhost:1234 Remote debugging using localhost:1234 warning: shared library handler failed to enable breakpoint 0xafe0da04 in AppRefCounted::unref () at ../../stlport/stl/_iosfwd.h:39 39 class basic_ostream; Current language: auto; currently c++ (gdb) b Java_com_app_AppRenderer_onCreate Breakpoint 1 at 0xafff1b1a: fil
Bug8953 - breakpoint (Error accessing memory address) Summary: breakpoint (Error accessing memory address) Status: ASSIGNED Alias: None Product: gdb Classification: warning cannot insert breakpoint 1 Unclassified Component: breakpoints (show other bugs) Version: 6.3 Importance: P2 critical Target
Gdb Cannot Access Memory At Address
Milestone: --- Assignee: Not yet assigned to anyone URL: Keywords: Depends on: Blocks: Reported: 2005-01-20 02:28 UTC by desimoi Modified: 2008-12-18 19:42 UTC (History) CC List: 4 users (show) gdb-prs jacopo.desimoi kettenis mark.kettenis See Also: Host: Target: Build: Last reconfirmed: Attachments Add an attachment (proposed patch, http://stackoverflow.com/questions/2276797/gdb-input-output-error-remote-debugging-to-android testcase, etc.) Note You need to log in before you can comment on or make changes to this bug. Description desimoi 2005-01-20 02:28:00 UTC [Converted from Gnats 1848] I can't insert a breakpoint in any program, I always get an error such as: Error accessing memory address 0xblabla: Input/Output Error Release: GNU gdb 6.3 and previous Environment: Gentoo 2004.3 Linux https://sourceware.org/bugzilla/show_bug.cgi?id=8953 on amd64 Kernel 2.6.9-gentoo-r9 Comment 1 mark.kettenis 2005-01-22 15:57:16 UTC From: Mark Kettenis
Sign in Pricing Blog Support Search GitHub This repository Watch 254 Star 3,366 Fork 767 radare/radare2 Code Issues 779 Pull requests 5 Projects 0 Wiki Pulse Graphs New issue I/O errors when connecting https://github.com/radare/radare2/issues/1700 to ARM gdbserver #1700 Open msftsecurityteam opened this Issue Nov 18, 2014 · 20 comments Projects None yet Labels ARM blocker debug-info regression wrkshp Milestone 1.0.0 Assignees XVilka 5 participants msftsecurityteam commented Nov 18, 2014 Hi, I am running gdbserver built with gdb 7.5, and when trying to connect to a remote gdbserver on an ARM machine I get the following: ptrace: Input/output error. input_interrupt, count gdb cannot = 1 c = 36 ('$') ptrace: Input/output error. input_interrupt, count = 1 c = 36 ('$') ptrace: Input/output error. input_interrupt, count = 1 c = 36 ('$') ptrace: Input/output error. input_interrupt, count = 1 c = 36 ('$') input_interrupt, count = 1 c = 43 ('+') input_interrupt, count = 1 c = 36 ('$') input_interrupt, count = 1 c = 103 ('g') input_interrupt, count = 1 c = cannot insert breakpoint 35 ('#') input_interrupt, count = 1 c = 54 ('6') input_interrupt, count = 1 c = 55 ('7') input_interrupt, count = 1 c = 36 ('$') input_interrupt, count = 1 c = 103 ('g') input_interrupt, count = 1 c = 35 ('#') input_interrupt, count = 1 c = 54 ('6') input_interrupt, count = 1 c = 55 ('7') input_interrupt, count = 1 c = 36 ('$') input_interrupt, count = 1 c = 118 ('v') input_interrupt, count = 1 c = 67 ('C') and this repeats on the gdbserver side. Radare2 side shows: [0x4041fd6c]> dcs Running child until next syscall r_debug_reg: error reading registers r_debug_reg: error reading registers r_debug_reg: error reading registers r_debug_reg: error reading registers r_debug_reg: error reading registers r_debug_reg: error reading registers r_debug_reg: error reading registers r_debug_reg: error reading registers Owner radare commented Nov 18, 2014 paste the line you are using to connect to that gdb … On 11/18/2014 09:45 PM, msftsecurityteam wrote: Hi, I am running gdbserver built with gdb 7.5, and when trying to connect to a remote gdbserver on an ARM machine I get the following: ptrace: Input/output error. input_interrupt, count = 1 c = 36 ('$') ptrace: Input/output error. input_interrupt, count = 1 c = 36 ('$') ptrace: Input/output error. inp