Hello all,
I'm trying to use KGDB on a target machine + GDB on the host,
connected via ethernet. Regarding KGDB, I'm having problems because I
can't boot the target machine into KGDB. When I boot it, it boots
normally, i. e. it ends up entering the OS. What have I done so far:
I have downloaded kernel 2.6.32.4 from www.kernel.org and prepared the
compilation with menuconfig, enabling the KGDB otions. After that,
I've compiled the kernel using the "sudo make && sudo make modules &&
sudo make modules_install && sudo make install" commands. After that,
If I boot the newly-compiled kernel, KGDB won't start, i. e., the
kernel boots till the end as usual, and enters the OS, so I don't see
the expected "Waiting for connection from remote gdb..." message.
1. My KGDB .config debugging symbols:
[...]
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_KGDB=y
CONFIG_KGDB_SERIAL_CONSOLE=y
CONFIG_KGDB_TESTS=y
# CONFIG_KGDB_TESTS_ON_BOOT is not set
[...]
2. My grub.conf (remember I'm planning to use an ethernet connection):
[...]
title CentOS (2.6.32.4)
root (hd0,0)
kernel /vmlinuz-2.6.32.4 ro root=/dev/mapper/vg_centos6-lv_root
rd_NO_LUKS LANG=en_US.UTF-8 rd_LVM_LV=vg_centos6/lv_swap rd_NO_MD
SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=pt-latin1
rd_LVM_LV=vg_centos6/lv_root rd_NO_DM rhgb quiet crashkernel=auto
kgdbwait kgdbcon kgdboe=@10.3.3.149/,@10.3.3.32
initrd /initramfs-2.6.32.4.img
[...]
Anybody has a hint on why can't I make KGDB to get working? If someone
can help me, I'd deeply grateful.
All the best,
João
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