Hi, I am still not able to use gdb. # gdb vmlinux /proc/kcore /proc/kcore: Operation not permitted. (gdb) I have read in some other forum that access to /proc/kcore is disabled in redhat distributions. Is it true? I am on 2.6.5 kernel. Thanks, Vasu. On 5/6/05, Sandeep <sandeep@xxxxxxxxxxxxxxx> wrote: > > Hi > > > > > hello there, > i was also trying to run gdb but when i tried the command that you told it > gives the following error: > > gdb /linux-*/vmlinux /proc/kcore > > Hey don't use the exact comman... linux-*, use the actual kernel version for > it... as linux-2.6.10.. or something similar according to ur kernel version. > Try with this... > > > > > > sandeep > > > > GNU gdb Red Hat Linux (5.3post-0.20021129.18rh) > Copyright 2003 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 > "i386-redhat-linux-gnu".../linux-*/vmlinux: No such file or > directory. > > Core was generated by `ro root=LABEL=/'. > #0 <function called from gdb> > (gdb) q > > what could be the possible problem? > thanks in advance > > Regards > vaishali > > On Thu, 05 May 2005 lk wrote : > >the image vmlinuz is in compressed form .. > >it can't be directly used for debugging with gdb... > >instead go for vmlinux .. > >it'll be in ur usr/src/linux-*/ > >as we have enabled debugging in the config... > >we'll get a huge vmlinux... > > > >start gdb as >> > >gdb /linux-*/vmlinux /proc/kcore > > > >regards > >lk > > > >----- Original Message ----- > > From: "Vasu S" <vasu.ss@xxxxxxxxx> > >To: <kernelnewbies@xxxxxxxxxxxx> > >Sent: Thursday, May 05, 2005 7:23 AM > >Subject: gdb for kernel debugging > > > > > > > Hi all, > > > > > > I am trying to use gdb for debugging kernel. My intention is just to > > > go thru different kernel data structures. > > > I am getting the following error. > > > > > > #gdb /boot/vmlinuz-2.6.5-1-debug.358 /proc/kcore > > > GNU gdb Red Hat Linux (6.0post-0.20040223.19rh) > > > Copyright 2004 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 > > > > "i386-redhat-linux-gnu"..."/boot/vmlinuz-2.6.5-1-debug.358": > not in > > > executable format: File format not recognized > > > /proc/kcore: Operation not permitted. > > > (gdb) q > > > > > > ---------- > > > I have compiled the kernel with CONFIG_DEBUG_INFO set to y. Even > > > googling the error didnt help. > > > Please tell me what could be the problem. Am I missing something? > > > > > > Thanks for paying attention. > > > Vasu > > > > > > -- > > > Kernelnewbies: Help each other learn about the Linux kernel. > > > Archive: http://mail.nl.linux.org/kernelnewbies/ > > > FAQ: http://kernelnewbies.org/faq/ > > > > > > > > > > > > > >-- > >Kernelnewbies: Help each other learn about the Linux kernel. > >Archive: http://mail.nl.linux.org/kernelnewbies/ > >FAQ: http://kernelnewbies.org/faq/ > > > > > -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
