Miles Lane <miles.lane at gmail.com> wrote: > > Hello, > > I think I decoded this Oops correctly. The crash occurs before the > disk is mounted, so I am unable to access the contents of /proc/ksyms > and /proc/modules. However, the decoding using the modules and > System.map looks reasonable. Is the decoding accurate? Thanks for doing this. CONFIG_KALLSYMS does all the decoding for us, so we normally don't need ksymoops. However the EIP wasn't decoded, and that's the most important datum. Could you do: gdb vmlinux (gdb) x/30i 0xc028bba0 so we can work out what's at 0xc028bbc2? > ksymoops -o /lib/modules/2.6.12-rc1-mm1/ -m > /boot/System.map-2.6.12-rc1-mm1 < oops > ksymoops 2.4.9 on i686 2.6.11-bk5. Options used > -V (default) > -k /proc/ksyms (default) > -l /proc/modules (default) > -o /lib/modules/2.6.12-rc1-mm1/ (specified) > -m /boot/System.map-2.6.12-rc1-mm1 (specified) > > Error (regular_file): read_ksyms stat /proc/ksyms failed > ksymoops: No such file or directory > No modules in ksyms, skipping objects > No ksyms, skipping lsmod > Unable to handle kernel NULL pointer dereference at virtual address 00000000 > C028bbc2 > *pde = 00000000 > Oops: 0000 [#1] > CPU: 0 > EIP: 0060:[<c028bbc2>] Not tainted VLI > Using defaults from ksymoops -t elf32-i386 -a i386 > EFLAGS: 00010282 (2.6.11-mm3) > Eax: 00000000 ebx: 00000000 ecx: 00000000 edx: f7e99504 > Esi: c03f5260 edi: 00000000 ebp: f7c21fa4 esp: f7c21f90 > Ds: 007b es: 007b ss: 0068 > Stack: f7c00540 c03f5264 00000000 00000000 00000000 f7c21fbc c0480695 c03f5260 > c03724f8 c03f5140 c048d204 f7c21fd8 c04668ab c01002d0 00000000 00000000 > c01002d0 00000000 f7c21fec c0100302 0000007b 0000007b ffffffff 00000000 > Call Trace: > [<c010404f>] show_stack+0x7f/0xa0 > [<c01041ea>] show_registers+0x15a/0x1c0 > [<c01043e0>] die+0xf0/0x190 > [<c011450b>] do_page_fault+0x31b/0x670 > [<c0103c83>] error_code+0x2b/0x30 > [<c0480695>] i2c_dev_init+0x55/0xa0 > [<c04668ab>] do_initcalls+0x2b/0xc0 > [<c0100302>] init+0x32/0x130 > [<c0101351>] kernel_thread_helper+0x5/0x14 > Code: e5 e8 ff f6 46 2c 01 74 30 8b 1d a0 4e 3f c0 8b 03 0f 18 00 90 > > > >>EIP; c028bbc2 <pnp_assign_mem+82/140> <===== > > >>edx; f7e99504 <pg0+37936504/3fa9b400> > >>Esi; c03f5260 <__func__.2+1edc5/3adbd> > >>ebp; f7c21fa4 <pg0+376befa4/3fa9b400> > >>esp; f7c21f90 <pg0+376bef90/3fa9b400> > > Trace; c010404f <irq_entries_start+183/880> > Trace; c01041ea <irq_entries_start+31e/880> > Trace; c01043e0 <irq_entries_start+514/880> > Trace; c011450b <_setbad+401/6f6> > Trace; c0103c83 <ret_from_fork+3/14> > Trace; c0480695 <texts.16+5/8> > Trace; c04668ab <__devices_8086+acb/eb0> > Trace; c0100302 <init+32/130> > Trace; c0101351 <kernel_thread_helper+5/14> > > Code; c028bbc2 <pnp_assign_mem+82/140> > 00000000 <_EIP>: > Code; c028bbc2 <pnp_assign_mem+82/140> <===== > 0: e5 e8 in $0xe8,%eax <===== > Code; c028bbc4 <pnp_assign_mem+84/140> > 2: ff f6 push %esi > Code; c028bbc6 <pnp_assign_mem+86/140> > 4: 46 inc %esi > Code; c028bbc7 <pnp_assign_mem+87/140> > 5: 2c 01 sub $0x1,%al > Code; c028bbc9 <pnp_assign_mem+89/140> > 7: 74 30 je 39 <_EIP+0x39> > Code; c028bbcb <pnp_assign_mem+8b/140> > 9: 8b 1d a0 4e 3f c0 mov 0xc03f4ea0,%ebx > Code; c028bbd1 <pnp_assign_mem+91/140> > f: 8b 03 mov (%ebx),%eax > Code; c028bbd3 <pnp_assign_mem+93/140> > 11: 0f 18 00 prefetchnta (%eax) > Code; c028bbd6 <pnp_assign_mem+96/140> > 14: 90 nop > > <0>Kernel panic ??" not syncing: Attempted to kill init! > > 1 error issued. Results may not be reliable.
