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On Tue, 20 Jul 2004 11:07:18 +0200 |
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pageexec@××××××××.hu wrote: |
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|
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> you're running a PaX kernel, that's not what we're debugging ;-). |
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> short of rebooting to a normal kernel you can try |
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> 'paxctl -smpr /usr/sbin/cpufreqd' and then do the gdb session |
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> again. |
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> |
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> > So it will help to recompile glibc with nostrip etc.? Thanks again, |
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> |
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> well, your previous attempt was cut short by PaX, but i still |
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> think you'll need the debug info in glibc. |
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> |
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|
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Crap, I'd booted back to a grsec/pax kernel in the meantime to mess on |
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with gradm... one thing at a time. |
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|
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Ok, I've reemerged glibc with debugging and tried again, cheers (maybe a |
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new doc is called for, Debugging for the Clueless ;) |
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|
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(gdb) run cpufreqd |
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Starting program: /usr/sbin/cpufreqd cpufreqd |
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|
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Program received signal SIGSEGV, Segmentation fault. |
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0x40016e0e in ?? () |
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(gdb) bt |
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#0 0x40016e0e in ?? () |
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#1 0x40020108 in ?? () |
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#2 0x40014580 in ?? () |
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#3 0x40014820 in ?? () |
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#4 0xbffff818 in ?? () |
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#5 0x4001f16b in ?? () |
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#6 0x40014598 in ?? () |
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#7 0x80007338 in ?? () |
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#8 0x8000389c in ?? () |
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#9 0xb03d3201 in ?? () |
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#10 0x80001cde in ?? () |
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(gdb) info registers |
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eax 0x8000389c -2147469156 |
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ecx 0x0 0 |
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edx 0x8000389c -2147469156 |
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ebx 0x400180f4 1073840372 |
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esp 0xbffff7e0 0xbffff7e0 |
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ebp 0xbffff818 0xbffff818 |
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esi 0x800072ac -2147454292 |
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edi 0x40014820 1073825824 |
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eip 0x40016e0e 0x40016e0e |
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eflags 0x10212 66066 |
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cs 0x73 115 |
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ss 0x7b 123 |
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ds 0x7b 123 |
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es 0x7b 123 |
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fs 0x0 0 |
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gs 0x0 0 |
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(gdb) x/8i $pc |
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0x40016e0e: mov %eax,(%edx) |
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0x40016e10: mov 0x54(%ebx),%edx |
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0x40016e16: mov 0xffffffe0(%ebp),%eax |
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0x40016e19: mov %eax,(%edx) |
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0x40016e1b: mov 0x64(%ebx),%edx |
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0x40016e21: lea 0xfffffb8c(%ebx),%eax |
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0x40016e27: mov %eax,0x4(%esp,1) |
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0x40016e2b: movl $0x6,(%esp,1) |
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(gdb) x/16x $sp |
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0xbffff7e0: 0x40020108 0x40014580 0x40014820 |
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0xbffff818 0xbffff7f0: 0x4001f16b 0x40014598 0x80007338 |
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0x8000389c 0xbffff800: 0xb03d3201 0x80001cde 0x00000000 |
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0x8000716c 0xbffff810: 0x800072ac 0x8000716c |
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0xbffffa78 0x80001d44 |
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|
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-- |
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