Re: [gem5-users] Tried to read unmapped address

Gabriel Michael Black Tue, 29 Nov 2011 12:09:20 -0800

It means your program segfaulted, basically. There could be manydifferent causes. You'll have to debug it to find out what's going on.


Gabe


Quoting Mahmood Naderan <[email protected]>:

I get this error for some other benchmarks for some other addresses.
Can someone clarify what does this annoying error mean?

What is the root?
--
// Naderan *Mahmood;


On Thu, Nov 24, 2011 at 5:37 PM, Mahmood Naderan <[email protected]>wrote:

The same error appears when I try to resume from a checkpoint.

986885000: system.cpu T0 : @memcpy+121.1  :   JNZ_I : limm   t2,
0xffffffffffffffe5 : IntAlu :  D=0xffffffffffffffe5
986886000: system.cpu T0 : @memcpy+121.2  :   JNZ_I : wrip   , t1, t2
: IntAlu :
986887000: system.cpu T0 : @memcpy+123.0  :   RET_NEAR : ld   t1,
SS:[rsp] : MemRead :  D=0x0000000000000000 A=0x7fffffffebf8
986888000: system.cpu T0 : @memcpy+123.1  :   RET_NEAR : addi   rsp,
rsp, 0x8 : IntAlu :  D=0x00007fffffffec00
986889000: system.cpu T0 : @memcpy+123.2  :   RET_NEAR : wripi   , t1,
0 : IntAlu :
panic: Tried to execute unmapped address 0.
 @ cycle 986890000
[invoke:build/X86_SE/arch/x86/faults.cc, line 292]



looking for any suggestion.
regards,

On 11/12/11, Mahmood Naderan <[email protected]> wrote:
> Dear all,
> With X86_SE is in fast forward mode, I get this error:
>
> panic: Tried to read unmapped address 0.
>  @ cycle 44265000
> [invoke:build/X86_SE/arch/x86/faults.cc, line 292]
>
>
> turnning on the debugger with:
> build/X86_SE/m5.debug --debug-flags=Exec ....
>
> The trace shows:
> 44250000: system.switch_cpus T0 :
> @_ZN9regmngobj13findfreeplaceEiiRiS0_+472.0  :   JNLE_I : rdip   t1,
> %ctrl153,  : IntAlu :  D=0x000000000040251e
>
> 44251000: system.switch_cpus T0 :
> @_ZN9regmngobj13findfreeplaceEiiRiS0_+472.1  :   JNLE_I : limm   t2,
> 0xfffffffffffffed2 : IntAlu :  D=0xfffffffffffffed2
>
> 44251000: system.switch_cpus T0 :
> @_ZN9regmngobj13findfreeplaceEiiRiS0_+472.2  :   JNLE_I : wrip   , t1,
> t2 : IntAlu :
>
> 44251000: system.switch_cpus T0 :
> @_ZN9regmngobj13findfreeplaceEiiRiS0_+478.0  :   MOV_R_M : ld   esi,
> DS:[rbx + 0x14c] : MemRead :  D=0x0000000000000000 A=0x6c10cc
>
> 44251000: system.switch_cpus T0 :
> @_ZN9regmngobj13findfreeplaceEiiRiS0_+484.0  :   MOV_R_M : ld   rcx,
> DS:[rbx] : MemRead :  D=0x0000000000000000 A=0x6c0f80
>
> 44251000: system.switch_cpus T0 :
> @_ZN9regmngobj13findfreeplaceEiiRiS0_+487.0  :   IMUL_R_R : mul1s
> t17d, esi, r12d : IntAlu :  D=0x0000000000000064
>
> 44251000: system.switch_cpus T0 :
> @_ZN9regmngobj13findfreeplaceEiiRiS0_+487.1  :   IMUL_R_R : mulel
> esi, t17d,  : IntAlu :  D=0x0000000000000000
>
> 44251000: system.switch_cpus T0 :
> @_ZN9regmngobj13findfreeplaceEiiRiS0_+487.2  :   IMUL_R_R : muleh
> t0d, t18d,  : IntAlu :  D=0x0000000000000000
>
> 44251000: system.switch_cpus T0 :
> @_ZN9regmngobj13findfreeplaceEiiRiS0_+491.0  :   ADD_R_R : add   esi,
> esi, r13d : IntAlu :  D=0x0000000000000064
>
> 44252000: system.switch_cpus T0 :
> @_ZN9regmngobj13findfreeplaceEiiRiS0_+494.0  :   MOVSXD_R_R : sexti
> rsi, rsi, 0x1f : IntAlu :  D=0x0000000000000000
>
> panic: Tried to read unmapped address 0.
>  @ cycle 44265000
> [invoke:build/X86_SE/arch/x86/faults.cc, line 292]
>
>
> Can someone help to see what it the fault?
>
> --
> // Naderan *Mahmood;
>


--
--
// Naderan *Mahmood;



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