Re: [gem5-users] Page table fault when accessing virtual address 0x98
Thanks for the reply. But I don't know how to get to the trace around the warning lines. (only the terminated tick printed) How to find the tick at which warning appears? jiakunli2010，jiakunli2...@gmail.com 2014/5/8 ___ gem5-users mailing list gem5-users@gem5.org http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
Re: [gem5-users] Page table fault when accessing virtual address 0x98
--debug-flags=Exec --debug-start=some number of ticks before crashes Ali On 08.05.2014 02:13, jiakunli2010 via gem5-users wrote: Thanks for the reply. But I don't know how to get to the trace around the warning lines. (only the terminated tick printed) How to find the tick at which warning appears? jiakunli2010，jiakunli2...@gmail.com 2014/5/8 ___ gem5-users mailing list gem5-users@gem5.org http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users [1] Links: -- [1] http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users ___ gem5-users mailing list gem5-users@gem5.org http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
[gem5-users] Page table fault when accessing virtual address 0x98
Hello All! I am running SPEC2006 (4 workloads on 4-core) using gem5 classic memory, timing cpu model. The error message are pasted below. However, when I applied one workload to the same 4-core system, I got no errors for any of the four workloads. The system could also run some other mixes of SPEC2006 workloads and the Hello world! example. I searched the debug file but did not find any clues. I made considerable modification to the source code of cache system, I suppose it was bugs there. Does anyone have any idea about where the errors may come from or any suggestion on the debugging method? info: Increaseing stack size by one page. info: Increaseing stack size by one page. Warning line 7126: Column C918 for row R10193 ignored Warning line 7189: Column C932 for row 1. ignored Warning line 7834: Column C1084 for row 8 ignored info: Increaseing stack size by one page. Warning line 8824: Column C1306 for row 1. ignored Warning line 8827: Column C1306 for row 0 ignored Syntax error in line 8829 panic: Page table fault when accessing virtual address 0x98 @ cycle 32812561593 [invoke: build/ARM/sim/faults.cc, line 70] Memory Usage: 2884000 KBytes jiakunli2010，jiakunli2...@gmail.com 2014/5/7 ___ gem5-users mailing list gem5-users@gem5.org http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
Re: [gem5-users] Page table fault when accessing virtual address 0x98
The page fault you're seeing below is what you would see on a normal system as a segmentation fault. You're likely referencing a null pointer plus some offset. You need to look at a trace of the instructions and memory system, see how that address is generated and assuming it's the problem I mentioned, why a previous write disappeared or got lost in your cache modifications. Thanks, Ali On 07.05.2014 09:27, jiakunli2010 via gem5-users wrote: Hello All! I am running SPEC2006 (4 workloads on 4-core) using gem5 classic memory, timing cpu model. The error message are pasted below. However, when I applied one workload to the same 4-core system, I got no errors for any of the four workloads. The system could also run some other mixes of SPEC2006 workloads and the Hello world! example. I searched the debug file but did not find any clues. I made considerable modification to the source code of cache system, I suppose it was bugs there. Does anyone have any idea about where the errors may come from or any suggestion on the debugging method? info: Increaseing stack size by one page. info: Increaseing stack size by one page. Warning line 7126: Column C918 for row R10193 ignored Warning line 7189: Column C932 for row 1. ignored Warning line 7834: Column C1084 for row 8 ignored info: Increaseing stack size by one page. Warning line 8824: Column C1306 for row 1. ignored Warning line 8827: Column C1306 for row 0 ignored Syntax error in line 8829 panic: Page table fault when accessing virtual address 0x98 @ cycle 32812561593 [invoke: build/ARM/sim/faults.cc, line 70] Memory Usage: 2884000 KBytes jiakunli2010，jiakunli2...@gmail.com 2014/5/7 ___ gem5-users mailing list gem5-users@gem5.org http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users [1] Links: -- [1] http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users ___ gem5-users mailing list gem5-users@gem5.org http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
