[Crash-utility] crash failed to get backtrace in module on powerpc target(e500v2)

Hi Experts: I met a issue when try to analysis vmcore which was triggered by a error in module on powerpc target. BG: Crash version is 6.1.4, I cross build it with powerpc toolchain, and run it on p2020(e500v2) target directly. It show the following error: /*************************************************************************/ crash> bt PID: 588 TASK: eed6e880 CPU: 1 COMMAND: "insmod" R0: c0097cfc R1: eed81e80 R2: eed6e880 R3: eed81db8 R4: 00021000 R5: c07955df R6: 000025d1 R7: c0793bb0 R8: 00001a2f R9: 00000000 R10: 00000020 R11: eed80000 R12: 24000044 R13: 100a73a0 R14: 00000000 R15: 00000000 R16: 00000000 R17: 00000000 R18: 00000000 R19: 00000000 R20: 00000000 R21: 00000000 R22: 00000000 R23: 00000000 R24: 00000000 R25: 00000000 R26: 00028b70 R27: f23ea000 R28: 00000000 R29: eed81db8 R30: c0753178 R31: c0790000 NIP: c05c7e9c MSR: 00021000 OR3: eed81e48 CTR: 00000001 LR: c05c7e9c XER: 20000000 CCR: 24000042 MQ: c0007fdc DAR: 00000000 DSISR: 00000000 Syscall Result: 00000000 NIP [00000000c05c7e9c] panic LR [00000000c05c7e9c] panic #0 [eed81e80] panic at c05c7e9c bt: ppc_back_trace hit unknown symbol (f23e70b4). /*************************************************************************/ I doubt if the crash can not worked well on e500v2 target for the moment? BTW, In my module, module_init will call a function, that function will call panic and cause kdump, but from the log when issue happen, looks it did not show the right call trace: /*************************************************************************/ [eed81e80] [c05c7e94] panic+0x12c/0x1ac [eed81ed0] [f23e70b4] dummy_cleanup_module+0x0/0x44 [dummy] [eed81ee0] [f23ea030] dummy_init_module+0x30/0x68 [dummy] [eed81ef0] [c0002124] do_one_initcall+0x3c/0x1e0 [eed81f20] [c008e698] sys_init_module+0xf8/0x21c /*************************************************************************/ Do you have some comments on this kind of secne? Thanks a lot for your valuable time! Best Regards, James Liu Jianbo | WIND RIVER | Senior Engineer - Technical Support Tel 86 28 65318098 | Cell 86 13558641588 | Fax 86 28 65319983 Manage your support account: https://support.windriver.com Ask a Technical Question https://ask.windriver.com Submit a Service Request https://windriver.force.com/support