----- Original Message ----- > > The stackframe.fp(0xffffff9c29e4f8e0) is larger than the stacktop address, so > > lead to segmentation violation gernarated by accessing regs->sp: > > (gdb) p /x 18446743644915693792//stkptr > > $5 = 0xffffff9c29e4f8e0 > > (gdb) p /x 0xffffff9c29e4f8e0-0xffffff800c428000//STACK_OFFSET_TYPE(stkptr) > > $6 = 0x1c1da278e0 > > (gdb) p /x regs > > $7 = 0x55717394b3c0 > > (gdb) p *(struct arm64_pt_regs *) 0x55717394b3c0 > > Cannot access memory at address 0x55717394b3c0 > > > > For fix this, I think it must be add a condition "arm64_in_exception_text(stackframe.pc) && INSTACK(stackframe.fp, bt)" > > to avoid an invalid exception frame before transitioning to the process stack. Or alternatively, would it be better to have arm64_is_kernel_exception_frame() verify that the "regs" assignment is legitimate, and if not, just return FALSE? Dave -- Crash-utility mailing list Crash-utility@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/crash-utility
