[Crash-utility] Is there any support for userspace stack dump for crash utility?

Hi, I'd like to find help here that does anyone have tried to get the crash utility support the userspace stack dumping, or it already be supported? Certainly userspace crash would not cause kernel panic, but for more robust product, we force kernel panic and trigger the kdump at every userspace crash. So the support for dumping user stack is import to us. Anyone has some idea to this feature? If we could get the stack like stack dump from userspace to kernel space with parameter showing, then that is perfect. Example: -010|do_vfs_ioctl(filp = 0xCE575500, ?, ?, arg = 1181448720) -011|sys_ioctl(fd = 27, cmd = 30000, arg = 1181448720) -012|ret_fast_syscall(asm) -->|exception -013|__ioctl(asm) -014|ioctl(?, request = 0) Thanks, Lei