The stack trace you provided appears to be from a Linux kernel, specifically involving the KVM (Kernel Virtual Machine) hypervisor. The trace shows the call chain leading up to an interrupt at `kvmppc_hv_get_dirty_log`, which is part of the PowerPC KVM implementation. Here's a breakdown of the key components in the stack trace: 1. **Interrupt Handling**: - The trace ends with an interrupt (`901`) at `kvmppc_hv_get_dirty_log+0x1c4/0x570 [kvm_hv]`. This indicates that the interrupt occurred while executing this function. - The `LR` (Link Register) points to `kvmppc_hv_get_dirty_log+0x1f8/0x570`, which is the return address from the interrupt handler. 2. **KVM Functions**: - `kvm_vm_ioctl_get_dirty_log_hv`: This function likely retrieves dirty log information for KVM hypervisor guests. - `kvm_vm_ioctl_get_dirty_log`: Another KVM-related function that handles ioctl calls for getting dirty logs. - `kvm_vm_ioctl`: The main ioctl handler for KVM operations. 3. **IOCTL and System Calls**: - `do_vfs_ioctl`: Handles vfs (virtual file system) ioctl operations. - `SyS_ioctl`: The system call entry point for ioctl operations. - `system_call`: The common entry point for system calls in the kernel. 4. **Kernel Internal Functions**: - Functions like `__timer_interrupt`, `tick_sched_handle`, and others are part of the kernel's timer and scheduling mechanisms, which are involved in handling interrupts and scheduling tasks. This stack trace suggests that an interrupt occurred while the kernel was processing a KVM-related operation, specifically involving dirty log retrieval. The exact cause would require more context, but it could be related to a bug or incorrect usage in the KVM hypervisor implementation. If you're encountering this issue, consider checking for updates or patches related to the PowerPC KVM implementation, as it may be a known issue or regression.