On 10/18/2018 2:37 PM, Guilherme G. Piccoli wrote:
We observed a kdump failure in x86 that was narrowed down to MSI irq storm coming from a PCI network device. The bug manifests as a lack of progress in the boot process of kdump kernel, and a flood of kernel messages like: [...] [ 342.265294] do_IRQ: 0.155 No irq handler for vector [ 342.266916] do_IRQ: 0.155 No irq handler for vector [ 347.258422] do_IRQ: 14053260 callbacks suppressed [...]
These kind of issues are usually fixed by fixing the network driver's shutdown routine to ensure that MSI interrupts are cleared there.
