Created attachment 304157 [details] The xml to configure the virtual machine This bug has been observed at least since kernel version 5.19. The kdump kernel command line: [ 0.000000] Kernel command line: elfcorehdr=0x22c00000 no_timer_check net.ifnames=0 console=tty0 console=hvc0,115200n8 irqpoll maxcpus=1 noirqdistrib reset_devices cgroup_disable=memory numa=off udev.children-max=2 ehea.use_mcs=0 panic=10 kvm_cma_resv_ratio=0 transparent_hugepage=never novmcoredd hugetlb_cma=0 Finally, the system hangs: [ 7.763260] virtio_blk virtio2: 32/0/0 default/read/poll queues [ 7.771391] virtio_blk virtio2: [vda] 20971520 512-byte logical blocks (10.7 GB/10.0 GiB) [ 68.398234] systemd-udevd[187]: virtio2: Worker [190] processing SEQNUM=1193 is taking a long time [ 188.398258] systemd-udevd[187]: virtio2: Worker [190] processing SEQNUM=1193 killed
Hi Cédric, My bisection [1] shows this is a regression caused by your patch it's a regression caused by "[PATCH 00/31] powerpc: Modernize the PCI/MSI support". Do you have any suggestion to fix this bug? Thanks! [1] https://bugzilla.redhat.com/show_bug.cgi?id=2123723
Hello Pingfan, This was a large series. Did you identify the exact patch ? It should be related to the powerpc/pseries/pci or powerpc/xive subsystem.