https://bugzilla.kernel.org/show_bug.cgi?id=217350
Bug ID: 217350
Summary: kdump kernel hangs in powerkvm guest
Product: Platform Specific/Hardware
Version: 2.5
Hardware: PPC-64
OS: Linux
Status: NEW
Severity: normal
Priority: P3
Component: PPC-64
Assignee: platform_ppc...@kernel-bugs.osdl.org
Reporter: pi...@redhat.com
Regression: No
Created attachment 304157
--> https://bugzilla.kernel.org/attachment.cgi?id=304157&action=edit
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
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