New: kdump kernel hangs in powerkvm guest
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: [email protected]
Reporter: [email protected]
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] processingSEQNUM=1193 killed
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[Bug 217350] kdump kernel hangs in powerkvm guest
https://bugzilla.kernel.org/show_bug.cgi?id=217350
Coiby ([email protected]) changed:
What |Removed |Added
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CC| |[email protected], | |[email protected]
--- Comment #1 from Coiby ([email protected]) --- 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
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[Bug 217350] kdump kernel hangs in powerkvm guest
In reply to [email protected]https://bugzilla.kernel.org/show_bug.cgi?id=217350
--- Comment #2 from Cédric Le Goater ([email protected]) --- 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.
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