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From: "Michal Suchánek" <msuchanek@suse.de>
To: qemu-devel@nongnu.org
Subject: qemu-system-ppc64: ../system/memory.c:2666: memory_region_add_subregion_common: Assertion `!subregion->container' failed.
Date: Wed, 19 Mar 2025 16:47:31 +0100	[thread overview]
Message-ID: <Z9rnE7VoDfnGO8WR@kitsune.suse.cz> (raw)

Hello,

reportedly since the inclusion of Linux patch
6aa989ab2bd0d37540c812b4270006ff794662e7 powerpc/pseries/iommu: memory
notifier incorrectly adds TCEs for pmemory

qemu fails to reboot VM. When running Linux with this patch inside VM
qemu crashes due to assertion failure:

KVM: Failed to create TCE64 table for liobn 0x80000001
qemu-system-ppc64: ../system/memory.c:2666:
memory_region_add_subregion_common: Assertion `!subregion->container'
failed.
Aborted (core dumped)

This only happens for VMs with a PCI device.

qemu-system-ppc64 --enable-kvm -m 4096 -smp 8 -hda SLE15.qcow -vga none
-nographic

reboots fine but

qemu-system-ppc64 --enable-kvm -m 4096 -smp 8 -hda SLE15.qcow -vga none
-nographic -device qemu-xhci

This has been reproduced with qemu 8.2 and 9.2

It seems failry easy to reproduce but I can provide specific kernel
configuration or kernel binaries if needed.

Thanks

Michal


                 reply	other threads:[~2025-03-19 15:48 UTC|newest]

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