The patches mentioned above were applied upstream either for v6.10-rc1
or for v6.11-rc1, therefore they are included in the kernel currently in
oracular-proposed (6.11.0-5.5).
** Changed in: linux (Ubuntu Oracular)
Status: Triaged => Fix Committed
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https://bugs.launchpad.net/bugs/2076866
Title:
Guest crahses post migration with migrate_misplaced_folio+0x4cc/0x5d0
Status in The Ubuntu-power-systems project:
Triaged
Status in linux package in Ubuntu:
Fix Committed
Status in linux source package in Noble:
Triaged
Status in linux source package in Oracular:
Fix Committed
Bug description:
== Comment: #0 - SEETEENA THOUFEEK <sthou...@in.ibm.com> - 2024-08-12
23:50:17 ==
+++ This bug was initially created as a clone of Bug #207985 +++
---Problem Description---
Post Migration Non-MDC L1 eralp1 crashed with
migrate_misplaced_folio+0x4cc/0x5d0 (
Machine Type = na
Contact Information = sthou...@in.ibm.com
---Steps to Reproduce---
Problem description :
After 1 hour of successful migration from doodlp1 [MDC MODE] to eralp1[NON
MDC mode],eralp1 guest
and dump is collected
---uname output---
na
---Debugger---
A debugger is not configured
[281827.975244] NIP [c0000000005f0620] migrate_misplaced_folio+0x4f0/0x5d0
[281827.975251] LR [c0000000005f067c] migrate_misplaced_folio+0x54c/0x5d0
[281827.975258] Call Trace:
[281827.975260] [c000001e19ff7140] [c0000000005f0670]
migrate_misplaced_folio+0x540/0x5d0 (unreliable)
[281827.975268] [c000001e19ff71d0] [c00000000054c9f0]
__handle_mm_fault+0xf70/0x28e0
[281827.975276] [c000001e19ff7310] [c00000000054e478]
handle_mm_fault+0x118/0x400
[281827.975284] [c000001e19ff7360] [c00000000053598c]
__get_user_pages+0x1ec/0x5b0
[281827.975291] [c000001e19ff7420] [c000000000536920]
get_user_pages_unlocked+0x120/0x4f0
[281827.975298] [c000001e19ff74c0] [c00800001894ea9c] hva_to_pfn+0xf4/0x630
[kvm]
[281827.975316] [c000001e19ff7550] [c008000018b4efc4]
kvmppc_book3s_instantiate_page+0xec/0x790 [kvm_hv]
[281827.975326] [c000001e19ff7660] [c008000018b4f750]
kvmppc_book3s_radix_page_fault+0xe8/0x380 [kvm_hv]
[281827.975335] [c000001e19ff7700] [c008000018b488fc]
kvmppc_book3s_hv_page_fault+0x294/0xd60 [kvm_hv]
[281827.975344] [c000001e19ff77e0] [c008000018b43f5c]
kvmppc_vcpu_run_hv+0xf94/0x11d0 [kvm_hv]
[281827.975352] [c000001e19ff78a0] [c00800001896131c]
kvmppc_vcpu_run+0x34/0x48 [kvm]
[281827.975365] [c000001e19ff78c0] [c00800001895c164]
kvm_arch_vcpu_ioctl_run+0x39c/0x570 [kvm]
[281827.975379] [c000001e19ff7950] [c00800001894a104]
kvm_vcpu_ioctl+0x20c/0x9a8 [kvm]
[281827.975391] [c000001e19ff7b30] [c000000000683974] sys_ioctl+0x574/0x16a0
[281827.975395] [c000001e19ff7c30] [c000000000030838]
system_call_exception+0x168/0x310
[281827.975400] [c000001e19ff7e50] [c00000000000d05c]
system_call_vectored_common+0x15c/0x2ec
[281827.975406] --- interrupt: 3000 at 0x7fffb7d4d2bc
Mirroring to distro as per message in group channel
Please pick these patches for this bug:
ee86814b0562 ("mm/migrate: move NUMA hinting fault folio isolation + checks
under PTL")
4b88c23ab8c9 ("mm/migrate: make migrate_misplaced_folio() return 0 on
success")
d2136d749d76 ("mm: support multi-size THP numa balancing")
6b0ed7b3c775 ("mm: factor out the numa mapping rebuilding into a new helper")
ebb34f78d72c ("mm: convert folio_estimated_sharers() to
folio_likely_mapped_shared()")
133d04b1eee9 ("mm/numa_balancing: allow migrate on protnone reference with
MPOL_PREFERRED_MANY policy")
f8fd525ba3a2 ("mm/mempolicy: use numa_node_id() instead of cpu_to_node()")
Thanks,
Amit
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